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.
作者
孙兆楠
潘玉瑾
冷杰雯
王明秀
杨薇
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)
出处
《环境工程》
CAS
CSCD
北大核心
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)。
关键词
吸附法
石墨烯
活性黑KN-B
动力学
吸附机理
adsorption method
graphene
reactive black KN-B
dynamics
adsorption mechanism
