Absorption ofCd2+at Low Concentration by Wheat Straw and Wheat Straw Derived-biochar
Abstract：Wheat straw and wheat straw derived-biochar were taken as the research object.Adsorption property and its influential factors of Cd2+at low concentration to the wheat straw and wheat straw derived-biochar in aque-ous solution were investigated.The results indicated that adsorption isotherm fit well with Langmiur equation,ad-sorption equilibrium of Cd2+on wheat straw and wheat straw derived-biochar almost reached in 10 minutes.Under the experimental condition,the removal rate of Cd2+on biochar was over 90%,which was 70%on wheat straw. There was significant effect of pH values on adsorption of Cd2+by the biochar and wheat straw,temperature had effects on adsorption of Cd2+by wheat straw,but there was no significant effect of temperature on adsorption of Cd2+by the biochar.When 0.5 g/L wheat straw or biochar were used,there was no effect of different dosing quan-tity on adsorption of Cd2+by wheat straw and its derived-biochar.
Keywords：wheat strawabsorptionbiocharCd2+
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 12-19 )