摘要
通过反复沉淀法和蒸发溶剂法改性普通石英砂滤料（２０～４０目），制备处理含重金属离子废水的新型吸附过滤材料；利用电子显微镜及电子衍射等考察了其表面形态及组成；测定了材料表面的固着性能与Ｃｄ￣（２＋），Ｃｒ￣（３＋）等的吸附能力。结果表明，所制备的材料能有效吸附Ｃｄ￣（２＋）、Ｃｒ￣（３＋）等离子；蒸发溶剂法所制备的样品的比表面积较反复沉淀法的大，微观表面结构也更粗糙复杂；材料表面铁氧化物由γ－Ｆｅ＿２Ｏ＿３、ＦｅＯ（ＯＨ）组成。
A new adsorbent filter media, sand coated with iron hydroxide, has been developed totreat metal-bearing wastewater. The experimental results demonstrate that the oxide-coatedsand removed heavy metal ions from wastewater effectively. The oxide coatings were stable whilethey were expoSed to acidic solutions or moderate abrasion. This process offers a promising means to obtain good treatment results for metal-bearing wastewater.
出处
《环境科学研究》
EI
CAS
CSCD
1994年第6期46-50,共5页
Research of Environmental Sciences
关键词
吸附
过滤
重金属离子
材料
废水处理
Adsorptive filtration
Heavy metal ion-bearing
Wastewater
Media
