Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine

2015
Authors
Ekmeščić, BojanaMaksin, Danijela

Marković, J.P.
Vuković, Zorica
Hercigonja, Radmila
Nastasović, Aleksandra

Onjia, Antonije E.

Article (Published version)
Metadata
Show full item recordAbstract
The presented study describes macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) [PGME] functionalized with diethylenetriamine [PGME-deta] as a potential recovery agent for Mo(VI) oxyanions from aqueous solutions. Sorption studies were carried out by varying experimental conditions (pH, time, concentration, temperature). Kinetics of Mo(VI) sorption was investigated in batch (static) experiments, in the temperature range 298-343K. Sorption dynamics data were fitted to seven chemical-reaction and particle-diffusion models. The kinetics studies showed that Mo(VI) sorption adhered to the pseudo-second-order model under all investigated operating conditions. The sorption kinetics was determined to be governed by both the intraparticle diffusion and the external film diffusion to a lesser extent. The temperature rise promotes the molybdate species removal, with the maximum experimental uptake capacity of 4.02mmolg- 1 at 298K, at the selected pH which is con...sistent with the predominance range of hydrolized polynuclear Mo(VI) forms and optimum electrostatic attraction.
Keywords:
Diethylenetriamine / Macroporous crosslinked copolymer / Mo(VI) recovery / Sorption kineticsSource:
Arabian Journal of Chemistry, 2015Publisher:
- Elsevier
Projects:
- Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden (RS-43009)
- Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes (RS-45001)
- Oxide-based environmentally-friendly porous materials for genotoxic substances removal (RS-172018)
DOI: 10.1016/j.arabjc.2015.11.010
ISSN: 1878-5352