Slurry electrolysis of ocean polymetallic nodule

Wang, Chengyan; Qiu, Dingfan; Yin, Fang; Wang, Han-yuan; Chen, Yongqiang

doi:10.1016/s1003-6326(10)60013-1

Cited by 33 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SE describes the electrolysis of WPCB powder circulated in a conductive electrolyte solution. , Electrochemical oxidation and reduction occur simultaneously on the anode and cathode surfaces, respectively. When the WPCB powder comes in contact with the anode, the metallic components will be oxidized to metal ions (eq ), which migrate via the electrolyte and can be deposited on the cathode electrochemically (eq ).…”

Section: Existing Metallurgical Leaching Methodologiesmentioning

confidence: 99%

Teaching Electrometallurgical Recycling of Metals from Waste Printed Circuit Boards via Slurry Electrolysis Using Benign Chemicals

et al. 2022

View full text Add to dashboard Cite

The rapid growth of personal electronics has promoted a surge of e-waste worldwide. Among the e-waste stream, waste printed circuit boards (WPCBs) contain a lot of recyclable valuable metals that can incentivize the recycling operation when recovered. This pedagogical exercise demonstrates a simple electrocatalytic metal recovery strategy that works at room temperature and atmospheric pressure. Students can complete the exercise within 1.5–2 h and get to learn about electrocatalytic reactions and their parameters. The reaction can be powered by a couple of 1.5 V AA batteries and an electrolyte chemically similar to automobile antifreeze. Using quotidian objects can help students connect their laboratory learning with their daily lives. In addition to teaching electrochemistry concepts, we hope this exercise can raise awareness of the substantial increase of e-waste in recent years.

show abstract

Section: Existing Metallurgical Leaching Methodologiesmentioning

confidence: 99%

Teaching Electrometallurgical Recycling of Metals from Waste Printed Circuit Boards via Slurry Electrolysis Using Benign Chemicals

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The product is then extracted and electrolyzed. 68 Kumari et al 66,69 have developed a laboratory-scale electro-biological leaching procedure to extract valuable metals from manganese nodules in the Indian Ocean. In the electrochemical bioleaching process combining bioleaching and electrochemical leaching, manganese dioxide can be reduced out by cathodic polarization and current interactions.…”

Section: The Inevitability Of Bioleachingmentioning

confidence: 99%

“…With direct current or cathodic reduction potential, the ferromanganese oxide from ocean manganese nodules is reduced, 66,67 allowing bound copper, nickel, cobalt, and other valuable metals to effortlessly enter the solution. The product is then extracted and electrolyzed 68 . Kumari et al 66,69 have developed a laboratory‐scale electro‐biological leaching procedure to extract valuable metals from manganese nodules in the Indian Ocean.…”

Section: The Inevitability Of Bioleachingmentioning

confidence: 99%

Bioleaching of oceanic manganese nodules: Current progress and future prospects

Xue

Feng

et al. 2023

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

The extraction of manganese elements and other strategic elements from oceanic manganese nodules has become a strategic decision to ensure the security of global metal resources and the high‐quality green development of metal resource processing and metallurgy industry due to the gradual depletion of high‐quality terrestrial metal resources and the increase of difficult‐to‐select and difficult‐to‐smelt deposits. In order to achieve the enrichment and separation of diverse elements within oceanic manganese nodules, it is imperative to initiate chemical reactions that facilitate the breakdown of complex oxides, particularly manganese dioxide. Bioleaching is a viable treatment option for oceanic manganese nodules with low operating costs and environmental damage. However, the mechanism of oceanic manganese nodules bioleaching is not fully studied, and the prospect of technology development is uncertain. We have reviewed five influencing factors on bioleaching of oceanic manganese nodules: mineralogical characteristics, chemical reaction equilibrium, thermodynamic characteristics, microbial properties, and operational variables. It then makes new development recommendations and technological system suggestions for the future improvement of oceanic manganese nodule bioleaching, primarily focusing on the development of new technologies for challenging to select and difficult to smelt ores, the practicality of strategic energy metal development, the cell design and its materials revolution, environmental protection and management, and all‐round resource utilization. Solving the above critical technical issues will boost the high‐quality development of metal industry and environmental protection.

show abstract

“…The common impurity in pregnant leach solutions (PLS), posing a huge problem in metallurgical circuits, is iron. Its extraction is typically between 30% and 90%, sometimes ending in complete dissolution [56,60,72,94]. It is especially frequent when Fe salts are introduced as reducing agents or in bioleaching methods.…”

Section: Downstream Processingmentioning

confidence: 99%

Recent Advancements in Metallurgical Processing of Marine Minerals

2021

View full text Add to dashboard Cite

Polymetallic manganese nodules (PMN), cobalt-rich manganese crusts (CRC) and seafloor massive sulfides (SMS) have been identified as important resources of economically valuable metals and critical raw materials. The currently proposed mineral processing operations are based on metallurgical approaches applied for land resources. Thus far, significant endeavors have been carried out to describe the extraction of metals from PMN; however, to the best of the authors’ knowledge, it lacks a thorough review on recent developments in processing of CRC and SMS. This paper begins with an overview of each marine mineral. It is followed by a systematic review of common methods used for extraction of metals from marine mineral deposits. In this review, we update the information published so far in peer-reviewed and technical literature, and briefly provide the future perspectives for processing of marine mineral deposits.

show abstract

Slurry electrolysis of ocean polymetallic nodule

Cited by 33 publications

References 4 publications

Teaching Electrometallurgical Recycling of Metals from Waste Printed Circuit Boards via Slurry Electrolysis Using Benign Chemicals

Teaching Electrometallurgical Recycling of Metals from Waste Printed Circuit Boards via Slurry Electrolysis Using Benign Chemicals

Bioleaching of oceanic manganese nodules: Current progress and future prospects

Recent Advancements in Metallurgical Processing of Marine Minerals

Contact Info

Product

Resources

About