Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium
Joint Authors
Jian-min, Shu
Xing-run, Wang
Yan-xia, Zhang
Qi, Wang
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-31
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
With the building wastes contaminated by chromium in Haibei Chemical Plan in China as objects, we studied the contents of total Cr and Cr (VI) of different sizes, analyzed the effect of 6 different washing agents, discussed the removal mechanisms of 6 different washing agents for Cr in various forms, and finally selected applicable washing agent.
As per the results, particle size had little impact on the contents of total Cr and Cr (VI); after one washing with water, the removal rate of total Cr and Cr (VI) was 75% and 78%, respectively, and after the second washing with 6 agents, the removal rate of citric acid was the highest, above 90% for total Cr and above 99% for hexavalent chromium; the pH of building wastes were reduced by citric acid, and under acid condition, hexavalent chromium was reduced to trivalent chromium spontaneously by organic acid, which led to better removal rate of acid soluble Cr and reducible Cr; due to the complexing action, citric acid had best removal rate for oxidizable trivalent chromium.
In conclusion, citric acid is the most applicable second washing agent for building wastes.
American Psychological Association (APA)
Xing-run, Wang& Yan-xia, Zhang& Qi, Wang& Jian-min, Shu. 2012. Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-461511
Modern Language Association (MLA)
Xing-run, Wang…[et al.]. Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium. The Scientific World Journal No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-461511
American Medical Association (AMA)
Xing-run, Wang& Yan-xia, Zhang& Qi, Wang& Jian-min, Shu. Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-461511
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-461511