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1、中国环境科学2016,36(9):2599~2605ChinaEnvironmentalScience水雾协同微波脱附再生树脂吸附剂*金玉娇,卢晗锋,周瑛,朱秋莲,孙晓燕,陈银飞(浙江工业大学化学工程学院,催化反应工程研究所,浙江杭州310014)摘要:以溶剂热法合成的聚二乙烯苯(PDVB)树脂为吸附剂,苯、甲苯、二氯甲烷为典型的非极性吸附质,对比单一微波和超声雾化水协同微波条件下树脂的脱附再生效果,考察微波功率、水雾量、吸附质种类等对树脂脱附效果的影响.结果表明,PDVB树脂在单一微波作用下对非极性有机分子的脱附率
2、约为50%,而在超声雾化水协同作用下,PDVB对苯、甲苯、二氯甲烷的脱附率均可达到90%以上.同时脱附床层的温度始终保持在40℃以下,不会造成树脂高温老化,多次吸附/脱附循环再生后,树脂结构仍能保持稳定,表明在微波条件下引入超声雾化水可强化体系的微波吸收能力,实现树脂吸附剂的快速脱附再生.关键词:PDVB树脂;非极性有机物;微波脱附;雾化水;再生中图分类号:X511文献标识码:A文章编号:1000-6923(2016)09-2599-07Desorptionofnon-polarorganicsonPDVBresin
3、undermicrowaveradiationcooperatedwithatomizedwater.JIN*Yu-jiao,LUHan-feng,ZHOUYing,ZHUQiu-lian,SUNXiao-yan,CHENYin-fei(InstituteofCatalyticReactionEngineering,CollegeofChemicalEngineering,ZhejiangUniversityofTechnology,Hangzhou310014,China).ChinaEnvironmentalSc
4、ience,2016,36(9):2599~2605Abstract:Polydivinylbenzene(PDVB)resinsynthesizedbysolvothermalmethodwasusedasanadsorbent,andbenzene,tolueneandmethylenechloridewereselectedastypicalnon-polarorganicpollutants.Desorptionperformanceofnon-polarorganicmoleculesonPDVBunder
5、singlemicrowaveirradiationwascomparedwithwhichintroducedofultrasonicatomizedwater.Theinfluenceofmicrowavepower,atomizedwateramount,andtypesofadsorbateonresinregenerationwasinvestigated.Thedesorptionratioofnon-polarorganicsisabout50%undersinglemicrowaveirradiati
6、on,whilethedesorptionratiowouldreachabove90%undermicrowaveradiationcooperatedwithultrasonicatomizedwaterinconditionof640Wmicrowavepowerand0.105g/minatomizedwateramount.Thetemperatureofregenerationbedkeptbelow40℃,andwouldnotleadtoresinaging,alsoresinstructurerem
7、ainedstableafterrepeatedlyadsorptionanddesorption.Introducingofultrasonicatomizedwaterwouldenhancemicrowaveabsorbability,andimproveresinregenerationefficiency.Keywords:PDVBresin;non-polarorganics;microwavedesorption;atomizedwater;regeneration[13-15]吸附法是目前工业上广泛采
8、用的治理挥发面快速脱附出来.但对于非极性有机分子,吸[1-4]性有机化合物(VOCs)的技术,但吸附剂再生收微波能力较差,采用单一微波加热方式来实现[5-8]困难问题一直制约着吸附技术的发展.基于吸附剂与吸附质的分离显得较为困难.分子水平的微波再生技术相较于传统的热再生水分子作为常见的极性分子,能迅速吸收微技术,具有快速升温、高效节能、选择性加