Article
Geosciences, Multidisciplinary
McKenzie A. Kuhn, Lauren M. Thompson, Johanna C. Winder, Lucas P. P. Braga, Andrew J. Tanentzap, David Bastviken, David Olefeldt
Summary: The study found that with climate warming, peatland lakes in northern regions shifted from CO2 emissions to absorption, driven by increased hydrological connectivity and nutrient availability, while methane emissions increased 8-fold in warmer regions, correlated with water temperature and shifts in microbial communities.
Article
Environmental Sciences
Jesse F. Abrams, Chris Huntingford, Mark S. Williamson, David I. Armstrong McKay, Chris A. Boulton, Joshua E. Buxton, Boris Sakschewski, Sina Loriani, Caroline Zimm, Ricarda Winkelmann, Timothy M. Lenton
Summary: This study investigates the response of the planet under fixed concentration commitments, with a focus on assessing the likelihood of exceeding temperature thresholds that trigger climate tipping points. The research finds that if today's radiative forcing is maintained until achieving equilibrium global warming, the likelihood of crossing the 1.5 degrees Celsius and 2.0 degrees Celsius thresholds is 83% and 55% respectively.
Article
Engineering, Environmental
Ralf C. H. Aben, Mandy Velthuis, Garabet Kazanjian, Thijs Frenken, Edwin T. H. M. Peeters, Dedmer B. Van de Waal, Sabine Hilt, Lisette N. de Senerpont Domis, Leon P. M. Lamers, Sarian Kosten
Summary: This study demonstrates that the effect of experimental warming on greenhouse gas (GHG) fluxes differs depending on the dominance of different functional plant types in inland waters. Specifically, the response to warming was strongest for free-floating plants and lowest for submerged plants. Importantly, the anticipated shift from submerged plants to algae or free-floating plants with warming may increase total GHG emissions from shallow waters, representing a positive climate feedback that has been overlooked. Management strategies aimed at promoting submerged plant dominance can significantly mitigate GHG emissions.
Article
Chemistry, Multidisciplinary
Jin-Yong Kim, Sang-Hyeok Kim, Chan Young Park, Il-Hyun Baek, Jong Tak Jang, Jeong Won Kang, Sung-Chan Nam
Summary: By impregnating Rh and Ru as catalysts to SrFeO3-delta, efficient CO2 decomposition at low temperatures and increased CO production were achieved. The precious metal catalysts showed a spillover effect, leading to three times higher CO concentration. The study demonstrated the potential for reducing greenhouse gas emissions through improved CO2 decomposition and CO production processes.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Environmental Sciences
Jens Terhaar, Thomas L. Frolicher, Mathias T. Aschwanden, Pierre Friedlingstein, Fortunat Joos
Summary: This study proposes an adaptive approach based on past observations to quantify global emissions reductions and achieve temperature targets, demonstrating its robustness against uncertainties.
NATURE CLIMATE CHANGE
(2022)
Article
Engineering, Environmental
Maciej Bartosiewicz, Roxane Maranger, Anna Przytulska, Isabelle Laurion
Summary: This study evaluated the impact of meteorological conditions on greenhouse gas inventories in eutrophic lakes, revealing a significant effect of atmospheric heatwaves on greenhouse gas production, particularly during cyanobacterial blooms in 2012. The research findings suggest a novel interplay between climate change effects on lake hydrodynamics, impacting both bloom characteristics and greenhouse gas production in shallow eutrophic lakes.
Article
Environmental Sciences
Jinglan Cui, Stephan Glatzel, Viktor J. Bruckman, Baozhan Wang, Derrick Y. F. Lai
Summary: Biochar application in temperate forest soil exerts a positive effect on soil greenhouse gas production and microbial community, leading to improved soil fertility and carbon sequestration potential over the long term. The study also suggests that biochar has the potential to mitigate climate change impacts by increasing soil carbon content and enhancing soil physico-chemical properties under a warmer environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xia Wang, Hai-Bo Hu, Xiang Zheng, Wen-Bin Deng, Jian-Yu Chen, Shuai Zhang, Can Cheng
Summary: The impact of global climate change on greenhouse gas emissions from terrestrial soil is significant, but the response varies among different ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Karina Yew-Hoong Gin, Zhi Yang Sim, Kwan Chien Goh, Jerome Wai Kit Kok, Shu Harn Te, Ngoc Han Tran, Wenxuan Li, Yiliang He
Summary: Picocyanobacteria are small cyanobacteria found in freshwater environments worldwide, known to cause harmful algal blooms. This study discovered that Synechococcus sp. can produce toxins, raising concerns about its toxicity in freshwater systems globally.
Article
Environmental Sciences
Rachel M. Wilson, Moira A. Hough, Brittany A. Verbeke, Suzanne B. Hodgkins, Jeff P. Chanton, Scott D. Saleska, Virginia Rich, Malak M. Tfaily, Gene Tyson, Matthew B. Sullivan, Eoin Brodie, William J. Riley, Ben Woodcroft, Carmody McCalley, Sky C. Dominguez, Patrick M. Crill, Ruth K. Varner, Steve Frolking, William T. Cooper
Summary: This study investigates the relationship between plant tissue chemistry and soil organic matter (SOM) in an Arctic peatland, and its impact on carbon emissions. The results show that the quality of organic matter differs between different plant species and is influenced by vegetation shifts and moisture levels. The findings highlight the importance of vegetation changes in peatlands in controlling carbon emissions under climate change.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Chan Guo, Xufei Liu, Xuefei He
Summary: The study collected 174 studies from 16 countries to determine appropriate nitrogen fertilization rates for enhancing crop yield while reducing greenhouse gas emissions. Results showed positive effects on crop yield and negative effects on greenhouse gas intensity, with recommendations for specific application strategies in different regions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Arlete S. Barneze, Jeanette Whitaker, Niall P. McNamara, Nicholas J. Ostle
Summary: The fluxes of greenhouse gases (GHG) from grasslands are influenced by climate warming and agricultural management. This study investigated the individual and interactive effects of warming, nitrogen fertiliser, and cutting treatments on plant-soil properties and GHG fluxes in a UK grassland. The results showed that there were no interactive effects on plant productivity, but there were interactive effects on GHG fluxes. In addition, the study identified the factors that explain the variances in CO2, N2O, and CH4 fluxes. Overall, this research highlights the importance of considering the interactions between climate and management in determining grassland GHG fluxes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Xinyu Li, Shushi Peng, Yi Xi, R. Iestyn Woolway, Gang Liu
Summary: The excess lake surface warming during ice-off and ice-on month due to earlier ice loss and later ice formation across the Northern Hemisphere has been shown. The contribution of long-term variations in lake ice seasonality to surface water temperature trends has been investigated, and an 8-day advancement in the average timing of ice break-up has been found to play a predominant role in the excess warming. The projected future alterations in lake ice phenology may further amplify the excess lake warming.
NATURE COMMUNICATIONS
(2022)
Article
Biotechnology & Applied Microbiology
Ranielle Daiana dos Santos Silva, Mathias Ahii Chia, Vanessa Virginia Barbosa, Juliana dos Santos Severiano, Jose Etham de Lucena Barbosa
Summary: The eutrophication of aquatic ecosystems and the rise in global temperature have increased the occurrence of harmful cyanobacterial blooms. This study investigated the effects of nitrogen, phosphorus, and temperature on the growth and toxin production of R. raciborskii. The results suggest that nutrient and temperature variations promote the proliferation of R. raciborskii, but it is still unclear whether elevated temperatures could reduce the toxicity of STX-producing strains.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Engineering, Environmental
Chenrun Jiang, Sibo Zhang, Junfeng Wang, Xinghui Xia
Summary: The influence of light irradiance on N2O emissions in river systems was studied. It was found that light inhibited N2O emissions in the ammonium system and significantly reduced N2O emissions in the nitrate system. Higher light conditions in the nitrate system led to increased N2O reduction and decreased N2O production, resulting in lower N2O emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Xingcheng Yan, Xiaoguang Xu, Ming Ji, Zhongqian Zhang, Mingyue Wang, Songjun Wu, Guoxiang Wang, Chi Zhang, Huichao Liu
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Environmental Sciences
Songjun Wu, Yanping Zhao, Yuanyuan Chen, Xiumei Dong, Mingyue Wang, Guoxiang Wang
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Environmental Sciences
Xingcheng Yan, Songjun Wu, Jie Xu, Xiaoguang Xu, Guoxiang Wang
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2020)
Article
Environmental Sciences
Yanping Zhao, Songjun Wu, Miaotong Yu, Zhongqian Zhang, Xuan Wang, Siyuan Zhang, Guoxiang Wang
Summary: This study investigated seasonal variations in sediment types from different areas in a eutrophic lake in China, Lake Taihu. The findings suggest that high temperature in summer and algae accumulation facilitate reduction processes in freshwater lake sediments. Strong sulfate reduction was observed in algae accumulated areas, affecting iron cycling and phosphorus mobility, and potentially influencing eutrophication in freshwater lakes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Civil
Songjun Wu, Doerthe Tetzlaff, Tobias Goldhammer, Chris Soulsby
Summary: Climate change and riparian management are significant drivers of hydrological change, impacting nutrient fluxes in lowland streams. Long-term assessment in a mixed land use catchment in northern Germany revealed how climatic variability influences hydrological dynamics, with discharge and groundwater levels closely linked to changes in temperature and rainfall. The study also highlighted the role of beaver dams in moderating flow regimes and facilitating groundwater recharge, as well as the complex dynamics of nutrient concentrations and fluxes in stream water systems.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Songjun Wu, Doerthe Tetzlaff, Xiaoqiang Yang, Chris Soulsby
Summary: This study applied a grid-based model to simulate the dynamics of nitrate in a catchment near Berlin. The results showed that landscape characteristics, hydroclimatic variability, vegetation cover, and fertilizer inputs were the main controlling factors of spatial and temporal patterns of water and nitrate fluxes. Wetness condition and denitrification also played important roles in nitrate dynamics. The restoration of riparian wetlands had a modest impact on reducing nitrate export. The model mHM-Nitrate provided reliable simulations and differentiated the key controlling factors, contributing to evidence-based management practices under climate change.
WATER RESOURCES RESEARCH
(2022)
Article
Engineering, Environmental
Xingcheng Yan, Vincent Thieu, Songjun Wu, Josette Garnier
Summary: The increase in global reservoir construction has significant impacts on downstream rivers, affecting water quality by increasing dissolved organic carbon (DOC) and biodegradable DOC concentrations, while decreasing dissolved silica (DSi) concentrations. Additionally, reservoirs decrease downstream riverine pCO(2) and enhance the gas transfer coefficient of CO2 in downstream rivers. These findings highlight the importance of considering biogeochemical and hydrological characteristics when assessing the impacts of reservoirs on downstream rivers.
Article
Engineering, Environmental
Songjun Wu, Doerthe Tetzlaff, Tobias Goldhammer, Jonas Freymueller, Chris Soulsby
Summary: In-stream water quality in riparian wetlands is influenced by both hydrological and biogeochemical controls. This study used an isotope-based mixing model to differentiate the dominance of these controls. The model revealed that groundwater inflows were predominant most of the time, but lateral inflows and channel leakage became more important in mid-summer. The model also predicted concentrations of nutrients and ions, allowing the identification of hydrologically-controlled, biogeochemically-controlled, and dual-controlled parameters. This method provides a robust tool for understanding the relative strengths of hydrological and biogeochemical controls in water quality.
Article
Environmental Sciences
Songjun Wu, Doerthe Tetzlaff, Xiaoqiang Yang, Chris Soulsby
Summary: This study used the Morris method to screen key parameters and found that a wide range of denitrification rates could mask the sensitivity of other parameters. Adjusting parameter space revealed that spatial sensitivity patterns were influenced by NO3-N inputs and hydrological transport capacity, while temporal dynamics were regulated by annual wetness conditions. The relative proportion of parameter sensitivity further indicated shifts in dominant hydrological/NO3-N processes between wet and dry years.
WATER RESOURCES RESEARCH
(2022)
Article
Water Resources
Jessica Landgraf, Doerthe Tetzlaff, Songjun Wu, Jonas Freymueller, Chris Soulsby
Summary: Vegetation plays a crucial role in water partitioning, and this study used stable water isotopes to investigate the impact of different land management strategies. The results showed that forest sites are potentially most vulnerable to limited water availability, while land use changes in agricultural land did not significantly affect ecohydrological fluxes.
HYDROLOGICAL PROCESSES
(2022)
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.