Dioxin sources to the aquatic environment: Re-assessing dioxins in industrial processes and possible emissions to the aquatic

Kawamoto, Katsuya; Weber, Roland

doi:10.1016/j.emcon.2021.01.002

Cited by 7 publications

(4 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As for the oxygen-containing byproducts, no oxygen-containing compounds participate in the main reaction, but other processes such as water/alkaline washing could introduce oxygen to the system and cause oxygen-containing byproducts (including PCDD/Fs) and acyl-containing compounds (such as chloroacryloyls and chloroacetic anhydride) to form (Figure b,c and Table S1). It has been reported that rinsing and exhaust gas cleaning facilities in chlorobenzene and chloroethylene manufacturing processes could form PCDD/Fs and cause PCDD/F pollution in wastewater . Though the wastewater was not analyzed in this research, detection of oxygen-containing byproducts in the organic phase samples suggested the occurrence of oxygen-participated sub-reactions and existence of PCDD/Fs in wastewater.…”

Section: Resultsmentioning

confidence: 83%

“…It has been reported that rinsing and exhaust gas cleaning facilities in chlorobenzene and chloroethylene manufacturing processes could form PCDD/Fs and cause PCDD/F pollution in wastewater. 39 Though the wastewater was not analyzed in this research, detection of oxygen-containing byproducts in the organic phase samples suggested the occurrence of oxygenparticipated sub-reactions and existence of PCDD/Fs in wastewater. Attention should therefore be paid to control PCDD/F formation during the removal of HCl by water/ alkaline washing.…”

Section: Identifying Pcdd/f Formation Mechanisms Bymentioning

confidence: 82%

See 1 more Smart Citation

Formation and Inventory of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans and Other Byproducts along Manufacturing Processes of Chlorobenzene and Chloroethylene

Liu

Wang

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

Chlorinated organic chemicals are produced and used extensively worldwide, and their risks to the biology and environment are of increasing concern. However, chlorinated byproducts [e.g., polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs)] formed during the commercial manufacturing processes and present in organochlorine products are rarely reported. The knowledge on the occurrences and fate of unintentional persistent organic chemicals in the manufacturing of organochlorine chemical is necessary for accurate assessment of the risks of commercial chemicals and their production. Here, PCDD/Fs were tracked throughout chlorobenzene and chloroethylene production processes (from raw materials to final products) by target analysis. Other byproducts that can further transform into PCDD/Fs were also identified by performing non-target screening. As a result, the PCDD/F concentrations were mostly the highest in bottom residues, and the octachlorinated congeners were dominant. Alkali/water washing stages may cause the formation of oxygen-containing byproducts including PCDD/Fs and acyl-containing compounds, so more attention should be paid to these stages. PCDD/Fs were of 0.17 and 0.21–1.2 ng/mL in monochlorobenzene and chloroethylene products, respectively. Annual PCDD/F emissions (17 g toxic equivalent in 2018) during chlorobenzene and chloroethylene production were estimated using PCDD/F emission factors. The results can contribute to the improvement of PCDD/F inventories for the analyzed commercial chemicals.

show abstract

Section: Resultsmentioning

confidence: 83%

Section: Identifying Pcdd/f Formation Mechanisms Bymentioning

confidence: 82%

Formation and Inventory of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans and Other Byproducts along Manufacturing Processes of Chlorobenzene and Chloroethylene

Liu

Wang

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Dioxins released from the factory into the aquatic environment not only pollute the water source, but also accumulate in aquatic organisms. The content of dioxins in aquatic organisms such as fish is much higher than that in water ( Kawamoto and Weber, 2021 ), which indicates the existence of biological accumulation in this process. For instance, dioxins have been found in the sediment - snail - Chinese mitten crab and sediment - Chinese mitten crab food chain.…”

Section: Introductionmentioning

confidence: 99%

A review of food contaminant 2,3,7,8-tetrachlorodibenzo-p-dioxin and its toxicity associated with metabolic disorders

Gao,

Xu,

Zhong

et al. 2023

Current Research in Food Science

View full text Add to dashboard Cite

“…Fig. 2 shows the industrial-scale process of caprolactam production [14] . This process consists of the following 4 stages: 1.…”

Section: Introductionmentioning

confidence: 99%

Development and validation of a prototype for the on-line simultaneous analysis of quality caprolactam synthesized on an industrial scale

2023

View full text Add to dashboard Cite

Dioxin sources to the aquatic environment: Re-assessing dioxins in industrial processes and possible emissions to the aquatic

Cited by 7 publications

References 31 publications

Formation and Inventory of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans and Other Byproducts along Manufacturing Processes of Chlorobenzene and Chloroethylene

Formation and Inventory of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans and Other Byproducts along Manufacturing Processes of Chlorobenzene and Chloroethylene

A review of food contaminant 2,3,7,8-tetrachlorodibenzo-p-dioxin and its toxicity associated with metabolic disorders

Development and validation of a prototype for the on-line simultaneous analysis of quality caprolactam synthesized on an industrial scale

Contact Info

Product

Resources

About