Toxic heavy metal waste exposure and abnormal birth outcomes in an electronic waste recycling town of China

Huo, Xia; Li, Yan; Xu, Xijin; Wu, Kusheng; Jun-xiao, Liu; Chen, Shongjian; Chen, Gangjian; Huang, Jinrong

doi:10.1016/j.toxlet.2008.06.179

Cited by 6 publications

(4 citation statements)

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“…It is a rice-growing region whose industry has been dominated by e-waste recycling since the early 1990s. The air, water, soil, sediment, crops and wildlife in this area have been found to be highly contaminated with heavy metals, polybrominated diphenylethers (PBDEs) and other BFRs, as well as PCBs and other toxic compounds (Deng et al, 2006;2007;Huo et al, 2008;Sepulveda et al, 2010;Wong et al, 2007a;. Moreover, the freshwater of Guiyu city has been identified as unfit for human consumption, and much of the drinking water must be imported.…”

Section: Introductionmentioning

confidence: 99%

Heavy metal contamination of surface soil in electronic waste dismantling area: site investigation and source-apportionment analysis

2011

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The dismantling and disposal of electronic waste (e-waste) in developing countries is causing increasing concern because of its impacts on the environment and risks to human health. Heavy-metal concentrations in the surface soils of Guiyu (Guangdong Province, China) were monitored to determine the status of heavy-metal contamination on e-waste dismantling area with a more than 20 years history. Two metalloids and nine metals were selected for investigation. This paper also attempts to compare the data among a variety of e-waste dismantling areas, after reviewing a number of heavy-metal contamination-related studies in such areas in China over the past decade. In addition, source apportionment of heavy metal in the surface soil of these areas has been analysed. Both the MSW open-burning sites probably contained invaluable e-waste and abandoned sites formerly involved in informal recycling activities are the new sources of soil-based environmental pollution in Guiyu. Although printed circuit board waste is thought to be the main source of heavy-metal emissions during e-waste processing, requirement is necessary to soundly manage the plastic separated from e-waste, which mostly contains heavy metals and other toxic substances.

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Section: Introductionmentioning

confidence: 99%

Heavy metal contamination of surface soil in electronic waste dismantling area: site investigation and source-apportionment analysis

2011

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“…Heavy metals bioaccumulate in the food chain, and overexposure to them may lead to neurological degeneration, muscular dystrophy, autoimmune diseases [1], cancer, or abnormal child birth [2]. As the awareness of their toxicity rises, the need to retrieve heavy metals from contaminated sites increases.…”

Section: Introductionmentioning

confidence: 99%

Self-immobilization of Recombinant Caulobacter crescentus and Its Application in Removal of Cadmium from Water

Patel

Wilson

McKay

et al. 2010

Appl Biochem Biotechnol

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Microbial biofilms can be valuable in many biotechnological applications, including bioremediation. We have previously constructed a recombinant strain of Caulobacter crescentus JS4022/p723-6H by inserting a hexahistidine peptide to a permissive site of the host surface layer (S-layer) protein RsaA. This engineered strain is highly effective in removal of cadmium from water as free cells. In this communication, we examined the biofilms formed by self-immobilized JS4022/p723-6H and evaluated their ability to retrieve cadmium from contaminated water samples. According to light and electron microscopic observations, JS4022/p723-6H cells developed a uniform monolayer biofilm on borosilicate surfaces through their intrinsic appendage, a stalk with an adhesive holdfast. The density of the biofilms reached a maximum after 48 h of incubation and was not affected by exposure to at least 1 ppm cadmium. When 0.4 ppm Cd(II) was added to the growth medium, immobilized JS4022/p723-6H removed 76.9% of the total metal, whereas the control strain only removed 13.5%. When a water sample collected from Lake Erie was spiked with various amounts of CdCl2, immobilized JS4022/p723-6H was able to sequester 44 approximately 51% of the total metal, compared to 37 approximately 42% accumulated by the control strain. By combining two powerful techniques, cell surface display and self-immobilization, we achieved complete separation of dissolved heavy metals from contaminated water in a single step. This study laid down the foundation to cost-effectively construct large-scale bioreactors with high efficiency and specificity to retrieve environmental contaminants from water.

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“…Studies have shown a direct impact of crude and backyard recycling of e-waste on workers in Nigeria (Igharo et al, 2014;Igharo et al, 2015aIgharo et al, , 2015bIgharo et al, 2016); Ghana (Nukpezah et al, 2014;Asante et al, 2012;Caravanos et al, 2011); China (Chan et al, 2007;Zhao et al, 2008;Huo et al, 2008;Huo et al, 2007;Wang et al, 2009;Zheng et al, 2008); and India (Steiner,, 2004;Ha et al, 2009;Eguchi et al, 2012). Also, on plant (roots of onion bulbs) (Bakare et al, 2012;Bakare et al, 2013;Olafisoye et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Distribution and potential risk of metals and metalloids in soil of informal E-waste recycling sites in Lagos, Nigeria

Adeyi¹,

Olayanju²,

Fatade³

2020

Ife Journal of Science

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Toxic heavy metal waste exposure and abnormal birth outcomes in an electronic waste recycling town of China

Cited by 6 publications

References 0 publications

Heavy metal contamination of surface soil in electronic waste dismantling area: site investigation and source-apportionment analysis

Heavy metal contamination of surface soil in electronic waste dismantling area: site investigation and source-apportionment analysis

Self-immobilization of Recombinant Caulobacter crescentus and Its Application in Removal of Cadmium from Water

Distribution and potential risk of metals and metalloids in soil of informal E-waste recycling sites in Lagos, Nigeria

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