电石渣/偏高岭土固化铜污染土淋滤特性试验
作者:
作者单位:

同济大学

作者简介:

通讯作者:

中图分类号:

TP15

基金项目:

国家自然科学基金项目(41422207)


Leaching characteristic of solidification/ stabilization for Cu2+ contaminated soils with carbide slag and metakaolin
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    针对不同配比的电石渣/偏高岭土固化铜污染土,进行毒性浸出试验(TCLP淋滤试验),分析固化剂掺量对淋滤特性的影响规律,优选确定了电石渣和偏高岭土固化铜污染土的最佳配比,对类似实际工程具有借鉴意义。结果表明,电石渣掺量增加会使浸出液pH增加而Cu2+浓度下降,但当电石渣掺量超过9%以后滤出液的Cu2+浓度则无明显改变;偏高岭土掺量增加会使滤出液pH略微下降,而Cu2+浓度先下降后上升。基于试验结果,优选电石渣掺量为10%、偏高岭土掺量为5%时,地聚合物对2%铜污染土的固化/稳定化效果最好。

    Abstract:

    The geopolymer, consists of carbide slag (CS) and metakaolin (MK), was used to solidify and stabilize the Cu2+ contaminated soils. A series of toxic characteristic leaching procedure (TCLP) tests were conducted on the solidified soils and then the optimal contents of CS and MK were selected for this geopolymer. The results obtained from laboratory experiments show that the pH of leaching solution increases and the Cu2+ concentration decreases with the increases in CS content, while the Cu2+concentration does not continue to reduce when the CS content is more than 9%. As MK content increases, the pH of leaching solution decreases slightly, but the Cu2+concentration firstly decreases and then increases. Based on the results, the optimal contents of CS and MK were selected for this geopolymer to be 10% and 5%, respectively.

    参考文献
    相似文献
    引证文献
引用本文

陈永贵.电石渣/偏高岭土固化铜污染土淋滤特性试验[J].同济大学学报(自然科学版),2018,46(02):182~187

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2017-08-16
  • 最后修改日期:2017-12-07
  • 录用日期:2017-11-13
  • 在线发布日期: 2018-03-20
  • 出版日期: