椰壳炭吸附去除四环素性能及机理研究  

Study on the Adsorption Performance and Mechanism of Coconut Shell Carbon on Tetracycline in Water

作　　者：李钲 王国栋[1] 陈日耀[1,2] 陈晓 丁蕊[1,2] 金延超 LI Zheng;WANG Guodong;CHEN Riyao;CHEN Xiao;DING Rui;JIN Yanchao(College of Environmental and Resource Sciences/College of Carbon Neutral Modern Industry,Fujian Normal University,Fuzhou 350117,China;Fujian Key Laboratory of Pollution Control&Resource Reuse,Fuzhou 350117,China)

机构地区：[1]福建师范大学环境与资源学院/碳中和现代产业学院,福建福州350117 [2]福建省污染控制与资源循环利用重点实验室,福建福州350117

出　　处：《福建师范大学学报（自然科学版）》2023年第5期117-123,共7页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(22006016);福建省科技厅引导性项目(2021Y0009)。

摘　　要：资源化利用椰壳炭作为吸附剂去除水中四环素,对其进行了详细表征,研究了pH值、椰壳炭投加量、四环素初始质量浓度对吸附性能的影响,并探究了吸附机理.结果表明,椰壳炭以微孔和介孔为主,比表面积达478.45 m^(2)·g^(-1).初始质量浓度为50 mg·L^(-1)的四环素废水,投加500 mg·L^(-1)椰壳炭,处理15 min,去除率可达98%.椰壳炭对四环素的吸附符合Langmuir等温吸附模型,以单分子层表面吸附为主,吸附过程符合准一级吸附动力学模型,主要为物理吸附.Resourceful use of coconut shell charcoal as an adsorbent to remove tetracycline from water was thoroughly characterized,and the effects of pH,the amount of coconut shell charcoal dosed,and the initial concentration of tetracycline on the adsorption performance were investigated and the adsorption mechanism was explored,The results showed that the specific surface area of coconut shell carbon amounted to 478.45 m^(2)·g^(-1),with dominance of micropores and mesopores Coconut shell charcoal was dosed with 500 mg·L^(-1) of tetracycline at an initial concentration of 50 mg·L^(-1) and treated for 15 min to remove up to 98%.The adsorption of tetracycline by coconut shell carbon conformed to the Langmuir isothermal adsorption model,which was dominated by adsorption on the surface of the monomolecular layer,and the adsorption process conformed to the quasi-primary adsorption kinetic model,which was mainly physical adsorption.

关 键 词：椰壳炭 吸附 四环素 废水处理 机理 

分 类 号：TQ1509[化学工程—电化学工业] O646[理学—物理化学]