Study on adsorption law of humic acid and heavy metals in loess
Taking loess,humic acid and heavy metal ions as the research objects,based on the adsorption experiment,the adsorption law of loess on humic acid and Cu2+,Zn2+,Pb2+ and Cd2+ was studied.The results indicate that the removal rate of various pollutants by loess increases significantly with the increase of solid-liquid ratio,solution pH,initial concentration reduction,and prolongation of adsorption time,and the impact on the adsorption efficiency of different pollutants is also different;however,the adsorption capacity of loess for heavy metal ions has always been maintained at Pb2+＞Cu2+＞Cd2+＞Zn2+.
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