Study on Predictive Models for the Adsorptivity of Carbonaceous Materials on Pb(Ⅱ)Based on Soil Organic Matter Content of the Soil in the Expressway
Six different concentrations of DOM solutions were extracted from a series of surface soil of the expressway with different SOM content diluted by the same soil.The DOM solutions were then used to load DOM onto AC,MWCNT and two biochars(BC400 and BC700),respectively,obtaining a total of 28 CM and CM-XSOM complex samples.These CM and CM-XSOM complex samples were then determined for their adsorption capacity for Pb(Ⅱ).The relationships between DOM concentration and SOM content,between QDOM and DOM concentration,between Qacidity and QDOM,as well as between QPb and Qacidity are studied.Results showed that:1)A prediction model of the relationship between adsorption content of carbonaceous materials in soil of expressway on Pb(Ⅱ)and SOM content was established based on the deduction of their linear relationships;2)According to the prediction model,the adsorption capacity of carbonaceous materials in soil of expressway on Pb(Ⅱ)can be predicted easily and fastly by measuring the SOM content.
carbonaceous materialsoil organic matterdissolved organic matterheavy metal adsorptionpredictive model
万方数据
维普
