活性炭对水体中典型醛肟类选冶药剂的吸附研究  

Research on removal of typical salicylaldoxime agent for mineral dressing and smelting in water by activated carbon

作　　者：黄小天 李海普[1] 刘旸[1] HUANG Xiao-tian;LI Hai-pu;LIU Yang(Center for Environment&Water Resources,College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China)

机构地区：[1]中南大学化学与化工学院中南大学环境与水资源研究中心,长沙410083

出　　处：《工业用水与废水》2021年第4期10-14,共5页Industrial Water & Wastewater

基　　金：公益性行业(农业)专项科研(201503108)

摘　　要：对活性炭吸附去除环境水样中水杨醛肟类选冶药剂效果进行考察,探讨活性炭对水中水杨醛肟和5-壬基水杨醛肟的吸附效果影响因素。研究结果表明,吸附过程在240 min可达到平衡,符合伪二级动力学模型,属于化学吸附。吸附质的初始浓度、温度、pH值均会对吸附效果有不同程度的影响。在温度为25℃,pH值为9条件下能达到最佳去除效果,水杨醛肟和5-壬基水杨醛肟的去除效率分别可达到95%和98%。稀释剂煤油的存在会与醛肟类目标物发生竞争吸附,从而降低去除效率。The effect of activated carbon adsorbing and removing salicyladoxime agent for mineral dressing and smelting in water was investigated,the influencing factors of salicyladoxime and 5-nonyl salicylaldoximes removal by activated carbon were discussed.The results of the study showed that,the adsorption process could reach equilibrium in 240 min,which conformed to pseudo-second-order kinetics model and belongs to chemisorption.Initial concentration of adsorbate,temperature and pH value affect the adsorption to different degrees.The best removal effect was achieved under the condition that the temperature was 25℃,the pH value was 9,the removal rates of salicylaldoxime and 5-nonyl salicylaldoximes were 95%and 98%respectively.The presence of diluent can compete with the aldoxime target for adsorption,thus reducing the removal efficiency.

关 键 词：活性炭 吸附 选冶药剂 水杨醛肟 PH值 温度 稀释剂 

分 类 号：X703.5[环境科学与工程—环境工程]