A comprehensive review of urban mining and the value recovery from e-waste materials

Xavier, Lúcia Helena; Ottoni, Marianna; Abreu, Leonardo Picanço Peixoto

doi:10.1016/j.resconrec.2022.106840

Cited by 53 publications

(22 citation statements)

References 91 publications

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“…The relationship between population and the amount of e-waste is found in a group of studies. (Xavier et al 2023). The amount of e-waste has a direct relationship with the population, which is supported by a value of 0.3897.…”

Section: Discussionmentioning

confidence: 89%

“…They found that developed countries generate the most e-waste per capita, but in absolute terms, developing countries generate the most e-waste due to their larger populations. Xavier et al (2023) finds a strong correlation between e-waste volumes in 2014-2016 and population. A strong correlation was also found for developed countries.…”

Section: E-waste and Populationmentioning

confidence: 92%

“…(Kush and Hills 2017) For Brazil, Chile and Uruguay, a strong correlation between GDP and PPP GDP and e-waste generation was also found. (Xavier et al 2023) Overall, while there is reason to believe that there is a positive relationship between GDP at PPP and e-waste generation, the exact nature of this relationship may be complex and depend on a number of other factors.…”

Section: Dependence Of E-waste Generation On Gdp In Pppmentioning

confidence: 99%

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Group correlation analysis of socio-economic indicators and the volume of collected e-waste in European countries

Datsyuk,

Mikhaylov,

Pinter

2023

Environ. Res. Commun.

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There has been a significant growth in e-waste worldwide and in European countries the growth rate of e-waste entering the market is higher than the growth rate of recycled waste. This is confirmed by comparing the CAGR figures of 6.85% and 5.7% respectively. The study confirms a strong negative correlation between CO2 per capita and e-waste volume in European countries such as Norway, Finland, France, Germany, Sweden and Austria. A linear equation shows that a 1 p.p. increase in CO2 means a reduction of 4,267 kg of e-waste collected per inhabitant. In other European countries, a direct correlation was found between e-waste volume and GDP. Thus, waste collected per capita and GDP have the correlation coefficient is 0.97. The third group of countries includes Bulgaria, the Czech Republic and Poland, where there was a negative correlation between e-waste collected per capita and population. Overall, the study highlights the complex relationships between different factors and e-waste management, and underlines the need for sustainable solutions to address the growing problem of e-waste

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Section: Discussionmentioning

confidence: 89%

Section: E-waste and Populationmentioning

confidence: 92%

Section: Dependence Of E-waste Generation On Gdp In Pppmentioning

confidence: 99%

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Group correlation analysis of socio-economic indicators and the volume of collected e-waste in European countries

Datsyuk,

Mikhaylov,

Pinter

2023

Environ. Res. Commun.

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“…These e-wastes do have some precious metals like gold, silver, platinum, copper, aluminum, and rare earth metals and these elements can be reused. Furthermore, new commercial benefits from them can also be explored as opportunities (Garlapati 2016 ; Dias et al 2018 ; Dhir et al 2021 ; Xavier et al 2023 ).…”

Section: Management Strategies For the E-wastesmentioning

confidence: 99%

Concepts of circular economy for sustainable management of electronic wastes: challenges and management options

Srivastav

Markandeya

Patel

et al. 2023

Environ Sci Pollut Res

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The electronic and electrical industrial sector is exponentially growing throughout the globe, and sometimes, these wastes are being disposed of and discarded with a faster rate in comparison to the past era due to technology advancements. As the application of electronic devices is increasing due to the digitalization of the world (IT sector, medical, domestic, etc.), a heap of discarded e-waste is also being generated. Per-capita e-waste generation is very high in developed countries as compared to developing countries. Expansion of the global population and advancement of technologies are mainly responsible to increase the e-waste volume in our surroundings. E-waste is responsible for environmental threats as it may contain dangerous and toxic substances like metals which may have harmful effects on the biodiversity and environment. Furthermore, the life span and types of e-waste determine their harmful effects on nature, and unscientific practices of their disposal may elevate the level of threats as observed in most developing countries like India, Nigeria, Pakistan, and China. In the present review paper, many possible approaches have been discussed for effective e-waste management, such as recycling, recovery of precious metals, adopting the concepts of circular economy, formulating relevant policies, and use of advance computational techniques. On the other hand, it may also provide potential secondary resources valuable/critical materials whose primary sources are at significant supply risk. Furthermore, the use of machine learning approaches can also be useful in the monitoring and treatment/processing of e-wastes. Highlights In 2019, ~ 53.6 million tons of e-wastes generated worldwide. Discarded e-wastes may be hazardous in nature due to presence of heavy metal compositions. Precious metals like gold, silver, and copper can also be procured from e-wastes. Advance tools like artificial intelligence/machine learning can be useful in the management of e-wastes. Graphical abstract

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“…With the development of technology, strong demands for the quick renewal of the properties of electronic products every so often have resulted in electronic waste (e-waste) that has become one of the fastest growing domestic waste streams in the global urban environment worldwide. − According to the United Nations’ Global E-waste Monitor 2020, 53.6 million metric tons (Mt) of electronic waste was generated worldwide in 2019, and this figure will reach 74 Mt by 2030 . The toxic additives or hazardous substances in electronic components such as heavy metals and halogenated organic pollutants can damage the human brain and/or the coordination system, causing environmental and human health risks. , Therefore, the effective disposal of e-waste has become an urgent issue for the human society.…”

Section: Introductionmentioning

confidence: 99%

Rapid and Selective Gold Stripping from Electronic Waste with Yolk–Shell-Structured Ion-Imprinted Magnetic Mesoporous Nanorobots for Efficient Water Decontamination

Pan

Liu

Luo

et al. 2023

ACS Sustainable Chem. Eng.

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Green, efficient and sustainable treatment of secondary resources such as electronic waste (e-waste) has significant strategic, economic and environmental value for the future social development, but it remains a serious task. Here, an intelligent yolk–shell-structured ion-imprinted magnetic mesoporous nanorobot (MMNR-IIP-YS) was assessed for rapid and selective gold stripping from leaching solutions from e-waste leachates and employed for water decontamination by targeting organic contaminants. MMNR-IIP-YS exhibited a competitive adsorption capacity (65.01 mg g–1) which was 2.69 times that of the non-imprinted polymer (24.16 mg g–1) at 298 K and possesses superior adsorption rate, excellent selectivity, long-term stability, and recycling ability. Interestingly, a closed-loop miniplant was established for sustainable treatment of e-waste, revealing that MMNR-IIP-YS was capable of extracting 98.51% of gold from actual waste leachates and showing efficient and stable degradation efficiency of toxic organics and dyes. These findings have the potential for application in industrial-scale treatment of e-waste and suggest an appealing strategy based on self-propelled nanorobots for future development of sustainable waste utilization systems.

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A comprehensive review of urban mining and the value recovery from e-waste materials

Cited by 53 publications

References 91 publications

Group correlation analysis of socio-economic indicators and the volume of collected e-waste in European countries

Group correlation analysis of socio-economic indicators and the volume of collected e-waste in European countries

Concepts of circular economy for sustainable management of electronic wastes: challenges and management options

Rapid and Selective Gold Stripping from Electronic Waste with Yolk–Shell-Structured Ion-Imprinted Magnetic Mesoporous Nanorobots for Efficient Water Decontamination

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