Article
Environmental Sciences
Xuan Gao, Kun Yang, Daohui Lin
Summary: The presence of extracellular polymeric substance (EPS) affects the interfacial interaction between titanium dioxide nanoparticles (nTiO(2)) and algae, promoting surface accumulation of nanoparticles on algal cells while limiting their internalization. The different endocytosis pathways for anatase nTiO(2) and rutile nTiO(2) entering algal cells may be attributed to their affinities to mediating receptors. EPS removal activates mediating pathways, facilitating more nanoparticle internalization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biology
Marina Santos, Catarina C. Pacheco, Lun Yao, Elton P. Hudson, Paula Tamagnini
Summary: By repressing three putative kpsM homologues using the CRISPRi multiplex system, this study confirmed the effectiveness of CRISPRi in unraveling complex EPS biosynthetic pathways in cyanobacteria.
Article
Biochemistry & Molecular Biology
Mei Zhi, Yiying Zhao, Xinyu Zeng, Naga Raju Maddela, Yeyuan Xiao, Yucheng Chen, Ram Prasad, Zhongbo Zhou
Summary: This study investigated the composition of extracellular polymeric substances (EPS), microbial profiles, and functional genes of algae-bacteria aggregates in algae-bacteria symbiotic wastewater treatment. The results showed that solid retention times (SRTs) greatly influenced the nitrogen transformation and the formation and morphological structure of algae-bacteria aggregates. The study also revealed the importance of EPS structures and filamentous cyanobacteria in driving the aggregation of algae and bacteria.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
Tianran Ye, Ao Yang, Yulai Wang, Na Song, Ping Wang, Huacheng Xu
Summary: This study investigates the response of extracellular polymeric substances (EPS) in Microcystis aeruginosa to microplastics (MPs). The results show that MPs can inhibit the growth of Microcystis, but enhance the secretion of EPS. The organic composition in EPS varies differently in response to MP exposure, leading to changes in the dominant components and potential ecotoxicological risk. These findings contribute to our understanding of the interaction between phytoplankton and MPs in aquatic environments.
ENVIRONMENTAL POLLUTION
(2022)
Review
Chemistry, Multidisciplinary
Fernando Bolivar-Galiano, Oana Adriana Cuzman, Clara Abad-Ruiz, Pedro Sanchez-Castillo
Summary: This work introduces a helpful tool for dealing with the biodiversity of monumental fountains and other wet lithotype surfaces, emphasizing the importance of phototrophic microorganisms in fountains and their impact on stone materials. The paper summarizes research on phototrophic biodiversity and provides simplified identification methods for professionals in the field of stone conservation.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
You Ma, Tian -Yu Li, Han Meng, Guo-Xiang Wang, Li-Min Zhang, Guo-Zheng Jia, Jie Ma, Yan Xiao, Wei-Hua Li, Wen-Ming Xie
Summary: This study investigated the adsorption of the antibiotic trimethoprim (TMP) by extracellular polymeric substances (EPS) in anaerobic activated sludge. The results showed that loosely-bound EPS had a positive effect on TMP adsorption, while tightly-bound EPS had a negative effect.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Qing-Long Fu, Chun-Jie Zhong, Ting Qing, Zi-Yan Du, Cheng-Cheng-Li, Jun-Jie Fei, Willie J. G. M. Peijnenburg
Summary: The study found that the biological impacts of metallic Ag-NPs and silver sulfide nanparticles (Ag2S-NPs) depend on their form and are highly influenced by microbial EPS. Compared to Ag-NPs, Ag2S-NPs have less impact on plants, while Bacillus subtilis EPS significantly alleviates the phytotoxicity of Ag-NPs.
Article
Geography, Physical
Laurenz Schroer, Tim De Kock, Sebastiaan Godts, Nico Boon, Veerle Cnudde
Summary: Water affects the susceptibility of stone to alteration through physical, chemical and biological weathering. The properties of the stone determine water transport and retention, but biofilms and extracellular polymeric substances may also alter the water-stone relationship.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geochemistry & Geophysics
Ming Zhang, Caroline L. Peacock, Peng Cai, Ke-Qing Xiao, Chenchen Qu, Yichao Wu, Qiaoyun Huang
Summary: Recent research has shown that microbially-derived compounds, particularly extracellular polymeric substances (EPS), play a significant role in the soil organic matter pool. The interaction between EPS and soil minerals affects the sorption and selective retention of EPS constituents. The study investigates the EPS association pathways with ferrihydrite and their impact on the mobility and fate of microbially-derived organic matter in soil environments.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Xiaoying Liu, Jie Liu, Dongkun Deng, Renjie Li, Chao Guo, Jinxia Ma, Ming Chen
Summary: The study revealed a positive correlation between EPS content and sludge granulation, with increased protein concentration facilitating microbial aggregation and sludge granulation. Environmental factors affect the properties of EPS, with different types of sludge generating varying levels of EPS and protein concentrations.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Tao He, Jing-Qiu Hua, Rong-Ping Chen, Lei Yu
Summary: This study explored the adsorption capacity of Klebsiella oxytoca, a dye-degrading and EPS-producing strain, to methylene blue. The results showed that EPS played a significant role in the adsorption of MB dye.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Agricultural Engineering
Pengfei Wan, Ying Liu, Quandi Zhang, Li Jiang, Heping Chen, Wenzhou Lv
Summary: Candida Tropicalis was used to improve the dewaterability of activated sludge (AS) by degrading EPS in AS, resulting in a decrease in protein, polysaccharide, and hydrophilic amino acids in EPS. The yeast degraded macromolecular organics into smaller molecular ones and direct addition of yeast to AS was more effective in EPS degradation. Addition of 0.75 g/L of wet yeast cells and 24 h of aeration enhanced the dewaterability of AS with a reduction in CST and MLSS. After 30 days of operation, lab-scale continuous SBRs reduced CST and MLSS of AS. FTIR spectroscopy showed a decrease in hydrophilic functional groups. This study presents a new approach for in-situ reduction of AS in wastewater treatment plants.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Monika Priyadarshanee, Surajit Das, Vandana
Summary: Extracellular polymeric substances (EPS) are highly hydrated matrices produced by bacteria, containing various polymers such as polysaccharides, proteins, lipids, and DNA. EPS contributes to physical stability and nutrition acquisition for bacteria. Specific glycosyltransferases, polymerase, and transporter proteins encoded by operons regulate the biosynthesis of different EPS in bacteria. EPS can interact with environmental pollutants through functional groups, such as carbonyl, hydroxyl, phosphoryl, and amide, and bind pollutants through hydrophobic interactions and coordinate bonds. EPS can enhance the degradation of organic compounds and bind heavy metals via complexation, surface adsorption, precipitation, and ion exchange mechanisms. The biodegradability and nontoxicity of EPS make it a promising biopolymer for environmental pollutant decontamination.
Review
Geosciences, Multidisciplinary
Zhirui Deng, Dong Huang, Qing He, Claire Chassagne
Summary: Sediment is widely found in rivers, coasts, and seas, playing a crucial role in ecosystems. Suspended mineral sediment can affect microorganisms and plants by reducing light penetration or binding to organic matter. Biological processes can influence the physical and chemical properties of sediment particles and their adhesion. Environmental conditions also impact the biological activity, resulting in complex relationships between physical, chemical, and biological factors. This article summarizes the latest research on sediment flocculation, focusing on the role of organic matter. The goal is to provide a comprehensive understanding of bio-sediment dynamics and explore future research questions.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Environmental Sciences
You Ma, Pei-Kun Yuan, Yu Wu, Han Meng, Guo-Xiang Wang, Wen-Ming Xie, Li-Min Zhang, Jie Ma, Yan Xiao
Summary: This study investigated the role of main components of extracellular polymeric substances (EPS) in antibiotic adsorption through enzymatic treatment of activated sludge. The results showed that proteinase K and alpha-amylase can efficiently hydrolyze the proteins and polysaccharides of EPS, significantly enhancing the adsorption capacity of activated sludge for antibiotics. A multivariable linear regression model was successfully developed to quantify the impact of EPS components on antibiotic adsorption.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
D. Vazquez-Nion, B. Silva, B. Prieto
SCIENCE OF THE TOTAL ENVIRONMENT
(2018)
Article
Biotechnology & Applied Microbiology
B. Prieto, D. Vazquez-Nion, B. Silva, P. Sanmartin
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2018)
Article
Construction & Building Technology
Daniel Vazquez-Nion, Federica Troiano, Patricia Sanmartin, Chiara Valagussa, Francesca Cappitelli, Beatriz Prieto
MATERIALS AND STRUCTURES
(2018)
Article
Materials Science, Multidisciplinary
Patricia Sanmartin, Jorge Sanjurjo-Sanchez, Beatriz Prieto
Article
Materials Science, Multidisciplinary
Chiara Genova, Elsa Fuentes, Patricia Sanmartin, Gabriele Favero, Beatriz Prieto
Article
Chemistry, Multidisciplinary
Elsa Fuentes, Rafael Carballeira, Beatriz Prieto
Summary: The study characterized the microbial consortium forming biofilms on historical rural granite buildings for the first time, revealing differences compared to urban granite buildings, especially in terms of cyanobacteria and lichenized fungi abundance. Exposure and orientation were identified as important factors influencing the diversity and abundance of microorganisms on walls, with northern orientation favoring a higher diversity of fungi and green algae, and west orientation determining the abundance of lichenized fungi.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Beatriz Prieto, Patricia Sanmartin, Javier Cancelo-Gonzalez, Lucia Torres, Benita Silva
Summary: A series of studies over the past 20 years investigated the potential alterations caused by herbicide treatments on the construction materials of the Roman wall of Lugo, a UNESCO World Heritage site in NW Spain. Results showed that glyphosate and physical treatments triggered changes in clay minerals in the schists, while oxyfluorfen herbicide led to an increase in chloride, nitrate, and sulfate contents of granite. The most recent study revealed a perceptible increase in lightness and a reduction in the yellow component after the application of Thymus zygis Loefl. ex L. essential oil to granite.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Elsa Fuentes, Diana Perez-Velon, Beatriz Prieto
Summary: This study investigates the effects of UV-B radiation on biofilms colonising heritage monuments. The research found that high levels of UV-B radiation can alter the growth, physiological state, and composition of surface biofilms, with cyanobacteria showing more resistance to UV-B radiation.
ENVIRONMENTAL RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Chiara Genova, Elsa Fuentes, Gabriele Favero, Beatriz Prieto
Summary: This study evaluated the cleaning and biocidal potential of natural derivatives, such as essential oils and their active principles, on the growth of different natural biofilms on a granite wall. The results showed that these natural derivatives can be used as alternatives to classical biocides. The combination of Origanum vulgare essential oil with other compounds, due to the majority presence of carvacrol, proved to be one of the most effective treatments. The effectiveness of the treatments varied depending on the biofilm and its ability to adhere to the substrate.
Article
Materials Science, Multidisciplinary
Daniel Vazquez-Nion, Elsa Fuentes, Beatriz Prieto
Article
Humanities, Multidisciplinary
Patricia Sanmartin, Beatriz Prieto
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)