Removal of Arsenic in Aqueous Solutions by Adsorption onto Waste Rice Husk
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- 作者：Md. Nurul Amin ; Satoshi Kaneco ; Taichi Kitagawa ; Aleya Begum ; Hideyuki Katsumata ; Tohru Suzuki ; Kiyohisa Ohta
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2006
- 出版时间：November 22, 2006
- 年：2006
- 卷：45
- 期：24
- 页码：8105 - 8110
- 全文大小：75K
- 年卷期：v.45,no.24(November 22, 2006)
- ISSN：1520-5045
文摘
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 anypretreatment 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 bothAs(III) and As(V) under the following conditions: initial As concentration, 100 
g/L; rice husk amount, 6 g;average particle size, 780 and 510 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 therange of 71-96%. The present study might provide new avenues to achieve the arsenic concentrations requiredfor drinking water recommended by Bangladesh and the World Health Organization (WHO).
g/L; rice husk amount, 6 g;average particle size, 780 and 510 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 therange of 71-96%. The present study might provide new avenues to achieve the arsenic concentrations requiredfor drinking water recommended by Bangladesh and the World Health Organization (WHO).