选择性高分子离子交换树脂处理含砷废水

第25卷第6期1998年12月湖南大学学报JOURNALOFHUNANUNIVERSITYVo1．25，No．67一0选择性高分子离子交换树脂处理含砷废水嚣x——葡爵天车鬲究所，中国长抄，‘10。82)、收As(I)并使树脂再生循环使用．。√姜竺苎脂，三价砷离子，选择性吸附分离禺孑事r蕾分类号∞·讲质水废d雄．ChelatingResinContainingMercaptoGroupsHuTianjueZengGuangmingChenWeipingLiXiaohong(InstituteofEnvironmentalProtection，HunanUniv，410082，Changsha·PRChina)AbstractAselectivechelatingresincontainingmercaptogroupswhichispreparedfrommethacrylate2，3-epioxypropylestermonomerissynthesized．Theresinexhibitshighaffinityforarsenic(I)ion．Inthecolumnmethod．arsenic(I)ioninanaqueousSO-1utionisfavorablyadsorbedontheresinwhenthesodiumarsenitesolution(pH5．0)containing5g／Lofarsenic(I)ionispassedthroughtheresincolumnatavolumnofflowof600mL／handtreatmenttemperature：<50℃．Theadsorptionremova1rateisover99．99andthesolutionremovedarsenic(If)ionachievesfullystartdardstate．Thearsenic(I)ionadsorbediselutedbyflowing2mol／Lsodiumhydroxidesolutioncontaining5ofsodiumhydrogensulfidetopassthroughthecolumnandtheresinisresumed．Keywordschelatingresin，arsenic(II)ion，selec