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自70年代初,工业上应用螯合树脂处理含重金属废水以来,人们对这一领域的研究十分注目。目前国内已工业化的螯合树脂如亚胺二乙酸基型,大网状巯基型等,品种虽还不多,但在废水处理方面和在富集、分离,分析等技术中应用的优越性和广泛性,已引起人们的高度重视。我们以丙烯酸酯类,二乙烯苯(DVB)和水合肼等为原料,制得骨架上含有肼基(—NHNH_2)的大网状螯合树脂(以下简称MRH树脂),它对汞(Ⅱ)金属离子具有良好的螯合性能,并且容易洗脱再生。
Since the early 70s, the industrial application of chelating resins to treat wastewater containing heavy metals has drawn great attention in this area. At present, the industrialized chelating resins in China such as imide diacetic acid type, macroreticular mercapto type and so on are few in variety. However, the superiority of application in wastewater treatment and enrichment, separation and analysis Extensive, has attracted people’s attention. We use acrylic acid esters, divinylbenzene (DVB) and hydrazine hydrate as raw materials to prepare macroreticular chelate resin (-NHH 2) Metal ions have good chelating properties and are easy to elute and regenerate.