干旱区生态环境知识资源中心(Arid): Reducing mine water use in arid areas through the use of a byproduct road dust suppressant

Arid

DOI	10.1016/j.jclepro.2019.05.088
	Reducing mine water use in arid areas through the use of a byproduct road dust suppressant
	Gonzalez, Alvaro 1; Aitken, Douglas 2; Heitzer, Christian 3; Lopez, Carlos 1; Gonzalez, Marcelo 1
通讯作者	Gonzalez, Alvaro
来源期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
EISSN	1879-1786
出版年	2019
卷号	230 页码:46-54
英文摘要	Water scarcity is a critical global-scale social risk. Several factors are affecting the availability of fresh water, like global population growth and the increase of industrial activities. Particularly in the mining industry, water is a critical resource for mineral production and road maintenance. Haul roads in surface mining operations are traditionally treated with large amounts of water to reduce dust emissions caused by large trucks that generate up to 97% of mine dust that reduces safety and mining productivity. An alternative to reduce dust in mining roads is the use of Magnesium Chloride Hexahydrate (6H(2)O center dot MgCl2), which is a byproduct of the local lithium. So far, there is no scientific evidence that combines laboratory and field research to assess the effectiveness of an industrial byproduct used as a dust control for mining haul roads. This paper reports a quantitative analysis of the effectiveness of 6H(2)O center dot MgCl2 in reducing operational water based on a laboratory and field study. Laboratory results show an important water retention effect in 6H(2)O center dot MgCl2 treated soils compared to untreated soils. In addition, results showed that soils exposed to higher air relative humidity increases the water absorption from the air, confirming the hygroscopic property of 6H(2)O center dot MgCl2. Field results collected for a year in a copper mine located in an arid area of Chile showed that water consumption in haul roads treated with water only is on average 153 times higher than water consumption in roads treated with 6H(2)O center dot MgCl2 brine. In other words, 6H(2)O center dot MgCl2 brine treatment allows approximately 99% of water saving. The dust monitoring system using a laser device demonstrated that, on average, dust emissions are 3.4 times higher in roads treated with water only than in roads treated with 6H(2)O center dot MgCl2 brine. Overall, the study concludes that using 6H(2)O center dot MgCl2 brine effectively reduces water consumption used for dust suppression in haul roads, demonstrating that the use of 6H(2)O center dot MgCl2 byproduct is a very promising material for addressing water management issues in the mining industry. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Roads Water Mining Dust Byproduct
类型	Article
语种	英语
国家	Chile ; Australia ; Venezuela
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000474676300006
WOS关键词	ENVIRONMENTAL FOOTPRINT ; PERFORMANCE
WOS类目	Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216867
作者单位	1.Pontificia Univ Catolica Chile, Sch Engn, Santiago, Chile; 2.Univ Queensland, Int Ctr Excellence, Sustainable Minerals Inst, Brisbane, Qld, Australia; 3.Univ Santa Maria, Dept Civil Engn, Caracas, Venezuela
推荐引用方式 GB/T 7714	Gonzalez, Alvaro,Aitken, Douglas,Heitzer, Christian,et al. Reducing mine water use in arid areas through the use of a byproduct road dust suppressant[J],2019,230:46-54.
APA	Gonzalez, Alvaro,Aitken, Douglas,Heitzer, Christian,Lopez, Carlos,&Gonzalez, Marcelo.(2019).Reducing mine water use in arid areas through the use of a byproduct road dust suppressant.JOURNAL OF CLEANER PRODUCTION,230,46-54.
MLA	Gonzalez, Alvaro,et al."Reducing mine water use in arid areas through the use of a byproduct road dust suppressant".JOURNAL OF CLEANER PRODUCTION 230(2019):46-54.