Leaching capacity of metals–metalloids and recovery of valuable materials from waste LCDs

Savvilotidou, Vasiliki; Hahladakis, John Ν.; Gidarakos, Evangelos

doi:10.1016/j.wasman.2015.05.025

Cited by 69 publications

(33 citation statements)

References 38 publications

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“…Screens are one of the most important parts of mobile phones that contains glass, organic materials and indium which is present in a layer is called indium-tin oxide (ITO). The important point is 70% of indium consumption related to ITO production [4]. Indium is a rare metals and present in small amount (0.24) ppm in the crust of earth and it is obtained as by-product of zinc mining about 1-100ppm [5] The amount of indium in mobile phone screens can be up to 250 ppm.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Indium from Mobile Phone Touch Screen Using Adapted Acidithiobacillus ferrooxidans

Rezaei¹,

Mousavi²,

Pourhossein³

2018

IJBBB

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Abstract:The toxicity of heavy metals has important role in thermophilic microorganism growth in bioleaching of e-waste. The mobile phone touch screen has high concentration of several heavy metals that caused negative effect on bacterial activity and metals recovery. In the present investigation, Acidithiobacillus ferrooxidans was adapted to powder of mobile phone touch screen. The serial subculturing approach was used for bacterial adaptation with heavy metals. The experiments began with 0.1 wt/vol.% pulp density eventually increase to 2.5 wt/vol.%. All experiment conducted in 100 ml 9k medium at the initial pH 2 and 2% (v/v) inoculums. The effective parameters such as pH, Eh, Fe 3+ , cell concentration were studied and the results confirmed as well as each other. Indium recovery for adapted cell, non-adapted cell and control were 100% (adapted) , 10% (non-adapted) , 1% (control) , respectively. Finally, it is essential that the bacteria become adapted with the heavy metals and consequently an acceptable bioleaching process will be achieved.

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Section: Introductionmentioning

confidence: 99%

Recovery of Indium from Mobile Phone Touch Screen Using Adapted Acidithiobacillus ferrooxidans

Rezaei¹,

Mousavi²,

Pourhossein³

2018

IJBBB

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“…Various researchers have reported indium recovery from ITO, mainly via the hydrometallurgical process [22][23][24][25], from several waste resources, for example ITO scrap [24][25][26] and LCD etching waste [27,28]. To hydrometallurgically recover indium from any source, leaching is the first step, as has been reported by several researchers [4,17,29,30]. Zhang et al [2] recently reviewed the research on the recycling of indium from waste LCDs, which clearly indicates hydrometallurgy is the preferred process followed by dismantling and pretreatment.…”

Section: Introductionmentioning

confidence: 93%

Value Recovery from Waste Liquid Crystal Display Glass Cullet through Leaching: Understanding the Correlation between Indium Leaching Behavior and Cullet Piece Size

Swain

Lee

Hong

2018

Metals

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For hydrometallurgical recovery of indium from glass cullet after dismantling a waste liquid crystal display (LCD), leaching is the rudimentary stage. Though size reduction of the cullet pieces adds convenience for recycling, from an efficiency and cost-effectiveness perspective regarding leaching process development, determining the proper cullet piece size is essential. Hence, in this study, leaching efficiency of indium as a function of cullet piece size was investigated, wherein the proper mechanical classification of crushed glass cullet could be addressed. The optimum conditions of 5 M mineral acid as the lixiviant, pulp density of 500 g/L, temperature of 75 • C, agitation speed of 500 rpm, 2 h process time were kept constant for the leaching studies. It was concluded that the size of the waste LCD cullet inversely affected the leaching efficiency of indium. For efficient leaching, a smaller cullet size is recommended; hence, waste LCD should be crushed to pieces 1 mm or smaller. Indium leaching behavior comparison using HCl, HNO 3 , H 2 SO 4 revealed that all three mineral acids had similar leaching efficiencies. The reported process provides the missing link between physical dismantling and chemical processing for indium recovery via techno-economical-sustainable process development.

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“…In is present as indium (III) oxide (In 2 O 3 ), which contributes to 90% (by weight) of in ITO (remaining 10% is made of tin (IV) oxide). Typical spent LCD panels on an average contain 530 mgÁkg À1 of In, 346 mgÁkg À1 of As and 24 mgÁkg À1 of Sb (Savvilotidou, Hahladakis, & Gidarakos, 2015).…”

Section: Spent Lcdsmentioning

confidence: 99%

“…Indium leaching from LCD. Several studies on the effect of mineral acids on the leaching of Indium from LCDs have been published (Li, Liu, Li, Liu, and Zeng, 2011;Dodbiba, Nagai, Wang, Okaya, & Fujita, 2012;Silveira, Fuchs, Pinheiro, Tanabe, & Bertuol, 2015;Savvilotidou, Hahladakis, & Gidarakos, 2015) (Table 3). Yang, Kubota, Baba, Kamiya, and Goto (2013) studied the effect of individual mineral acids (such as HCl, HNO 3 and H 2 SO 4 ) on the leaching of Indium from LCD panel glass.…”

Section: Leaching Of Critical Elements From Weeementioning

confidence: 99%

Recent advances on hydrometallurgical recovery of critical and precious elements from end of life electronic wastes - a review

Sethurajan

Hullebusch

Fontana

et al. 2019

Critical Reviews in Environmental Science and Technology

277

104

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Waste electrical and electronic equipment (WEEE) contains economically significant levels of precious, critical metals and rare earth elements, apart from base metals and other toxic compounds. Recycling and recovery of critical elements from WEEEs using a cost-effective technology are now one of the top priorities in metallurgy due to the rapid depletion of their natural resources. More than 150 publications on WEEE management, leaching and recovery of metals from WEEE were reviewed in this work, with special emphasize on the recent research (2015-2018). This paper summarizes the recent progress regarding various hydrometallurgical processes for the leaching of critical elements from WEEEs. Various methodologies and techniques for critical elements selective recovery (using ionic liquids, solvent extraction, electrowinning, adsorption, and precipitation) from the WEEEs leachates are discussed. Future prospects regarding the use of WEEEs as secondary resources for critical raw materials and its technoeconomical and commercial beneficiaries are discussed.

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Leaching capacity of metals–metalloids and recovery of valuable materials from waste LCDs

Cited by 69 publications

References 38 publications

Recovery of Indium from Mobile Phone Touch Screen Using Adapted Acidithiobacillus ferrooxidans

Recovery of Indium from Mobile Phone Touch Screen Using Adapted Acidithiobacillus ferrooxidans

Value Recovery from Waste Liquid Crystal Display Glass Cullet through Leaching: Understanding the Correlation between Indium Leaching Behavior and Cullet Piece Size

Recent advances on hydrometallurgical recovery of critical and precious elements from end of life electronic wastes - a review

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