Arsenate and fluoride removal from groundwater by sawdust impregnated ferric hydroxide and activated alumina (SFAA)

被引：0

作者：

Dhanasekaran, P. ^{[1
]}

Sahu, Omprakash ^{[2
]}

机构：

[1] Department of Chemical Engineering, UIE, Chandigarh University, Punjab,140413, India

[2] Department of Petroleum Engineering, UIE Chandigarh University, Punjab,14i0413, India

来源：

Groundwater for Sustainable Development | 2021年 / 12卷

关键词：

Aluminum oxide - Fluorine compounds - Groundwater - Potable water - Activated alumina;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Arsenate (As(V)) and Fluoride (F‾) are toxic elements found naturally in groundwater by natural and anthropogenic sources. Excess intake of Arsenate and Fluoride through drinking water cause several health effects; hence both must be removed from groundwater and make it potable. ‘Anjili’ tree Sawdust chemically modified by Ferric hydroxide and Activated Alumina (SFAA) used as an adsorbent. SFAA was characterized and the results are presented. The effect of initial concentration and contact time were studied. As(V) and F− adsorption by SFAA followed Freundlich adsorption isotherm, maximum sorption occurred at pH 6.5 and sorption kinetics followed the Pseudo-second-order model. The sorption capacity at 303 K and low initial concentration were found to be 2.42 mg/g for F, 0.10 mg/g for As(V). The column study gives an effective removal of both from the water. Among different models, Clark model fits well for arsenic and fluoride adsorption by SFAA. © 2020

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