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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 302 - 311 (10page)
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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 effective sorbents for the removal of As from contaminated water streams.
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참고문헌 (45)
참고문헌 신청
Anjum, A. / 2011 / Removal of As(III) from aqueous solutions using montmorillonite / Journal of Analytical Sciences, Methods and Instrumentation 1:25~30
Appel, C. / 2003 / Point of zero charge determination in soils and minerals via traditional methods and detection of electroacoustic mobility / Geoderma 113:77~93
As¸c ı, Y. / 2008 / A comparative study for the sorption of Cd(II) by soils with different clay contents and mineralogy and the recovery of Cd(II) using rhamnolipid biosurfactant / Journal of Hazardous Materials 154:663~673
Bachmaf, S. / 2011 / Sorption of uranium(VI) at the clay mineral–water interface / Environmental Earth Sciences 63:925~934
Bhattacharyya, K. G. / 2008 / Adsorption of a few heavy metals on natural and modified kaolinite and montmorillonite:A review / Advances in Colloid and Interface Science 140:114~131
Appel, C. / 2003 / Point of zero charge determination in soils and minerals via traditional methods and detection of electroacoustic mobility / Geoderma 113:77~93
As¸c ı, Y. / 2008 / A comparative study for the sorption of Cd(II) by soils with different clay contents and mineralogy and the recovery of Cd(II) using rhamnolipid biosurfactant / Journal of Hazardous Materials 154:663~673
Bachmaf, S. / 2011 / Sorption of uranium(VI) at the clay mineral–water interface / Environmental Earth Sciences 63:925~934
Bhattacharyya, K. G. / 2008 / Adsorption of a few heavy metals on natural and modified kaolinite and montmorillonite:A review / Advances in Colloid and Interface Science 140:114~131
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