Recycling of (critical) metals

Hagelüken, Christian

doi:10.1002/9781118755341.ch3

Cited by 42 publications

(71 citation statements)

References 12 publications

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“…The initial amount of gold present in the ESM is 0.24 ± 0.04 mg/g of ESM. Gold content in this ESM from printed circuit board scrap was higher than those reported by Ilyas et al , Liang et al and Xiang et al 343536 and was comparable with ESM reported by Hageluken37.…”

Section: Methodssupporting

confidence: 88%

Enhancing gold recovery from electronic waste via lixiviant metabolic engineering in Chromobacterium violaceum

Tay

Natarajan

Rahim

et al. 2013

Sci Rep

109

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Conventional leaching (extraction) methods for gold recovery from electronic waste involve the use of strong acids and pose considerable threat to the environment. The alternative use of bioleaching microbes for gold recovery is non-pollutive and relies on the secretion of a lixiviant or (bio)chemical such as cyanide for extraction of gold from electronic waste. However, widespread industrial use of bioleaching microbes has been constrained by the limited cyanogenic capabilities of lixiviant-producing microorganisms such as Chromobacterium violaceum. Here we show the construction of a metabolically-engineered strain of Chromobacterium violaceum that produces more (70%) cyanide lixiviant and recovers more than twice as much gold from electronic waste compared to wild-type bacteria. Comparative proteome analyses suggested the possibility of further enhancement in cyanogenesis through subsequent metabolic engineering. Our results demonstrated the utility of lixiviant metabolic engineering in the construction of enhanced bioleaching microbes for the bioleaching of precious metals from electronic waste.

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Section: Methodssupporting

confidence: 88%

Enhancing gold recovery from electronic waste via lixiviant metabolic engineering in Chromobacterium violaceum

Tay

Natarajan

Rahim

et al. 2013

Sci Rep

109

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“…Furthermore, when considering implications for CRMs, only a few publications can be found (Buchert et al. ; Hagelüken ). Studies rather focus on recycling of other materials (Geyer and Jackson ; Miemczyk et al.…”

Section: Factors For Implementation Of Closed‐loop Supply Chain For Cmentioning

confidence: 99%

“…). Complexity of material mixes often implies a necessity to set priorities for recovery of certain materials over others (Hagelüken ; UNEP ).…”

Section: Factors For Implementation Of Closed‐loop Supply Chain For Cmentioning

confidence: 99%

“…; Morley and Eatherley ). Recycling allows to reduce the need for mined (primary) materials (Hagelüken ; UNEP ) and negative environmental consequences of their extraction and processing (Graedel et al. ; Geyer et al.…”

Section: Introductionmentioning

confidence: 99%

“…Hagelüken () points out that material and product perspectives on a recycling system differ considerably in terms of priorities and scope of factors considered. Therefore, the current product perspective is not sufficient for examination of CLSC for CRM.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

In Pursuit of Closed‐Loop Supply Chains for Critical Materials: An Exploratory Study in the Green Energy Sector

Lapko

Trianni

Nuur

et al. 2018

J of Industrial Ecology

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SummaryA closed-loop supply chain (CLSC) is considered not only an important solution for ensuring sustainable exploitation of materials, but also a promising strategy for securing long-term availability of materials. The latter is especially highlighted in the materials criticality discourse. Critical raw materials (CRMs), being exposed to supply disruptions, create an uncertain operational environment for many industries, particularly for green energy technologies that employ multiple CRMs. However, recycling rates of CRMs are very low and engagement of companies in CLSC for CRM is limited. This study examines factors influencing CLSC for CRM development in photovoltaic panels and wind turbine technologies. The aim is to analyze how the factors manifest themselves in different companies along the supply chain and to identify enabling and bottleneck conditions for implementation of CLSC for CRM. The novelty of the study is twofold: the focus on material rather than product flows, and examination of factors from a multiactor perspective. The evidence obtained suggests that the manufacturing companies and reverse supply-chain operators engaged in the study take different perspectives (product vs. material) regarding development of CLSC for CRM and thus emphasize different factors. The findings underline the need for interactions between supply-chain actors, a sound competitive environment for recycling processes, and investment in technologies and infrastructure development if CLSC for CRM is to be developed. The paper provides implications for practitioners and policy makers for implementation of CLSC for CRM, and suggests prospects for further research.

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Recycling and Sustainable Utilization of Precious and Specialty Metals

Izatt

Hagelüken

2016

Metal Sustainability

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Recycling of (critical) metals

Cited by 42 publications

References 12 publications

Enhancing gold recovery from electronic waste via lixiviant metabolic engineering in Chromobacterium violaceum

Enhancing gold recovery from electronic waste via lixiviant metabolic engineering in Chromobacterium violaceum

In Pursuit of Closed‐Loop Supply Chains for Critical Materials: An Exploratory Study in the Green Energy Sector

Recycling and Sustainable Utilization of Precious and Specialty Metals

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