Removal of arsenic in aqueous solutions by adsorption onto waste rice husk

被引：157

作者：

Amin, Md. Nurul ^{[1
]}

Kaneco, Satoshi

Kitagawa, Taichi

Begum, Aleya

Katsumata, Hideyuki

Suzuki, Tohru

Ohta, Kiyohisa

机构：

[1] Mie Univ, Dept Chem Mat, Fac Engn, Tsu, Mie 5148507, Japan

[2] Mie Univ, Environm Preservat Ctr, Tsu, Mie 5148507, Japan

[3] Univ Dhaka, Dept Zool, Dhaka 1000, Bangladesh

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2006年 / 45卷 / 24期

关键词：

D O I：

10.1021/ie060344j

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Rice husk has tremendous potential as a remediation material for the removal of arsenic from groundwater. The present work investigates the possibility of the use of rice husk adsorption technology without any pretreatment in the removal of arsenic from aqueous media. Various conditions that affect the adsorption/desorption of arsenic are investigated. Adsorption column methods show the complete removal of both As(III) and As(V) under the following conditions: initial As concentration, 100 mu g/L; rice husk amount, 6 g; average particle size, 780 and 510 mu m; treatment flow rate, 6.7 and 1.7 mL/min; and pH, 6.5 and 6.0, respectively. The desorption efficiencies with 1 M of KOH after the treatment of groundwater were in the range of 71-96%. The present study might provide new avenues to achieve the arsenic concentrations required for drinking water recommended by Bangladesh and the World Health Organization (WHO).

引用

页码：8105 / 8110

页数：6

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