摘要
对经碱处理和醚化接枝的改性玉米秸秆吸附剂进行了结构表征、吸附条件优化、吸附动力学及吸附等温线研究。结果表明,对于200mg/L的Cr(Ⅵ)废水,改性玉米秸秆吸附剂最佳吸附条件:吸附剂投加量为1.0g,反应温度为40℃,pH=3,反应时间为300min。吸附过程服从准二级动力学方程,吸附等温线符合Langmuir模型。
Corn stalks were used as adsorbent modified by alkalization, etherification and grafting. The struc- ture,opitmum conditions,dynamics, and adsorpiton isothermal curve of the adsorbent were studied. Results showed that optimum conditions for adsorption of the asdorbent were adsorbent dosage of 1.0 g, reaction temperature of 40 ℃,pHi3 and reaction time of 300 min for Cr（VI） solution of 200 mg/L. The adsorption process was well fitted to quasi-second-order kinetic equation and Langmuir isothermal equation.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2016年第3期67-71,共5页
Environmental Pollution & Control
基金
广东省对外科技合作项目(No.2014A050503065)
广东省科技计划项目(No.2015B020215012)
广州市产学研协同创新重大专项(No.201508030039)
