Adsorption characteristics of arsenic species from aqueous solution on natural solid
Batch and column experiments were conducted on arsenic adsorption from aqueous solution by natural solids to test the feasibility of these materials to act as adsorbent for As removal from groundwater and drinking water. The solids considered were natural hematite and natural siderite. The As species studied were As(Ⅴ), As(Ⅲ) and dimethylarsinic acid (DMA). Arsenic(Ⅲ), As(Ⅴ) and DMA were removed to different extents by the solids studied. The As adsorption took place more slowly on natural hematite and natural siderite compared with ferrihydrite. The results demonstrate that the amount of As removed from As(Ⅲ) batches was greater than that from As(Ⅴ) batches. The highest efficiency for As retention was observed on hematite HIOl in the batch experiments. Siderite used as column filling was more efficient in removing As from water containing the As species studied in comparison with hematite.
H.M.Guo Q.C.Yu H.L.Wang D.Stüben Z.Berner
School of Water Resources and Environment, China University of Geosciences, Beijing, P.R.China Institute for Mineralogy and Geochemistry, University Karlsruhe (TH), Karlsruhe, Germany
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
1053-1057
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）