Study on Adsorption of Heavy Metal Ions Pb and As by Soil Minerals
In this paper,soil minerals are taken as the research object,and the micro-mechanism of soil adsorption of Pb and As with different patterns is explored through adsorption experiments.The results show that pH value affects the existence morphology of Pb and As in solution and soil adsorption capacity,at low pH,Pb mainly exists in the form of positive divalent,while As mainly exists in the form of neutral H3AsO3 and negatively charged H2AsO3-,and the adsorption capacity of soil for Pb increases with the increase of pH value,while the adsorption capacity of As decreased with increase of pH value.
万方数据
维普
