A sequential integration approach using Aspergillus Niger to intensify coal fly ash as a rare metal pool

doi:10.1016/j.fuel.2020.117460

	A sequential integration approach using Aspergillus Niger to intensify coal fly ash as a rare metal pool
	Su, HaiFeng 3,4; Chen, Hua 2; Lin, Jiafu 1
刊名	FUEL
	2020-06-15
卷号	270 页码:10
关键词	Coal fly ash Rare metals Aspergillus Niger Hydrothermal alkali treatment Bioleaching
ISSN号	0016-2361
DOI	10.1016/j.fuel.2020.117460
通讯作者	Lin, Jiafu(linjiafu@cdu.edu.cn)
英文摘要	As the primary solid waste product from coal-fired power plants, a large amount of coal fly ash (CFA) has caused serious environmental pollution to cultivated land, groundwater, and regional air. Meanwhile, CFA contains certain amounts of rare metals, making it a potential rare metal pool (RMP). Reducing CFA stock can alleviate its pollution to environment through an effective recycling approach. However, the extraction of rare metals from CFA, a pool of rare metals, has not received enough attention until now. Here, we present a sequential integration approach (SIA) of hydrothermal alkali treatment (HAT) and bioleaching to enhance recovery rate of rare metals from CFA. The results showed that the leaching rates of Ti, Ga, Sr, Zr, and Ba were significantly increased using one-step extraction method, reaching 89.20%, 32.00%, 54.30%, 74.50%, and 35.40%, respectively. The results demonstrated that HAT combined with bioleaching can improve the recovery rate of some rare metals from CFA. This study sheds new light on the valuable development of CFA as RMP with potential to mitigate the environment pollution.
资助项目	State Key Laboratory of Petroleum Pollution Control, the CNPC Research Institute of Safety and Environmental Technology[PPC2017004] ; National Natural Science Foundation ; frontier research program of Chongqing, Chongqing Science Committee[cstc2017jcyjA02138] ; Key laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Natural and Resources[SXDJ2019]
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000520029100004
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/11139]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Lin, Jiafu
作者单位	1.Chengdu Univ, Antibiot Res & Reevaluat Key Lab Sichuan Prov, Chengdu, Peoples R China 2.Zunyi Inst Forestry Sci, Zunyi 563002, Guizhou, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Water Environm, 266 Fangzheng Ave,Shuitu High Tech Pk, Chongqing 400714, Peoples R China 4.Chengdu Univ, Inst Adv Study, Chengdu, Peoples R China
推荐引用方式 GB/T 7714	Su, HaiFeng,Chen, Hua,Lin, Jiafu. A sequential integration approach using Aspergillus Niger to intensify coal fly ash as a rare metal pool[J]. FUEL,2020,270:10.
APA	Su, HaiFeng,Chen, Hua,&Lin, Jiafu.(2020).A sequential integration approach using Aspergillus Niger to intensify coal fly ash as a rare metal pool.FUEL,270,10.
MLA	Su, HaiFeng,et al."A sequential integration approach using Aspergillus Niger to intensify coal fly ash as a rare metal pool".FUEL 270(2020):10.