Selective Recovery of Gallium (Indium) from Metal Organic Chemical Vapor Deposition Dust-A Sustainable Process

doi:10.1021/acssuschemeng.9b01228

	Selective Recovery of Gallium (Indium) from Metal Organic Chemical Vapor Deposition Dust-A Sustainable Process
	Fang, S; Tao, TY; Cao, HB; Zheng, XH; Hu, YY; Zhang, Y; Sun, Z; Fang, Sheng; Tao, Tianyi; Cao, Hongbin
刊名	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
	2019
卷号	7 期号:10 页码:9646
关键词	Ga-bearing dust LITHIUM-ION BATTERY Metal recycling ELECTRONIC WASTE Selective leaching CATHODE SCRAP Precipitation LED INDUSTRY POWER DEVICE RED MUD ZINC GAN EXTRACTION SEPARATION
ISSN号	2168-0485
DOI	10.1021/acssuschemeng.9b01228
文献子类	Article
英文摘要	Gallium (indium)-containing dust as a hazardous waste generated from light-emitting diode (LED) epitaxial wafer manufacturing attracts worldwide attention because of both resources and environmental importance. Oxidative roasting combined with acidic leaching is frequently utilized to recover the corresponding metals from such dust, while the recovery rate is usually low because of the rather inert physicochemical properties of gallium compounds. Simultaneously, the selectivity of leaching is low, which results in complex separation or purification is required in order to obtain the required product (e.g., metallic gallium, Ga(OH)(3)). In this research, it is demonstrated that the selectivity of leaching can be achieved via properly controlling the physicochemical properties of the leaching solution and the leaching conditions. The leaching rate of gallium can reach 90.01% through optimizing the effects of different parameters, including leaching reagent concentration, solid-to-liquid ratio, reaction temperature, reaction time, and rotation rate, which is about 16% higher than the conventional method. Moreover, the corresponding leaching mechanisms and kinetics were also evaluated, and the apparent activation energy of the reaction is determined as 24.33 kJ/mol. Without further purification, 99.8% of gallium and 99.1% of indium can be further recovered as Ga(OH)(3) and In(OH)(3) from the leaching solutions, respectively. In the whole process, the effective recycling rates of gallium and indium are 89.83% and 92.42%, respectively. This study provides bases for developing an effective recycling process of such waste with high recovery rate, advanced selectivity, and low environmental impacts.
WOS记录号	WOS:000469304900063
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/28193]
专题	中国科学院过程工程研究所
推荐引用方式 GB/T 7714	Fang, S,Tao, TY,Cao, HB,et al. Selective Recovery of Gallium (Indium) from Metal Organic Chemical Vapor Deposition Dust-A Sustainable Process[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2019,7(10):9646, 9654.
APA	Fang, S.,Tao, TY.,Cao, HB.,Zheng, XH.,Hu, YY.,...&Sun, Zhi.(2019).Selective Recovery of Gallium (Indium) from Metal Organic Chemical Vapor Deposition Dust-A Sustainable Process.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,7(10),9646.
MLA	Fang, S,et al."Selective Recovery of Gallium (Indium) from Metal Organic Chemical Vapor Deposition Dust-A Sustainable Process".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 7.10(2019):9646.