Co-processing of sulfidic mining wastes and metal-rich post-consumer wastes by biohydrometallurgy

Guézennec, Anne-Gwénaëlle; Bru, Kathy; Jacob, Jérôme; d’Hugues, Patrick

doi:10.1016/j.mineng.2014.12.033

Cited by 30 publications

(19 citation statements)

References 27 publications

(38 reference statements)

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“…A clear opportunity to recover these kind of metals is the increasing quantity of landfilled electronic waste (e-waste), which commonly contains rare and precious metals as Au, Pt, Pd, Ag, and Rh (Pant et al, 2012). Biomining have been successfully applied to recover metals by co-processing of sulfidic mining wastes and metal-rich post-consumer e-wastes by biohydrometallurgy (Guezennec et al, 2015). However, extraction and recovery of metals from heterogeneous organic waste as domestic and industrial wastewater sludge is still a challenge and can also impact on decontamination of biological waste for subsequent direct use as valid and valuable resource (e.g., organic fertilizer or organic fuel) (Hennebel et al, 2015).…”

Section: Resource Recovery For a Circular Economymentioning

confidence: 99%

Resource Recovery from Wastewater by Biological Technologies: Opportunities, Challenges, and Prospects

et al. 2017

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Limits in resource availability are driving a change in current societal production systems, changing the focus from residues treatment, such as wastewater treatment, toward resource recovery. Biotechnological processes offer an economic and versatile way to concentrate and transform resources from waste/wastewater into valuable products, which is a prerequisite for the technological development of a cradle-to-cradle bio-based economy. This review identifies emerging technologies that enable resource recovery across the wastewater treatment cycle. As such, bioenergy in the form of biohydrogen (by photo and dark fermentation processes) and biogas (during anaerobic digestion processes) have been classic targets, whereby, direct transformation of lipidic biomass into biodiesel also gained attention. This concept is similar to previous biofuel concepts, but more sustainable, as third generation biofuels and other resources can be produced from waste biomass. The production of high value biopolymers (e.g., for bioplastics manufacturing) from organic acids, hydrogen, and methane is another option for carbon recovery. The recovery of carbon and nutrients can be achieved by organic fertilizer production, or single cell protein generation (depending on the source) which may be utilized as feed, feed additives, next generation fertilizers, or even as probiotics. Additionlly, chemical oxidation-reduction and bioelectrochemical systems can recover inorganics or synthesize organic products beyond the natural microbial metabolism. Anticipating the next generation of wastewater treatment plants driven by biological recovery technologies, this review is focused on the generation and re-synthesis of energetic resources and key resources to be recycled as raw materials in a cradle-to-cradle economy concept.

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Section: Resource Recovery For a Circular Economymentioning

confidence: 99%

Resource Recovery from Wastewater by Biological Technologies: Opportunities, Challenges, and Prospects

et al. 2017

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“…At less remote mining operations sufficiently close to areas where WEEE generation takes place, the possibility of combining low-grade ore treatment and WEEE may also be considered. A two-step batch process has achieved high bioleached copper yields from a mix of sulphidic mine waste and ground PCB which has been researched by Guezennec et al (2014). However, the processing of secondary raw materials for resource recovery is dissimilar to primary ore processing; thus, novel and integrated strategies and recycling routes are needed.…”

Section: Options For the Role Of The Emerging Technologymentioning

confidence: 99%

Does ex ante application enhance the usefulness of LCA? A case study on an emerging technology for metal recovery from e-waste

Villares

Işıldar

Giesen

et al. 2017

Int J Life Cycle Assess

102

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Purpose A large proportion of the environmental impacts of a technology is determined by decisions made at the early development stages. Therefore, effective approaches to grasp the potential environmental performance of a technology early in development are needed. This paper reflects on the usefulness of ex ante application of LCA using a case study on the appraisal of the potential environmental impacts of a lab-scale novel process for bioleaching of e-waste for metal recovery. Methods The LCA framework was applied at an early stage to the novel bioleaching process to embed it in a life cycle context, linking it to upstream and downstream flows. Then, a short-term future scaled-up scenario was defined using a proxy technology and estimated data. Environmental hotspots of this scenario were identified, and its environmental impacts were compared with those of a current industrial pyrometallurgical technique, involving an integrated smelter refinery. Results and discussion LCA displays potential environmental hotspots related to energy and material inputs for the bioleaching process and solvents for copper recovery, despite uncertainties. Comparison with an existing integrated smelter refinery technology returned an inferior environmental performance. These results could not be considered accurate given the early-stage application, yet they served as valuable preliminary information. The uncertainties also prompted further enquiry about the chosen product system boundary, the role of the emerging technology and the comparability of the technologies. Conclusions The ex ante application of life cycle assessment on an emerging technology brings a systematic rigour and discipline to an ambiguous situation at the start of technological development. Applying the LCA framework broadens the scope of the research, introducing a systems approach and long-term view. Environmental aspects and alternative perspectives on the novel technology are also brought into the research domain. The approach creates new knowledge on the novel technology's potential development, and developmental challenges are given definition at an early stage. The LCA outcomes should not be regarded as a final result but have a signalling purpose as a contribution to technological development. Though imprecise with much conjecture involved, such an approach gives a valid mock-up of a plausible future providing useful provisional insights to be built upon. Applying ex ante LCA and an exploratory scenario to an emerging technology is of great service as a developmental design tool and can be further refined in later development stages.

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“…Theoretically, the recovery of Cu ions from stock solutions can be achieved using MFCs [29,37,38]. Although, the leaching or bioleaching of Cu 2+ ions from minerals have been widely reported [13,[39][40][41]. Until now, the studies on recycling Cu from the solid wastes using MFCs have been scarcely reported [42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

“…Until now, the studies on recycling Cu from the solid wastes using MFCs have been scarcely reported [42][43][44][45]. Moreover, the water pollution and ecological destruction caused by the traditional hydrometallurgical methods have plagued the development in the mining industry [40,[46][47][48][49]. In this study, the bioleaching technique and a dual-chamber MFC were assembled to achieve the extraction and recovery of Cu from the secondary copper tailings at same time.…”

Section: Introductionmentioning

confidence: 99%

Microbial fuel cells coupled with the bioleaching technique that enhances the recovery of Cu from the secondary mine tailings in the bio‐electrochemical system

Huang

Liu

Zhang

2019

Env Prog and Sustain Energy

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Improper management of dumped tailings not only causes a potential waste of resources but also poses a direct threat to the lives of local residents. A dual‐chamber microbial fuel cell (MFC) combining with the bioleaching technique was used in the study to extract Cu from the secondary mine tailings at a fed‐batch scale. A mixed culture of acidophilic bacteria was enriched and isolated from the acidic drainage in a copper mine. The effects of the pulp densities and initial pH on both the bio‐electronic performances and the recoveries of Cu on bio‐electrochemical platform were comparatively investigated. An appropriate increase in the pulp densities and a suitable decrease in the initial pH facilitated increases in power generations and enhanced the recoveries of Cu from the tailing samples. The maximum power density of 30.54 mW/m2 was achieved in the coupling system with the coulomb efficiency of 4.52%, and the internal resistance of 166.58 Ω being synchronously obtained. Correspondingly, the highest recovery efficiency of Cu of 78.72% was got in the two‐dimensional tests under conditions including the pulp density (w/v) of 20% and the initial pH of 1.8. The electrochemical reduction and the chemical precipitation in MFCs were confirmed as two of main mechanisms in obviously influencing the recovery of Cu. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Co-processing of sulfidic mining wastes and metal-rich post-consumer wastes by biohydrometallurgy

Cited by 30 publications

References 27 publications

Resource Recovery from Wastewater by Biological Technologies: Opportunities, Challenges, and Prospects

Resource Recovery from Wastewater by Biological Technologies: Opportunities, Challenges, and Prospects

Does ex ante application enhance the usefulness of LCA? A case study on an emerging technology for metal recovery from e-waste

Microbial fuel cells coupled with the bioleaching technique that enhances the recovery of Cu from the secondary mine tailings in the bio‐electrochemical system

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