改性花生壳对Cu^(2+)的吸附  

ADSORPTION OF COPPER (Ⅱ) ON MODIFIED PEANUT SHELLS

作　　者：施薇[1] 严素定[1,2] 唐大平 

机构地区：[1]湖北师范学院化学与环境工程学院,黄石435002 [2]污染物分析与资源化技术湖北省重点实验室,黄石435002 [3]黄石市环境保护研究所,黄石435000

出　　处：《离子交换与吸附》2012年第5期442-448,共7页Ion Exchange and Adsorption

基　　金：湖北省教育厅中青年项目(Q20112502);湖北省高等学校优秀中青年科技创新团队项目(T201007)资助

摘　　要：以农林废弃物花生壳作为吸附剂对废水中的Cu2+进行吸附。结果表明,花生壳的最佳改性方法为KMnO4改性法。在50mLCu2+浓度为10mg/L的水样中,改性花生壳的最佳吸附条件为:298K下投加4mesh筛上改性花生壳0.8g,pH=5,吸附75min,此时改性花生壳对Cu2+吸附率高达96.80%。KMnO4改性花生壳对Cu2+的吸附以Langmuir方程拟合更佳。Peanut shells were chosen as adsorbents and the adsorption of Cu^2＋ from simulated wastewater was studied. The results showed that the best modification method of peanut shells was determined as reaction with potassium permanganate. The results of orthogonal tests showed that, in the 50mL cupric wastewater with concentration of 10mg/L, optimum adsorption performance of peanut shells was achieved in the following conditions, under 298K and pH value was 5, 0.8g modified peanut shells of ＋4 mesh sieve were added to adsorb Cu^2＋ for 75min, the removal efficiency of could reach 96.80%. Langmuir model was more suitable for describing the adsorption of Cu^2＋ on modified peanut shells.

关 键 词：改性花生壳 吸附 CU2+ 

分 类 号：X13[环境科学与工程—环境科学]