Enhanced phytoremediation potential of polychlorinated biphenyl contaminated soil from e-waste recycling area in the presence of randomly methylated-β-cyclodextrins

Shen, Chaofeng; Tang, Xianjin; Cheema, Sardar Alam; Zhang, Congkai; Khan, Muhammad İmran; Fang, Liang; Chen, Xincai; Zhu, Yanhui; Qiu, Lin; Chen, Yingxu

doi:10.1016/j.jhazmat.2009.08.064

Cited by 58 publications

(19 citation statements)

References 37 publications

(36 reference statements)

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“…The lower brominated PBDEs were associated with higher reduction rates (16.1e34.8%) than the higher brominated PBDEs (9.4e17.7%) irrespective of soil or plant species. Similarly, generally higher removal percentages of lower chlorinated PCBs than higher chlorinated congeners in soils by planting have also been observed by Shen et al (2009). Higher brominated PBDEs have higher partition coefficients and are believed to be strongly bound to the soil, particularly SOM, and are therefore less degradable by soil microorganisms (Darnerud et al, 2001;de Wit, 2002;Vonderheide et al, 2006).…”

Section: Dissipation Of Pbdes In Soilsmentioning

confidence: 82%

Plant uptake and dissipation of PBDEs in the soils of electronic waste recycling sites

Huang

Zhang

Christie

2011

Environmental Pollution

132

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Weathered PBDEs can be taken up by plants and lower brominated PBDEs are associated with higher bioavailability to plants and a higher dissipation in soils.a r t i c l e i n f o a b s t r a c tPlant uptake and dissipation of weathered PBDEs in the soils of e-waste recycling sites were investigated in a greenhouse study. Eighteen PBDE congeners (tri-through deca-) were detected in the plant tissues. The proportion of lower brominated PBDEs (mono-through hexa-) in plant roots was higher than that in the soils. A concentration gradient was observed of PBDEs in plants with the highest concentrations in the roots followed by the stems and lowest in the leaves. Reduction rates of the total PBDEs in the soils ranged from 13.3 to 21.7% after plant harvest and lower brominated PBDEs were associated with a higher tendency to dissipate than the higher brominated PBDEs. This study provides the first evidence for plant uptake of weathered PBDEs in the soils of e-waste recycling sites and planting contributes to the removal of PBDEs in e-waste contaminated soils.

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Section: Dissipation Of Pbdes In Soilsmentioning

confidence: 82%

Plant uptake and dissipation of PBDEs in the soils of electronic waste recycling sites

Huang

Zhang

Christie

2011

Environmental Pollution

132

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“…Chlorinated contaminants such as polychlorinated biphenyls (PCBs) and chlorinated benzenes (CBs) have been detected in the Yangtze River water and sediments in low concentrations (Jiang et al 2000;Wang et al 2009). PCBs are anthropogenic environmental pollutants, which originate from the recycling procedures or dumping of electronic wastes (Shen et al 2009;Liu et al 2008). CBs, especially hexachlorobenzene, had a lot of applications in industry and agriculture (Barber et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Dechlorination and organohalide-respiring bacteria dynamics in sediment samples of the Yangtze Three Gorges Reservoir

Kranzioch

Stoll

Holbach

et al. 2013

Environ Sci Pollut Res

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Several groups of bacteria such as Dehalococcoides spp., Dehalobacter spp., Desulfomonile spp., Desulfuromonas spp., or Desulfitobacterium spp. are able to dehalogenate chlorinated pollutants such as chloroethenes, chlorobenzenes, or polychlorinated biphenyls under anaerobic conditions. In order to assess the dechlorination potential in Yangtze sediment samples, the presence and activity of the reductively dechlorinating bacteria were studied in anaerobic batch tests. Eighteen sediment samples were taken in the Three Gorges Reservoir catchment area of the Yangtze River, including the tributaries Jialing River, Daning River, and Xiangxi River. Polymerase chain reaction analysis indicated the presence of dechlorinating bacteria in most samples, with varying dechlorinating microbial community compositions at different sampling locations. Subsequently, anaerobic reductive dechlorination of tetrachloroethene (PCE) was tested after the addition of electron donors. Most cultures dechlorinated PCE completely to ethene via cis-dichloroethene (cis-DCE) or trans-dichloroethene. Dehalogenating activity corresponded to increasing numbers of Dehalobacter spp., Desulfomonile spp., Desulfitobacterium spp., or Dehalococcoides spp. If no bacteria of the genus Dehalococcoides spp. were present in the sediment, reductive dechlorination stopped at cis-DCE. Our results demonstrate the presence of viable dechlorinating bacteria in Yangtze samples, indicating their relevance for pollutant turnover. Responsible editor: Robert DuranElectronic supplementary material The online version of this article

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“…Ma et al 94 -96 measured chlorinated and parent PAH compounds, PCDDs/Fs, PBDDs/Fs, and PBDEs in soils and vegetation near a WEEE recycling facility and found PBDE soil concentrations 13-21% lower after plant harvesting. The potential of several plant species to phytoremediate PCB-contaminated soils near a China WEEE recycling operation was reported by Shen et al 91 Dust samples in and adjacent to WEEE recycling operations in Southeast China were collected and found to have elevated heavy metal concentrations with respect to human health thresholds. 97 Muenhor et al 98 measured BFR concentrations in dust and air from WEEE storage facilities in Thailand and found that concentrations were much lower than those encountered at WEEE recycling operations.…”

Section: Uncontrolled Management Concernsmentioning

confidence: 77%

“…Shen et al 91 measured PCDD/F, PCB, and PAH concentrations in agricultural soil, Luo et al 92 detected PBDEs in river sediment and fish tissue, and Leung et al 93 documented PBDEs and PCDDs/Fs in soils and recycling residuals. Ma et al 94 -96 measured chlorinated and parent PAH compounds, PCDDs/Fs, PBDDs/Fs, and PBDEs in soils and vegetation near a WEEE recycling facility and found PBDE soil concentrations 13-21% lower after plant harvesting.…”

Section: Uncontrolled Management Concernsmentioning

confidence: 99%

Environmental Issues and Management Strategies for Waste Electronic and Electrical Equipment

Townsend

2011

Journal of the Air & Waste Management Association

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Issues surrounding the impact and management of discarded or waste electronic and electrical equipment (WEEE) have received increasing attention in recent years. This attention stems from the growing quantity and diversity of electronic and electrical equipment (EEE) used by modern society, the increasingly rapid turnover of EEE with the accompanying burden on the waste stream, and the occurrence of toxic chemicals in many EEE components that can pose a risk to human and environmental health if improperly managed. In addition, public awareness of the WEEE or "e-waste" dilemma has grown in light of popular press features on events such as the transition to digital television and the exportation of WEEE from the United States and other developed countries to Africa, China, and India, where WEEE has often not been managed in a safe manner (e.g., processed with proper safety precautions, disposed of in a sanitary landfill, combusted with proper air quality procedures). This paper critically reviews current published information on the subject of WEEE. The definition, magnitude, and characteristics of this waste stream are summarized, including a detailed review of the chemicals of concern associated with different components and how this has changed and continues to evolve over time. Current and evolving management practices are described (e.g., reuse, recycling, incineration, landfilling). This review discusses the role of regulation and policies developed by governments, institutions, and product manufacturers and how these initiatives are shaping current and future management practices.

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Enhanced phytoremediation potential of polychlorinated biphenyl contaminated soil from e-waste recycling area in the presence of randomly methylated-β-cyclodextrins

Cited by 58 publications

References 37 publications

Plant uptake and dissipation of PBDEs in the soils of electronic waste recycling sites

Plant uptake and dissipation of PBDEs in the soils of electronic waste recycling sites

Dechlorination and organohalide-respiring bacteria dynamics in sediment samples of the Yangtze Three Gorges Reservoir

Environmental Issues and Management Strategies for Waste Electronic and Electrical Equipment

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