摘要
采用静态法研究了碳纳米管（cNTs）对废水中氨氮的吸附性能，考察了CNTs投加量、pH值和吸附时间等因素对吸附行为的影响，与此同时还进行了氨氮吸附等温线和吸附动力学实验，并利用XRD进行了表征。结果表明，在pH值为7～9，CNTs用量为7mg，吸附时间为50min时，CNTs对50mg/L的氨氮模拟废水吸附效果达到最好。且吸附数值遵循Freundlieh等温吸附模型，吸附过程符合Bangham吸附速率方程。
The adsorption of ammonia nitrogen by CNTs is cliseussed, the effects of CNTs dosage, pH and adsorption lime on the adsorption are investigated, meanwhile ammonia nitrogen adsorption isotherms and adsorption klneties experiments are conducted and also the adsorption is eharacterizated by power X- my diiffraction（XRD）. The results show that, when pH and the dosage of CNTs is 7 - 9 and 7rag respectively, the adsorption effieiency of CNTs on ammonia nitrogen wastewater of 50 mg/L is best in 50 mins of adsorption. The adsorption of ammonia nitrogen by CNTs meets the Fmundlieh isotherm equa tion and Bangham equation.
出处
《工业安全与环保》
北大核心
2014年第3期24-26,30,共4页
Industrial Safety and Environmental Protection
基金
福建省教育厅A类科技项目(JA12281)
福建省泉州市科技项目(2011Z22)
关键词
碳纳米管
氨氮
吸附
carbon nanotubes ammonia nitrogen adsorption
