摘要
用乙醇作分散剂,共沉淀法合成了纳米氢氧化镁。并用XRD、SEM等技术手段对样品作了表征。结果表明,制备的样品粒径分布均匀、团聚程度小,大小在200 nm左右。同时研究了纳米氢氧化镁用于含铬废水的处理,得到较好的效果,5 min时已经基本吸附完全,最大吸附量达到了102 mg/g,是普通氢氧化镁的2.5倍;回收后的氢氧化镁经焙烧后,可以多次用于含铬废水的处理。
Nanocrystalline magnesium hydroxide was prepared by the method of co-precipitation with ethanol as dispersant. The samples were characterized by the technology of XRD and SEM. The results indicated that the samples were Composed of nanometer-sized particles which have better dispersion performance and uniformity distribution. The resulted magnesium hydroxide was used as treatment reagent to treat waste-water containing chromium. The saturation adsorbing capability of Mg（OH）2 is 102mg/g, witch is better than that of commercial magnesium hydroxide.
出处
《科技通报》
2007年第1期141-145,共5页
Bulletin of Science and Technology
关键词
纳米
分散剂
氢氧化镁
含铬废水
nanocrystalline
dispersant
magnesium hydroxide
wastewater containing chromium
