Simultaneous removal of chromium and arsenate from contaminated
groundwater by ferrous sulfate: Batch uptake behavior |
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| Authors: | Xiaohong Guan Haoran Dong Jun Ma and Irene M C Lo |
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| Institution: | 1. State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China
2. Department of Civil and Environmental Engineering,The Hong Kong University of Science and Technology,Hong Kong 999077,China |
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| Abstract: | Chromium and/or arsenate removal by Fe(II) as a function of pH,Fe(II) dosage and initial Cr(VI)/As(V) ratio were examined in batch tests.The presence of arsenate reduced the removal efficiency of chromium by Fe(II),while the presence of chromate significantly increased the removal efficiency of arsenate by Fe(II) at pH 6-8.In the absence of arsenate,chromium removal by Fe(II) increased to a maximum with increasing pH from 4 to 7 and then decreased with a further increase in pH.The increment in Fe(II) dosage... |
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| Keywords: | chromium removal arsenate removal ferrous iron groundwater treatment |
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