干旱区生态环境知识资源中心(Arid): Natural fluorapatite dissolution kinetics and Mn2+ and Cr3+ metal removal from sulfate fluids at 35 degrees C

Arid

DOI	10.1016/j.jhazmat.2020.122150
	Natural fluorapatite dissolution kinetics and Mn2+ and Cr3+ metal removal from sulfate fluids at 35 degrees C
	Vandeginste, Veerle 1,2; Cowan, Charlotte 1; Gomes, Rachel L.3; Hassan, Tharwat 1; Titman, Jeremy 1
通讯作者	Vandeginste, Veerle
来源期刊	JOURNAL OF HAZARDOUS MATERIALS
ISSN	0304-3894
EISSN	1873-3336
出版年	2020
卷号	389
英文摘要	In light of the consequences of global warming and population growth, access to safe drinking water becomes an ever greater challenge, in particular in low to middle income countries in arid regions. Moreover, mining which may cause acid mine drainage and heavy metal contamination puts further pressure on management of limited water resources. Hence, the development of cost effective water treatment methods is critical. Here, using batch reactor experiments we investigate the kinetics and mechanisms behind divalent Mn and trivalent Cr removal from sulfate fluids using natural fluorapatite at 35 degrees C. The results show that the fluorapatite dissolution rate depends on fluid pH, and that dissolution is the dominant mechanism in fluids with pH below 4. Apatite can thus serve as remediation to neutralize acidic fluids. Fluid pH of 4-6 triggers a dissolution-precipitation mechanism, in some cases following upon a dissolution-only period, with the formation of a metal phosphate. In these experiments, Cr removal is two to ten times faster than Mn removal given similar solution pH. The results demonstrate that natural apatite represents a promising, cost effective material for use in passive remediation of mining-induced contamination of soils and groundwater in arid regions.
英文关键词	Apatite Heavy metals Dissolution and precipitation Removal efficiency Acid mine drainage Arid
类型	Article
语种	英语
国家	England
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000524479100123
WOS关键词	CENTRAL EASTERN DESERT ; LEAD IMMOBILIZATION ; APATITE II(TM) ; GROUNDWATER QUALITY ; AQUEOUS-SOLUTIONS ; DRINKING-WATER ; GOLD DEPOSIT ; CALCIUM ; HYDROXYAPATITE ; SORPTION
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS研究方向	Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314975
作者单位	1.Univ Nottingham, Sch Chem, Univ Pk, Nottingham NG7 2RD, England; 2.Univ Nottingham, GeoEnergy Res Ctr, Univ Pk, Nottingham NG7 2RD, England; 3.Univ Nottingham, Fac Engn, Dept Chem & Environm Engn, Univ Pk, Nottingham NG7 2RD, England
推荐引用方式 GB/T 7714	Vandeginste, Veerle,Cowan, Charlotte,Gomes, Rachel L.,et al. Natural fluorapatite dissolution kinetics and Mn2+ and Cr3+ metal removal from sulfate fluids at 35 degrees C[J],2020,389.
APA	Vandeginste, Veerle,Cowan, Charlotte,Gomes, Rachel L.,Hassan, Tharwat,&Titman, Jeremy.(2020).Natural fluorapatite dissolution kinetics and Mn2+ and Cr3+ metal removal from sulfate fluids at 35 degrees C.JOURNAL OF HAZARDOUS MATERIALS,389.
MLA	Vandeginste, Veerle,et al."Natural fluorapatite dissolution kinetics and Mn2+ and Cr3+ metal removal from sulfate fluids at 35 degrees C".JOURNAL OF HAZARDOUS MATERIALS 389(2020).