Effect of Biochars on Adsorption of Cu(Ⅱ), Pb(Ⅱ) and Cd(Ⅱ) by an Oxisol from Hainan, China

摘要：

　　The biochars were prepared from the straws of canola and peanut using an oxygen-limited pyrolysis method at 350 ℃.The effect ofbiochars on adsorption ofCu(Ⅱ),Pb(Ⅱ) and Cd(Ⅱ) by an Oxisol from Hainan,China was investigated.Results indicated that incorporation of biochars increased the adsorption of Cu(Ⅱ),Pb(Ⅱ) and Cd(Ⅱ) by the soil,peanut straw char induced more increase in the adsorption of three metals.The increased percentage for Cd(Ⅱ) adsorption induced by biochars was much greater than that for the adsorption of Cu(Ⅱ) and Pb(Ⅱ).Biochars increased metal adsorption by the variable charge soil through electrostatic and non-electrostatic mechanisms,the relative contribution of the two mechanisms varied with metals and biochars.

关键词： Biochar Adsorption-desorption Cu(Ⅱ) Pb(Ⅱ) Cd(Ⅱ) Variable charge soil

作者: Renkou Xu Anzhen Zhao M.M.Masud

作者单位: State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy o State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy o

会议类型: 国际会议

会议名称: the 16th Meeting of the International Humic Substances Society (第十六届国际腐殖物质学会大会(IHSS 16))

会议地点: 杭州

会议语种:英文

页码: 554-556

在线出版日期: 2012-09-09（万方平台首次上网日期，不代表论文的发表时间）