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Adsorption of nicotine from aqueous solutions on montmorillonite and acid – modified montmorillonite

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Authors
Ilić, Irena
Jović-Jovičić, Nataša
Banković, Predrag
Mojović, Zorica
Lončarević, Davor
Gržetić, Ivan
Milutinović Nikolić, Aleksandra
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Abstract
Montmorillonite (Mt) and acid modified montmorillonite (MtA) were tested as nicotine adsorbents. The samples were characterized using FT-IR spectroscopy and low temperature nitrogen physisorption. Nicotine adsorption was performed with respect to contact time, pH and initial nicotine concentration. The kinetics of adsorption obeyed the pseudo-second-order kinetics. The optimal pH values for nicotine adsorption were 6 and 9 for Mt and MtA, respectively. The isotherms related to adsorption on Mt at pH = 6 and 9 as well as for MtA at pH=6 were best fitted with Sips isotherm model, while adsorption onto MtA at pH=9 obeyed Langmuir isotherm model.
Монморијонит (Mt) и кисело модификован монморијонит (MtA) су испитани као адсорбенси никотина. Узорци су окарактерисани FT-IR спектроскопијом и нискотемпературном физисорпцијом азота. Адсорпција никотина испитивана је у зависности од времена контакта, pH и почетне концентрације никотина. Псеудодруги ред добро описује кинетику адсорпције. Оптимална pH вредност за адсорпцију никотина на Mt је 6 док је за MtA 9. Сипсов модел најбоље описује адсорпцију никотина на Mt на pH = 6 и 9 као и на MtA на pH = 6, док се aдсорпција на MtA на pH = 9 одвија по Лангмировом моделу.
Keywords:
Adsorption / Acid modification / Montmorillonite / Nicotine / адсорпција / кисела модофикација / монморијонит / никотин
Source:
Science of sintering, 2019, 51, 1, 93-100
Publisher:
  • International Institute for the Science of Sintering, Beograd
Projects:
  • Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes (RS-45001)

DOI: 10.2298/SOS1901093I

ISSN: 0350-820X

WoS: 000496247800008

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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/3460
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