吉林大学学报(理学版) ›› 2019, Vol. 57 ›› Issue (3): 716-721.

• 环境科学 • 上一篇    下一篇

火山渣对地下水中Cd2+的吸附效果

张玉玲, 陈在星, 初文磊, 司超群, 邓志群, 崔小顺    

  1. 吉林大学 新能源与环境学院, 水资源与环境研究所, 长春 130021
  • 收稿日期:2018-11-09 出版日期:2019-05-26 发布日期:2019-05-20
  • 通讯作者: 张玉玲 E-mail:lingling29@126.com

Adsorption Effect on Cd2+ by Scoria in Groundwater

ZHANG Yuling, CHEN Zaixing, CHU Wenlei, SI Chaoqun, DENG Zhiqun, CUI Xiaoshun   

  1. Institute of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun 130021, China
  • Received:2018-11-09 Online:2019-05-26 Published:2019-05-20
  • Contact: HANG Yuling E-mail:lingling29@126.com

摘要: 针对水体中Cd2+污染问题, 采用生态安全型火山渣进行吸附低温水体中Cd2+的实验研究, 分析火山渣吸附Cd2+的效果及影响因素. 结果表明: 火山渣是一种具有潜在应用价值的Cd2+吸附剂, 1.00 g火山渣对10 ℃,0.5 mg/L水体中Cd2+的去除率达97.10%; 接近中性环境有利于吸附Cd2+; Ca2+,Mg2+,NO-3对火山渣吸附Cd2+有抑制作用, Fe2+和 Mn2+的抑制作用较小; 当NH+4和NO-2的质量浓度低于50 mg/L时, 对吸附无影响, 当其质量浓度大于50 mg/L时, 对吸附有抑制作用; SO2-4对吸附作用无影响; 质量浓度较大的HCO-3对吸附Cd2+有促进作用.

关键词: 火山渣, 地下水, 吸附, Cd离子, 影响因素

Abstract: Aiming at the problem of Cd2+ pollution in water, the experiment of Cd2+ adsorption by ecologically safe scoria in low temperature water was carried out, and we analyzed the effect and influence factors of Cd2+ adsorption by scoria. The results show that scoria is a kind of Cd2+ adsorbent with potential value. The removal rate reaches 97.10% in 0.5 mg/L Cd2+ solution using 1.00 g scoria at 10 ℃. The neutral environment is conducive to adsorbing Cd2+. 
Ca2+,Mg2+ and NO-3 in groundwater can inhibit the adsorption of Cd2+by scoria, while Fe2+ and Mn2+ have little inhibitory effect. When the mass concentrations of NH+4 and NO-2 are less than 50 mg/L, they have no effects on the adsorption of Cd2+ by scoria. When the mass concentrations are more than 50 mg/L, they have inhibitory effects on the absorption. SO2-4 has no effect on the adsorption. HCO-3 with higher mass concentration has promotion effect on the adsorption of Cd2+ by scoria.

Key words: scoria, groundwater, adsorption, Cd ion, influence factor

中图分类号: 

  • X532