摘要
采用乙醇分散法制备了纳米羟基铁修饰的玉米苞叶和竹笋壳的活性炭复合物(记为nFeOOH@AC),分析了nFeOOH@AC对水样中亚甲基蓝的吸附性能及动力学机理。研究表明,nFeOOH@AC对亚甲基蓝的吸附以化学吸附为主,符合准二级动力学模型。在亚甲基蓝初始质量浓度为3~120 mg/L,体积为50 mL,nFeOOH@AC投加量为10 mg,pH为3~12,吸附时间为1~24 h时,吸附率随着pH升高而增大,随着亚甲基蓝初始浓度的增大先增后减,随着吸附时间的增加而增加。nFeOOH@AC可以作为一种新型环境友好型吸附剂应用于亚甲基蓝废水处理。
The nano-hydroxyferric modified activated carbon(nFeOOH@AC)was prepared by ethanol dispersion method with corn bracts and bamboo shoot shells,and the adsorption performance and kinetic mechanism of nFeOOH@AC for methylene blue in water samples were analyzed.The results showed that the adsorption of methylene blue on nFeOOH@AC was mainly chemisorption,which conformed to the quasi-second-order kinetic model.When methylene blue initial concentration was 3-120 mg/L,volume was 50 mL,dosage of nFeOOH@AC was 10 mg,pH was 3-12,adsorption time was 1-24 h,the adsorption ratio increased with the increase of pH and adsorption time,first increased and then decreased with the increase of methylene blue initial concentration.nFeOOH@AC could be used as a new environment-friendly adsorbent in the treatment of methylene blue wastewater.
作者
吴婷
姚晨飞
郝仕油
陈雯萱
喻曼
范宏
WU Ting;YAO Chenfei;HAO Shiyou;CHEN Wenxuan;YU Man;FAN Hong(College of Chemical and Biological Engineering,Zhejiang University,Hangzhou Zhejiang 310027;Xingzhi College,Zhejiang Normal University,Jinhua Zhejiang 321004;Institute of Environment,Resource,Soil and Fertilizer,Zhejiang Academy of Agricultural Sciences,Hangzhou Zhejiang 310021)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2023年第8期1096-1100,共5页
Environmental Pollution & Control
基金
国家自然科学基金资助项目(No.21876158)
国家重点研发计划项目(No.2017YFE0116000)
金华市科技局计划项目(No.20214347)。
关键词
羟基铁
活性炭
亚甲基蓝
吸附
hydroxyferric
activated carbon
methylene blue
adsorption
