Results 21 to 30 of about 211,656 (309)
Resources, 2021 Waste Electronic and Electrical Equipment (WEEE) is one of the fastest growing waste streams worldwide, with significant economic value due to the precious metals contained within.
Jamie Wordsworth +4 more
doaj +1 more source
Synthesis of MnO2 nanowires adsorbent for gold recovery from electroplating wastewater using Taguchi method [PDF]
شیمی کاربردی روز, 2016 In this study, MnO2 nanowire adsorbent was synthesized by low cost preparation method that was capable of extracting gold form diluted jewellery waste water solutions. Diïerent adsorption parameters like number of treatment, hold time, pH and agitation
مبینا علیمحمدی +1 more
doaj +1 more source
Sensitivity of Gold Lixiviants for Metal Impurities in Leaching of RAM Printed Circuit Boards
Metals, 2023 The importance of gold recovery from waste printed circuit boards is continuously increasing due to raising gold prices and demand as well as the need for innovative and flexible recycling methods for this complex waste stream.
Alexander Birich +3 more
doaj +1 more source
Experimental Study on Efficient Recovery of High-Grade Sulfide Ore [PDF]
E3S Web of Conferences, 2023 A gold mine is a typical broken zone altered rock type gold deposit, with some high grade primary sulfide ore at 20~30m from the surface, and the ore grade is about 5g/t.
Li Guangsheng +4 more
doaj +1 more source
EcoMat, 2022 The ever‐growing depletion of precious metals in modern electronic industry necessitates unremitting exploitation of novel materials for gold recovery from e‐waste.
Huaimeng Li +5 more
doaj +1 more source
Valorisation of Mining Waste for Gold Recovery
Inżynieria Mineralna, 2018 Purpose: the metals and industrial minerals contained in the tailings produced by mining and quarrying activities, are cause of environmental damage. The objective of this experimental work is the application of innovative technologies for the treatment and exploitation of mining tailings in Romania, in order to recover materials high grade raw to be ...
Ubaldini Stefano +3 more
openaire +6 more sources
Metals, 2018 High content of gold in near-surface oxide zones above the gold ore deposit could be recovered using cyanidation. However, restricting the use of cyanide in mines has made it difficult to recover gold within the oxide zone. In this study, we investigated
Bong-Ju Kim +5 more
doaj +1 more source
Metals, 2018 Cyanide tailings are the hazardous waste discharged after gold cyanidation leaching. The recovery of gold and iron from cyanide tailings was investigated with a combined direct reduction roasting and leaching process. The effects of reduction temperature,
Pingfeng Fu +3 more
doaj +1 more source
Recovery of Gold from Pregnant Thiosulfate Solutions by the Resin Adsorption Technique
Metals, 2017 This review is devoted to an integrated evaluation of the current use and future development of the resin adsorption technique in gold recovery from pregnant thiosulfate solutions.
Zhonglin Dong +4 more
doaj +1 more source
Efficient gold recovery by microbial electrochemical technologies
Bioelectrochemistry, 2023 The applicability of microbial electrochemical technologies for the recovery of gold was investigated. Two-chamber microbial fuel cells (MFC) with bioanodes buried in sediment were used in two operating modes. The cathodes (gold foil or graphitized paper), submerged in HAuCl4, solutions, were short-circuited with the bioanodes, and thus for the first ...
Yolina, Hubenova +3 more
openaire +2 more sources