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双酚A的活性炭吸附特性
Adsorption Principles of Biphenol-A by Activated Carbon
【摘要】 研究了活性炭吸附双酚A(BPA)的规律、吸附特性和吸附处理效果。结果表明:吸附速度快,1 h达到平衡。吸附符合弗兰德利希公式,吸附常数K=191 m g/g,1n=0.239。吸附容量大,且受被吸附质浓度的影响小。当pH>9和有其他有机物存在时,因BPA发生电离和竞争吸附使吸附容量减小,吸附规律发生变化。但活性炭吸附可使BPA浓度降低到0.08 m g/L以下,是处理含BPA废水的一种有效方法。
【Abstract】 Adsorption of biphenol-A(BPA) by activated carbon was studied.Adsorption velocity is rapid,and the liquid-solid equilibrium is accomplished within 1 h.The relationship between the quantity of solute adsorbed per unit mass of adsorbent and the solution concentration at the equilibrium state can be described by Freudlich isotherm equilibrium model: qe=Kc1n,while K=191 mg/g,1n=0.239.When pH>9 and other organic compounds existing,adsorption capacity reduces and the principle of adsorption changes because of BPA ionization and compertitive adsorption.However,using activated carbon adsorption method,the effluent BPA concentration can be achieved less than(0.08) mg/L.Adsorption by activated carbon is one of the effective methods for BPA containing wastewater treatment.
【Key words】 activated carbon; adsorption; bisphenol-A; wastewater treatment;
- 【文献出处】 华东理工大学学报(自然科学版) ,Journal of East China University of Science and Technology(Natural Science Edition) , 编辑部邮箱 ,2006年04期
- 【分类号】X703
- 【被引频次】52
- 【下载频次】846