三聚氰酸在活性炭纤维毡表面的吸附及电脱附行为的研究  

The Adsorption and Electric Desorption Behavior of Cyanuric Acid on Activated Carbon Fiber(ACF) Surface

作　　者：孙杰[1] 孙硕[1] 彭巧丽[1] 胡晶晶[1] 

机构地区：[1]中南民族大学化学与材料科学学院,催化材料科学湖北省暨国家民委-教育部重点实验室,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2014年第2期14-17,共4页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：国家自然科学基金资助项目(20807057);湖北省杰出青年基金资助项目(2011CDA106);武汉市工程中心计划资助项目(200950431227&201160638173)

摘　　要：利用活性炭纤维毡(ACF)对三聚氰酸进行了静态吸附和电脱附,通过透射电子显微镜(TEM)、场发射扫描电子显微镜(SEM)对ACF微观结构进行了表征,并通过高效液相色谱(HPLC)检测了三聚氰酸含量.研究了吸附平衡时间、pH等对静态吸附的影响,以及电解质浓度和脱附时间对电脱附率的影响.结果表明:ACF对三聚氰酸的吸附遵循准二级吸附动力学,符合Langmuir和Freundlich等温吸附模型,酸性环境能促进对三聚氰酸的吸附,pH=12时发生脱附再生,用ACF电脱附三聚氰酸最佳脱附时间15min时脱附率可达92.5%.Activated Carbon Fiber（ACF） was used to absorb and electrically desorb cyanuric acid and the microstructure was characterized by transmission electron microscope （TEM） and field emission scanning electron microscope （SEM）. The content of cyanuric acid was measured by using high performance liquid chromatography （I-IPLC）. The influence of adsorption equilibrium time and pH on absorption, the electrolyte concentration and desorption time on the rate of electric desorption were investigated. The results showed that the adsorption of cyanuric acid onto ACF followed pseudo-second order kinetics, in accord with the Langmuir and Freundlich adsorption isotherm model. Lower pH could enhance the adsorption capacity and alkaline environment （pH = 12） led to desorption regeneration. Desorption rate reached 92.5% when electrically desorbed 15 minutes.

关 键 词：活性炭纤维毡 三聚氰酸 准二级吸附动力学 电脱附 

分 类 号：TQ424.1[化学工程]