The present study provides an overview of the challenges and opportunities in processing complex gold-copper ores. The systematic literature review was conducted using Scopus database and seven-step methodological approach. The study indicates that the major challenges in processing complex gold-copper ores through the conventional cyanidation …
This systematic review fills this gap in the literature by synthesizing existing evidence and providing a holistic analysis of the impact of illegal mining on environmental sustainability in Ghana.
Example literature review #4: "Learners' Listening Comprehension Difficulties in English Language Learning: A Literature Review" (Chronological literature review about how the concept of listening skills has changed over time.) You can also check out our templates with literature review examples and sample outlines at the links below.
Evaluation of lucrative and environmentally friendly technologies to recover gold from primary and secondary spent sources was made in this study. Basic processing flow sheet. List of substituted...
The global literature review consisted of a screening, extraction, compilation, and analysis of existing and accessible literature according to predefined criteria (Table 1). A total of 116 resources were reviewed, including articles, reports from international and non-governmental organizations, guides and methodologies, toolkits, and ...
Gold is an essential metal in the economy and technologies. Most of the gold is produced from mining and cyanidation is the primary method used for gold extraction, with Au(CN)2⁻ being the product.
Thiosulfate leaching has been regarded as a promising alternative to cyanidation, but it still faces the challenge of the recovery of low content of gold from high concentrations of thiosulfate solutions. Liquid–liquid extraction is a method to address this issue but is still limited by the use of volatile and toxic organic solvents. To overcome this limitation, this work …
In scientific research, the method is an indispensable means to solve scientific problems and a critical research object. With the advancement of sciences, many scientific methods are being proposed, modified, and used in academic literature. The authors describe details of the method in the abstract and body text, and key entities in academic literature …
The ammoniacal thiosulfate leaching process for gold and silver extraction has been reviewed in terms of leaching mechanism, thermodynamics, thiosulfate stability, and gold recovery options.
This review examines current literature on the role of microorganisms in gold processing and recovery. ... no important effort has been made to specifically review the extraction of gold from ores ...
Gold extraction efficiencies ranging from 20–60% were achieved using the biogenic thiosulfate, and 27–77% with sodium thiosulfate solutions, respectively. ... The systematic literature review ...
Diethyl carbonate (DEC) was evaluated as a green, renewable alternative to methyl isobutyl ketone and dibutyl carbitol for the recovery of gold from copper-rich sources, such as anode slimes, by solvent extraction from chloride solutions. DEC is a powerful extractant at high chloride concentrations and can be used to sequester and concentrate gold from large …
We review the literature on gold as an investment. We summarize a wide variety of literature, including the papers in this special issue of International Review of Financial Analysis to which this ...
the gold processing, pre-treatment and gold purification stages is explored. The main objective here is to discuss how the gold extraction process can be more sustainable, with a view to developing more greener leaching reagents. 1. Introduction Gold is the most important precious metal in the world, with esti-
Overview of the main processes in the extraction of gold from raw materials. The aim of this paper is to present a systematic review of the mineral processing of gold ores, with …
The study sought to test the applicability of Hotelling's rule to gold extraction in South Africa. In environmental economics, Hotelling's rule has come to be a pillar of the exhaustible resources framework and in addition to this, it has presented essential insights into the consumption and extraction of non-renewable resources. According to Hotelling's Rule, the …
This paper aims to review the extraction of gold using alternatives to cyanide with focus on NESGLs. The paper starts with an overview on the non-cyanide gold lixiviants. ... Over the past three decades, considerable literature has examined the alternatives to cyanide for extracting gold from different ores/concentrates (Abbruzzese et al., 1995 ...
2.3.1 The Economic Benefits: ASM as a Poverty Fighter. As discussed by Ofosu et al. (2020), ASM as a resource extraction activity can be a springboard to poverty alleviation. This is because its considerable socio-economic benefits are not only restricted to employment generation, but also encompass the importance of revenues from resource extraction, at least …
Extraction of Precious Metal "GOLD" from Electronic Waste by Chemical Leaching Method ... Literature Review. ... This review focuses on the biological extraction techniques including an assessment ...
In this review, we outline some of the latest chemical approaches that have been reported for the recovery of gold from discarded mobile phones and other WEEE. 22,23 Gold is the most …
and highlight various metallurgical methods for the extraction of gold from waste PCBs. For this latter aspect, we focus on methods in the primary research literature for which an understanding of the chemical mode of action has been developed; as such, a detailed analysis of the patent literature is not in the scope of this review.
Therefore, there is a clear need for the development of safe and affordable gold extraction and purification technologies. Ultimately, the growth of this specific economic sector should be regulated to help protect both the environment and human health. ... Nugraha, W. Research trend on the use of mercury in gold mining: Literature review and ...
In this paper, we summarized the research progress and remaining challenges in gold extraction using these noncyanide reagents. After a brief introduction to the preparation …
Problems related to the effective processing of refractory gold ores containing carbon and arsenic are discussed. In the search for technologies for the extraction of gold from such ores, including those obtained from the Sayak-4 gold deposit, pyrometallurgical processing represents a possible direction. The results of an experimental study of the Reducing …
Over the past three decades, a significant amount of literature has examined alternative lixiviants to cyanide for recovering gold, while few industrial applications have been …
Article PDF Available Literature Review. ... Maximum extraction of gold (ca. 80%) was observed at 2.0 M HCl, a point at which the extraction of the. other metal ions ...
A review of gold extraction using noncyanide lixiviants: Fundamentals, advancements, and challenges toward alkaline sulfur-containing leaching agents ... The systematic literature review was conducted using Scopus database and seven-step … Expand. 1. Save. The comparison of gold extraction methods from the rock using thiourea and thiosulfate.
This paper aims to summarize these studies and present a systematic review of the mineral processing of gold ores, with a particular focus on alternative leaching reagents to …
a refractory ore before leaching to achieve better gold extraction. Pretreatment methods are for example chemical blanking, roasting, chlorination, bio-oxidation, pressure oxidation, chemical oxidation and ultrafine grinding (Nanthakumar et al., 2007; Celep et al., 2011). If gold ore contains pyrite, the pyrite should be oxidized before leaching.
The main objective here is to discuss how the gold extraction process can be more sustainable, with a view to developing more greener leaching reagents. ... The aim of this paper is to present a systematic review of the mineral processing of gold ores, with special focus on alternative leaching reagents to cyanide that can facilitate more ...
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