Simultaneous Removal of Cadmium and Turbidity in Contaminated Soil-washing Water by Electroflotation
نویسندگان
چکیده
The removal of cadmium and turbidity from contaminated soil-washing water was studied by Electroflotation (EF) at the laboratory scale by using sodium lauryl sulfate (SLS) as an anionic surfactant, and calcium hydroxide (Ca(OH)2) as a coagulant. The stoichiometric cadmium to collector (SLS) and coagulant (Ca(OH)2) ratio was 1:4.5. Significant removal of cadmium (100 %, not detected in the residual) and turbidity (95.7 %) was obtained by EF without any coagulant additions. As a consequence, EF is considered an effective method to separate cadmium and turbidity from contaminated soil-washing water. The EF process may have practical applications for the removal of other hazardous metals from contaminated soil-washing water.
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