摘要
为了开发新疆中低品位膨润土的应用领域,采用以地产中低品位膨润土为原料制备的改性膨润土,对乌鲁木齐东郊污水厂污水中有机污染物COD吸附行为进行了研究。结果表明,在最佳吸附条件下,其穿透吸附容量为52.79mg/g土,吸附等温式符合Linear模型,通过吸附动力学公式计算吸附活化能为28.07 kJ/mol。采用灼烧实验,初步研究了改性膨润土的再生的可行性。
Modified bentonite with local low and medium grade was used to adsorb COD of Urumqi Eastern Wastewater Treatment Plant,and its adsorption behavior was studied.Results showed that the penetration adsorption capability of modified bentonite was 52.79%mg/g at the optimum adsorption condition,with adsorption isotherm in line with linear model.By adsorption kinetics study,the adsorption activation energy was 28.07KJ/mol.The burning test was conducted to study the feasibility of recycle of modified bentonite.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2007年第5期83-85,共3页
Environmental Science & Technology
基金
新疆自治区科技攻关和重点科技项目(200332108)
关键词
改性膨润土
COD
城市污水
吸附
吸附动力学
modified bentonite
COD
municipal wastewater
adsorption
adsorption kinetics
