Article
Environmental Sciences
Ling Yang, Wei Luo, Pin Zhao, Yulan Zhang, Shichang Kang, John P. Giesy, Fan Zhang
Summary: This study conducted an investigation on the distributions and sources of microplastics (MPs) in the surface waters and sediments of five tributaries of the Koshi River in the Himalayas. It found that atmospheric transmission and deposition, as well as untreated sewage effluents and solid wastes, were the main sources of MPs. The study also revealed that fibers made up the majority of MP particles, with urbanization, agriculture, and tourism contributing to pollution in the river.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Heinrich T. J. Dahms, Gavin P. Tweddle, Richard Greenfield
Summary: This study investigated the levels of microplastics in water, sediment, and fish in the upper Vaal River in South Africa. Microplastics were found in all three mediums, and the shape or size of the microplastics did not affect their ingestion by fish.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Engineering, Environmental
Sansan Feng, Hongwei Lu, Tianci Yao, Yuxuan Xue, Chuang Yin, Meng Tang
Summary: The study investigated the abundance and distribution of microplastics in water bodies and sediments at the Qinghai-Tibet Plateau. Microplastics were found in all samples, with higher concentrations in areas with poor water quality and lower altitudes, but smaller sizes were found at higher altitudes.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Olusegun A. A. Dada, Jummai O. O. Bello
Summary: Plastic marine debris has been found to have a negative impact on marine organisms and the environment. This study investigated the presence of microplastics in the Nigerian Lagos Lagoon ecosystem and found that they were present in the water, sediment, and certain fish species. The contamination was primarily due to plastic debris from recreational, industrial, and domestic waste. Urgent measures are needed to protect Nigeria's coastal and marine ecosystems from plastic pollution.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Aris Ismanto, Tony Hadibarata, Risky Ayu Kristanti, Denny Nugroho Sugianto, Sugeng Widada, Warsito Atmodjo, Alfi Satriadi, Malya Asoka Anindita, Amal M. Al-Mohaimeed, Arshad Mehmood Abbasi
Summary: This study assessed the prevalence and distribution of microplastics in water and sediments of the Pekalongan River in Indonesia. The study found higher concentrations of microplastics in water compared to sediments. Fragment and film microplastics were the main components, with microplastics measuring less than 1 mm constituting more than half of the total. Colored microplastics, particularly blue and black microplastics, were also prominent. Polystyrene, polyester, and polyamide were identified as the primary polymer components.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Wei Sheng Choong, Tony Hadibarata, Adhi Yuniarto, Kuok Ho Daniel Tang, Faizuan Abdullah, Muhammad Syafrudin, Dunia A. Al Farraj, Amal M. Al-Mohaimeed
Summary: Microplastic contamination is a widespread issue in the Baram River, with fragments being the most common type of microplastic found. The study also identified five different types of microplastic polymers in the river, indicating a significant presence of microplastics in the water and sediment.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Imogen E. Napper, Anju Baroth, Aaron C. Barrett, Sunanda Bhola, Gawsia W. Chowdhury, Bede F. R. Davies, Emily M. Duncan, Sumit Kumar, Sarah E. Nelms, Md. Nazmul Hasan Niloy, Bushra Nishat, Taylor Maddalene, Natalie Smith, Richard C. Thompson, Heather Koldewey
Summary: Rivers are important pathways for microplastics to enter marine environments, but uncertainties exist regarding the amount of microplastics transported from rivers to the ocean, leading to inaccuracies in our understanding of microplastic quantity and transport in freshwater systems. Additionally, rivers may serve as long-term sinks for microplastics, with accumulation in sediment due to factors such as high density or other biological, chemical, and physical factors. This study compared the type and concentration of microplastics in air, water, and sediment along the Ganges River for the first time, from sea to source, to investigate abundance, spatial distribution, and characteristics. The study found that clothing is the likely primary source of microplastics in the river system, influenced by atmospheric deposition, wastewater, and direct input, particularly in high population density areas. However, a significant proportion of denser microplastics settle in sediment before the river discharges into the ocean, influenced by polymer type and shape.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Aris Ismanto, Tony Hadibarata, Denny Nugroho Sugianto, Muhammad Zainuri, Risky Ayu Kristanti, Ulung Jantama Wisha, Undang Hernawan, Malya Asoka Anindita, Audrey Primus Gonsilou, Mohamed Soliman Elshikh, Amal M. Al-Mohaimeed, Arshad Mehmood Abbasi
Summary: The aim of this study was to assess the presence of microplastics in the water and sediments of the Surakarta city river basin in Indonesia. The results revealed that fragments and fibers were the primary types of microplastics seen in both water and sediment samples, with a considerable percentage having dimensions below 1 mm.
MARINE POLLUTION BULLETIN
(2023)
Article
Engineering, Environmental
Sansan Feng, Hongwei Lu, Yuxuan Xue, Pengdong Yan, Tong Sun
Summary: This research focuses on the occurrence, drivers, sources, and exposure risks of microplastics (MPs) in the Jinsha River (JSR) basin in the source area of the Yangtze River on the Qinghai-Tibet Plateau. The results showed that MPs were more abundant in the tributaries than in the mainstreams and their abundance was negatively correlated with pH and altitude. The relationship between MPs and river width showed contrasting patterns due to the special terrain and hydrological conditions of plateau rivers.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Neha Badola, Faisal Sobhan, Jaspal Singh Chauhan
Summary: This study investigates the occurrence and distribution of microplastics (MPs) in the upper stretch of River Ganga in India. The study found that MPs were present in both water and sediment samples, with an average of 118.5 particles per 1000 L in water and 131.5 particles/kg dry weight in sediment. Fish samples also contained MPs, with different species having varying amounts, ranging from 12.63 to 53.13 particles per individual. The most common type of MP detected was fibers, and the polymer types varied among water, sediment, and fish samples, with polyethylene being predominant in water, polypropylene dominant in sediment, and polyethylene terephthalate and polystyrene most abundant in fish samples.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Md Jaker Hossain, Sheikh AftabUddin, Farjana Akhter, Nabila Nusrat, Atikur Rahaman, Mohammad Nurul Azim Sikder, Md Mostafa Monwar, Mohammed Shah Nawaz Chowdhury, Shan Jiang, Huahong Shi, Jing Zhang
Summary: This study investigated the presence of microplastic pollution in the Karnafullly River in Bangladesh. Microplastics were found in the river's surface water, sediment, and biota. The highest concentrations of microplastics were detected in the sediment and biota, with the trend of pelagic organisms showing the highest level of microplastic ingestion. The most common types of microplastics were polyethylene and polyethylene terephthalate. Based on the findings, it was estimated that individuals in Bangladesh may consume a significant amount of microplastics each year.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Muhammed Atamanalp, Mine Kokturk, Veysel Parlak, Arzu Ucar, Gokhan Arslan, Gonca Alak
Summary: This study is the first to measure and characterize microplastics in freshwater ecosystems in Turkey, specifically in the Karasu River. Microplastics were found in the gastrointestinal systems of fish belonging to the carp family, with the most common shape being fiber and the most common type of plastic pollutants found in the European chub species Squalius cephalus. The presence of microplastics in dominant fish species suggests potential impacts on biota in inland waters.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Ezra D. Osorio, Maria Antonia N. Tanchuling, Ma. Brida Lea D. Diola
Summary: The study revealed that microplastics are widely present in the river mouths of the Philippines, with varying concentrations. The most abundant shape was fragments, and the most common colors were white, blue, and transparent. The main types of microplastics found were polypropylene, high and low-density polyethylene, and polystyrene.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Article
Environmental Sciences
Rui Min, Kai Ma, Hongwei Zhang, Jiaqian Zhang, Siyi Yang, Tianhong Zhou, Guozhen Zhang
Summary: This study systematically investigated the distribution of microplastics (MPSs) in the surface water and bank sediments of Liujiaxia Reservoir in the upper Yellow River for the first time. The results showed that the main types of MPSs in the reservoir were PET, PS, and PP, and the abundance ranged from 4.48 to 12.09 item/L in the surface water and from 447.27 to 1543.80 item/kg (dry weight) in the bank sediments. The study provides valuable data for future pollution control and management in the reservoir area.
Article
Environmental Sciences
Siquan Wang, Yizhi Cai, Liya Ma, Xiaoping Lin, Qin Li, Yongyu Li, Xinhong Wang
Summary: PFAS concentrations in the Jiulong River water showed seasonal variations, with higher levels during the dry season. Long chain PFAS exhibited high bioconcentration factors (BCFs), while short and medium carbon chain PFAS had weak bioconcentration capacity. The hazard ratios (HR) suggested that frequent consumption of river fish may pose health risks to local population.
Article
Chemistry, Multidisciplinary
Yu Luo, Xilong Wang, Weiming Hu, Yan Peng, Chaoqin Wang, Ting Yu, Sidi Cheng, Jing Li, Yimiao He, Chunfang Gan, Shuang Luo, Qiang Zhu
Summary: In this study, inherently chiral 6,7-diphenyldibenzo[e,g][1,4]diazocine (DDD) was synthesized enantioselectively for the first time using chiral phosphoric acid (CPA) as a catalyst. The reaction yielded 82% of the desired product with a 98% enantiomeric excess. The method could also be applied to racemic biaryl diamines through kinetic resolution. DDD's high energy barriers and chemical stability make it an ideal platform for developing new chiral ligands and catalysts.
Review
Food Science & Technology
Xilong Wang, Bei Le, Na Zhang, Kathrine H. Bak, Yuhao Zhang, Yu Fu
Summary: Collagen peptides from fish have excellent bioactive and functional properties, making them important functional ingredients in the food industry. However, the off-flavour in fish collagen peptides limits their application. Therefore, researching the removal of off-flavour compounds from fish collagen peptides is of great importance.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Qiong Yang, Yuqing Wang, Ying Liu, Junfeng Liu, Xiurong Hu, Jianmin Ma, Xuejun Wang, Yi Wan, Jianying Hu, Zhaobin Zhang, Xilong Wang, Shu Tao
Summary: The high-speed rail (HSR) network in China has rapidly developed since the 2000s. The future expansion of the railway network and construction of an HSR system will have significant impacts on regional development and air pollutant emissions. This study uses a transportation network-multiregional computable general equilibrium (CGE) model to analyze the dynamic effects of HSR projects on economic growth, regional disparities, and air pollutant emissions in China. The results show that HSR system improvement can stimulate positive economic impact but also increase emissions, and different regions experience varying effects on GDP growth and air pollution emissions due to HSR investment.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Ecology
Yongping Kou, Chaonan Li, Bo Tu, Jiabao Li, Xiangzhen Li
Summary: The assembly mechanisms of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities along an altitudinal gradient were investigated. The study found that the alpha-diversity of AOA communities decreased monotonically with increasing elevation, while a sinusoidal pattern was observed for AOB communities. Mean annual temperature was the most influential factor for the alpha-diversity of AOA communities, while plant richness, soil conductivity, and total nitrogen made comparable contributions to the alpha-diversity of AOB communities. Additionally, beta-diversity of AOA and AOB communities were divided into two distinct clusters by elevation, mainly attributed to soil pH and variations in plant richness. AOB communities contributed more to soil nitrification potential in the low-altitude section, while AOA communities were more important in the high-altitude section.
Article
Engineering, Chemical
Shuai Wang, Yipin Lv, Xilong Wang, Daowei Gao, Aijun Duan, Huaiqing Zhao, Peng Zheng, Guozhu Chen
Summary: A well-designed catalyst with platinum and gold encapsulated in zeolite was studied for semi-hydrogenation reaction. Gold nanoparticles and zeolite surface were identified as the active sites for the reaction, with the gold active site showing preferable selectivity for phenylacetylene and 1,5-cyclooctadiene.
Article
Environmental Sciences
Xian Wang, Yuqing Wang, Ying Liu, Junfeng Liu, Xiurong Hu, Jianying Hu, Yi Wan, Xuejun Wang, Jianmin Ma, Xilong Wang, Shu Tao
Summary: Freight transport in China has become increasingly important in terms of CO2 and air pollutant emissions, but few studies have used consumption-based methods to assess its environmental impact. Using multi-regional input-output tables, this study employs structural path analysis to determine the link between interprovincial trade-related freight turnover and responsible sectors of final consumption. The findings reveal significant growth in interprovincial trade turnover and associated emissions, with final consumption in equipment, construction, service, and food driving the most freight turnover. Optimizing China's industrial geographical layout and trade structure is essential to reduce CO2 emissions associated with the freight transport system.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Wenqiang Zhao, Xiaohu Wang, Mia M. Howard, Yongping Kou, Qing Liu
Summary: Soil fungi play different roles in plant performance and community dynamics. The impact of fungi-mediated plant-soil feedbacks (PSFs) on tree species establishment during forest succession is still unclear. In this study, we inoculated pioneer broadleaf and nonpioneer coniferous tree seedlings with different soils collected from early-, mid-, and late-successional stages in a subalpine forest and compared their biomass and fungal communities. The results showed that pathogenic fungi in early-successional soils generated negative biotic feedbacks and lowered seedling biomass, while high levels of ectomycorrhizal fungi in mid- and late-successional soils facilitated coniferous seedling performance and favored successional development. The findings suggest that functional shifts in soil fungal communities play a critical role in mediating differential PSFs of tree species across successional stages.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Chuanhao Yan, Xuefeng Yu, Wenyi Jia, Jinglei He, Jing Hu, Meng Zhang, Jianlong Wang, Lin Tang, Junfeng Liu, Xilong Wang
Summary: Electrospinning was used to synthesize a cost-effective fiber mat CS-Glu-Th with superior sorption capacity, sorption rate, and selectivity for Au(III). The sorption mechanism involved electrostatic attraction and coordination interaction with C-N, C--N, and C--S groups, and C-N efficiently reduced sorbed Au(III) to elemental gold. CS-Glu-Th also showed favorable sorption selectivity for Au(III) under the interference of co-existing elements. Cost-benefit analysis demonstrated the profit potential of CS-Glu-Th for gold recovery from industrial applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Zhenrui Zhang, Shaoda Liu, Xilong Wang, Shurui Huang, Ke Sun, Xinghui Xia
Summary: Humic substances (HSs) significantly influence the transport and bioavailability of hydrophobic organic compounds (HOCs) in soils. This study investigated the sorption behavior of HOCs by different HS fractions in soils from different climatic zones. The results showed that HSs from colder climatic zones exhibited higher sorption affinity and different compositions compared to those from warmer climatic zones. The findings highlights the importance of considering the sorption differences of HOCs to HSs among different climatic zones in predicting HOC fates and bioavailability in soils.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Kai Yang, Xilong Wang, Hefa Cheng, Shu Tao
Summary: The aging processes of biochars in soils can slowly change their physicochemical properties, influencing their interaction with heavy metals. The effects of aging on immobilization of co-existing heavy metals in contaminated soils amended with contrasting biochars remain unclear. This study investigated the effects of wet-dry and freeze-thaw aging on the bioavailability and chemical fractionation of Cd and Pb in contaminated soil amended with chicken manure (CM) biochar and wheat straw (WS) biochar. The results showed that CM biochar effectively reduced the bioavailability of Cd and Pb, while WS biochar only immobilized Pb under freeze-thaw aging. The changes in heavy metal immobilization resulted from aging-induced alterations in biochar surface functional groups, porous structure, and dissolved organic carbon release. These findings are important for selecting suitable biochars for immobilizing multiple heavy metals in co-contaminated soil under changing environmental conditions.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Jia Liu, Kai Fang, Yongping Kou, Ruixue Xia, Heliang He, Wenqiang Zhao, Qing Liu
Summary: This study investigated the effects of forest secondary succession on the soil micro-food web and soil carbon and nitrogen mineralization. With forest succession, the total soil microbial biomass and the biomass of each microbial group generally increased. The changes in the soil nematode community were mainly observed in several trophic groups that are sensitive to environmental disturbance. The soil carbon and nitrogen mineralization rates also increased during forest succession, which were positively correlated with the composition and structure of the soil micro-food web.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xuefeng Yu, Chuanhao Yan, Jinglei He, Jinlong Zhang, Hangzhou Lv, Fuqiang Liu, Jianlong Wang, Junfeng Liu, Xilong Wang
Summary: In this study, a magnetic nanomaterial with a core-shell structure was successfully synthesized for effective adsorption of gold ions. The material demonstrated excellent selectivity, one-step reduction, and easy separation, marking a significant breakthrough in the field of gold ion recovery.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xuefeng Yu, Jinglei He, Chuanhao Yan, Yangyang Chu, Jing Hu, Wenyi Jia, Hangzhou Lv, Hanchao Zhang, Peng Wang, David Werner, Xilong Wang
Summary: A novel fibrous material was synthesized by treating carbon nanofibers with ammonia-plasma followed by N-Aminorhodanine assembly, and it was used for the sorption of Au(III). The results showed that the N-Aminorhodanine assembled-carbon nanofibers (N-AMCNFs) had a maximum sorption capacity of 229 mg/g for Au(III), which was 20.6 times higher than that of carbon nanofibers (11 mg/g). The excellent recovery of Au(III) by N-AMCNFs was mainly attributed to its hydrophilic nature, the presence of N- and S-containing soft base moieties, and electrostatic attraction between AuCl4- and N-AMCNFs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Meng Zhang, Yaqi Luo, Yitao Zhu, Haiyun Zhang, Xilong Wang, Wei Li, Pingping Li, Jiangang Han
Summary: This study investigated the effects of wheat straw-derived biochars on the bioavailability of PAHs and microbial communities, and their comprehensive impact on PAH biodegradation. The results showed that biochar addition inhibited the mineralization of low-concentration phenanthrene, but enhanced the mineralization of high-concentration phenanthrene. These findings will guide the use of biochar in the remediation of soils with different PAH pollution levels.
Article
Chemistry, Multidisciplinary
Xinyi Wu, Wenyi Jia, Jing Hu, Xuefeng Yu, Chuanhao Yan, Jason C. White, Junfeng Liu, Yu Yang, Xilong Wang
Summary: This study investigates the use of nano-TiO2 for remediating arsenic and lead-contaminated rice seedlings. The results show that 1000 mg/L of nano-TiO2, particularly with a rutile structure, significantly reduces the accumulation of arsenic and lead in rice plants and increases their retention in the root iron plaque. Additionally, the effectiveness of arsenic uptake inhibition is dependent on the structure of the nano-TiO2, while lead uptake inhibition is relatively consistent.
ENVIRONMENTAL SCIENCE-NANO
(2023)