Article
Engineering, Environmental
Charles D. Spellman, Peter M. Smyntek, Charles A. Cravotta, Travis L. Tasker, William H. J. Strosnider
Summary: Municipal wastewater (MWW) and mine drainage (MD) are common sources of freshwater pollution in mining regions. Mixing MWW and MD can improve downstream water quality by reducing nutrient and metal concentrations. A study conducted in central Pennsylvania showed that the mixing of MWW, MD, and upstream water significantly decreased phosphate, aluminum, and iron concentrations in the stream. Geochemical models indicated that precipitation and adsorption were the primary mechanisms for phosphate attenuation. The findings suggest that in-stream mixing of MD with untreated or secondarily treated MWW may have a significant impact on downstream transport of pollutants in mining regions.
Article
Environmental Sciences
T. Vamsi Nagaraju, B. M. Sunil, Babloo Chaudhary, Ch Durga Prasad, R. Gobinath
Summary: The water quality analysis of aquaculture waters in the western delta region of Andhra Pradesh showed that approximately 78% of the water samples were unsuitable for drinking and domestic use. The ammonia content in aquaculture water exceeded the acceptable limit set by WHO. A prediction model using the pelican optimization algorithm coupled with discrete wavelet analysis was found to be reliable in predicting ammonia levels in aquaculture ponds.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Kevin W. King, Brittany R. Hanrahan, Gregory A. LaBarge, Jedediah H. Stinner, Kathryne Rumora
Summary: Despite the focus on nutrient source, especially organic sources, in the re-eutrophication of Lake Erie, limited data exists on the comparison of subsurface tile drainage water quality between organic and commercial sources in crop production systems. This study assesses the losses of dissolved reactive phosphorus (DRP), total phosphorus (TP), nitrate-nitrogen (NO3--N), and total nitrogen (TN) in tile drainage discharge after applying liquid dairy manure and mono-ammonium phosphate (MAP) in northwest Ohio. The results show that there were no significant differences in drainage discharge volumes or TP loads between the control and impact sites, but there were statistically significant increases in mean daily DRP, NO3--N, and TN loads from the dairy manure site. These findings have implications for nutrient management stewardship and further research on different soil characteristics and livestock manure nutrients.
JOURNAL OF ENVIRONMENTAL QUALITY
(2023)
Article
Environmental Sciences
Peter A. U. Staehr, Sanjina U. Staehr, Denise Tonetta, Signe Hogslund, Mette Moller Nielsen
Summary: The study found that boulder reefs in the Limfjorden do not have a positive impact on the oxygen dynamics of the ecosystem. In 2018, extreme temperatures and higher nutrient levels resulted in a significant increase in benthic ER rates, leading to net heterotrophy in 2018 compared to net autotrophy in 2017.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Water Resources
Malgorzata Wojtkowska, Damian Bojanowski
Summary: Phosphorus is a key nutrient compound for phytoplankton growth, and its concentration in water bodies like Sluzewiecki Stream and nearby lakes was found to determine the intensity of trophic processes. High concentrations of phosphorus and nitrogen were observed, indicating a serious threat of eutrophication for the analyzed surface waters as shown by calculated trophic state indexes.
APPLIED WATER SCIENCE
(2021)
Article
Soil Science
Nerilde Favaretto, Verediana Fernanda Cherobim, Fabiana de Medeiros Silveira, Adriana Timofiecsyk, Rebert Skalitz, Gabriel Barth, Volnei Pauletti, Jeferson Dieckow, Fabiane Machado Vezzani
Summary: The long-term application of liquid dairy manure (LDM) had varying effects on runoff, sediment, and nutrient losses in two Oxisols with different textures. Increasing the LDM rate up to 120 m(3) ha(-1) year(-1) was found to be effective in reducing losses and runoff, especially during the summer season and for rainfall events <35 mm day(-1). Complementary practices should be adopted to prevent surface runoff from reaching aquatic systems.
Article
Environmental Sciences
Miao Liu, Li Wang, Fangdao Qiu
Summary: This study developed a two-step model to retrieve dissolved oxygen concentration in Lake Taihu using MODIS Aqua images. By utilizing machine learning methods, dissolved oxygen can be estimated from parameters such as water temperature, water clarity, and chlorophyll-a. The research revealed spatial and temporal variations in dissolved oxygen in Lake Taihu, which are influenced by factors such as water quality and air temperature.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Adriana Tuduri, Laura Perez Becona, Natalia Venturini, Lorena Rodriguez-Gallego, Felipe Garcia-Rodriguez, Leticia Gonzalez, Carolina Lescano, Soledad Costa, Laura del Puerto, Leandro Bergamino
Summary: The study found that water column trophic indicators reflect short-term water quality changes, while benthic trophic indicators reflect long-term trends. The research also showed that eutrophic conditions in sediment and transitional water bodies are associated with decreasing salinity and increasing total nutrients.
MARINE POLLUTION BULLETIN
(2021)
Article
Engineering, Environmental
Douglas R. Tait, Isaac R. Santos, Sebastien Lamontagne, James Z. Sippo, Ashley Mcmahon, Luke C. Jeffrey, Damien T. Maher
Summary: Rivers are not the only source of nutrients for the Great Barrier Reef; submarine groundwater discharge also plays a significant role. However, internal recycling processes still dominate the nutrient budget, suggesting the need for a shift in management focus to protect the reef from excess nutrients.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Rebecca R. Murphy, Jennifer Keisman, Jon Harcum, Renee R. Karrh, Mike Lane, Elgin S. Perry, Qian Zhang
Summary: The study finds that nutrient loads in Chesapeake Bay are mostly improving after accounting for variations in freshwater flow, with reductions from nearby point sources slightly more effective in explaining estuarine nutrient trends than reductions from rivers. Both types of loads from multiple locations across the watershed are together necessary and responsible for the improving estuarine nutrient conditions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Kumuduni Niroshika Palansooriya, Sok Kim, Avanthi Deshani Igalavithana, Yohey Hashimoto, Yoon-E Choi, Raj Mukhopadhyay, Binoy Sarkar, Yong Sik Ok
Summary: This study fabricated Fe(III) loaded chitosan-biochar composite fibers for adsorptive removal of phosphate from water, demonstrating their high adsorption capacities. The adsorption process followed different kinetic models, indicating the superior adsorption efficiency of the composite fibers.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Food Science & Technology
Morgane Le Moal, Alexandrine Pannard, Luc Brient, Benjamin Richard, Marion Chorin, Emilien Mineaud, Claudia Wiegand
Summary: Cyanobacterial blooms in eutrophic freshwater pose a global threat to ecosystems, human health, and the economy, requiring reliable predictions to support decision-making. Environmental drivers such as climate and anthropogenic pressures influence the development of cyanobacteria, with a focus on reducing phosphorus load to suppress blooms. High interannual variability in cyanobacterial development highlights the importance of long-term data series and the potential for a new equilibrium due to climatic pressure and nitrogen limitation.
Article
Engineering, Civil
Shervin Jamshidi, Somaye Imani, Majid Delavar
Summary: This research highlights a deficiency in grey water footprint (GWF) accounting and proposes an integrated methodology to consider regional environmental concerns in the water footprint (WF) of agricultural productions. This methodology includes basin simulation, WF assessment, and a modification to account for embedded freshwater required for environmental enhancement. The approach is verified in Zrebar Lake basin, resulting in increased average WFs of rain-fed and irrigated crops, as well as an increased GWF-to-WF ratio and water pollution level. This approach enables considering the impacts of pollution loads and ecological impairment in product WFs.
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Leslie J. Robbins, Mojtaba Fakhraee, Albertus J. B. Smith, Brendan A. Bishop, Elizabeth D. Swanner, Caroline L. Peacock, Chang -Le Wang, Noah J. Planavsky, Christopher T. Reinhard, Sean A. Crowe, Timothy W. Lyons
Summary: Oxygenic photosynthesis is crucial for the existence of complex life on Earth, but determining its emergence has been challenging. Sedimentary manganese enrichments have been considered as evidence, but their relation to oxygenation has been debated. This review argues that the presence of shallow oxygenated seawater is necessary for significant sedimentary Mn enrichments, and suggests that oxygenic photosynthesis emerged hundreds of millions of years before irreversible atmospheric oxygenation.
EARTH-SCIENCE REVIEWS
(2023)
Article
Biodiversity Conservation
Chi Zhang, Xizhi Nong, Dongguo Shao, Hua Zhong, Yuming Shang, Jiankui Liang
Summary: This study focused on the water environment risk of the South-to-North Water Transfer Project of China, and found a significant positive correlation between water temperature and algal cell density. The overall water quality of the project was good, with the algal cell density kept at an average level of 106 cells/L, higher in summer and autumn than in spring and winter.
ECOLOGICAL INDICATORS
(2021)
Article
Engineering, Environmental
Weizhao Yin, Jing Ai, Li-Zhi Huang, Dominique J. Tobler, Hans Christian B. Hansen
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2018)
Article
Engineering, Environmental
Jing Ai, Weizhao Yin, Hans Christian B. Hansen
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2019)
Article
Environmental Sciences
Gry Lyngsie, Konstantina Katika, Ida Lykke Fabricius, Hans Christian Bruun Hansen, Ole Kragholm Borggaard
Article
Engineering, Environmental
Jing Ai, Hui Ma, Dominique J. Tobler, Marco C. Mangayayam, Changyong Lu, Frans W. J. van den Berg, Weizhao Yin, Hans Christian Bruun Hansen
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Environmental Sciences
Natasa Skrbic, Ann-Katrin Pedersen, Sarah C. B. Christensen, Hans Christian Bruun Hansen, Lars Holm Rasmussen
Article
Environmental Sciences
Daniel B. Garcia-Jorgensen, Efstathios Diamantopoulos, Vaidotas Kisielius, Mette Rosenfjeld, Lars H. Rasmussen, Bjarne W. Strobel, Hans Chr. B. Hansen
Summary: The production of PTA in bracken is proportional to biomass growth, with concentrations in soil solution exceeding levels known to pose a risk to human health. Rain events wash off a significant portion of PTA present in the canopy, and once in the soil, PTA dissipates rapidly with observed degradation rates showing a tenfold decrease with soil depths increasing from top soil to 25 cm soil depth.
ENVIRONMENTAL SCIENCES EUROPE
(2021)
Article
Agriculture, Multidisciplinary
Lijuan Huang, Hans C. B. Hansen, Xiaosong Yang, Zijian Xie, Songyan Li, Mei Yang, Xiaomeng Liang, Zhengyi Hu
Summary: The study showed that low sulfur (S) application resulted in higher seed-Cd concentration, while high sulfur levels inhibited this phenomenon. In high-Cd soil, there were antagonistic effects between sulfur and Cd, leading to decreased seed yield.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Chemistry, Analytical
Vaidotas Kisielius, Mikkel Drejer, Jimmy Kjellerup Dornhoff, Natasa Skrbic Mrkajic, Dan Nybro Lindqvist, Hans Christian Bruun Hansen, Lars Holm Rasmussen
Summary: This study reports the presence of illudane glycosides PTE, CAU, and PTA in bracken ferns for the first time. These glycosides degrade at similar rates under different conditions, with water origin influencing their degradation rates. The existing first-order model for PTA hydrolysis can predict the degradation rates of all the three glycosides. The potential risk of PTE and CAU in bracken ferns may have been underestimated in previous assessments.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2022)
Article
Environmental Sciences
Xueping Wang, Lingqing Wang, Qian Zhang, Tao Liang, Jing Li, Hans Chr Bruun Hansen, Sabry M. Shaheen, Vasileios Antoniadis, Nanthi Bolan, Joerg Rinklebe
Summary: The impact of land use type on the content and risk of potentially toxic elements in the soils of the Qinghai-Tibet Plateau is significant. Anthropogenic activities, such as industrial discharge and agricultural inputs, have greatly influenced the PTE contents and risk. This study provides important insights into the ecological and human health risks associated with land use in this region.
ENVIRONMENTAL POLLUTION
(2022)
Article
Biotechnology & Applied Microbiology
Jonathan H. Lindhardt, Changyong Lu, Peter E. Holm, Hans Christian B. Hansen
Summary: This study investigated the abiotic debromination of toxic contaminants in anaerobic soil and groundwater using a layered iron(II)-iron(III) hydroxide with biochars as electron mediators. The results showed that biochars were efficient catalysts for the reductive debromination of Tribromoethylene (TrBE), dibromoethylenes (DBEs), and 1,2-dibromoethane (DBA). The debromination reactions exhibited pseudo-first-order kinetics and were faster in deionized water compared to moderately hard groundwater. Post-pyrolysis activation with CO2 further enhanced the catalytic performance of the biochars.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Environmental Sciences
Jawameer R. Hama, Daniel Bernardo Garcia Jorgensen, Efstathios Diamantopoulos, Thomas D. Bucheli, Hans Chr Bruun Hansen, Bjarne W. Strobel
Summary: This study investigated the presence of alkaloids in lupin plants, soil, and water in cultivated areas. The findings suggest that alkaloids are transported preferentially through macropores and contribute to surface water contamination.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Amalie Thit, Sara Nicoline Gronlund, Louise Lynn Trudso, Benni Winding Hansen, Simon David Herzog, Soren Laurentius Nielsen, Nikoline Garner Oturai, Dorthe Posselt, Praveen Kumar Ramasamy, Monica Hamann Sandgaard, Kristian Syberg, Henriette Selck, Gry Lyngsie
Summary: This study investigated the interactions, transport, and fundamental concepts of particles and their associated co-transported matter (CTM) in the aquatic environment. The researchers emphasize the importance of understanding the transport of particle-associated CTM and the assumptions in generic models. They also highlight the need for interdisciplinary collaborations and a consistent terminology to foster progress in research on anthropogenic carrier particles.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Jing Ai, Dominique J. Tobler, Cecilie Gry Duncan-Jones, Maria Eckardt Manniche, Kirstine Evald Andersson, Hans Christian B. Hansen
Summary: This study found that HCO3- has the greatest impact on the dechlorination rates of CE in the reaction process of GR-BC, and the presence of silicic acid leads to varying degrees of reduction in reaction rate. Contaminated groundwater matrices significantly decrease the reactivity of the GR-BC composite.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2021)
Meeting Abstract
Agriculture, Dairy & Animal Science
E. Vargas-Bello-Perez, S. Cruz-Morales, R. Dhakal, H. H. Hansen
JOURNAL OF DAIRY SCIENCE
(2020)
Article
Chemistry, Analytical
Xiaogang Jiang, Bjarne W. Strobel, Nina Cedergreen, Yi Cao, Hans Chr. Bruun Hansen
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2019)
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.