Integrated bioleaching of copper metal from waste printed circuit board—a comprehensive review of approaches and challenges

Awasthi, Abhishek Kumar; Zeng, Xianlai; Li, Jinhui

doi:10.1007/s11356-016-7529-9

Cited by 43 publications

(15 citation statements)

References 134 publications

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“…Moreover, none of the techniques can independently fulfill process demand due to the complex nature of mineral or material to be processed. Thus, an integrated approach is being applied to recover the metal values from primary as well as secondary resources [6]. The extraction method plays a vital role during process design.…”

Section: Introductionmentioning

confidence: 99%

Bench scale microbial catalysed leaching of mobile phone PCBs with an increasing pulp density

Garg

Nagar

Ellamparuthy

et al. 2019

Heliyon

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The study reports the effect of increasing pulp density on the bio-catalyzed leaching of metals from waste mobile phone printed circuit boards. Mixed microbial consortia of iron and sulfur-oxidizing microorganisms were used for batch bioleaching at varying pulp density of 7%, 10% and 15% (w/v). The copper content in the feed material was 26.3% (w/w) and the prime focus was to recover maximum copper along with other minor metals, such as zinc, aluminum, and nickel. All the bioleaching experiments resulted with 98–99% of copper recovery together with reasonable extraction Zn, Al, and Ni. The optimum copper recovery from bioleaching experiments demonstrates the possibility of scaling up with high pulp density, which could be economical as well as eco-friendly.

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Section: Introductionmentioning

confidence: 99%

Bench scale microbial catalysed leaching of mobile phone PCBs with an increasing pulp density

Garg

Nagar

Ellamparuthy

et al. 2019

Heliyon

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“…Developments in sensing, identifying, and detecting heavy metal ions in aqueous solutions could contribute to the advanced treatment of wastewater [ 9 ]. The treatment of heavy metal ions in wastewater has been a significant challenge for environmental scientists [ 10 ]. However, because of the high toxicity of cyanide (CN) species, electroplating wastewater can be categorized into two kinds of wastewater: cyanide and non-cyanide [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater

Nguyen

Zoh

et al. 2017

Sensors

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A surface-enhanced Raman scattering (SERS) detection method for environmental copper ions (Cu2+) was developed according to the vibrational spectral change of diethyldithiocarbamate (DDTC) on gold nanoparticles (AuNPs). The ultraviolet-visible (UV-Vis) absorption spectra indicated that DDTC formed a complex with Cu2+, showing a prominent peak at ~450 nm. We found Raman spectral changes in DDTC from ~1490 cm−1 to ~1504 cm−1 on AuNPs at a high concentration of Cu2+ above 1 μM. The other ions of Zn2+, Pb2+, Ni2+, NH4+, Mn2+, Mg2+, K+, Hg2+, Fe2+, Fe3+, Cr3+, Co2+, Cd2+, and Ca2+ did not produce such spectral changes, even after they reacted with DDTC. The electroplating industrial wastewater samples were tested under the interference of highly concentrated ions of Fe3+, Ni2+, and Zn2+. The Raman spectroscopy-based quantification of Cu2+ ions was able to be achieved for the wastewater after treatment with alkaline chlorination, whereas the cyanide-containing water did not show any spectral changes, due to the complexation of the cyanide with the Cu2+ ions. A micromolar range detection limit of Cu2+ ions could be achieved by analyzing the Raman spectra of DDTC in the cyanide-removed water.

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“…Illustration of integrated approach for copper recovery and recycling of WPCBs[225]. Reproduced with permission from Awashi, A.K., Integrated bioleaching of copper metal from waste printed circuit board-a comprehensive review of approaches and challenges; published by Springer, 2016.…”

mentioning

confidence: 99%

Copper Bioleaching in China: Review and Prospect

et al. 2018

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The commercial application of copper bioleaching, an environmentally-friendly approach for low-grade and secondary mineral resources recycling, has increased worldwide since the 2000s. As the world's second-largest economic entity and the largest developing country, China has the largest demand for metal resources, significantly advancing the theory and industrial technology of copper bioleaching. This paper reviews the exploration and application of copper bioleaching in China. Two typical bioleaching applications and technological processes, bioheap leaching at the Zijinshan Copper Mine and bioheap leaching at the Dexing Copper Mine, are introduced. The considerable research completed by researchers is summarized, especially focusing on the isolation and identification of leaching bacteria, the bioleaching mechanism and interface reactions, multistage percolation behavior, bioleaching system reconstruction, the multiphysics coupled model, and enhanced copper bioleaching from waste printed circuit boards (WPCBs). Based on this investigation in China, key trends and prospects in copper bioleaching-such as efficiency improvement, environmental protection, and improved technology applications-are proposed.

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Integrated bioleaching of copper metal from waste printed circuit board—a comprehensive review of approaches and challenges

Cited by 43 publications

References 134 publications

Bench scale microbial catalysed leaching of mobile phone PCBs with an increasing pulp density

Bench scale microbial catalysed leaching of mobile phone PCBs with an increasing pulp density

Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater

Copper Bioleaching in China: Review and Prospect

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