Article
Engineering, Marine
Artyom Belesov, Timofey Rezviy, Sergey A. Pokryshkin, Dmitry E. Lakhmanov, Dmitry G. Chukhchin, Alexandr Yu Kozhevnikov
Summary: The Northern Dvina River may be a major source of microplastic pollution in the Arctic region, with coastal sediments acting as an intermediate link in the transport of microplastics to the White and Barents Seas. The study found that a significant amount of microplastic particles, particularly ABS and PS plastics, accumulate in the coastal sediments and are carried away by strong currents, leading to pollution of the Barents and White Seas.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Guangteng Bai, Juyang Fu, Qian Zhou, Xiangliang Pan
Summary: Tire wear particles (TWPs), a type of thermosetting microplastic, accumulate in aquatic environments due to their wide use in road traffic. Aging of tire materials due to friction heat can lead to water evaporation, additive volatilization, and polymer decomposition, posing potential risks to ecosystems. This study investigated the pyrolysis behaviors and products of thermally aged tire MPs using a thermogravimetric analyzer coupled with FTIR and GC/MS. The results revealed the main pyrolysis gases and products, and showed changes in the release of compounds with thermal aging. These findings provide new insights into TWP aging evaluation and their fate in aquatic and terrestrial environments.
Article
Chemistry, Analytical
Lingjun Zhu, Jian Xu, Yujie Dai, Jian Jiang, Shan Liao, Guojun Zhou, Shurong Wang
Summary: This study investigated the thermal degradation process of tobacco leaves and the release behavior of small molecular gas products. The results showed that the composition of nitrogen-containing heterocyclic compounds and hydrocarbons in the tobacco leaves was highly influenced by temperature.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Energy & Fuels
Zhiwei Wang, Mengge Wu, Gaofeng Chen, Mengju Zhang, Tanglei Sun, Kiran G. Burra, Shuaihua Guo, Yan Chen, Shuhua Yang, Zaifeng Li, Tingzhou Lei, Ashwani K. Gupta
Summary: Co-pyrolysis technology is an important method for the efficient utilization of waste tires and biomass resources, with synergistic effects observed in the pyrolysis of waste tire and maize stalk. The co-pyrolysis process showed increased weight loss, and the FTIR and GC/MS analysis revealed similar functional groups and improved product yields.
Article
Environmental Sciences
So-Young Lee, Jiyul An, Jung-Hwan Kwon
Summary: This study presents a new sequential analytical method that combines Fourier-transform infrared spectroscopy and pyrolysis-gas chromatography/mass spectrometry to characterize and quantify microplastics in environmental samples. The method allows for identification of the polymer type, physical dimensions, and chemical composition of the microplastics.
ENVIRONMENTAL POLLUTION
(2023)
Article
Polymer Science
Min-Hyun Cho, Yu-Jin Song, Chan-Joo Rhu, Byung-Rye Go
Summary: This study used two analytical methods, TG-FTIR and TED-GC-MS, combined with thermogravimetric analysis to evaluate the thermal-degradation process of individual and mixed samples of PP, PET, and PVC. The results showed that the volatilization of polymers may be underestimated during pyrolysis. TG-FTIR and TED-GC-MS showed strong advantages in identifying mixed microplastics through different discrimination mechanisms. This study provides deep insight into pyrolysis behaviors and the interactions of mixed polymers, and the obtained results can help better comprehend the complex pyrolysis process.
Article
Engineering, Environmental
Chang-Fei Yu, Shang-Hao Liu, Liang Yuan, Dan -Dan Wei
Summary: In this study, the thermal decomposition of cumene hydroperoxide (CHP) was investigated using differential scanning calorimetry under a nitrogen atmosphere. Kinetic analysis was performed and the gaseous products of thermal decomposition were analyzed. The possible decomposition path of CHP was discussed, filling the gap of unclear decomposition mechanism in an inert atmosphere and providing important reference for its industrial production and application.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Environmental
Wei-Hsin Chen, Shih-Che Sun, Jherwin B. Ocreto, Thanh-Binh Nguyen, Su Shiung Lam, Young-Kwon Park, Cheng-Di Dong
Summary: The detailed combustion behavior and pyrolysis kinetics of microplastics are still absent in the current research. Adding silica to HDPE microplastics can effectively avoid their agglomeration during pyrolysis. The results suggest that less than 20% of PE in the mixture can retain microplastic pyrolysis characteristics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Lasse Abraham Rasmussen, Jeanette Lykkemark, Theis Raaschou Andersen, Jes Vollertsen
Summary: In this study, samples were collected from seven roads and parking lots using a road surface cleaning truck, resulting in approximately 100 kg of particulate material per site. Analysis of the samples revealed that on average, tyre wear particles accounted for 0.09% of the dry mass. Other types of microplastics were also present but at concentrations 49 times lower than tyre wear particles. The study found no correlation between land use and the total concentrations of microplastics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Marie Noel, Catherine Wong, Peter S. Ross, Shreyas Patankar, Anahita Etemadifar, Carmen Morales-Caselles, Shirley Lyons, Kelsey Delisle
Summary: Microplastics were found in both surficial marine sediment and mussel samples collected along the coast of British Columbia, Canada, with the main source being textiles. Victoria Harbour and the North Coast were identified as hotspots of microplastic pollution.
MARINE POLLUTION BULLETIN
(2022)
Article
Food Science & Technology
Angela Dambrosio, Stefania Cometa, Flavia Capuozzo, Edmondo Ceci, Michele Derosa, Nicoletta Cristiana Quaglia
Summary: The aim of this study was to detect, quantify, identify and classify microplastics in mussels (Mytilus galloprovincialis) marketed in fishery stores in Bari and its surroundings (Apulia, Italy). A total of 5077 particles were isolated from our samples, with an average value of 1.59 +/- 0.95 MPs/g and 6.51 +/- 4.32 MPs/individual. Blue fragments, sized 10-500 mu m, were the prevalent findings; most of them belonged to Polyamide (PA) polymers. The results of this study help to show that mussels represent a source of microplastics for consumers and a direct risk to their health.
Article
Environmental Sciences
Conrad Sparks, Adetunji Awe, Jade Maneveld
Summary: The study found that microplastics in mussels sold in Cape Town, South Africa were mainly composed of MP filaments and fragments, with blue/green and black/grey being the predominant colors. The main polymer type identified was filamentous PET. Retail mussels in Cape Town were observed to have lower concentrations of MPs compared to other investigations, suggesting a need for routine monitoring of seafood in the country.
MARINE POLLUTION BULLETIN
(2021)
Article
Agricultural Engineering
Ranjeet Kumar Mishra
Summary: The present study investigates the physicochemical characterization, kinetic, thermal degradation behaviors, and online characterization of vapour products. The results demonstrate the potential of the pyrolysis feedstock and provide insights into the reaction mechanisms and composition changes during pyrolysis process.
BIORESOURCE TECHNOLOGY
(2022)
Article
Thermodynamics
Zhao Lei, Qijun Liang, Qiang Ling, Ping Cui, Zhigang Zhao
Summary: The generation mechanism of light tar during Shenfu bituminous coal pyrolysis was investigated using a combination of TGA, Py-GC/MS, TGA-FTIR, and ReaxFF simulations. The study showed that the pyrolysis process involved activation, pyrolysis, and condensation stages, with the initiation of coal pyrolysis attributed to the cleavage of oxygen-containing groups. The reaction mechanism of light tar was identified as free radical addition reaction, primarily deriving free radicals from the cleavage of C-O chemical bonds.
Article
Engineering, Environmental
Fatemeh Tabatabaei, Roya Mafigholami, Hamid Moghimi, Sanaz Khoramipoor
Summary: This study investigates the biodegradation capacity of microplastics (MPs) by indigenous microorganisms from Tehran drinking water treatment plants. The results show that selected microbial colonies can cause structural, morphological, and chemical changes in MPs.
WATER SCIENCE AND TECHNOLOGY
(2023)
Review
Environmental Sciences
Attila Csaba Kondor, Anna Viktoria Vancsik, Laszlo Bauer, Lili Szabo, Zoltan Szalai, Gergely Jakab, Gabor Maasz, Marta Pedrosa, Maria Jose Sampaio, Ana Rita Lado Ribeiro
Summary: This review provides a critical overview of research on the removal efficiency of priority substances and compounds of emerging concern through bank filtration, discussing influencing factors and future challenges. The findings show that the efficiency of bank filtration is influenced by multiple factors and varies for different substances.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Xinyan Wang, Shuai Zhang, Huihui Yan, Zhao Ma, Yunshan Zhang, Haining Luo, Xueli Yang
Summary: This study investigated the association between ambient PM2.5, O3 pollution, and ovarian reserve in reproductive-aged Chinese women. The results showed that increased exposure to PM2.5 and O3 was associated with decreased AMH levels, indicating reduced ovarian reserve. Notably, the effects of O3 exposure on ovarian reserve were different from those of PM2.5 exposure.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Tingting Ma, Yanjuan Ding, Fengjiao Xu, Chen Zhang, Min Zhou, Ya Tang, Yanrong Chen, Yating Wen, Rufei Chen, Bin Tang, Shigui Wang
Summary: The dragonfly species Orthetrum albistylum can accumulate heavy metals, and its heat shock protein genes have the potential to serve as biomarkers for monitoring environmental pollutants.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Naoto Ishiwaka, Koya Hashimoto, Masayoshi K. Hiraiwa, Francisco Sanchez-Bayo, Taku Kadoya, Daisuke Hayasaka
Summary: Systemic insecticides and rising temperatures have combined effects on the abundance of Odonata nymphs in paddy fields. The standalone effect of insecticide exposure decreased the Odonata community, while nymphs decreased synergistically with temperature rise in paddy water. However, the impacts of each stressor alone varied among species.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Marco Vecchiato, Carlo Barbante, Elena Barbaro, Francois Burgay, Warren R. L. Cairns, Alice Callegaro, David Cappelletti, Federico Dallo, Marianna D'Amico, Matteo Feltracco, Jean-Charles Gallet, Andrea Gambaro, Catherine Larose, Niccolo Maffezzoli, Mauro Mazzola, Ivan Sartorato, Federico Scoto, Clara Turetta, Massimiliano Varde, Zhiyong Xie, Andrea Spolaor
Summary: The Arctic region is facing contamination from long-range pollution and local human activities. Polycyclic Aromatic Hydrocarbons (PAHs) are used as environmental indicators for emission, transport, and deposition processes. Research conducted in the Arctic surface snow in Ny-Ålesund, Svalbard from October 2018 to May 2019 shows that long-range inputs of PAHs mainly occur in winter, while the most abundant analyte retene exhibits opposite seasonal trends.
ENVIRONMENTAL POLLUTION
(2024)
Review
Environmental Sciences
Maoshui Zhuo, Zhijie Chen, Xiaoqing Liu, Wei Wei, Yansong Shen, Bing-Jie Ni
Summary: This paper discusses the application of three catalytic processes (photocatalysis, electrocatalysis, and biocatalysis) in the management of microplastic pollution, and introduces the efficiency and catalytic mechanisms of different catalysts. It also proposes the development prospects for sustainable management of microplastic pollution.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Shiyu Chen, Zhenzhen Shi, Qiang Zhang
Summary: In this study, a human physiologically based pharmacokinetic (PBPK) model of diethyl phthalate (DEP) was developed to assess its toxicity. The model considers the distribution and metabolism of DEP and its active metabolite monoethyl phthalate (MEP) in different tissue compartments. Sensitivity analysis and Bayesian Markov chain Monte Carlo (MCMC) simulations were performed to evaluate the uncertainty and variability of the model parameters. The results suggest that dermal absorption is an important route of exposure to DEP in the environment.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Bangguo Wang, Lijing Wang, Wenxi Cen, Tao Lyu, Peter Jarvis, Yang Zhang, Yuanxun Zhang, Yinghui Han, Lei Wang, Gang Pan, Kaili Zhang, Wei Fan
Summary: This study investigates the feasibility and mechanisms of a chemical-free nanobubble-based AOP for treating organic micropollutants in water. The results show that the oxygen nanobubble AOP has a significantly higher removal efficiency compared to air and nitrogen nanobubbles. The treatment performance is not affected by pH and the presence of ions. Higher initial concentrations of the micropollutant lead to slower treatment processes, but similar removal performance is achieved in the end. The presence of organic matter reduces the removal rate of the micropollutant. The results have practical feasibility for water and wastewater treatment.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Yingmei Huang, Jicai Yi, Yao Huang, Songxiong Zhong, Bin Zhao, Jing Zhou, Yuxuan Wang, Yiwen Zhu, Yanhong Du, Fangbai Li
Summary: This study investigates the impact of biochar on methylmercury (MeHg) accumulation in rice. The results show that biochar reduces MeHg levels in paddy soils by decreasing bioavailable Hg and microbial Hg methylation. Additionally, biochar decreases the uptake and translocation of MeHg in rice plants, resulting in a reduction of MeHg accumulation in rice grains.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Nengde Zeng, Fei Huang, Jiani Du, Chenghao Huang, Qian Yang, Xinhua Zhan, Baoshan Xing
Summary: This study investigates the protein targets and protein-ligand interactions related to PAH contamination in crop xylem sap using computational tools. The results show that phenanthrene has a more pronounced effect on the xylem sap proteins of maize and wheat, with maize DEPs associated with lipid biosynthesis and wheat DEPs exhibiting an increase in ABC transporters. This study provides insights into the regulation and movement of PAHs within plant xylem.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Xinwei Chen, Hao Ma, Run Wang, Man Wang, Binbin Zhu, Yanqing Cong, Xiayue Zhu, Guoqin Wang, Yi Zhang
Summary: Co3O4/TiO2-NRs electrodes with excellent photoresponse were prepared via plasma-assisted modification of Co3O4 on TiO2. The combination of Co3O4 and TiO2 improved the light utilization efficiency and showed potential for degradation of pollutants.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Wenjing Ji, Liying Song, Jing Wang, Hongqing Song
Summary: This study conducted a life-cycle assessment to examine the correlation between natural gas consumption and carbon emissions in different end uses in China. The results showed that both natural gas consumption and life-cycle carbon emissions have been increasing since 2017. Significant variations in NG life-cycle carbon emissions were found across different provinces and sectors, highlighting the need for targeted efforts to reduce carbon emissions.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Youyi Chen, Boxuan Zhang, Pojun Zhang, Guogui Shi, Hao Liang, Wu Cai, Jingyu Gao, Sumin Zhuang, Kaiyin Luo, Jiaqi Zhu, Chaoxiang Chen, Kunyu Ma, Jinrong Chen, Chun Hu, Xueci Xing
Summary: The synergistic effects of trace sulfadiazine and cast-iron corrosion scales on the formation of disinfection by-products in drinking water distribution systems were investigated. The presence of magnetite resulted in increased concentrations of DBPs due to the higher microbial activity and enhanced microbial extracellular electron transport pathway. The study highlights the importance of considering trace antibiotics pollution and corrosion scales in water sources for DBP control.
ENVIRONMENTAL POLLUTION
(2024)
Review
Environmental Sciences
Bishwa Raj Pokharel, Vijay Sheri, Manoj Kumar, Zhiyong Zhang, Baohong Zhang
Summary: This review summarizes the interactions, uptake, and transport of aluminum nanoparticles (Al-NPs) in plants, highlighting their negative effects on plant growth and development, as well as their potential to alter plant defense systems and gene expression.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Yonglu Wang, Fengsong Zhang, Xiaoyong Liao, Xiao Yang, Guixiang Zhang, Liyun Zhang, Chaojun Wei, Pengge Shi, Jiongxin Wen, Xiaorong Ju, Can Xu, Yang Liu, Ying Lan
Summary: This study aims to explore the effects of thiencarbazone-methyl center dot isoxaflutole on soil microflora and the potential mitigation mechanisms to bacterial communities. It was found that increasing the application of thiencarbazone-methyl center dot isoxaflutole resulted in increased stress on soil bacterial community structure and diversity. Increasing soil pH was recognized as a key factor in improving the diversity and structure of soil microflora. Supplemental use of nitrapyrin or modified attapulgite can increase soil pH and improve bacterial diversity.
ENVIRONMENTAL POLLUTION
(2024)