Article
Engineering, Environmental
Liuliu Li, Wenyue Yan, Baogang Zhang, Han Zhang, Rongyue Geng, Sijia Sun, Xiaohong Guan
Summary: This study demonstrates for the first time that pyrrhotite can successfully bioreduce toxic selenate under anaerobic conditions. Complete removal of selenate was achieved in a continuous column experiment using indigenous microbial consortium and pyrrhotite. The study also revealed the importance of hydrochemistry and hydrodynamics in the performance of selenate removal.
Article
Engineering, Civil
Guillaume Lorette, Mathieu Sebilo, Damien Buquet, Roland Lastennet, Alain Denis, Nicolas Peyraube, Veronique Charriere, Jean-Christophe Studer
Summary: Determining the origins of nitrate is crucial for improving groundwater management in hydrogeological catchments. This study used stable isotopic composition analysis to identify the sources of nitrate in a karst system. The results showed that the upper Jurassic karst confined aquifer and the upper Cretaceous unconfined aquifer have the same nitrate sources. Additionally, the study found that the lower aquifer can be fed by the upper Cretaceous unconfined aquifer, contrary to previous belief. Overall, this work provides important insights for the understanding and management of water quality in karstic hydrogeological catchments.
JOURNAL OF HYDROLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Frank Nkansah-Boadu, Ido Hatam, Susan A. Baldwin
Summary: Biological treatment to remove dissolved selenium from mine-impacted water is often inhibited by nitrate, but microbial consortia enriched from certain locations have shown the ability to simultaneously remove selenium and nitrate. Dominant species with selenate reduction capacity were identified in Orders Enterobacterales and Clostridiales, expressing selenate reductases such as ygfK and narG.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Environmental Sciences
Hongyu Zhang, Xu Han, Guangcai Wang, Hairu Mao, Xianglong Chen, Ling Zhou, Dandan Huang, Fan Zhang, Xin Yan
Summary: This study used self-organizing map (SOM) and principal component analysis (PCA) to characterize the spatial variability and driving factors of shallow groundwater hydrochemistry in Yan'an, Northwest China. The results identified four clusters of groundwater, including heavily oil-contaminated, slightly oil-contaminated, least-polluted, and NO3- contaminated. Oil-related water intrusion and agricultural activities were identified as the main driving factors for groundwater pollution in the area, while water-rock interactions also influenced the chemical composition.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Jannatun Nahar Jannat, Md Sanjid Islam Khan, H. M. Touhidul Islam, Md Saiful Islam, Rahat Khan, Md Abu Bakar Siddique, Memet Varol, Cem Tokatli, Subodh Chandra Pal, Aznarul Islam, Abubakar M. Idris, Guilherme Malafaia, Abu Reza Md Towfiqul Islam
Summary: This study analyzed the quality and contamination levels of groundwater in coastal areas of Bangladesh and India, particularly focusing on nitrate and fluoride. The study identified industrial waste, synthetic pesticides, and agricultural fertilizer as major contributors to nitrate contamination, while evaporite dissolution, carbonate mineral weathering, and ion exchange processes were found to release fluoride into groundwater. The study also revealed that a significant number of groundwater samples exceeded permitted contaminant limits, posing a high non-carcinogenic risk to children in particular.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Ioannis Vrouhakis, Evangelos Tziritis, Andreas Panagopoulos, Georgios Stamatis
Summary: A combined hydrogeochemical and hydrodynamic assessment was conducted in a highly productive agricultural basin in central Greece, revealing the progressive impact of secondary phenomena on groundwater chemistry. Various tools and methods were applied to a comprehensive dataset, with results highlighting the importance of joint tools/methods application in scientific tasks and providing valuable information for sustainable groundwater management.
Article
Environmental Sciences
Jing Jin, Zihe Wang, Yiping Zhao, Huijun Ding, Jing Zhang
Summary: The study found that nitrate contamination in the groundwater of the southern part of the Northern Huangqihai Basin exceeded standards, with potential sources identified as livestock manure, sewage, and NH4 fertilizers.
Article
Environmental Sciences
Zijun Li, Qingchun Yang, Chuan Xie, Xingyu Lu
Summary: This study conducted an extensive hydrochemical investigation in the Subei Lake basin to assess the spatial distribution, source identification, and health risk of groundwater nitrate pollution. The results showed that 23.53% of groundwater samples exceeded the recommended limit for nitrate concentration by the World Health Organization, with agricultural activities identified as the main source. Human health risk assessment indicated that infants and children are more vulnerable to the health risks associated with drinking this groundwater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Marine
Chenzhe Li, Tengfei Fu, Yushan Fu, Zhenyan Wang, Bin Li, Chen Qi, Guangquan Chen, Xingyong Xu, Hongjun Yu
Summary: This study used a novel approach to analyze the hydrochemistry characteristics and health risks of groundwater in the Guangdong coastal areas, considering factors such as rock weathering, seawater intrusion, and anthropogenic inputs. The results showed that the groundwater had a high concentration of total dissolved solids and weakly alkaline quality. Most of the samples were acceptable for drinking, but there were unacceptable risks and higher health hazards for children in certain areas. The study suggests that attention should be paid to groundwater salinization and nitrate pollution when improving groundwater quality and exploring sustainable utilization of groundwater resources.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Tanushree Gupta, Rina Kumari
Summary: Groundwater quality is a major issue in alluvial aquifers undergoing agricultural transformation. Mehsana district in Gujarat, India is an example of an agricultural landscape with seasonal crops and vegetables. The hydrochemical analysis of groundwater samples collected during monsoon and pre-monsoon seasons revealed complex hydrochemical reactions, ion exchange, and silicate weathering. The presence of high levels of sodium, alkaline pH, and bicarbonate promoted fluoride release from minerals, particularly during the monsoon season.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Environmental Sciences
Yunhui Zhang, Yongsheng Dai, Ying Wang, Xun Huang, Yong Xiao, Qiuming Pei
Summary: This study assessed groundwater quality and health risks in the Nanchong area, southwestern China, using statistical analysis, ion correlation, geomodelling analysis, entropy water quality index, and health risk assessment. The results showed that the concentrations of major ions in groundwater were mainly influenced by calcite dissolution and ion exchange, while nitrate concentrations were controlled by agricultural activities. Most groundwater samples were suitable for drinking, but some posed non-carcinogenic health risks for different population groups, with infants being at the highest risk. Targeted measures focusing on improving agricultural activities are needed to reduce nitrate-related health risks in the future.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biodiversity Conservation
Jiutan Liu, Zongjun Gao, Jianguo Feng, Min Wang
Summary: This study investigated the hydrochemical characteristics, quality, and health hazards of groundwater in the Dawen River Basin (DRB). It found that the dominant constituents of groundwater were bicarbonate and calcium ions, and the groundwater was weakly alkaline hard-fresh water. The study also revealed that rock weathering and human activities, particularly agriculture, were the main factors influencing groundwater chemistry. Overall, the groundwater quality in the DRB was relatively good, but long-term consumption or exposure to groundwater posed health risks, especially for children.
ECOLOGICAL INDICATORS
(2023)
Article
Green & Sustainable Science & Technology
Jiutan Liu, Zongjun Gao, Yuqi Zhang, Zengbing Sun, Tianzhu Sun, Haibin Fan, Bin Wu, Mingbo Li, Lili Qian
Summary: Groundwater is an important source of water, but in Weifang, China, high levels of nitrate contamination pose a health risk to residents. The study found that groundwater affected by silicate and carbonate rock weathering, cation exchange, and human activities has high nitrate concentrations, mainly due to agricultural activities. Water quality in Weifang is generally medium, but there are areas with extremely poor water quality, posing health risks, especially for infants and children.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
F. Ortmeyer, K. Volkova, F. Wisotzky, S. Wohnlich, A. Banning
Summary: The agricultural input of NO3- and compliance with drinking water guidelines present challenges for water suppliers, with potential impacts on mineral saturation states and well productivity. Thorough hydrochemical and geochemical investigations are needed to evaluate hydrogeochemical evolution and clogging potential in well fields.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Environmental Sciences
Shou Wang, Jing Chen, Shuxuan Zhang, Xiaoyan Zhang, Dan Chen, Jiao Zhou
Summary: This study assessed the groundwater evolution, quality, and health risks associated with nitrate pollution in the Nansi Lake Basin of North China. The results revealed that nitrate contamination in groundwater exceeded permissible limits and posed significant health risks. The findings emphasized the need for chemical and biological denitrification of groundwater to ensure safe drinking water.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)