Review
Environmental Sciences
Jin Zhang, Chengjun Li, Wenli Tang, Mengjie Wu, Mingying Chen, Huan He, Pei Lei, Huan Zhong
Summary: Wetlands are important areas for studying mercury (Hg) biogeochemistry and have attracted global attention. A literature analysis of 15,813 publications on Hg in wetlands was conducted, revealing the changing focus of research over time. The research priorities for future studies include understanding the factors controlling methylmercury (MeHg) production, demethylation processes, bioaccumulation, and the role of wetlands in Hg circulation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Jiang Xu, Garret D. Bland, Yuan Gu, Hasti Ziaei, Xiaoyue Xiao, Amrika Deonarine, Danny Reible, Paul Bireta, Thomas P. Hoelen, Gregory Lowry
Summary: The study found that marine sediments contained 20-50% of total Hg in the <0.5 µm size fraction, while terrestrial and river sediments only contained 0.5-3.0% in this fraction. X-ray absorption spectroscopy revealed that metacinnabar (beta-HgS) was the main mercury species in marine sediment, while organic Hg-thiol (Hg(SR)(2)) was predominant in terrestrial sediment. Single-particle inductively coupled plasma time-of-flight mass spectrometry analysis indicated that half of the Hg in the <0.5 µm size fraction of marine sediment existed as individual nanoparticles.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yingying Guo, Yuping Xiang, Guangliang Liu, Ying Chen, Yanwei Liu, Maoyong Song, Yanbin Li, Jianbo Shi, Ligang Hu, Yongguang Yin, Yong Cai, Guibin Jiang
Summary: This study investigates the internalization and transformation of HgSNP in the microbial methylator Geobacter sulfurreducens PCA. It was found that microbial uptake of HgSNP is higher than that of the Hg2+-DOM complex. The internalized HgSNP are dissolved to Hg2+ in the cytoplasm, leading to higher methylation of HgSNP and highlighting its importance in MeHg production.
Article
Environmental Sciences
Aming Qin, Shu Ran, Tianrong He, Deliang Yin, Yiyuan Xu
Summary: Soil composition can influence the behavior and bioavailability of soil mercury (Hg) by altering its chemical properties and soil texture.
Article
Engineering, Environmental
Yongjie Wang, Yue Zhang, Yong Sik Ok, Tao Jiang, Peng Liu, Rui Shu, Dingyong Wang, Xinde Cao, Huan Zhong
Summary: Recent studies have shown that biochar impacts sulfur cycling in soils and MeHg-soil binding, which play crucial roles in controlling MeHg phytoavailability. Under anoxic conditions, biochar increases reduced inorganic sulfur in soils, facilitating MeHg binding and reducing MeHg phytoavailability. However, under oxic conditions, the released soil-bound MeHg increases MeHg phytoavailability.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Yang Yang, Yemian Peng, Yibing Ma, Guojun Chen, Fangbai Li, Tongxu Liu
Summary: This study evaluated the phytotoxicity to wheat root elongation in different soils across China and examined the biogeochemical processes of added Cr(VI). The results showed that soil properties, such as pH, organic matter, clay, cation exchange capacity, and amorphous Fe oxides, affected the toxicity of Cr. Wheat root elongation was found to be more sensitive to extracted Cr(VI) than Cr(III) after 105 days of incubation. A kinetic model indicated that pH, clay, and amorphous Fe/Al oxides played key roles in the aging and reduction processes of Cr(VI), while organic matter and cation exchange capacity greatly affected the aging process of Cr(III).
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Shalini Singh, Vipin Kumar, Pratishtha Gupta, Madhurya Ray, Ashok Kumar
Summary: This research experiment investigated the potential of Brevundimonas species IITISM22 to remove mercury using live bacterial biomass at different temperatures. The study found that IITISM22 exhibited the highest mercury absorption at pH 6.5 and a contact time of 4 hours, with kinetics following the pseudo-second-order model. Additionally, the adsorption process was well-defined by the Linear Langmuir isotherm model.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Chongyang Qin, Xiaoyu Xu
Summary: This study investigated the potential for mercury (Hg) methylation in two different aquatic systems. One system, Fourmile Creek (FMC), had a history of Hg pollution from groundwater, while the other, the H02 constructed wetland, only received atmospheric Hg deposition. The study found that FMC had a stronger Hg methylation potential and higher Hg bioavailability compared to the H02 wetland, which was attributed to differences in microbial communities. This study highlights the importance of long-term monitoring and sustainable ecological modifications for Hg-contaminated sites.
ENVIRONMENTAL POLLUTION
(2023)
Review
Biotechnology & Applied Microbiology
Shehla Amin, Sardar Khan, Tasneem Sarwar, Javed Nawab, Muhammad Amjad Khan
Summary: This paper focuses on the contamination of mercury in degraded soil in mining areas, its impact on rice growth, and human health. It reveals that rice grown in damaged areas contain high levels of methylmercury, posing potential risks to human health.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Chemical
Thidarat Wongsawa, Watcharapong Ampronpong, Natthapol Traiwongsa, Ura Pancharoen, Wikorn Punyain, Suphot Phatanasri
Summary: Pure sunflower oil is newly used to extract mercury (Hg(I)) from synthetic water to protect the environment from hazardous metals and promote a benign extraction method. Optimal conditions of influencing parameters have been determined, and the extraction mechanism, reaction order, rate constant, and thermodynamic parameters of Hg(I) extraction have been investigated. Extraction of Hg(I) from other metals in industrial wastewater has also been carried out.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Review
Engineering, Chemical
Peng Dong, Tingna Shao, Yu Zhao, Dong Ji, Yong Yang, Xinhong Zhao, Hongwei Li, Junying Tian, Dongliang Wang, Guixian Li
Summary: The high-efficiency production of xylene/trimethylbenzene from benzene/toluene with methanol is a potential way to optimize the resource structure and promote the development of the petrochemical and coal chemical industry. This paper focuses on the one-step methylation reaction and reviews the mechanism and preparation strategy of high-performance catalysts. It also describes the current research progress and future directions in this field.
Review
Environmental Sciences
Yueqian Chen, Yingying Guo, Yanwei Liu, Yuping Xiang, Guangliang Liu, Qinghua Zhang, Yongguang Yin, Yong Cai, Guibin Jiang
Summary: Mercury and its organic compounds pose significant threats to the environment and human health. Microorganisms play a critical role in the methylation and demethylation of mercury in water and sediments. Bacterial whole-cell biosensors (BWCBs) offer a more accurate and cost-effective approach to assess the bioavailability of mercury compared to traditional methods. This Review provides an overview of the recent advancements in the application of BWCBs for detecting bioavailable mercury and discusses challenges, strategies, and future prospects.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Environmental Sciences
Thi Anh Thu Tran, Quang Toan Dinh, Fei Zhou, Hui Zhai, Mingyue Xue, Zekun Du, Gary S. Banuelos, Dongli Liang
Summary: Selenium fertilizer application is an effective strategy to reduce mercury accumulation in crops and mitigate mercury contamination in soils, but the levels of selenium application need to be controlled to avoid synergistic toxic effects with mercury.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Zheng Dongmei, Li Xinyu, Li Hang, Wang Yuqi, Zheng Meijie, Xu Xiaoxiao
Summary: The study revealed variations in mercury and methylmercury contents in soil under different salinity conditions, showing a correlation between salinity, sulfate-reducing bacteria population, and methylmercury formation. It was found that sulfate-reducing bacteria were present in all salinity conditions and had a significant positive correlation with soil methylmercury content, indicating the importance of sulfate-reducing bacteria in estuarine wetland studies.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Environmental Sciences
I Janeiro-Tato, M. A. Lopez-Anton, D. Baragano, C. Antuna-Nieto, E. Rodriguez, A. Pelaez, J. R. Gallego, M. R. Martinez-Tarazona
Summary: The study found that using carbon foam impregnated with goethite can significantly reduce the availability of Hg in soils, and the proportion of Hg associated with humic acids determines the mobility and availability of Hg. The presence of acidic groups on the surface of the foam can enhance the binding of metal cations, improving Fe immobilization.
ENVIRONMENTAL SCIENCES EUROPE
(2021)
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)