PCDD/Fs and PBDD/Fs in sediments from the river encompassing Guiyu, a typical e-waste recycling zone of China

Li, Mingyang; Li, Huiru; Chen, Pei; Song, Aimin; Peng, Ping’an; Hu, Jianfang; Sheng, Guoying; Ying, Guang‐Guo

doi:10.1016/j.ecoenv.2022.113730

Cited by 10 publications

(2 citation statements)

References 57 publications

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“…A study in Guiyu, Guangdong Province, China, concluded that these wastes were causing contamination of freshwater sources and sediments with heavy metals mainly due to acid-leaching processes (Wong et al 2007). Contamination of air and soils with polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs), polychlorinated dibenzo-p-dioxins (PCDD) and polycyclic aromatic hydrocarbons (PAHs) mainly caused by open burning sites (Tue et al 2013;Liu et al 2022). Human health impacts, such as high lead blood…”

Section: Exportation Of E-waste In the Built Environmentmentioning

confidence: 99%

Management of e-Waste in the South African Construction Industry – A Literature Review

Nkosi,

Adedeji,

Jele

et al. 2023

Proceedings of the International Conference on Industrial Engineering and Operations Management

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In complacence with the ever-growing industrialization of different sectors, more specifically the construction sector, electrical and electronic waste management is becoming a global challenge in the construction industry posing significant environmental and health challenges. E-waste, if managed effectively, will release significant economic, resource and ecological benefits. Most of the construction companies have no information about electronic waste management, electronic devices that come from the seller while damaged are sent back to the supplier for exchange. Electronics that could not be repaired are sold to scrap yards and some are sent directly into the dumpsite, however, there were some electronic wastes stored inside the premises and others stored at the back of the premises directly into the ground, which decomposes and possibly affect the environment. The construction companies feel that it is the government's responsibility to provide money for electronic waste management otherwise there is no way they could manage e-waste in their business because it will not be profitable or else the users must take care of their electronic waste. The secondary data was collected through a detailed review of extant literature. In contrast, the primary data was collected using a qualitative method through interviewing the construction professionals. Twelve industry professionals were invited to participate in an interview but ten were present and able to participate, representing an 83% response rate. This paper seeks to assess how electrical and electronic waste are managed in the South African construction industry.

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Section: Exportation Of E-waste In the Built Environmentmentioning

confidence: 99%

Management of e-Waste in the South African Construction Industry – A Literature Review

Nkosi,

Adedeji,

Jele

et al. 2023

Proceedings of the International Conference on Industrial Engineering and Operations Management

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“…Polychlorinated dibenzo- p -dioxins and dibenzofurans (PCDD/Fs) are one of the most significant persistent organic pollutants, having irreversible teratogenic toxicity, high persistence, long-range transport properties, and biological accumulativity, which make them a global environmental and health concern. , Exposure to PCDD/Fs is linked to adverse health effects, including developmental and reproductive issues and different forms of cancer, immune system damage, and nervous system disorders . Much previous literature has extensively explored PCDD/Fs during the recycling process or open burning process of EW disposal, with the total international toxic equivalent quantity (I-TEQ) exceeding the U.S. EPA limit. − Characterization of PCDD/Fs , generated during EW disposition has been well noted, as well as the interplay mechanism of metal and PCDD/Fs (e.g., electron transfer). , The incomplete combustion process of EW catalyzes PCDD/Fs through low-temperature heterogeneous synthesis (200–400 °C), while abundant Cu (catalytic metal) and Cl content in WPCB enhance the reaction. − Centralized closed co-incineration of municipal solid waste (MSW) and EW could minimize the PCDD/F emission generated by high-temperature gaseous synthesis, with high furnace temperature (>1000 °C) and comprehensive exhaust gas cleaning facilities. , As little research concerning EW co-incineration (EWC) has been conducted, the fundamental and modifiable influence of industrial-scale co-incineration on PCDD/Fs and fly ash (FA) toxicity remains uncertain.…”

Section: Introductionmentioning

confidence: 99%

Inventory of PCDD/Fs and Fly Ash Characteristics during the e-Waste and Municipal Solid Waste Co-Incineration Process

et al. 2023

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In the face of a challenging situation for yearly e-waste (EW) increment and disposition, EW co-incineration (EWC) with municipal solid waste (MSW) is a promising solution whose emission characteristics remain unclear. This study is conducted in a 400 tons/day MSW incineration (MSWI) plant to characterize polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and fly ash (FA) properties. Analytical methods include high-resolution gas chromatography/high-resolution mass spectrometry (HRGC/HRMS) for PCDD/ F determination, as well as X-ray diffraction (XRD), X-ray fluorescence (XRF), ion chromatography (IC), and leaching toxicity test for FA. The results indicate that toxic PCDD/F amounts are doubled by EWC in both primary exhaust gas (EG) and FA with international toxic equivalent quantity (I-TEQ) concentrations of 19.00 ± 6.32 ng I-TEQ/Nm 3 and 1.33 ± 0.56 ng I-TEQ/g. After the clean-up of the air pollution control system (APCS), emitted PCDD/Fs in solid and gas phases, as well as major air pollutants (CO, NO x , SO 2 , HCl, and particulate matter), are permissive within the limit values of national standards GB 18485-2014 and GB 16889-2008. Distribution patterns for 136 PCDD/F isomers are analogous in both MSWI and EWC conditions. De novo synthesis is always the major formation route for both EWC and MSWI conditions, while dibenzodioxin/dibenzofuran (DD/ DF) chlorination also contributes. The generation of 136 PCDD/Fs is enhanced by EWC, and the correlation coefficients of Cl and Cu in the fuel with the generation of 136 PCDD/F isomers are found to be R = 0.92 and 0.88, respectively. The main components in FA from MSWI and EWC differ less, both containing CaO, SiO 2 , and Al 2 O 3 . However, Cl and Cu contents, as well as leaching toxicity in FA are elevated by EW. Heavy metals, except for Cd, Ni, and Pb, meet the requirement of the standard.

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PCDD/Fs in indoor environments of residential communities around a municipal solid waste incineration plant in East China: Occurrence, sources, and cancer risks

Wang

Liu

et al. 2023

Environment International

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PCDD/Fs and PBDD/Fs in sediments from the river encompassing Guiyu, a typical e-waste recycling zone of China

Cited by 10 publications

References 57 publications

Management of e-Waste in the South African Construction Industry – A Literature Review

Management of e-Waste in the South African Construction Industry – A Literature Review

Inventory of PCDD/Fs and Fly Ash Characteristics during the e-Waste and Municipal Solid Waste Co-Incineration Process

PCDD/Fs in indoor environments of residential communities around a municipal solid waste incineration plant in East China: Occurrence, sources, and cancer risks

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