活性黑KN-B在石墨烯表面的吸附行为  

ADSORPTION BEHAVIOR OF REACTIVE BLACK KN-B ON GRAPHENE SURFACE

作　　者：孙兆楠[1] 潘玉瑾 冷杰雯 王明秀 杨薇[1] 张南 SUN Zhao-nan;PAN Yu-jin;LENG Jie-wen;WANG Ming-xiu;YANG Wei;ZHANG Nan(Liaoning Key Laboratory of Chemical Additive Synthesis and Separation,Yingkou Institute of Technology,Yingkou 115014,China;Yingkou Environment Project Development Co.,Ltd,Yingkou 115014,China)

机构地区：[1]辽宁省化学助剂合成与分离重点实验室营口理工学院,辽宁营口115014 [2]营口市环境工程开发有限公司,辽宁营口115014

出　　处：《环境工程》2021年第12期114-119,共6页Environmental Engineering

基　　金：辽宁省化学助剂合成与分离重点实验室资助项目(ZJNK2014);2019年营口理工学院优秀科技人才支持计划(RC201905)。

摘　　要：采用石墨烯作为吸附剂,以活性黑KN-B为目标污染物模拟染料废水,考察吸附法处理活性黑KN-B模拟染料废水的影响因素及活性黑KN-B在石墨烯表面的吸附行为。结果表明:在投加2 g/L石墨烯,pH值为5.0,振荡速率为100 r/min, 40℃恒温下振荡60 min,吸附处理50 mg/L活性黑KN-B染料废水50 mL,对活性黑KN-B的去除率可达到94%,且稳定可行。研究发现,可利用Langmuir吸附等温线和准二级动力学描述活性黑KN-B在石墨烯表面的吸附行为,即单分子层化学吸附。Using graphene as the adsorbent, and reactive black KN-B as the target pollutant to simulate dye wastewater, the influencing factors of adsorption treatment of reactive black KN-B simulated dye wastewater and the adsorption behavior of reactive black KN-B on graphene surface were investigated. The results showed that under the optimum reaction condition of adding 2 g/L of graphene in 50 mL solution, pH value was 5.0, oscillating rate was 100 r/min, oscillating at 40 ℃ for 60 min, the removal rate of absorption 50 mg/L reactive black KN-B dye wastewater could reach 94%. It was found that Langmuir adsorption isotherm and quasi-second-order kinetics could be used to describe the adsorption behavior of reactive black KN-B on graphene surface, and then this course could be defined as monolayer chemisorption.

关 键 词：吸附法 石墨烯 活性黑KN-B 动力学 吸附机理 

分 类 号：X703[环境科学与工程—环境工程]