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- SHAFIQUZZAMAN Md.
- Department of Environmental Systems Engineering, Ritsumeikan University, Japan
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- HASAN Md. Mahmudul
- Department of Environmental Systems Engineering, Ritsumeikan University, Japan
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- NAKAJIMA Jun
- Department of Environmental Systems Engineering, Ritsumeikan University, Japan
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- MISHIMA Iori
- Center for Environmental Science in Saitama, Japan
抄録
A simple, low-cost filtration system composed of a ceramic filter, an iron net and iron bacterial sludge was developed to remove arsenic (As) from groundwater. The ceramic filter, made of an 80% clay soil and 20% rice bran mixture on a weight basis, was combined with the iron net and the iron bacterial sludge in a reactor, and the assembly (As removal filter) was tested for its ability to remove As from synthetic groundwater. Synthetic groundwater with a varying composition of As(III), ferrous iron (Fe(II)) and phosphate phosphorus (P) was filtered on a daily basis. The results showed that both Fe(II) in groundwater and those released from the iron net were oxidized biologically and/or physico-chemically and that As and P were effectively removed by adsorption and/or co-precipitation processes. The concentrations of Fe(II) and P in groundwater were decisive factors in the removal of As . Groundwater Fe concentrations of ≥ 2 mg/L and P concentrations of ≤ 3 mg/L with an Fe/P molar ratio of ≥ 3.0 were required to achieve an effluent As concentration of less than 50 μg/L from raw water containing 500 μg/L of As(III). This simple, inexpensive filter could be used to treat As in contaminated regions.
収録刊行物
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- Journal of Water and Environment Technology
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Journal of Water and Environment Technology 9 (3), 333-347, 2011
公益社団法人 日本水環境学会
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詳細情報 詳細情報について
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- CRID
- 1390001205180884480
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- NII論文ID
- 130001190408
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- ISSN
- 13482165
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可