摘要
以厌氧颗粒污泥为生物吸附剂,研究了Cu2+吸附过程的动力学和热力学、污泥投加量和pH值对吸附效果的影响。结果表明:厌氧颗粒污泥对Cu2+的吸附过程为吸热、熵增的自发过程,可用伪二级反应动力学模型和Langmuir、Freundlich等温方程进行拟合;溶液温度为35℃、pH值为5时吸附效果最好。
In order to investigate the adsorption of Cu^2＋ by anaerobic granular sludge, adsorption kinetics, adsorption thermo- dynamics, the effect of sludge dosage and pH had been studied. Results showed that adsorption process was spontaneous and endo- thermic in nature. Both Langmuir and Freundlich isotherm equations could describe the adsorption process well. When the solu- tion temperature maintained 35℃, pH value was 6 -7, a good adsorption could be obtained.
出处
《环境科学与管理》
CAS
2014年第4期104-108,共5页
Environmental Science and Management
基金
江苏省科技型企业技术创新资金项目(BC2012184)
江苏省教育厅高校科研成果产业化项目(JHB2012-51)
关键词
厌氧颗粒污泥
CU^2+
等温吸附
吸附动力学
anaerobic granular sludge
Cu^2＋
isothermal adsorption
adsorption dynamics
