Comparison of different washing agents for disposal of chromium-contaminated construction waste

WANG Xingrun; ZHANG Yanxia; WANG Qi; SHU Jianmin

doi:10.3969/j.issn.0438-1157.2012.10.035

您当前的位置：

首页 >

文章列表页 >

Comparison of different washing agents for disposal of chromium-contaminated construction waste

更新时间：2025-12-10

- Comparison of different washing agents for disposal of chromium-contaminated construction waste
- CIESC Journal Issue 10, Pages: 3255-3261(2012)
- 作者机构：
  
  1. 中国环境科学研究院环境基准与风险评估国家重点实验室,北京,100012
  2. 西北农林科技大学理学院, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.10.035
  CLC： 705
- Online First：05 October 2012，
  
  Published：05 October 2012
- 稿件说明：
移动端阅览
WANG Xingrun, ZHANG Yanxia, WANG Qi, et al. Comparison of different washing agents for disposal of chromium-contaminated construction waste[J]. CIESC Journal, 2012, (10): 3255-3261.
DOI：

WANG Xingrun, ZHANG Yanxia, WANG Qi, et al. Comparison of different washing agents for disposal of chromium-contaminated construction waste[J]. CIESC Journal, 2012, (10): 3255-3261. DOI： 10.3969/j.issn.0438-1157.2012.10.035.

摘要

以海北化工厂的铬污染建筑废物为研究对象

采用改良的BCR顺序提取法研究了不同洗涤药剂对水洗一次后的建筑废物样品总Cr和Cr6+的清洗效果

分析了6种洗涤药剂对各形态铬的去除效果

并最终筛选出最佳的清洗剂。结果表明:柠檬酸和高浓度盐酸对总Cr和Cr6+去除率最高

总铬达到90%以上

Cr6+达到99%以上;高浓度柠檬酸、高浓度盐酸和高浓度醋酸降低了建筑废物的pH值

在酸性条件下Cr6+被有机酸自发地还原成Cr3+

导致Cr6+具有很好的去除效果;6种洗涤剂均对酸可提取态铬有很好的去除;由于络合作用

柠檬酸对可氧化态存在的Cr3+的去除效果很好。综上

柠檬酸是较合适的建筑废物二次洗涤药剂。

Abstract

The chromium-contaminated construction wastes of the Haibei Chemical Plant were selected as test sample.The removal efficiencies of the total Cr and Cr6+ of six different washing agents were investigated to find a suitable washing agent by using the modified BCR method.The removal mechanisms of various forms of chromium by six kinds of washing agents were studied.The total Cr and Cr6+ removal rates were very high for citric acid and concentrated hydrochloric acid

more than 90% of total Cr

more than 99% of Cr6+. Concentrated citric acid

concentrated hydrochloric acid and concentrated acetic acid reduced the pH value of the construction waste

and in acidic conditions Cr6+ was reduced to Cr3+ by organic matter.Six kinds of washing agents were very efficient for acid extractable chromium removal.Due to complexation

citric acid was very good for oxidized state chromium removal.Citric acid was the best washing agent after careful consideration of economic and environmental factors.

关键词

Keywords

references

Views

241

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Potential of phosphorus recovery from sludge-based hydrochar by wet chemical method

Cybernetic modeling for citric acid fermentation by Aspergillus niger

Corrosion health status assessment method for refining unit pipeline based on GLAE-MLP

Effect of belt structure design on the vulcanization characteristics of all-steel radial tires

Physics-informed spatio-temporal graph convolutional network for fermentation processes

Related Author

XU Jin

ZHU Jiedong

LI Juanli

LIU Mengqiu

GONG Heluo

HAN Lingyu

CHENG Baokun

ZHENG Xiaomei

Related Institution

College of Environment and Ecology, Chongqing University

Key Laboratory of Three Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University

Department of Automation, Shanghai Jiao Tong University

Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences

⁰