Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium
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...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/2012/298407 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832547459350396928 |
|---|---|
| author | Wang Xing-run Zhang Yan-xia Wang Qi Shu Jian-min |
| author_facet | Wang Xing-run Zhang Yan-xia Wang Qi Shu Jian-min |
| author_sort | Wang Xing-run |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-b6f43d0152354e9ea0af2dcc92f588d1 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-b6f43d0152354e9ea0af2dcc92f588d12025-02-03T06:44:38ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/298407298407Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing ChromiumWang Xing-run0Zhang Yan-xia1Wang Qi2Shu Jian-min3State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaWith 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.http://dx.doi.org/10.1100/2012/298407 |
| spellingShingle | Wang Xing-run Zhang Yan-xia Wang Qi Shu Jian-min Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium The Scientific World Journal |
| title | Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium |
| title_full | Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium |
| title_fullStr | Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium |
| title_full_unstemmed | Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium |
| title_short | Effect and Removal Mechanisms of 6 Different Washing Agents for Building Wastes Containing Chromium |
| title_sort | effect and removal mechanisms of 6 different washing agents for building wastes containing chromium |
| url | http://dx.doi.org/10.1100/2012/298407 |
| work_keys_str_mv | AT wangxingrun effectandremovalmechanismsof6differentwashingagentsforbuildingwastescontainingchromium AT zhangyanxia effectandremovalmechanismsof6differentwashingagentsforbuildingwastescontainingchromium AT wangqi effectandremovalmechanismsof6differentwashingagentsforbuildingwastescontainingchromium AT shujianmin effectandremovalmechanismsof6differentwashingagentsforbuildingwastescontainingchromium |