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High-temperature reduction of chromium(VI) in solid alkali
Alternative TitleJ. Hazard. Mater.
Wang, TG; Li, ZH
2004-08-09
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume112Issue:1-2Pages:63-69
AbstractChromium (VI) that exists in many industrial wastes is considered highly toxic. One of the most common ways to dispose of these wastes is to reduce chromium (VI) to chromium (III), which is less toxic and can be relatively easily removed or fixed. However, the reduction of chromium (VI) is often conducted in acidic solutions and the chromium (VI) in alkaline solid wastes is hardly to be fully removed. The present study describes a new method for reducing chromium (VI) in alkaline solid. By mixing alkaline solids containing chromium (VI) with an aqueous sucrose solution and then calcinating the resulting mixture at 400-600 degreesC in inertial gas, chromium (VI) can be easily reduced to an insoluble chromium oxide. The reduced fraction can reach up to 99% in 10-20 min under the conditions of temperature above 600 degreesC and sucrose/chromium (VI) greater than or equal to 1 g/1 g. (C) 2004 Elsevier B.V. All rights reserved.; Chromium (VI) that exists in many industrial wastes is considered highly toxic. One of the most common ways to dispose of these wastes is to reduce chromium (VI) to chromium (III), which is less toxic and can be relatively easily removed or fixed. However, the reduction of chromium (VI) is often conducted in acidic solutions and the chromium (VI) in alkaline solid wastes is hardly to be fully removed. The present study describes a new method for reducing chromium (VI) in alkaline solid. By mixing alkaline solids containing chromium (VI) with an aqueous sucrose solution and then calcinating the resulting mixture at 400-600 degreesC in inertial gas, chromium (VI) can be easily reduced to an insoluble chromium oxide. The reduced fraction can reach up to 99% in 10-20 min under the conditions of temperature above 600 degreesC and sucrose/chromium (VI) greater than or equal to 1 g/1 g. (C) 2004 Elsevier B.V. All rights reserved.
KeywordHexavalent Chromium Reduction Removal Alkaline Solid Calcination
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1016/j.jhazmat.2004.03.022
URL查看原文
Indexed BySCI
Language英语
WOS KeywordHYDROGEN-SULFIDE ; SOLUBLE CHROMATE ; WOOD ASH ; KINETICS ; IRON(II)
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Engineering, Civil ; Environmental Sciences
WOS IDWOS:000222722500006
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/4942
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wang, TG,Li, ZH. High-temperature reduction of chromium(VI) in solid alkali[J]. JOURNAL OF HAZARDOUS MATERIALS,2004,112(1-2):63-69.
APA Wang, TG,&Li, ZH.(2004).High-temperature reduction of chromium(VI) in solid alkali.JOURNAL OF HAZARDOUS MATERIALS,112(1-2),63-69.
MLA Wang, TG,et al."High-temperature reduction of chromium(VI) in solid alkali".JOURNAL OF HAZARDOUS MATERIALS 112.1-2(2004):63-69.
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