Review
Environmental Sciences
Lili Yang, Guorui Liu, Jia Shen, Minxiang Wang, Qiuting Yang, Minghui Zheng
Summary: PBDD/Fs are emerging persistent organic pollutants with potentially higher toxicities than dioxins, but accurate quantification is challenging, leading to a lack of research on toxicities, formation mechanisms, and environmental fates. Different congener profiles between PBDD/Fs and dioxins indicate their distinct sources and formation mechanisms.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Environmental Sciences
Chunlin Zhang, Li Bai, Qian Yao, Jiangyong Li, Hao Wang, Liran Shen, Olli Sippula, Jun Yang, Jinping Zhao, Jun Liu, Boguang Wang
Summary: This study investigated PCDD/F emissions from industrial boilers fired with different biomass fuels and found that some emissions exceeded limit values, with 2,3,4,7,8-PeCDF potentially being a good indicator of dioxin-induced toxicity. The emission factor varied among the boiler types, with biomass-pellet-fired boilers having the highest emissions.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Chu Wang, Shujun Dong, Pu Wang, Yanfen Hao, Ruiguo Wang, Qinghua Zhang, Guibin Jiang
Summary: In this controlled feeding experiment, the toxicokinetics of polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) in laying hens were investigated. The results showed that the levels of PCDD/Fs in the laying hens increased rapidly during the exposure period and then gradually decreased during the depletion period. The distribution of different congeners in the hens' tissues varied, and more lipophilic congeners were preferentially transferred to the eggs through maternal transfer.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Tomoya Takiguchi, Hoa Thi Vu, Yoshikazu Nishino
Summary: Bone metabolism is regulated by endocrine systems, and exposure to PCDD/Fs can have adverse effects on bones and teeth. Previous studies have shown that exposure to PCDD/Fs can affect odontogenesis and bone genesis, particularly enamel formation and palatine bone. It is also found that exposure to PCDD/Fs in milk can affect both teeth and bones, with reversible effects on bones. Furthermore, high concentrations of PCDD/Fs can adversely affect teeth even in adulthood, but exposure to PCDD/Fs may also induce osteogenesis and improve bone properties. Further human studies are needed to investigate the associations between PCDD/F concentrations and biological markers for teeth and bones.
Article
Environmental Sciences
Shuai Sun, Rong Cao, Jing Jin, Yichi Zhang, Yuan Gao, Xianbo Lu, Jiping Chen, Haijun Zhang
Summary: This study investigated the levels and accumulation characteristics of PCDD/Fs and PCBs in nine pools of representative plant-origin foodstuffs from markets in five regions of the Chinese mainland. The results showed that cereals and vegetable oil contributed the most to the estimated dietary intakes of WHO-TEQ.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Food Science & Technology
Neus Gonzalez, Jose L. Domingo
Summary: It is established that dietary intake is the main route of human exposure to PCDD/Fs for non-occupationally exposed populations. Recent studies have focused on determining levels of PCDD/Fs in food samples of different origins and their dietary intake. Reductions in environmental emissions of PCDD/Fs have led to decreases in both food samples and biological tissues. Overall, current data shows that tolerable daily/weekly/monthly dietary intakes of PCDD/Fs are not being exceeded.
FOOD AND CHEMICAL TOXICOLOGY
(2021)
Article
Environmental Sciences
Shuai Sun, Baoqin Zhang, Yun Luo, Xindong Ma, Rong Cao, Yichi Zhang, Yuan Gao, Jiping Chen, Haijun Zhang
Summary: This study collected breast milk samples from 51 mothers in Dalian, China, and found that they had higher exposure to polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) due to their higher consumption of seafood. The study also observed differences in the accumulation potentials of different PCDD/F and PCB congeners in breast milk and highlighted the higher exposure risk of infants to these chemicals.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Fetta Mehouel, Leila Bouayad, Ali Berber, Samiha Boutaleb, Mohammad Miri, Marie-Louise Scippo
Summary: This study analyzed the levels of PCDD/Fs and DL-PCBs in swordfish caught in three regions of the Algerian coasts, finding concentrations below regulatory limits but potential health risks for consumers in Algeria due to higher intake values compared to established limits.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Engineering, Environmental
Mingxuan Wang, Guorui Liu, Lili Yang, Minghui Zheng
Summary: Understanding the formation mechanisms of persistent organic pollutants (POPs) is crucial for controlling emissions. This study focuses on the formation mechanisms of polyhalogenated dibenzo-p-dioxins and dibenzofurans (PXDD/Fs), as they are typical toxic POPs. The study reviews laboratory studies, theoretical calculations, and field studies to identify and verify the PXDD/Fs formation pathways. The integrated approach provides a methodological framework for investigating the formation mechanisms of PXDD/Fs and other POPs during combustion processes, aiding in the development of emission control strategies.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Shijian Xiong, Yaqi Peng, Ken Chen, Shengyong Lu, Wenqian Jiang, Xiaodong Li, Fei Wang, Kefa Cen
Summary: This study investigated the distribution, migration, and relationship of PCDD/F and heavy metals in a typical hazardous waste incinerator. The results showed that the air control pollution devices effectively reduced PCDD/F concentrations, and the sulfur content in hazardous waste played a role in emissions. The migration analysis revealed that PCDD/F mainly migrated to mixtures with sodium bicarbonate and activated carbon, and heavy metals were classified based on their volatility. The findings also showed correlations between PCDD/F emissions and certain heavy metals.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Yara Mahfouz, Mireille Harmouche-Karaki, Joseph Matta, Maya Mahfouz, Pascale Salameh, Hassan Younes, Khalil Helou, Ramzi Finan, Georges Abi-Tayeh, Mohamad Meslimani, Ghada Moussa, Nada Chahrour, Camille Osseiran, Farouk Skaiky, Jean-Francois Narbonne
Summary: The aim of this study was to measure the levels of PCDD/Fs in a sample of pregnant women in Lebanon and explore potential associated factors. Results showed the importance of dietary, anthropometric, and environmental factors in the sample's exposure to PCDD/Fs.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
David Vernez, Christelle Oltramare, Baptiste Sauvaget, Helene Demougeot-Renard, Lothar Aicher, Nicolas Roth, Isabelle Rossi, Arianna Radaelli, Sylvain Lerch, Vincent Marolf, Aurelie Berthet
Summary: High concentrations of PCDDs and PCDFs were found in the soil in Lausanne, Switzerland, possibly from a former waste incinerator. A three-step approach was taken to assess the human health risks and identify preventive measures. The results highlighted concerns about the consumption of food products derived from contaminated land.
ENVIRONMENTAL POLLUTION
(2023)
Article
Energy & Fuels
Jun-Ik Son, Seung-Jae Lee, Se-In Park, Eun-Hye Kwon, Hueon Namkung, Jun-Gu Kang, Wonseok Lee
Summary: This study evaluated the emission of PCDD/DFs in seven incineration plants in Korea using SRF and bio-SRF. The results showed that all seven plants effectively managed their dioxin emissions, but both SRF and bio-SRF plants produced a large amount of highly chlorinated dioxins. The SRF plants had a high ratio of OCDF and showed a low ratio of OCDF to 1,2,3,4,6,7,8-HpCDF.
Article
Environmental Sciences
Bondi Gevao, Karell Martinez-Guijarro, Perihan Binnur Kurt-Karakus, Carol Sukhn, Roland Weber, Divya Krishnan, Smitha Rajagopalan, Askin Birgul, Hassan Alshemmari, Mariam Hajeyah, Majed Bahloul, Mohamed I. Orif
Summary: The study monitored the concentrations of PCDD/F in the Middle East using passive air samplers at 12 sites across four countries. The highest concentrations were found in Oman and Kuwait, with a potential additional source involving the use of elemental chlorine. The study provides reliable measurements for assessing time trends in PCDD/F in the air.
ATMOSPHERIC POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Yuxuan Ying, Yunfeng Ma, Xiaoxiao Wang, Hong Yu, Angjian Wu, Shengyong Lu, Xiaodong Li, Xiaoqing Lin, Lijun Liu, Wenhua Yin
Summary: Growing amounts of industrial waste are being co-incinerated with municipal solid waste in incineration plants, but there have been few studies on the characterization of PCDD/Fs during co-incineration. This study analyzes the emission characteristics and formation pathways of PCDD/Fs during the co-disposal of textile/food industry waste and municipal solid waste in a fullscale incineration plant. It is found that the emission of toxic PCDD/Fs in the chimney and fly ash is below the national standard. The co-incineration of textile industry waste significantly influences PCDD/Fs emission, while the co-incineration of food industry waste has a lesser impact.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Hsi-Hsien Yang, Sunil Kumar Gupta, Narayan Babu Dhital, Lin-Chi Wang, Suresh Pandian Elumalai
JOURNAL OF ENVIRONMENTAL SCIENCES
(2020)
Article
Environmental Sciences
Hsi-Hsien Yang, Narayan Babu Dhital, Nicholas Kiprotich Cheruiyot, Lin-Chi Wang, Shi-Xiong Wang
Summary: This study investigated the effects of road grade on real-world tailpipe emissions of motorcycles, finding that the emission factors of pollutants were significantly higher on uphill routes compared to downhill and baseline routes. The results may help in identifying emission hotspots along roads and formulating traffic air pollution control strategies.
ATMOSPHERIC POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Ming-Huang Wang, Chiu-Wen Chen, Chih-Feng Chen, Lin-Chi Wang, Ta-Kang Liu, Cheng-Di Dong
Summary: This study investigated the concentrations and distribution of 16 US EPA polycyclic aromatic hydrocarbons (PAHs) in water treatment plants, sewage treatment plants, and industrial water treatment plant sludge in Taiwan. The results revealed the presence of these compounds, with 2-4 ring PAHs being the predominant compounds. The study also assessed the contributions from different sources and evaluated the toxicity levels.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Engineering, Environmental
Lin-Chi Wang, Justin Chun-Te Lin, Cheng-Di Dong, Chiu-Wen Chen, Ta-Kang Liu
Summary: The study found that microplastic pellets collected from sandy beaches around Taiwan contained various organic pollutants, with high concentrations of PCDD/Fs, PBDD/Fs, PBDEs, and other POPs. These pollutants were mainly adsorbed into the inner part of microplastic pellets, resulting in a high ratio of total concentrations to surficial concentrations.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Multidisciplinary Sciences
Ying-Fang Wang, Yu-Chieh Kuo, Lin-Chi Wang
Summary: This study assessed the metal fume exposure of welders in a shipyard using NF/FF mathematical model and BDA technique. Results showed a statistically significant correlation between predicted exposure concentrations and field worker's exposure concentrations, with Fe, Mn, and Pb exposures likely to exceed action levels, indicating immediate preventive measures should be taken.
SCIENTIFIC REPORTS
(2022)
Article
Green & Sustainable Science & Technology
Hsi-Hsien Yang, Nicholas Kiprotich Cheruiyot, Chitsan Lin, Lin-Chi Wang
Summary: Unlike studies on chlorinated organic pollutants, there have been few investigations on the emissions of brominated organic pollutants from the start-up processes of waste incinerators. This study found that the start-up processes can contribute to a significant proportion of the annual emissions of PBDD/F, PBB, and PBDE. It also revealed that cleaning accumulated ash and reducing the residence time of flue gas are effective strategies for controlling the emissions of brominated organic pollutants.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Li-Hao Young, Chau-Wei Lai, Jau-Huai Lu, Hsi-Hsien Yang, Lin-Chi Wang, Yu-Han Chen
Summary: This study examines the effects of diesel-gas co-fuels, engine loads, and aftertreatment on emissions from a heavy-duty diesel engine. The results show that the gas fuels increase hydrocarbon emissions, decrease opacity, and increase emissions of both volatile and nonvolatile nanoparticles. Special attention should be given to the addition of H-2 under high load, as it causes significant increases in volatile nanoparticles. The nonvolatile nanoparticles can be effectively removed by the aftertreatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Narayan Babu Dhital, Lin-Chi Wang, Hsi-Hsien Yang, Nicholas Kiprotich Cheruiyot, Che-Hsuan Lee
Summary: This study measured the real-world emission factors of PM, PAHs, and gaseous air pollutants for different diesel-fueled non-road construction machines in Taiwan, providing valuable data for future source apportionment studies. The results showed higher emissions of total hydrocarbons and nitric oxide, while high-molecular weight PAHs had a significant impact on Benzo[a]pyrene equivalent toxicity.
Article
Environmental Sciences
Sheng-Lun Lin, Hongjie Zhang, Lin-Chi Wang, Yen-Yi Lee, Chien-Er Huang
Summary: This study focuses on the polycyclic aromatic hydrocarbons (PAHs) emissions from two different fuel-injection types of motorcycles and investigates the effects of engine and emission control conditions on the emissions. The results show that throttle opening, secondary air system, oxygen sensor, oxidation catalytic converter, and three-way catalytic converter have significant influences on PAH emissions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Chen -Wei Liu, Wei-Jiun Hong, Bo-Tai Yang, Chi-Wen Lin, Lin-Chi Wang, Chun-Chi Chen
Summary: This study presents a novel recycling method for carbon fiber reinforced polymer composites (CFRPs) using a mixture of deep eutectic solvents and metal salt catalysts. The method allows for the effective recovery of both carbon fibers and epoxy resin from CFRPs, with the recovered carbon fibers retaining a high strength.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Wentao Zhang, Mouyi Weng, Mingzheng Zhang, Yaokun Ye, Zhefeng Chen, Simo Li, Shunning Li, Feng Pan, Lin-wang Wang
Summary: This study simulates the morphology evolution of dendrites in an electrolyte environment using a machine learning force field model and a self-consistent continuum solvation model. It suggests that reducing the surface and grain boundary energy can stabilize the dendrite morphology. Furthermore, the formation of multiple domains can also increase the stability of dendrites.
ADVANCED ENERGY MATERIALS
(2022)
Article
Environmental Sciences
Chih-Chung Lin, John Karl Exiomo Macrohon, Peter Brimblecombe, Latonia Nur Adyanis, Chi-Fu Yeh, Chin-Hsing Lai, Lin-Chi Wang
Summary: This study found significantly higher concentrations of total mercury in the dry season compared to the wet season in urban and industrial areas in Taiwan. Total gaseous mercury was the main component in the air, accounting for over 90% of the total mercury. Extreme mercury concentrations were observed near cement works and iron-steel plants, indicating their strong contribution to ambient air mercury concentrations.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Aulia Nur Mustaqiman, John Paul Santos, Chen-Yu Lin, Fefi Eka Wardiani, Lin-Chi Wang
Summary: Diesel oxidation catalyst (DOC) and particle oxidation catalyst (POC) can effectively reduce pollutant emissions from diesel engine exhaust without losing power. The filtration efficiency of POC is lower than that of diesel particulate filter (DPF), but it still meets the relevant standards. However, there are limitations in reducing polycyclic aromatic hydro-carbons (PAHs) removal efficiency with POC.
ATMOSPHERIC POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Guoping Gao, Lin-Wang Wang
Summary: This study utilized grand canonical fixed-potential calculations to obtain the charge transfer coefficient and potential-dependent reaction barriers, successfully predicting the polarization curves of hydrogen evolution reaction and hydrogen oxidation reaction. It demonstrated the unreliable correlation between Tafel slope and a specific reaction channel. The results highlighted the significant roles of the fixed-potential approach, explicit water layer structure, and cations in accurately predicting the Pt surface reactions.
Article
Environmental Sciences
Kaijie Xu, Kangping Cui, Jin-Luh Mou, Ya-Fen Wang, Lin-Chi Wang
Summary: Investigation into dust agglomeration in an electrostatic precipitator (EP) during the sintering process at an ironmaking plant revealed that unburned carbon was the main factor contributing to the issue. To prevent dust agglomeration, it is crucial to control the fuel particle size and ratio, enhance sealing of various components, and maintain adequate bedding material thickness during the sintering process.
AEROSOL AND AIR QUALITY RESEARCH
(2021)