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Removal of arsenate and arsenite from aqueous solution by adsorption on clay minerals

التفاصيل البيبلوغرافية
العنوان: Removal of arsenate and arsenite from aqueous solution by adsorption on clay minerals
المؤلفون: Woosik Jung, Akhil N. Kabra, Byong-Hun Jeon, Amir Lakzian, Nasrin Ghorbanzadeh, Akram Halajnia
المصدر: Geosystem Engineering. 18:302-311
بيانات النشر: Informa UK Limited, 2015.
سنة النشر: 2015
مصطلحات موضوعية: Environmental Engineering, Inorganic chemistry, Arsenate, chemistry.chemical_element, Sorption, Pollution, chemistry.chemical_compound, Montmorillonite, chemistry, Kaolinite, Freundlich equation, Clay minerals, Waste Management and Disposal, Arsenic, Arsenite
الوصف: Sorption of arsenic species [As(V) and As(III)] on different clay minerals including kaolinite (KGa-1), montmorillonite (SWy-1), and nontronites (NAU-1 and NAU-2) with respect to sorption kinetics, isotherms and pH was investigated. As(V) and As(III) sorption on clay minerals was significantly influenced by pH. Higher sorption of As(V) was observed at low pH that decreased above pH 5.0, while As(III) sorption was maximum around pH 7.0. The sorption kinetics was well described by the pseudo-second-order equation for both As(V) and As(III). Among the tested clay minerals, NAU-2 was most effective for the removal of arsenic with rate constants of 0.084 and 0.056 g mg− 1 min− 1 for As(V) and As(III), respectively. A good correlation was observed between adsorbing capacity (qe) and equilibrium mass concentration (Ce) using the isothermal Freundlich adsorption model for SWy-1, NAU-1, and NAU-2 minerals as indicated by the high values of R2 coefficient. Our results indicate that clay minerals can serve as effect...
تدمد: 2166-3394
1226-9328
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::c5dbf1d43aad828c6110579ab1aef552
https://doi.org/10.1080/12269328.2015.1062436
رقم الأكسشن: edsair.doi...........c5dbf1d43aad828c6110579ab1aef552
قاعدة البيانات: OpenAIRE
الوصف
تدمد:21663394
12269328