Polychlorinated Biphenyls Attenuation in Soil from E‐Waste Recycling Area under Flooded and Dryland Conditions

Chen, Chen; Yang, Kai; Yu, Chunna; Qin, Zhihui; Huang, Ronglang; Tang, Xianjin; Shen, Chaofeng; Shi, Huixiang

doi:10.1002/clen.201300610

Cited by 5 publications

(2 citation statements)

References 53 publications

(71 reference statements)

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“…The most economically developed regions, like the EU, USA, and Japan, have adopted quite strong regulations and policies for E-waste management (Sawhney et al, 2008;Ababio 2012). Also, the economically emerging countries such as India and China have induced E-waste management in their national development policies (Joseph 2007;Chen et al, 2015;Karmacharya et al, 2015).…”

Section: International Practices Of E-wastes Disposalmentioning

confidence: 99%

Urgency of Proper E-Waste Management Plan in Nepal: An Overview

Giri

Adhikari

2020

Nepal Journal of Science and Technology

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Electrical and electronic gadgets (or E-gadgets) have become indispensable components of our daily life these days. As today’s electrical and electronic devices become tomorrow’s waste, the potential hazards of these materials in an open environment are significant, as they can contaminate soil, drinking water, air and thus directly affecting human health and surrounding biota. With time, the random disposal of these wastes may lead to a disastrous situation. Although Nepal is one of the least developed countries, also in terms of electrical and electronic equipment, we are importing the high-tech E-gadgets from the developed nations and using them without a proper vision for their after-use management and their impacts on socio-economic values as well as health and environment. It has become an urgent need of the hour to address E-waste challenges taking into consideration the best suited international policies and practices.

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Section: International Practices Of E-wastes Disposalmentioning

confidence: 99%

Urgency of Proper E-Waste Management Plan in Nepal: An Overview

Giri

Adhikari

2020

Nepal Journal of Science and Technology

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“…The crude recycling technology of electronic waste (e-waste) released persistent organic pollutants and heavy metals with extreme high amount to the environment, such as PBDEs, polychlorinated biphenyls (PCBs), Cu, Pb and Zn 1-4 . Due to the increasing risk of human health and the potential threat to the ecosystem, the e-waste pollution has been paid considerable attention [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

The influence of e-waste recycling on the molecular ecological network of soil microbial communities in Pakistan and China

Jiang

Cheng

Zhang

et al. 2017

Environmental Pollution

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Primitive electronic waste (e-waste) recycling releases large amounts of organic pollutants and heavy metals into the environment. As crucial moderators of geochemical cycling processes and pollutant remediation, soil microbes may be affected by these contaminants. We collected soil samples heavily contaminated by e-waste recycling in China and Pakistan, and analyzed the indigenous microbial communities. The results of this work revealed that the microbial community composition and diversity, at both whole and core community levels, were affected significantly by polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs) and heavy metals (e.g., Cu, Zn, and Pb). The geographical distance showed limited impacts on microbial communities compared with geochemical factors. The constructed ecological network of soil microbial communities illustrated microbial co-occurrence, competition and antagonism across soils, revealing the response of microbes to soil properties and pollutants. Two of the three main modules constructed with core operational taxonomic units (OTUs) were sensitive to nutrition (total organic carbon and total nitrogen) and pollutants. Five key OTUs assigned to Acidobacteria, Proteobacteria, and Nitrospirae in ecological network were identified. This is the first study to report the effects of e-waste pollutants on soil microbial network, providing a deeper understanding of the ecological influence of crude e-waste recycling activities on soil ecological functions.

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PCBs attenuation and abundance of Dehalococcoides spp., bphC, CheA, and flic genes in typical polychlorinated biphenyl-polluted soil under floody and dry soil conditions

Hashmi

Qin

Yao

et al. 2015

Environ Sci Pollut Res

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This study investigates PCBs attenuation and the abundance of active polychlorinated-degrading Dehalococcoides spp. biphenyl dioxygenase (bphC), chemotaxis (CheA), and flagellum (flic) genes in floody and dry soil conditions polluted with polychlorinated biphenyls. The results revealed that total PCBs, high chlorinated PCBs (>4 cl), and less chlorinated PCBs (<4 cl) decreased with the passage of time in floody and dry soil conditions. The reduction of total PCBs (13.87%) and less chlorinated PCBs (15.39%) was more in dry soil than floody soil, while high chlorinated PCBs showed more reduction in floody soil (8.06%) than dry soil. Dehaloccoides spp., bphC, CheA, and flic genes indicated temporal dynamics in abundance in floody and dry soil conditions. The highest abundance was 1.6 × 10(9), 3.7 × 10(4), and 3.6 × 10(2) copies in floody and 1.6 × 10(4) copies in dry soil for Dehalococcoides spp., bphC, CheA, and flic, respectively. Multivariate statistics (RDA) revealed that Dehaloccoides spp. were positively influenced by the higher chlorinated PCBs and soil physical properties, CheA gene with floody soil, flic gene with total PCBs and less chlorinated PCBs, and bphC gene was affected with moisture contents and less chlorinated PCBs. This study provides new insight in the attenuation of PCBs and the abundance of active Dehalococcoides spp. and genes in PCBs polluted soil under floody and dry soil conditions.

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Polychlorinated Biphenyls Attenuation in Soil from E‐Waste Recycling Area under Flooded and Dryland Conditions

Cited by 5 publications

References 53 publications

Urgency of Proper E-Waste Management Plan in Nepal: An Overview

Urgency of Proper E-Waste Management Plan in Nepal: An Overview

The influence of e-waste recycling on the molecular ecological network of soil microbial communities in Pakistan and China

PCBs attenuation and abundance of Dehalococcoides spp., bphC, CheA, and flic genes in typical polychlorinated biphenyl-polluted soil under floody and dry soil conditions

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