Atmospheric Deposition of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in Two Cities of Southern China

Zhu, Jinning; Xing, Jin; Tang, Haiyan; Lee, Wen-Jhy; Yan, Ping; Cui, Kangping; Huang, Qianli

doi:10.4209/aaqr.2017.05.0177

Cited by 14 publications

(4 citation statements)

References 46 publications

(68 reference statements)

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“…Dry deposition is one of the main ways for air pollutants to enter the ecosystem (Mi et al, 2012). The dry deposition of PCDD/Fs is the sum of deposition in the gas phase and particle phase (Zhu et al, 2017). Ambient air temperature, wind direction, particle size and other factors also affect the atmospheric deposition process (Wu et al, 2009;Chi et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis for Dry Deposition and PM2.5-bound Content of PCDD/Fs in the Ambient Air

Cui

Sheu

et al. 2021

Aerosol Air Qual. Res.

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Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis for Dry Deposition and PM2.5-bound Content of PCDD/Fs in the Ambient Air

Cui

Sheu

et al. 2021

Aerosol Air Qual. Res.

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“…Physically dioxin has a small density of 1.8 g/cm 3 while NO2 gas is 1.45 g/cm 3 and SO2 is 2.63x10 -3 g/cm 3 but dioxin can be classified in non-gas particles. Dioxin is chemically classified as inactive (non-decay) and undergoes dry deposition (particles that fall to the ground) at a speed of about 0.2-0.5 cm/s in Greece (Olie et al, 1977), 0.27-0.28 (coastal), 0.19-0.24 (mountain), 0.148-0.162 (industrial estate), 0.49-0.98 (urban) in Taiwan (Chandra et al, 2015, Lee et al, 2016, Zhu et al, 2017. For dioxins in the atmosphere, dry deposition is more dominant than wet deposition (Wu et al, 2009, Huang et al, 2011, Chandra et al, 2015, Lee et al, 2016.…”

Section: The Concept Of Atmospheric Dispersion Of Dioxinmentioning

confidence: 99%

Environmental Assessment of Atmospheric Dioxin Dispersion from a Municipal Wastes Power Plant, Indonesia

Sulaiman

Dewanti

2021

JPSL

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We assess of environemental effect of the dioxin dispersion from municipal waste power plant (MWPP) covering, characteristic of the dispersion and health risk affected communities in Indonesia. The dispersion studies through modeling which is done with the following steps 1 ) estimate dioxin emissions from incinerator processing, 2 ) design the dioxin dispersion by literature review, 3 ) calculate health risk of communities based on the dispersion modeling. The results show that the dispersion of dioxin is represented in the form of a non-Gaussian solution of the advection-diffusion equation with taking into account the settling and deposition velocity. In the case of MWPP with capacity, 80 tonnes per day produce a concentration of 0.04 pg TEQ/Nm3 in residential areas which are located 200m from chimney. Inhalation exposure resulting is 5.28 pg 1-TEQ/( kg-day ) to adults and 6.95 pg 1-TEQ/( kg-day ) to children. The strategy took to adjust by WHO environmental quality standard 4 pg 1-TEQ /( kg-day ), we increase the reduction of APC 25%. The calculation of emissions based on combustion processes shows that the dioxin concentration of MWPP is still below the threshold required by WHO.

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“…To avoid future contamination risks, such fly ash cannot be dumped directly into the landfill without proper treatment (McKay, 2002;Yang et al, 2007). Various studies have shown high concentration of such chlorinated compounds released into the environment from industrial activities and vehicular emissions (Tang et al, 2017;Xing et al, 2017;Zhu et al, 2017;Lee et al, 2018;Zhao et al, 2018). Mechanical treatment (MC), as an effective PCDD/F and PCB destruction technique has been employed to control emissions of persistent organic pollutants (Cheruiyot et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Mechanical Treatment of MSWI Fly Ash: A Way Forward to Inhibit PCB Reformation

Mubeen

Lin

Chen

et al. 2019

Aerosol Air Qual. Res.

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Fly ash from municipal solid waste incinerators has been classified as hazardous waste due to the presence of unintentionally-produced Persistent Organic Pollutants (POPs), with Polychlorinated biphenyls (PCB) being a major group among such POPs. Fly ash can be mechanically (MC) treated to destroy organic pollutants before final disposal or reuse. In this study, model fly ash (MFA) doped with 0.2% CuCl 2 was artificially prepared and subjected to high intensity ball milling for 0 (original sample), 1, 2, 4, and 8 h of treatment. Furthermore, to explore PCB reformation in the MC treated fly ash, de novo tests were conducted at single reaction time, temperature, and air flow rate. It was found that the sum of PCB, dioxin like PCB, and corresponding International Toxic Equivalent concentrations (∑PCB, ∑dl-PCB and ∑I-TEQ, respectively) were greatly reduced both in gas and in solid phase of MFA after 8 h of treatment. Though chlorination degree successively decreased with prolonged milling, the homologue and isomer signatures of PCB were varied in concentration. Reformation of few isomers was also observed. Results from present study suggest that MC treatment is an effective method to control reformation of pollutants in the long term. However, few suggestions are made for further ongoing research work on MC treatment of fly ash, which are based on surprising results and experimental limitations obtained in this study.

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Atmospheric Deposition of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in Two Cities of Southern China

Abstract: Atmospheric deposition is an important pathway for air pollutants entering the environment. In order to better understand both dry and wet deposition of PCDD/Fs in ambient air, two cities -Guangzhou and Nanjing in Southern China, were investigated.

Cited by 14 publications

References 46 publications

Sensitivity Analysis for Dry Deposition and PM2.5-bound Content of PCDD/Fs in the Ambient Air

Sensitivity Analysis for Dry Deposition and PM2.5-bound Content of PCDD/Fs in the Ambient Air

Environmental Assessment of Atmospheric Dioxin Dispersion from a Municipal Wastes Power Plant, Indonesia

Mechanical Treatment of MSWI Fly Ash: A Way Forward to Inhibit PCB Reformation

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