烯啶虫胺在超高交联吸附树脂上的吸附性能研究.pdf

第25卷第1期化学研究与应用Vol 25. No2013年1月Chemical Research and Applicationjan.文章编号:1004-1656(2013)01-009505烯啶虫胺在超高交联吸附树脂上的吸附性能研究唐树和”,陈建,吴秀红(江苏省滩涂生物资源与环境保护重点建设实验室;盐城师范学院应用化学与环境工程研究所,江苏盐城224051)摘要:硏究了烯啶虫胺在NDA-150和NDA-1800超高交联吸附树脂上的静态吸附行为。静态吸附等温线表明:两种树脂对烯啶虫胺的吸附均为放热过程,吸附量随着温度的升高而降低,适当降低温度有利于吸附。吸附等温线符合 Freundlich方程,为多分子层吸附。吸附速率随着温度的升高而增大,且表观活化能小于20KmoI,说明吸附较容易进行。NDA150树脂对烯啶虫胺吸附及脱附性能较好,动态吸附量为351.1mgg。在323K温度条件下,用95%乙醇作脱附剂,体积10BV(床体积)时,脱附率为96.43%。关键词:超高交联吸附树脂;烯啶虫胺;吸附;脱附中图分类号:0647.3文献标志码:AAdsorption properties of nitenpyram onto hypercrosslinked polymeric resinsTANG Shu-he, CHEN Jian, WU Xiu-hongJiangsu Provincial Key Iab of Coastal Wetland Bioresources and Environ.Protection Institute of Appl. Chem. and Environ. Eng. of Yancheng Teachers University, Jiangsu 224051)Abstract: The adsorption thermodynamics and kinetics of nitenp ram from aqueous solution onto the NDA-150 and NDA-1800 hy-pecos ike lme n w e e i asin tems inaed that the adsorption is an exothermic processwith a raised adsorption capacity under desing temperature And the adsoption isotherms are well described by Frendrich equation suggesting a multilayer adsorption. The kinetic experiment results demonstrated that the adsorption rate is improved by increasing emperature. The apparent activation energy s ess than 0.mol which inicates a favorable adsorption. The efficiency ofadsorption and desorption is excellent that of nitenpyram no NDA-150 resin, the adsorption capacity is 351. 1 mg, and desorption was operated with the 95%ethanol as desorption agent, under 323 K, the desorption rate reaches 96.43%, after the treatment with 10 BV of the solution mentioned aboveKey words: hypercrosslinked polymeric resins; nitenpyram; adsorption; desorption烯啶虫胺( nitenpyram)为新型氯代烟碱类杀成为农药主导产品,但其生产废水的治理技术相虫剂,主要作用于昆虫神经,它具有高效、低毒、对对滞后,相关报导很少。其废水治理常采用大量环境安全、初效快、持效长、高内吸性、无交互抗性水稀释后生化处理或蒸馏除盐后生化处理。这些等优良性能,广泛用于水稻、蔬菜、果树等作物害技术前者浪费大量水资源,后者运行成本较高、污虫的防治。目前,烯啶虫胺等烟碱类杀虫剂已盐处理困难。收稿日期:2012-07-18;修回日期:2012-1107基金项目: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( JLCBE11011);江苏省高校自然科学基础研究项目(12KJD150012)联系人简介:唐树和(1956-),女,教授。主要从事废水治理及资源化研究。E-mail:tsh_cn163.com