骨炭对水中不同形态Sb吸附和解吸的影响  

Effect of bone char on adsorption and desorption of Sb(Ⅲ) and Sb(Ⅴ) in solution

作　　者：徐峰[1,2] 黄益宗[2] 蔡立群[1] 孙晓铧[2] 刘崇敏[2] 王斐[2] 李季[2] 

机构地区：[1]甘肃农业大学资源与环境学院,兰州730070 [2]中国科学院生态环境研究中心,北京100085

出　　处：《环境工程学报》2013年第12期4659-4665,共7页Chinese Journal of Environmental Engineering

基　　金：国家重金属污染治理专项;国家水体污染控制与治理科技重大专项资助(2009ZX07212-001-05)

摘　　要：采用骨炭作为吸附剂，研究其在不同骨炭用量、pH值和温度条件下对水中Sb（Ⅲ）和Sb（Ⅴ）吸附和解吸的影响。结果表明，骨炭对Sb（Ⅲ）的吸附效果远好于Sb（V），在0．2～8．0mmol／L的Sb（Ⅲ）和Sb（Ⅴ）浓度下，骨炭对这2种形态Sb的去除率分别为46．1％～78．6％和9．6％～31．7％。采用Langmuir方程和Freundlich方程均可以很好地拟合骨炭对Sb（Ⅲ）和Sb（Ⅴ）的吸附，Sb（Ⅲ）和Sb（Ⅴ）的最大吸附容量分别为110．1034mg/g和17．4167mg／g。骨炭对Sb（Ⅲ）的解吸也大于对Sb（Ⅴ）的解吸。骨炭对Sb（Ⅲ）和Sb（Ⅴ）的吸附受不同骨炭用量、pH值和温度影响。The research focused on the influence of different bone char dosage, pH and temeperature on the adsorption and desorption of Sb （ III ） and Sb（ V ） in solution. The results showed that the adsorption of Sb（III ） by bone char was much better than that of Sb （ V ） . At the concentrations of 0.2 - 8.0 mmol/L in solution, the removal rates of Sb（III） and Sb（V） by bone char were 46. 1% -78.6% and 9.6% -31.7%, respectively. The adsorption of behavior and mechanism of Sb（ III ） and Sb （ V ） on bone char were studied. The adsorption of Sb（ III ） and Sb（ V ） by bone char could be fitted well by Langmuir isotherm equation and Freundlich equation, and the theoretical maximum adsorption of Sb（ III ） and Sb（ V ） were 110.10 mg/g and 17.41 mg/g, respectively. Besides, the desorption of Sb（ III） by bone char in solution was greater than that of Sb （ V ）. The adsorption of Sb（ m ） and SB（ V ） by bone char were affected by bone char dosage, pH, and temperature.

关 键 词：骨炭 锑 吸附 解吸 形态 

分 类 号：X53[环境科学与工程—环境工程]