摘要
研究了改性高粱秸秆对Cr(Ⅵ)的吸附性能,结果表明,改性高粱秸秆对水溶液中Cr(Ⅵ)具有很好的吸附作用。常温下,用0.15g改性高粱秸秆,对20mL pH为2.5,ρ[Cr(Ⅵ)]为20mg/L的溶液,振荡吸附100 min,Cr(Ⅵ)的去除率可达98.11%。改性高粱秸秆对水溶液中Cr(VI)的吸附符合Freundlich吸附等温方程和Langmuir吸附等温方程,说明该吸附过程以单分子层物理吸附为主。
The adsorption properties of modified sorghum stalk for Cr（Ⅵ） were determined.The results showed that the modified sorghum stalk had a good adsorption behavior to Cr（Ⅵ）.At room temperature,the removal efficiency of 0.15g modified sorghum stalk under 100 min vibration time for Cr（Ⅵ） solution with condition of 20 mL,20 mg/L and pH 2.5 can be up to 98.11%.The adsorption behavior of modified sorghum stalk for Cr（Ⅵ） in aqueous solution is accorded with Freundlich and Langmuir adsorption isotherms equation,which indicated that the adsorption process relies mainly on monomolecular physical adsorption.
出处
《电镀与精饰》
CAS
北大核心
2010年第8期5-8,共4页
Plating & Finishing
基金
山西省高校科技研究开发项目(No.20091147)
忻州师院科研基金项目(No.200907)
