☆ 4.5 Article

Sensitivity of Gold Lixiviants for Metal Impurities in Leaching of RAM Printed Circuit Boards

METALS (2023)

Related references

Note: Only part of the references are listed.

Article Chemistry, Multidisciplinary

Optimizing the Leaching Parameters and Studying the Kinetics of Copper Recovery from Waste Printed Circuit Boards

Juanjuan Hao et al.

Summary: The study focuses on the importance of copper recovery from waste printed circuit boards (WPCBs) using a sulfuric acid-hydrogen peroxide system. The optimization of leaching parameters and understanding of copper leaching kinetics are crucial for achieving high copper recovery. This study utilizes statistical and mathematical techniques to optimize process parameters and clarify the leaching kinetics. The results provide valuable insights for the investigation of metal recoveries from WPCBs.

ACS OMEGA (2022)

Add to Collection

Article Green & Sustainable Science & Technology

Gold recovery from waste printed circuit boards of mobile phones by using microwave pyrolysis and hydrometallurgical methods

Yu-Fong Huang et al.

Summary: The study successfully recovered gold from waste printed circuit boards through processes such as microwave pyrolysis, acid leaching, solvent extraction, and oxidative precipitation. Efficient leaching of copper was achieved using a lixiviant composed of sulfuric acid and hydrogen peroxide, while gold leaching was efficient using thiourea, thiosulfate, and aqua regia. Organic solvents were ineffective in extracting gold ions from the leachate, thus oxidative precipitation process was applied. Gold precipitation efficiency was high using hydrogen peroxide or perchloric acid as oxidants. Microwave pyrolysis prevented gold loss, and perchloric acid exhibited higher selectivity for gold recovery.

SUSTAINABLE ENVIRONMENT RESEARCH (2022)

Add to Collection

Article Engineering, Chemical

Recovery of Rare-Earth Elements from Printed Circuit Boards by Vacuum Pyrolysis and Multiple Electrostatic Separation

Andjelka Popovic et al.

Summary: This study investigated the influence of multi-stage electrostatic separation (ESS) on the distribution of metal elements (MEs), elements contained in refractory oxides (EROs), bromine (Br), and rare-earth elements (REEs) in waste electronic material. The selected ESS fraction was also subjected to pyrolysis. The results showed that MEs were mainly distributed in the conductive fraction, while Br, EROs, and REEs were distributed in the nonconductive fraction. Pyrolysis significantly increased the concentration of MEs, EROs, and REEs in the raw materials.

PROCESSES (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Effective Recovery Process of Copper from Waste Printed Circuit Boards Utilizing Recycling of Leachate

Joona Rajahalme et al.

Summary: An optimized leaching and electrowinning process was proposed for the recovery of copper from waste printed circuit boards, with complete leaching of copper achieved under specific conditions. Study showed high copper recovery and product purity through recirculation of leachate with reduced acid consumption.

JOM (2021)

Add to Collection

Article Chemistry, Physical

Effect of Acid Leaching Pre-Treatment on Gold Extraction from Printed Circuit Boards of Spent Mobile Phones

Nicolo Maria Ippolito et al.

Summary: The study explored the effectiveness of a preliminary acid leaching process for recovering gold from spent mobile phone printed circuit boards. Two hydrometallurgical routes were tested to recover copper first to prevent competition with gold in the subsequent thiourea leaching. The recovery rates of copper and gold varied depending on the route and operational parameters.

MATERIALS (2021)

Add to Collection

Review Metallurgy & Metallurgical Engineering

Review of gold leaching in thiosulfate-based solutions

Feng Xie et al.

Summary: Thiosulfate is considered the most promising alternative to cyanide for gold leaching, with characteristics such as non-toxicity, low cost, and high leaching rate. Challenges and problems still exist in this system despite extensive research, leading to studies using nickel, cobalt, and iron-based catalysts to reduce thiosulfate consumption.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA (2021)

Add to Collection

Article Engineering, Environmental

Electronic waste generation, recycling and resource recovery: Technological perspectives and trends

Eldon R. Rene et al.

Summary: E-waste poses a serious threat to the environment and human health, requiring enhanced regulation and management. Countries vary in their approaches to the generation, handling, and regulation of e-waste. New recycling methods and research suggest promising applications for extracting valuable resources from e-waste using biocatalysts.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Add to Collection

Article Green & Sustainable Science & Technology

Technoeconomic Assessment of Organic Halide Based Gold Recovery from Waste Electronic and Electrical Equipment

Jamie Wordsworth et al.

Summary: Waste Electronic and Electrical Equipment (WEEE) is a rapidly growing waste stream globally, containing valuable precious metals. This paper evaluates four organic halides as leaching agents for gold recovery from WEEE, showing NBS as the superior solution with high extraction efficiency. Expanding the use of NBS, NCS, and TCICA could potentially be profitable and viable on a larger scale.

RESOURCES-BASEL (2021)

Add to Collection

Article Chemistry, Multidisciplinary

Recycling of gold from waste electronic components of devices

Rekha Panda et al.

KOREAN JOURNAL OF CHEMICAL ENGINEERING (2020)

Add to Collection

Article Engineering, Environmental

Environmental impact of high-value gold scrap recycling

Benjamin Fritz et al.

INTERNATIONAL JOURNAL OF LIFE CYCLE ASSESSMENT (2020)

Add to Collection

Article Materials Science, Multidisciplinary

Hydrochloric Acid Leaching Behaviors of Copper and Antimony in Speiss Obtained from Top Submerged Lance Furnace

Sujin Chae et al.

METALS (2020)

Add to Collection

Review Chemistry, Multidisciplinary

Challenges and opportunities in the recovery of gold from electronic waste

Mudila Dhanunjaya Rao et al.

RSC ADVANCES (2020)

Add to Collection

Review Chemistry, Multidisciplinary

Recovery of gold in iodine-iodide system - a review

C. J. Liang et al.

SEPARATION SCIENCE AND TECHNOLOGY (2019)

Add to Collection

Article Materials Science, Multidisciplinary

Hydrometallurgical Approach for Leaching of Metals from Copper Rich Side Stream Originating from Base Metal Production

Udit Surya Mohanty et al.

METALS (2018)

Add to Collection

Article Green & Sustainable Science & Technology

Comparative Analysis About Degradation Mechanisms of Printed Circuit Boards (PCBs) in Slow and Fast Pyrolysis: The Influence of Heating Speed

Fabian Diaz et al.

JOURNAL OF SUSTAINABLE METALLURGY (2018)

Add to Collection

Article Engineering, Environmental

An investigation of trends in precious metal and copper content of RAM modules in WEEE: Implications for long term recycling potential

Rhys Gareth Charles et al.

WASTE MANAGEMENT (2017)

Add to Collection

Article Metallurgy & Metallurgical Engineering

Heap leaching as a key technology for recovery of values from low-grade ores - A brief overview

Jochen Petersen

HYDROMETALLURGY (2016)

Add to Collection

Article Engineering, Multidisciplinary

Leaching and Adsorption of Gold from Waste Printed Circuit Boards Using Iodine-Iodide Solution and Activated Carbon

Batnasan Altansukh et al.

ENGINEERING JOURNAL-THAILAND (2016)

Add to Collection

Article Metallurgy & Metallurgical Engineering

Thermodynamic and kinetic of iodine-iodide leaching in gold hydrometallurgy

S. S. Konyratbekova et al.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA (2015)

Add to Collection

Review Engineering, Environmental

Precious metal recovery from waste printed circuit boards using cyanide and non-cyanide lixiviants - A review

Ata Akcil et al.

WASTE MANAGEMENT (2015)

Add to Collection

Review Metallurgy & Metallurgical Engineering

Recovery of gold from secondary sources-A review

S. Syed

HYDROMETALLURGY (2012)

Add to Collection

Article Engineering, Environmental

Thiourea leaching gold and silver from the printed circuit boards of waste mobile phones

Li Jing-ying et al.

WASTE MANAGEMENT (2012)

Add to Collection

Article Engineering, Environmental

Thiosulfate leaching of gold from waste mobile phones

Vinh Hung Ha et al.

JOURNAL OF HAZARDOUS MATERIALS (2010)

Add to Collection

Review Engineering, Environmental

Metallurgical recovery of metals from electronic waste: A review

Jirang Cui et al.

JOURNAL OF HAZARDOUS MATERIALS (2008)

Add to Collection

Article Metallurgy & Metallurgical Engineering

Reaction kinetics of gold dissolution in acid thiourea solution using ferric sulfate as oxidant

Jinshan Li et al.

HYDROMETALLURGY (2007)

Add to Collection

Review Engineering, Chemical

Research status and prospect of gold leaching in alkaline thiourea solution

Su Zheng et al.

MINERALS ENGINEERING (2006)

Add to Collection

Review Metallurgy & Metallurgical Engineering

A review of gold leaching in acid thiourea solutions

Jinshan Li et al.

MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW (2006)

Add to Collection

Article Materials Science, Multidisciplinary

The process mineralogy of gold: The classification of ore types

JP Vaughan

JOM (2004)

Add to Collection

Article Engineering, Chemical

Copper catalysed oxidation of thiosulfate by oxygen in gold leach golutions

PL Breuer et al.

MINERALS ENGINEERING (2003)

Add to Collection

Review Engineering, Chemical

Thiosulfate leaching of gold - A review

MG Aylmore et al.

MINERALS ENGINEERING (2001)

Add to Collection

© Peeref 2019-2024. All rights reserved.