四环素在活性炭上的吸附行为及机理  

Performance and mechanism of adsorption of tetracycline on activated carbons

作　　者：陈建[1,2] 王京平[1,2] 张根成[1,2] 

机构地区：[1]江苏省滩涂生物资源与环境保护重点建设实验室,盐城224051 [2]盐城师范学院化学化工学院,盐城224051

出　　处：《环境工程学报》2012年第12期4493-4496,共4页Chinese Journal of Environmental Engineering

基　　金：江苏省高校自然科学基础研究项目资助(12KJB610006);江苏省滩涂生物资源与环境保护重点建设实验室开放项目(JLCBE 12030)

摘　　要：考察了活性炭和四环素的相关性质,并通过静态吸附实验探讨了2种活性炭对四环素的吸附和脱附行为,以及pH值、离子强度等水化学条件对活性炭吸附四环素的影响。结果表明,四环素在活性炭上的吸附基本不受离子强度影响;但随着pH值上升,其吸附量下降。四环素在活性炭上吸附的驱动力可能为两者所含官能团间的氢键作用。The adsorption and desorption of tetracycline were investigated employing two kinds of activated car- bons as the adsorbents. The impacts of pH and ionic strength on the adsorption, related properties of activated carbons and tetracycline were studied to explore the adsorption mechanism. The results indicated that the adsorption capacity is not impacted by the ionic strength, while increasing pH weakens the adsorption. And fairly strong H-bonding be- tween functional groups of activated carbons and the tetracycline molecules was proved to drive the adsorption.

关 键 词：四环素 活性炭 吸附 脱附 

分 类 号：X703[环境科学与工程—环境工程]