TY  - JOUR
AU  - Ma, Bo
AU  - Yao, Jun
AU  - Šolević Knudsen, Tatjana
AU  - Chen, Zhihui
AU  - Pang, Wancheng
AU  - Liu, Bang
AU  - Cao, Ying
AU  - Zhu, Xiaozhe
AU  - Zhao, Chenchen
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5369
AB  - In this study, efficient simultaneous elimination of typical mine pollutants benzotriazole (BTA) and Cr(VI) was achieved by using a copper slag (CS) activated peroxodisulfate (PDS) Fenton system, with WS2 as a co-catalyst. The combined use of these two mine-sourced materials enables excellent pollution removal efficiency. CS can continuously release ferrous ions for the advanced oxidation processes (AOPs), while WS2 as a co-catalyst has key roles in acceleration of the rate-limiting step of Fe3+/Fe2+ conversion and prevention of Fe3+ precipitation. In this process, Fe3+/Fe2+ conversion primarily occurs on the surface of WS2, whereas PDS decomposition and BTA degradation are dominated by homogeneous Fenton reactions. Dissolved Fe2+ has a main role in the activation of PDS and generation of ROS. The contributions of free radicals, singlet oxygen and Fe(IV) in BTA degradation were carefully evaluated. Fe(IV) was identified as the major ROS responsible for degradation of BTA in the CS/WS2/PDS system. This was further confirmed by the Raman spectra and the detection of BTA degradation products formed by the transfer of oxygen atoms. Kinetics calculation showed that Fe(IV) was responsible for 63.4 % of the degradation of BTA. More importantly, water matrix had a low impact on the degradation of BTA due to the high selectivity of Fe(IV). This study provides a new strategy for a cost-effective and efficient decontamination of the environment in mining areas.
PB  - Elsevier
T2  - Chemical Engineering Journal
T1  - Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI)
VL  - 451
IS  - 3
SP  - 138888
DO  - 10.1016/j.cej.2022.138888
ER  - 

@article{
author = "Ma, Bo and Yao, Jun and Šolević Knudsen, Tatjana and Chen, Zhihui and Pang, Wancheng and Liu, Bang and Cao, Ying and Zhu, Xiaozhe and Zhao, Chenchen",
year = "2023",
abstract = "In this study, efficient simultaneous elimination of typical mine pollutants benzotriazole (BTA) and Cr(VI) was achieved by using a copper slag (CS) activated peroxodisulfate (PDS) Fenton system, with WS2 as a co-catalyst. The combined use of these two mine-sourced materials enables excellent pollution removal efficiency. CS can continuously release ferrous ions for the advanced oxidation processes (AOPs), while WS2 as a co-catalyst has key roles in acceleration of the rate-limiting step of Fe3+/Fe2+ conversion and prevention of Fe3+ precipitation. In this process, Fe3+/Fe2+ conversion primarily occurs on the surface of WS2, whereas PDS decomposition and BTA degradation are dominated by homogeneous Fenton reactions. Dissolved Fe2+ has a main role in the activation of PDS and generation of ROS. The contributions of free radicals, singlet oxygen and Fe(IV) in BTA degradation were carefully evaluated. Fe(IV) was identified as the major ROS responsible for degradation of BTA in the CS/WS2/PDS system. This was further confirmed by the Raman spectra and the detection of BTA degradation products formed by the transfer of oxygen atoms. Kinetics calculation showed that Fe(IV) was responsible for 63.4 % of the degradation of BTA. More importantly, water matrix had a low impact on the degradation of BTA due to the high selectivity of Fe(IV). This study provides a new strategy for a cost-effective and efficient decontamination of the environment in mining areas.",
publisher = "Elsevier",
journal = "Chemical Engineering Journal",
title = "Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI)",
volume = "451",
number = "3",
pages = "138888",
doi = "10.1016/j.cej.2022.138888"
}

Ma, B., Yao, J., Šolević Knudsen, T., Chen, Z., Pang, W., Liu, B., Cao, Y., Zhu, X.,& Zhao, C.. (2023). Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI). in Chemical Engineering Journal
Elsevier., 451(3), 138888.
https://doi.org/10.1016/j.cej.2022.138888

Ma B, Yao J, Šolević Knudsen T, Chen Z, Pang W, Liu B, Cao Y, Zhu X, Zhao C. Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI). in Chemical Engineering Journal. 2023;451(3):138888.
doi:10.1016/j.cej.2022.138888 .

Ma, Bo, Yao, Jun, Šolević Knudsen, Tatjana, Chen, Zhihui, Pang, Wancheng, Liu, Bang, Cao, Ying, Zhu, Xiaozhe, Zhao, Chenchen, "Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI)" in Chemical Engineering Journal, 451, no. 3 (2023):138888,
https://doi.org/10.1016/j.cej.2022.138888 . .

TY  - JOUR
AU  - Zhu, Xiaozhe
AU  - Yao, Jun
AU  - Šolević Knudsen, Tatjana
AU  - Liu, Jianli
AU  - Zhao, Chenchen
AU  - Ma, Bo
AU  - Chen, Zhihui
AU  - Li, Hao
AU  - Liu, Bang
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5403
AB  - The organic pollution generated during production and processing in the mining area seriously endangers the ecological security of the surrounding environment. In this study, degradation of α-nitroso-β-naphthol (αNβN), a typical organic flotation reagent in mining area, by using steel converter slag (SCS) as a low-cost catalyst was reported for the first time. The results showed that SCS + H2O2 could effectively remove αNβN from water solutions. In the system used in this study, more than 98.8 % of αNβN could be removed within 60 min. Based on the analysis of the experimental results, the synergistic mechanism of radical and non-radical pathways was proposed. The radical pathway mainly consisted of [rad]OH radical oxidation, while the non-free radical pathway consisted of 1O2 and electron transfer. Fe, bridging OH and terminal OH on the surface of SCS were the active sites for H2O2 activation. The removal performance of the system was not affected by common coexisting ions, and showed strong anti-interference ability. After 4 times repeated use, the removal efficiency still reached more than 83 %. HPLC-MS was used to analyze the intermediate products, while the changes in their toxicity effects were analyzed by microcalorimetry for the first time. The results showed that the system could effectively reduce the ecotoxicity of a water solution containing αNβN. This study provides not only a new strategy for treating organic pollution in mining areas, but also a new idea for the green cycle development of industry and mining from the perspective of “treat the wastes with wastes”.
PB  - Elsevier
T2  - Chemical Engineering Journal
T1  - Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways
VL  - 454
SP  - 140097
DO  - 10.1016/j.cej.2022.140097
ER  - 

@article{
author = "Zhu, Xiaozhe and Yao, Jun and Šolević Knudsen, Tatjana and Liu, Jianli and Zhao, Chenchen and Ma, Bo and Chen, Zhihui and Li, Hao and Liu, Bang",
year = "2023",
abstract = "The organic pollution generated during production and processing in the mining area seriously endangers the ecological security of the surrounding environment. In this study, degradation of α-nitroso-β-naphthol (αNβN), a typical organic flotation reagent in mining area, by using steel converter slag (SCS) as a low-cost catalyst was reported for the first time. The results showed that SCS + H2O2 could effectively remove αNβN from water solutions. In the system used in this study, more than 98.8 % of αNβN could be removed within 60 min. Based on the analysis of the experimental results, the synergistic mechanism of radical and non-radical pathways was proposed. The radical pathway mainly consisted of [rad]OH radical oxidation, while the non-free radical pathway consisted of 1O2 and electron transfer. Fe, bridging OH and terminal OH on the surface of SCS were the active sites for H2O2 activation. The removal performance of the system was not affected by common coexisting ions, and showed strong anti-interference ability. After 4 times repeated use, the removal efficiency still reached more than 83 %. HPLC-MS was used to analyze the intermediate products, while the changes in their toxicity effects were analyzed by microcalorimetry for the first time. The results showed that the system could effectively reduce the ecotoxicity of a water solution containing αNβN. This study provides not only a new strategy for treating organic pollution in mining areas, but also a new idea for the green cycle development of industry and mining from the perspective of “treat the wastes with wastes”.",
publisher = "Elsevier",
journal = "Chemical Engineering Journal",
title = "Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways",
volume = "454",
pages = "140097",
doi = "10.1016/j.cej.2022.140097"
}

Zhu, X., Yao, J., Šolević Knudsen, T., Liu, J., Zhao, C., Ma, B., Chen, Z., Li, H.,& Liu, B.. (2023). Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways. in Chemical Engineering Journal
Elsevier., 454, 140097.
https://doi.org/10.1016/j.cej.2022.140097

Zhu X, Yao J, Šolević Knudsen T, Liu J, Zhao C, Ma B, Chen Z, Li H, Liu B. Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways. in Chemical Engineering Journal. 2023;454:140097.
doi:10.1016/j.cej.2022.140097 .

Zhu, Xiaozhe, Yao, Jun, Šolević Knudsen, Tatjana, Liu, Jianli, Zhao, Chenchen, Ma, Bo, Chen, Zhihui, Li, Hao, Liu, Bang, "Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways" in Chemical Engineering Journal, 454 (2023):140097,
https://doi.org/10.1016/j.cej.2022.140097 . .

TY  - JOUR
AU  - Zhu, Xiaozhe
AU  - Yao, Jun
AU  - Šolević Knudsen, Tatjana
AU  - Liu, Jianli
AU  - Zhao, Chenchen
AU  - Ma, Bo
AU  - Chen, Zhihui
AU  - Li, Hao
AU  - Liu, Bang
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5509
AB  - The organic pollution generated during production and processing in the mining area seriously endangers the ecological security of the surrounding environment. In this study, degradation of α-nitroso-β-naphthol (αNβN), a typical organic flotation reagent in mining area, by using steel converter slag (SCS) as a low-cost catalyst was reported for the first time. The results showed that SCS + H2O2 could effectively remove αNβN from water solutions. In the system used in this study, more than 98.8 % of αNβN could be removed within 60 min. Based on the analysis of the experimental results, the synergistic mechanism of radical and non-radical pathways was proposed. The radical pathway mainly consisted of [rad]OH radical oxidation, while the non-free radical pathway consisted of 1O2 and electron transfer. Fe, bridging OH and terminal OH on the surface of SCS were the active sites for H2O2 activation. The removal performance of the system was not affected by common coexisting ions, and showed strong anti-interference ability. After 4 times repeated use, the removal efficiency still reached more than 83 %. HPLC-MS was used to analyze the intermediate products, while the changes in their toxicity effects were analyzed by microcalorimetry for the first time. The results showed that the system could effectively reduce the ecotoxicity of a water solution containing αNβN. This study provides not only a new strategy for treating organic pollution in mining areas, but also a new idea for the green cycle development of industry and mining from the perspective of “treat the wastes with wastes”.
PB  - Elsevier
T2  - Chemical Engineering Journal
T1  - Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways
VL  - 454
SP  - 140097
DO  - 10.1016/j.cej.2022.140097
ER  - 

@article{
author = "Zhu, Xiaozhe and Yao, Jun and Šolević Knudsen, Tatjana and Liu, Jianli and Zhao, Chenchen and Ma, Bo and Chen, Zhihui and Li, Hao and Liu, Bang",
year = "2023",
abstract = "The organic pollution generated during production and processing in the mining area seriously endangers the ecological security of the surrounding environment. In this study, degradation of α-nitroso-β-naphthol (αNβN), a typical organic flotation reagent in mining area, by using steel converter slag (SCS) as a low-cost catalyst was reported for the first time. The results showed that SCS + H2O2 could effectively remove αNβN from water solutions. In the system used in this study, more than 98.8 % of αNβN could be removed within 60 min. Based on the analysis of the experimental results, the synergistic mechanism of radical and non-radical pathways was proposed. The radical pathway mainly consisted of [rad]OH radical oxidation, while the non-free radical pathway consisted of 1O2 and electron transfer. Fe, bridging OH and terminal OH on the surface of SCS were the active sites for H2O2 activation. The removal performance of the system was not affected by common coexisting ions, and showed strong anti-interference ability. After 4 times repeated use, the removal efficiency still reached more than 83 %. HPLC-MS was used to analyze the intermediate products, while the changes in their toxicity effects were analyzed by microcalorimetry for the first time. The results showed that the system could effectively reduce the ecotoxicity of a water solution containing αNβN. This study provides not only a new strategy for treating organic pollution in mining areas, but also a new idea for the green cycle development of industry and mining from the perspective of “treat the wastes with wastes”.",
publisher = "Elsevier",
journal = "Chemical Engineering Journal",
title = "Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways",
volume = "454",
pages = "140097",
doi = "10.1016/j.cej.2022.140097"
}

Zhu, X., Yao, J., Šolević Knudsen, T., Liu, J., Zhao, C., Ma, B., Chen, Z., Li, H.,& Liu, B.. (2023). Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways. in Chemical Engineering Journal
Elsevier., 454, 140097.
https://doi.org/10.1016/j.cej.2022.140097

Zhu X, Yao J, Šolević Knudsen T, Liu J, Zhao C, Ma B, Chen Z, Li H, Liu B. Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways. in Chemical Engineering Journal. 2023;454:140097.
doi:10.1016/j.cej.2022.140097 .

Zhu, Xiaozhe, Yao, Jun, Šolević Knudsen, Tatjana, Liu, Jianli, Zhao, Chenchen, Ma, Bo, Chen, Zhihui, Li, Hao, Liu, Bang, "Resource utilization of steel converter slag: Efficient degradation of typical organic flotation reagent α-nitroso-β-naphthol via the synergy of radical and non-radical pathways" in Chemical Engineering Journal, 454 (2023):140097,
https://doi.org/10.1016/j.cej.2022.140097 . .

TY  - JOUR
AU  - Ma, Bo
AU  - Yao, Jun
AU  - Šolević Knudsen, Tatjana
AU  - Chen, Zhihui
AU  - Pang, Wancheng
AU  - Liu, Bang
AU  - Cao, Ying
AU  - Zhu, Xiaozhe
AU  - Zhao, Chenchen
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5547
AB  - In this study, efficient simultaneous elimination of typical mine pollutants benzotriazole (BTA) and Cr(VI) was achieved by using a copper slag (CS) activated peroxodisulfate (PDS) Fenton system, with WS2 as a co-catalyst. The combined use of these two mine-sourced materials enables excellent pollution removal efficiency. CS can continuously release ferrous ions for the advanced oxidation processes (AOPs), while WS2 as a co-catalyst has key roles in acceleration of the rate-limiting step of Fe3+/Fe2+ conversion and prevention of Fe3+ precipitation. In this process, Fe3+/Fe2+ conversion primarily occurs on the surface of WS2, whereas PDS decomposition and BTA degradation are dominated by homogeneous Fenton reactions. Dissolved Fe2+ has a main role in the activation of PDS and generation of ROS. The contributions of free radicals, singlet oxygen and Fe(IV) in BTA degradation were carefully evaluated. Fe(IV) was identified as the major ROS responsible for degradation of BTA in the CS/WS2/PDS system. This was further confirmed by the Raman spectra and the detection of BTA degradation products formed by the transfer of oxygen atoms. Kinetics calculation showed that Fe(IV) was responsible for 63.4 % of the degradation of BTA. More importantly, water matrix had a low impact on the degradation of BTA due to the high selectivity of Fe(IV). This study provides a new strategy for a cost-effective and efficient decontamination of the environment in mining areas.
PB  - Elsevier
T2  - Chemical Engineering Journal
T1  - Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI)
VL  - 451
IS  - 3
SP  - 138888
DO  - 10.1016/j.cej.2022.138888
ER  - 

@article{
author = "Ma, Bo and Yao, Jun and Šolević Knudsen, Tatjana and Chen, Zhihui and Pang, Wancheng and Liu, Bang and Cao, Ying and Zhu, Xiaozhe and Zhao, Chenchen",
year = "2023",
abstract = "In this study, efficient simultaneous elimination of typical mine pollutants benzotriazole (BTA) and Cr(VI) was achieved by using a copper slag (CS) activated peroxodisulfate (PDS) Fenton system, with WS2 as a co-catalyst. The combined use of these two mine-sourced materials enables excellent pollution removal efficiency. CS can continuously release ferrous ions for the advanced oxidation processes (AOPs), while WS2 as a co-catalyst has key roles in acceleration of the rate-limiting step of Fe3+/Fe2+ conversion and prevention of Fe3+ precipitation. In this process, Fe3+/Fe2+ conversion primarily occurs on the surface of WS2, whereas PDS decomposition and BTA degradation are dominated by homogeneous Fenton reactions. Dissolved Fe2+ has a main role in the activation of PDS and generation of ROS. The contributions of free radicals, singlet oxygen and Fe(IV) in BTA degradation were carefully evaluated. Fe(IV) was identified as the major ROS responsible for degradation of BTA in the CS/WS2/PDS system. This was further confirmed by the Raman spectra and the detection of BTA degradation products formed by the transfer of oxygen atoms. Kinetics calculation showed that Fe(IV) was responsible for 63.4 % of the degradation of BTA. More importantly, water matrix had a low impact on the degradation of BTA due to the high selectivity of Fe(IV). This study provides a new strategy for a cost-effective and efficient decontamination of the environment in mining areas.",
publisher = "Elsevier",
journal = "Chemical Engineering Journal",
title = "Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI)",
volume = "451",
number = "3",
pages = "138888",
doi = "10.1016/j.cej.2022.138888"
}

Ma, B., Yao, J., Šolević Knudsen, T., Chen, Z., Pang, W., Liu, B., Cao, Y., Zhu, X.,& Zhao, C.. (2023). Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI). in Chemical Engineering Journal
Elsevier., 451(3), 138888.
https://doi.org/10.1016/j.cej.2022.138888

Ma B, Yao J, Šolević Knudsen T, Chen Z, Pang W, Liu B, Cao Y, Zhu X, Zhao C. Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI). in Chemical Engineering Journal. 2023;451(3):138888.
doi:10.1016/j.cej.2022.138888 .

Ma, Bo, Yao, Jun, Šolević Knudsen, Tatjana, Chen, Zhihui, Pang, Wancheng, Liu, Bang, Cao, Ying, Zhu, Xiaozhe, Zhao, Chenchen, "Co-catalytic effect of WS2 on the copper slag mediated peroxodisulfate activation for the simultaneous elimination of typical flotation reagent benzotriazole and Cr(VI)" in Chemical Engineering Journal, 451, no. 3 (2023):138888,
https://doi.org/10.1016/j.cej.2022.138888 . .

TY  - JOUR
AU  - Chen, Zhihui
AU  - Yao, Jun
AU  - Šolević Knudsen, Tatjana
AU  - Ma, Bo
AU  - Liu, Bang
AU  - Li, Haoa
AU  - Zhu, Xiaozhe
AU  - Zhao, Chenchen
AU  - Pang, Wancheng
AU  - Cao, Ying
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5267
AB  - The environmental impact of the mining industry requires efficient and eco-friendly technologies to mitigate the presence of mineral flotation reagents (MFRs) in mineral processing wastewater (MPW) prior to their discharge into the environment. In this work, for the first time, a robust, easily separable and reusable biocatalyst, Fe3O4@SiO2-NH2-Lac, was used for the degradation of a novel mineral flotation reagent 8-hydroxyquinoline (8-HQ). Under optimized conditions, Fe3O4@SiO2-NH2-Lac achieved 89.2% 8-HQ degradation efficiency within 6 h. The effect of the main constituents of MPW on 8-HQ degradation, including metal ions, organic solvents, surfactant, metal chelator and flotation frother was evaluated. The Fe3O4@SiO2-NH2-Lac also displayed favorable degradation efficiency of 8-HQ in real lead–zinc mine water. The biocatalyst could be easily recovered and had a satisfactory reusability, retaining 64.5% of 8-HQ degradation efficiency in the sixth reaction cycle. Identification of intermediate products revealed that Fe3O4@SiO2-NH2-Lac mediated reaction predominantly generated various structural 8-HQ oligomers/polymers. A potential degradation pathway for 8-HQ was speculated as follows: Fe3O4@SiO2-NH2-Lac initially catalyzed the oxidation of 8-HQ to yield the corresponding reactive radical intermediates, which subsequently undergone self-coupling reaction via C − C and C − O − C covalent coupling at their ortho and/or para positions, finally forming oligomers and polymers. The inhibition assays of marine bacterium (Vibrio fischeri) demonstrated that the toxicity of 8-HQ and its intermediate products was effectively reduced after Fe3O4@SiO2-NH2-Lac treatment. The results of this study might present an alternative immobilized laccase-based clean biotechnology for the clean-up and detoxification of 8-HQ contaminated MPW.
PB  - Elsevier
T2  - Chemical Engineering Journal
T1  - Degradation of novel mineral flotation reagent 8-hydroxyquinoline by superparamagnetic immobilized laccase: Effect, mechanism and toxicity evaluation
VL  - 432
SP  - 134239
DO  - 10.1016/j.cej.2021.134239
ER  - 

@article{
author = "Chen, Zhihui and Yao, Jun and Šolević Knudsen, Tatjana and Ma, Bo and Liu, Bang and Li, Haoa and Zhu, Xiaozhe and Zhao, Chenchen and Pang, Wancheng and Cao, Ying",
year = "2022",
abstract = "The environmental impact of the mining industry requires efficient and eco-friendly technologies to mitigate the presence of mineral flotation reagents (MFRs) in mineral processing wastewater (MPW) prior to their discharge into the environment. In this work, for the first time, a robust, easily separable and reusable biocatalyst, Fe3O4@SiO2-NH2-Lac, was used for the degradation of a novel mineral flotation reagent 8-hydroxyquinoline (8-HQ). Under optimized conditions, Fe3O4@SiO2-NH2-Lac achieved 89.2% 8-HQ degradation efficiency within 6 h. The effect of the main constituents of MPW on 8-HQ degradation, including metal ions, organic solvents, surfactant, metal chelator and flotation frother was evaluated. The Fe3O4@SiO2-NH2-Lac also displayed favorable degradation efficiency of 8-HQ in real lead–zinc mine water. The biocatalyst could be easily recovered and had a satisfactory reusability, retaining 64.5% of 8-HQ degradation efficiency in the sixth reaction cycle. Identification of intermediate products revealed that Fe3O4@SiO2-NH2-Lac mediated reaction predominantly generated various structural 8-HQ oligomers/polymers. A potential degradation pathway for 8-HQ was speculated as follows: Fe3O4@SiO2-NH2-Lac initially catalyzed the oxidation of 8-HQ to yield the corresponding reactive radical intermediates, which subsequently undergone self-coupling reaction via C − C and C − O − C covalent coupling at their ortho and/or para positions, finally forming oligomers and polymers. The inhibition assays of marine bacterium (Vibrio fischeri) demonstrated that the toxicity of 8-HQ and its intermediate products was effectively reduced after Fe3O4@SiO2-NH2-Lac treatment. The results of this study might present an alternative immobilized laccase-based clean biotechnology for the clean-up and detoxification of 8-HQ contaminated MPW.",
publisher = "Elsevier",
journal = "Chemical Engineering Journal",
title = "Degradation of novel mineral flotation reagent 8-hydroxyquinoline by superparamagnetic immobilized laccase: Effect, mechanism and toxicity evaluation",
volume = "432",
pages = "134239",
doi = "10.1016/j.cej.2021.134239"
}

Chen, Z., Yao, J., Šolević Knudsen, T., Ma, B., Liu, B., Li, H., Zhu, X., Zhao, C., Pang, W.,& Cao, Y.. (2022). Degradation of novel mineral flotation reagent 8-hydroxyquinoline by superparamagnetic immobilized laccase: Effect, mechanism and toxicity evaluation. in Chemical Engineering Journal
Elsevier., 432, 134239.
https://doi.org/10.1016/j.cej.2021.134239

Chen Z, Yao J, Šolević Knudsen T, Ma B, Liu B, Li H, Zhu X, Zhao C, Pang W, Cao Y. Degradation of novel mineral flotation reagent 8-hydroxyquinoline by superparamagnetic immobilized laccase: Effect, mechanism and toxicity evaluation. in Chemical Engineering Journal. 2022;432:134239.
doi:10.1016/j.cej.2021.134239 .

Chen, Zhihui, Yao, Jun, Šolević Knudsen, Tatjana, Ma, Bo, Liu, Bang, Li, Haoa, Zhu, Xiaozhe, Zhao, Chenchen, Pang, Wancheng, Cao, Ying, "Degradation of novel mineral flotation reagent 8-hydroxyquinoline by superparamagnetic immobilized laccase: Effect, mechanism and toxicity evaluation" in Chemical Engineering Journal, 432 (2022):134239,
https://doi.org/10.1016/j.cej.2021.134239 . .

TY  - JOUR
AU  - Ma, Bo
AU  - Yao, Jun
AU  - Šolević Knudsen, Tatjana
AU  - Chen, Zhihui
AU  - Liu, Bang
AU  - Zhao, Chenchen
AU  - Zhu, Xiaozhe
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5405
AB  - The heavy metal and organic pollution caused by mining activities keep attracting attention, thus an economic and efficient treatment for combined pollution is pressing. In this study, the simultaneous removal performance of typical organic flotation reagent 8-hydroxyquinoline (8-HQ) and Cr(VI) was investigated via heterogeneous Fenton process induced by a novel polydopamine (PDA) functionalized attapulgite supported nano sized zero-valent iron (nZVI) composite (PDA/ATP-nZVI). Batch experiments showed that PDA/ATP-nZVI had better catalytic reactivity and reduction ability than both ATP-nZVI and nZVI. Under acidic condition, 96.0% of 8-HQ was degraded accompanied with the 42.5% of total organic carbon (TOC) decrease, while 95.8% of Cr(VI) removal efficiency was accomplished by PDA/ATP-nZVI. PDA not only served as redox mediator in expediting electron transfer, but also acted as electron donor that accelerated transformation from Fe(III) to both dissolved Fe(II) and surface Fe(II), which resulted in the increased degradation of 8-HQ. The synergic removal behavior between 8-HQ and Cr(VI) was discussed and the reaction mechanism in the persulfate (PS)-PDA/ATP-nZVI system was also explored. This study developed a highly efficient heterogeneous catalyst, and demonstrated that the PS-PDA/ATP-nZVI system had a potential for remediation of mine environment polluted by both heavy metals and organic flotation reagents.
PB  - Elsevier
T2  - Journal of Hazardous Materials
T1  - Simultaneous removal of typical flotation reagent 8-hydroxyquinoline and Cr(VI) through heterogeneous Fenton-like processes mediated by polydopamine functionalized ATP supported nZVI
VL  - 424
IS  - 126698
DO  - 10.1016/j.jhazmat.2021.126698
ER  - 

@article{
author = "Ma, Bo and Yao, Jun and Šolević Knudsen, Tatjana and Chen, Zhihui and Liu, Bang and Zhao, Chenchen and Zhu, Xiaozhe",
year = "2022",
abstract = "The heavy metal and organic pollution caused by mining activities keep attracting attention, thus an economic and efficient treatment for combined pollution is pressing. In this study, the simultaneous removal performance of typical organic flotation reagent 8-hydroxyquinoline (8-HQ) and Cr(VI) was investigated via heterogeneous Fenton process induced by a novel polydopamine (PDA) functionalized attapulgite supported nano sized zero-valent iron (nZVI) composite (PDA/ATP-nZVI). Batch experiments showed that PDA/ATP-nZVI had better catalytic reactivity and reduction ability than both ATP-nZVI and nZVI. Under acidic condition, 96.0% of 8-HQ was degraded accompanied with the 42.5% of total organic carbon (TOC) decrease, while 95.8% of Cr(VI) removal efficiency was accomplished by PDA/ATP-nZVI. PDA not only served as redox mediator in expediting electron transfer, but also acted as electron donor that accelerated transformation from Fe(III) to both dissolved Fe(II) and surface Fe(II), which resulted in the increased degradation of 8-HQ. The synergic removal behavior between 8-HQ and Cr(VI) was discussed and the reaction mechanism in the persulfate (PS)-PDA/ATP-nZVI system was also explored. This study developed a highly efficient heterogeneous catalyst, and demonstrated that the PS-PDA/ATP-nZVI system had a potential for remediation of mine environment polluted by both heavy metals and organic flotation reagents.",
publisher = "Elsevier",
journal = "Journal of Hazardous Materials",
title = "Simultaneous removal of typical flotation reagent 8-hydroxyquinoline and Cr(VI) through heterogeneous Fenton-like processes mediated by polydopamine functionalized ATP supported nZVI",
volume = "424",
number = "126698",
doi = "10.1016/j.jhazmat.2021.126698"
}

Ma, B., Yao, J., Šolević Knudsen, T., Chen, Z., Liu, B., Zhao, C.,& Zhu, X.. (2022). Simultaneous removal of typical flotation reagent 8-hydroxyquinoline and Cr(VI) through heterogeneous Fenton-like processes mediated by polydopamine functionalized ATP supported nZVI. in Journal of Hazardous Materials
Elsevier., 424(126698).
https://doi.org/10.1016/j.jhazmat.2021.126698

Ma B, Yao J, Šolević Knudsen T, Chen Z, Liu B, Zhao C, Zhu X. Simultaneous removal of typical flotation reagent 8-hydroxyquinoline and Cr(VI) through heterogeneous Fenton-like processes mediated by polydopamine functionalized ATP supported nZVI. in Journal of Hazardous Materials. 2022;424(126698).
doi:10.1016/j.jhazmat.2021.126698 .

Ma, Bo, Yao, Jun, Šolević Knudsen, Tatjana, Chen, Zhihui, Liu, Bang, Zhao, Chenchen, Zhu, Xiaozhe, "Simultaneous removal of typical flotation reagent 8-hydroxyquinoline and Cr(VI) through heterogeneous Fenton-like processes mediated by polydopamine functionalized ATP supported nZVI" in Journal of Hazardous Materials, 424, no. 126698 (2022),
https://doi.org/10.1016/j.jhazmat.2021.126698 . .

TY  - JOUR
AU  - Ma, Bo
AU  - Yao, Jun
AU  - Chen, Zhihui
AU  - Liu, Bang
AU  - Kim, Jonghyok
AU  - Zhao, Chenchen
AU  - Zhu, Xiaozhe
AU  - Mihucz, Victor G.
AU  - Minkina, Tatiana
AU  - Šolević Knudsen, Tatjana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4759
AB  - In this study, a polydopamine (PDA) modified attapulgite (ATP) supported nano sized zero-valent iron (nZVI) composite (PDA/ATP-nZVI) was rapidly synthesized under acidic conditions, and employed to alleviate Cr(VI) toxicity from an aqueous solution. Kinetic studies revealed that Cr(VI) adsorption process followed the pseudo-second order model, suggesting chemisorption was the dominant adsorption mechanism. Liu isotherm adsorption model was able to better describe the Cr(VI) adsorption isotherm with the maximum adsorption capacity of 134.05 mg/g. The thermodynamic study demonstrated that the adsorption process occurred spontaneously, accompanied by the increase in entropy and endothermic reaction. Low concentrations of coexisting ions had negligible effects on the removal of Cr(VI), while high concentrations of interfering ions were able to facilitate the removal of Cr(VI). Reactive species test revealed that Fe2+ played a key role in Cr(VI) reduction by PDA/ATP-nZVI. PDA enhanced the elimination of Cr(VI) via donation of electrons to Cr(VI) and acceleration of Fe3+ transformation to Fe2+. Furthermore, PDA was able to effectively inhibit the leaching of iron species and generation of ferric hydroxide sludge. Mechanistic study revealed that 72% of Cr(VI) elimination was attributed to reduction/precipitation, while 28% of Cr(VI) elimination was due to the surface adsorption.
(1-4) in order to obtain adherence,
e.g.,
PB  - Elsevier
T2  - Chemosphere
T1  - Superior elimination of Cr(VI) using polydopamine functionalized attapulgite supported nZVI composite: Behavior and mechanism
VL  - 287
SP  - 131970
DO  - 10.1016/j.chemosphere.2021.131970
ER  - 

@article{
author = "Ma, Bo and Yao, Jun and Chen, Zhihui and Liu, Bang and Kim, Jonghyok and Zhao, Chenchen and Zhu, Xiaozhe and Mihucz, Victor G. and Minkina, Tatiana and Šolević Knudsen, Tatjana",
year = "2022",
abstract = "In this study, a polydopamine (PDA) modified attapulgite (ATP) supported nano sized zero-valent iron (nZVI) composite (PDA/ATP-nZVI) was rapidly synthesized under acidic conditions, and employed to alleviate Cr(VI) toxicity from an aqueous solution. Kinetic studies revealed that Cr(VI) adsorption process followed the pseudo-second order model, suggesting chemisorption was the dominant adsorption mechanism. Liu isotherm adsorption model was able to better describe the Cr(VI) adsorption isotherm with the maximum adsorption capacity of 134.05 mg/g. The thermodynamic study demonstrated that the adsorption process occurred spontaneously, accompanied by the increase in entropy and endothermic reaction. Low concentrations of coexisting ions had negligible effects on the removal of Cr(VI), while high concentrations of interfering ions were able to facilitate the removal of Cr(VI). Reactive species test revealed that Fe2+ played a key role in Cr(VI) reduction by PDA/ATP-nZVI. PDA enhanced the elimination of Cr(VI) via donation of electrons to Cr(VI) and acceleration of Fe3+ transformation to Fe2+. Furthermore, PDA was able to effectively inhibit the leaching of iron species and generation of ferric hydroxide sludge. Mechanistic study revealed that 72% of Cr(VI) elimination was attributed to reduction/precipitation, while 28% of Cr(VI) elimination was due to the surface adsorption.
(1-4) in order to obtain adherence,
e.g.,",
publisher = "Elsevier",
journal = "Chemosphere",
title = "Superior elimination of Cr(VI) using polydopamine functionalized attapulgite supported nZVI composite: Behavior and mechanism",
volume = "287",
pages = "131970",
doi = "10.1016/j.chemosphere.2021.131970"
}

Ma, B., Yao, J., Chen, Z., Liu, B., Kim, J., Zhao, C., Zhu, X., Mihucz, V. G., Minkina, T.,& Šolević Knudsen, T.. (2022). Superior elimination of Cr(VI) using polydopamine functionalized attapulgite supported nZVI composite: Behavior and mechanism. in Chemosphere
Elsevier., 287, 131970.
https://doi.org/10.1016/j.chemosphere.2021.131970

Ma B, Yao J, Chen Z, Liu B, Kim J, Zhao C, Zhu X, Mihucz VG, Minkina T, Šolević Knudsen T. Superior elimination of Cr(VI) using polydopamine functionalized attapulgite supported nZVI composite: Behavior and mechanism. in Chemosphere. 2022;287:131970.
doi:10.1016/j.chemosphere.2021.131970 .

Ma, Bo, Yao, Jun, Chen, Zhihui, Liu, Bang, Kim, Jonghyok, Zhao, Chenchen, Zhu, Xiaozhe, Mihucz, Victor G., Minkina, Tatiana, Šolević Knudsen, Tatjana, "Superior elimination of Cr(VI) using polydopamine functionalized attapulgite supported nZVI composite: Behavior and mechanism" in Chemosphere, 287 (2022):131970,
https://doi.org/10.1016/j.chemosphere.2021.131970 . .