粉末活性炭对硝基氯苯类污染物的吸附特性研究  

Adsorption Characteristic of Nitrochlorobenzenes in Water by Powdered Activated Carbon

作　　者：纪峰[1,2] 朱灵敏[2] 贾丽莉[2] 姜旭[2] 罗文斌[2] 曲莉[2] 慕先峰[2] 周明[2] 陈晓霞[2] 李圭白[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [2]哈尔滨供排水集团水质中心,黑龙江哈尔滨150080

出　　处：《中国给水排水》2010年第7期105-108,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07420-005)

摘　　要：采用间歇试验研究了硝基氯苯和2,4-二硝基氯苯在粉末活性炭(PAC)上的吸附特性,并分析了二者的吸附动力学和吸附热力学行为。结果表明,硝基氯苯和2,4-二硝基氯苯在PAC上的吸附行为符合Freundlich方程,当PAC投量为20 mg/L、吸附时间为120 min时,硝基氯苯和2,4-二硝基氯苯的平衡浓度分别为0.027 9、0.77 mg/L。硝基氯苯和2,4-二硝基氯苯在PAC上的吸附行为符合假二级反应动力学,且吸附能力随反应温度的降低而增强。在实际应用PAC控制硝基氯苯和2,4-二硝基氯苯时,应根据化合物的性质酌情考虑PAC的最佳投量。Batch experiments were conducted to investigate the adsorption of nitrochlorobenzene and 2,4-dinitrochlorobenzene on powdered activated carbon （PAC） and analyze the kinetics and thermodynamics of their adsorption. The results indicate that the adsorption behaviors of nitrochlorobenzene and 2,4-dinitrochlorobenzene on PAC are fitted to Freundlieh equation. Equilibrium concentrations of nitrochlorobenzene and 2,4-dinitroehlorobenzene are 0. 027 9 mg/L and 0.77 mg/L respectively when PAC dosage is 20 mg/L and adsorption time is 120 min. The adsorption behaviors of nitrochlorobenzene and 2,4-dinitrochlorobenzene on PAC follow the pseudo-second-order kinetics, and the adsorption ability is enhanced as the reaction temperature decreases. The optimal PAC dosage should be considered according to compound property when PAC is used to control nitrochlorobenzene and 2,4-dinitrochlorobenzene in water.

关 键 词：粉末活性炭 硝基氯苯 2 4-二硝基氯苯 吸附特性 FREUNDLICH方程 间歇试验 

分 类 号：X52[环境科学与工程—环境工程]