Optimization of As(V) removal using chitosan-coated bentonite from groundwater using Box-Behnken design: effects of adsorbent mass, flow rate, and initial concentration

doi:10.1080/19443994.2015.1094420

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/30950

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Title:	Optimization of As(V) removal using chitosan-coated bentonite from groundwater using Box-Behnken design: effects of adsorbent mass, flow rate, and initial concentration
Authors:	Arida, Carlo Vic J. de Luna, Mark Daniel G. Morales Futalan, Cybelle Wan, Meng-Wei
Contributors:	Univ Philippines Diliman, Environm Engn Unit Univ Philippines Diliman, Dept Chem Engn Frontier Oil Corp, Operat Dept Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
Keywords:	Arsenate Chitosan Fixed-bed Box-Behnken design Yoon-Nelson alumina
Date:	2016
Issue Date:	2018-01-18 11:38:33 (UTC+8)
Publisher:	Taylor & Francis Inc
Abstract:	This work focused on the removal of As(V) using chitosan-coated bentonite (CCB) from groundwater in a fixed-bed system. Thomas and Yoon-Nelson models were applied to the experimental data in order to predict breakthrough curves and assess model parameters. Response surface methodology based on Box-Behnken design was utilized to optimize parameters such as adsorbent mass (6.0-8.0g), flow rate (0.6-1.0mL/min), and initial concentration (100-500g/g) and to evaluate the interactive effects of the variables on the As(V) adsorption capacity at breakthrough point. Results showed that the optimum As(V) uptake capacity at breakthrough point of 10.57g/g could be attained at initial concentration of 418.12g/g, CCB mass of 6.6g, and flow rate of 0.65mL/min. Based on the analysis of variance, the high value of coefficient of determination (R(2)0.9712) indicates that the quadratic model best describes the experimental data, and the initial concentration is a significant factor on the As(V) adsorption capacity at breakthrough point.
Relation:	Desalination and Water Treatment, v.57 n.40, pp.18739-18747
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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