Article
Engineering, Environmental
Fatemeh Izaditame, Matthew G. Siebecker, Donald L. Sparks
Summary: This study investigated the impact of sea-level rise-induced flooding on the release of arsenic and selected hazardous chemicals in contaminated sediments, finding that the dissolved concentrations of pollutants remain high even after flooding.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Rongbo Liu, Wei Wang, Linghao Kong, Bin Chen
Summary: The concentrations of trace metals (Cu, Pb, Zn, Cr, Cd, As, Hg, Ni, Li, and Co) in sediment cores were studied to determine background levels, assess deposition patterns, and examine contamination in Laizhou Bay, China. Anthropogenic enrichment was observed for Pb, Cd, and Hg, which can be traced back to human activities since 7 thousand years ago. Trace metal concentrations during the 10-7 thousand years ago phase were considered as background levels. Analysis showed that the metals were mainly from natural sources, and contamination was observed for Pb, Cd, and Hg during the 7-0 thousand years ago period.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Wei Song, Hongbao Qu, Jianqiang Wang, Bo Chen, Chao Dong, Jiaojiao Yang
Summary: This study investigated the concentration profiles of trace metals in a sediment core in Beibu Gulf, and found that these metals were mainly naturally sourced and the sediments were not contaminated by trace metals.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Sina Shahabi-Ghahfarokhi, Mahboubeh Rahmati-Abkenar, Leonie Jaeger, Sarah Josefsson, Henric Djerf, Changxun Yu, Mats Astroem, Marcelo Ketzer
Summary: This study investigates the release of metals during the oxidation of sediments in anoxic areas. Results show that several metals are released into the water column during the reoxygenation process, and some of them are found in higher concentrations than previously measured in the area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Aimei Zhu, Jihua Liu, Shuqing Qiao
Summary: This study investigates the background levels of heavy metals in the Bohai Sea sediments and assesses the ecological risks using sediment core, 2-sigma outlier, and regression methods. The results show significant disparities between the ecological risks calculated by the regression method and the sediment core/2-sigma methods, suggesting the regression method is not suitable for the complex sources in the Bohai Sea. However, the sediment core method indicates moderate ecological risks, with most heavy metals having negligible contamination except for Hg and Cd.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Valentina Sattarova, Kirill Aksentov, Anatolii Astakhov, Xuefa Shi, Limin Hu, Alexandr Alatortsev, Anna Mariash, Elena Yaroshchuk
Summary: The analysis of trace metals in sediments of the Laptev and East Siberian Seas showed high concentrations of Cr, Zn, Ni, Cu, As, and Cd, with the increased Cd concentration possibly stemming from the highly productive waters of the Bering Sea. Contamination indices revealed no contamination by Cr, Ni, Cu, Zn, Pb, and Cd at any sampling locations, but slight As enrichment was observed.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Hanyi Li, Jiajia Wu, Qian Huang, Lujian Lin, Bo Yuan, Qiang Wang, Haoliang Lu, Jingchun Liu, Hualong Hong, Chonglin Yan
Summary: This study aimed to investigate the sources of organic matter (OM) and associated potential toxic metals (PTMs) in an estuary under urbanization. By combining C-N stable isotope analysis and positive matrix factorization, the researchers found correlations between the sources of total sediment metals and the sources of OM-related metals. The study also revealed significant relationships between OM-associated PTMs and organic matter sources. It further deepened the understanding of the coupling between PTMs and sediment organic matter (SOM).
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Pavel Kabanov, Tyler E. Hauck, Sofie A. Gouwy, Stephen E. Grasby, Annique van der Boon
Summary: This paper reviews the global records of anoxic events during the Middle Devonian - earliest Mississippian and explores their triggers and controls. The study focuses on the Horn River Group (HRG), where four major events and numerous positive d(13)C excursions are observed. The occurrences of these events resemble classical Mesozoic oceanic anoxic events (OAEs) and suggest a volcanic trigger, as shown by spikes in Hg and negative Os-187/Os-188 anomalies. The Devonian anoxic events caused extinctions due to deoxygenation, acidification, and intensified weathering and eutrophication of shelfal seas.
EARTH-SCIENCE REVIEWS
(2023)
Article
Agronomy
Soeren B. L. Risse, Markus Puschenreiter, Alice Tognacchini
Summary: This study investigates rhizosphere processes and Ni mobilization by the Ni hyperaccumulator Odontarrhena chalcidica, and tests Ni uptake in relation to a soil Ni gradient. The results show that O. chalcidica increases Ni and Fe concentrations, pH, and DOC concentrations in soil pore water. It is also shown that soil pH and pseudo-total Ni are better predictors of Ni plant uptake in O. chalcidica than labile soil Ni.
Article
Environmental Sciences
Valentina Sattarova, Kirill Aksentov, Alexander Alatortsev, Le Duc Luong, Renat Shakirov, Maxim Ivanov, Alexey Legkodimov
Summary: The study found that the concentrations of Cr, Ni, Zn, and Pb in South China Sea sediments are significantly positively correlated with fine-sized fractions and TOC, while the concentration of As is not positively correlated with other metals. The relatively positive correlations of Cd with various elements suggest it comes from different sources.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Mohammad Mahbub Kabir, Samia Akter, Farah Tasneem Ahmed, Mohammad Mohinuzzaman, Md Didar-ul-Alam, Khan M. G. Mostofa, Abu Reza Md Towfiqul Islam, Nahin Mostofa Niloy
Summary: Salinity in coastal Bangladesh's drinking water poses a severe crisis in socio-economic, environmental, and human health safety. The study analyzed tube well water samples for trace metals and found that salinity-induced FDOM influences water quality and health risks, especially for children.
Article
Environmental Sciences
Enrica Balboni, Nancy Merino, James D. Begg, Kyle M. Samperton, Frances E. Zengotita, Gareth T. W. Law, Annie B. Kersting, Mavrik Zavarin
Summary: Since 1952, the Sellafield nuclear complex in the UK has been authorized to release liquid radioactive effluent into the Irish Sea, making it the largest source of plutonium (Pu) discharged in western Europe. This study examines the mobility of Pu in contaminated sediments collected from the Esk Estuary and finds that Pu leaching is enhanced under anoxic conditions. These findings provide valuable insights into the stability of Pu in transient environments.
Article
Engineering, Environmental
Magnus Hieronymus, Ola Kalen
Summary: The current coastal spatial planning in Sweden fails to consider the uncertainties and time dependence of sea level rise, resulting in inaccurate flood risk assessments. The study finds that extreme events dominate flood risk for shorter planning periods, while the risk of high sea level rise becomes more important for longer planning periods.
Article
Oceanography
Li Li, Xiaojing Wang, Yijun Ren, Huaqiang Su, Limin Hu, Gang Yang, Zhongqiao Li, Aleksandr A. Bosin, Anatolii S. Astakhov, Jianfang Chen, Yanguang Liu, Xuefa Shi
Summary: This study reveals the key role of shelf-basin exchange processes in regulating biogeochemical recycling of trace metals in the Arctic Ocean, with metal transport mainly scavenged by Mn oxides from the water column. As climate change progresses, this transport and enrichment mechanism may intensify over time.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
M. Ratheesh Kumar, K. Anoop Krishnan, V. Vimexen
Summary: This quinquennial study evaluated the bioaccumulation pattern of trace metals in Meretrix meretrix. It found a strong association between the concentration of trace metals in the clam and the corresponding metal concentration in the sediments. The study also discovered that the intake of trace metals by the clam is influenced by seasonal variation, chemical speciation, and metabolic stress.
MARINE POLLUTION BULLETIN
(2022)
Article
Polymer Science
Ruth M. Barajas, Vanessa Wong, Karen Little, Antonio F. Patti, Gil Garnier
Summary: This study investigates the benefits of TEMPO-oxidized nanocellulose superabsorbents prepared using different drying techniques by evaluating their structure, composition, and application rate. The results show that the 50 degrees C oven-dried SAP exhibits the highest ionic sensitivity in soil, while soil treated with freeze-dried superabsorbent displays the highest water retention.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Soil Science
Lisa A. Lobry de Bruyn, Sam North, Andrew Biggs, Ivanah C. Oliver, Vanessa N. L. Wong, Oliver G. G. Knox
Article
Engineering, Environmental
Mohammad Rastegari, Niloofar Karimian, Scott G. Johnston, Steven J. Doherty, Jessica L. Hamilton, Girish Choppala, Mona Hosseinpour Moghaddam, Edward D. Burton
Summary: This study investigates the incorporation of Sb(V) into schwertmannite and finds that heterovalent substitution for Fe(III) is the mechanism of Sb(V) incorporation. Schwertmannite can stabilize Sb(V) through the formation of edge and double-corner sharing linkages. This suggests that Sb(V)-coprecipitated schwertmannite may serve as a long-term sink for Sb in acidic environments.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Chang Xu, Vanessa N. L. Wong, Anna Tuovinen, Asko Simojoki
Summary: In acid sulfate (AS) soils, subsoil liming can reduce the acidification of sulfidic subsoils in the field. However, the effects of liming on GHG production in AS subsoils and the mechanisms involved are still poorly understood.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
William W. Bennett, Enzo Lombi, Kirk G. Scheckel, Ryo Sekine, Scott G. Johnston, Edward D. Burton, Daryl L. Howard, Peter Kappen, Donald E. Canfield
Summary: This study demonstrates the utility of synchrotron-based X-ray spectroscopic techniques in investigating the geochemistry of vanadium in ancient marine sediments. The results show that vanadium is primarily hosted by phyllosilicate-III and is strongly associated with potassium-rich clay minerals. The findings suggest that differentiating authigenic and detrital vanadium in ancient marine sediments may not be possible, which has implications for vanadium isotope system studies.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Engineering, Environmental
Niloofar Karimian, Scott G. Johnston, Ehsan Tavakkoli, Andrew J. Frierdich, Edward D. Burton
Summary: Jarosite, a common mineral in acidic sulfur-rich environments, can strongly sorb both As(V) and Sb(V). Little is known regarding the mechanisms that control simultaneous co-sorption of As(V) and Sb(V) to jarosite. This study examined the sorption mechanisms of As(V) and Sb(V) to jarosite, revealing a strong contrast in their sorption behaviors.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Evelyn Dillon, Bree Morgan, Daniel T. Oldfield, Edward D. Burton, Jessica Veliscek-Carolan
Summary: Hierarchically porous titania beads with and without amine functionalisation were developed as adsorbents for highly toxic As(V) removal from acid mine drainage (AMD)-affected environments. The beads showed selective removal of As(V) over other competing elements, with different adsorption mechanisms for Fe(II)/Fe(III). The adsorption capacity of As(V) decreased in real AMD solutions, and non-functionalised titania beads were considered preferable for As remediation due to their greater selectivity. Porous titania beads with functionalisation offer a promising and flexible technology for remediating AMD-affected environments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
G. Scullett-Dean, J. L. Hamilton, O. Repina, H. E. A. Brand, E. D. Burton, M. Saunders, T. C. Santini
Summary: This study investigated the incorporation of various minor and trace elements into hematite and their effects on the physical and chemical properties of the mineral. It was found that the simultaneous incorporation of Al, Cr, V, and Zn showed both synergistic and antagonistic effects among certain element combinations. However, Mo had minimal association with hematite, while As completely prevented its formation. The results provide new insights into trace element geochemistry in hematite and emphasize the importance of multi-element studies in understanding natural and anthropogenic systems.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Correction
Chemistry, Multidisciplinary
William W. Bennett, Enzo Lombi, Kirk G. Scheckel, Ryo Sekine, Scott G. Johnston, Edward D. Burton, Daryl L. Howard, Peter Kappen, Donald E. Canfield
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Engineering, Environmental
Qian Sun, Edward D. Burton, Dunfeng Si, Tingting Fan, Hu Cheng, Zhenghong Yu, Xiaohou Shao, Peixin Cui, Yujun Wang
Summary: Iron (oxyhydr)oxides and organic matter are closely associated in natural environments, and their fate can be influenced by sulfur cycling. Sulfur preferentially reacts with iron (oxyhydr)oxides to form inorganic sulfur, indirectly affecting the fate of organic matter. During the oxidation stage, previously formed iron (II) species are reoxidized to iron oxides, recapturing released organic matter.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
William W. Bennett, Enzo Lombi, Kirk G. Scheckel, Ryo Sekine, Scott G. Johnston, Edward D. Burton, Daryl L. Howard, Peter Kappen, Donald E. Canfield
Summary: This paper presents the use of synchrotron-based X-ray techniques to investigate the vanadium host phases in ancient marine sediments. The results show that vanadium is mainly present as vanadium (III) hosted by phyllosilicate. Strong associations between vanadium and potassium suggest that vanadium is hosted by potassium-rich clay minerals. Differentiating authigenic and detrital vanadium in ancient marine sediments is unlikely due to similar chemical speciation for both fractions.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Agriculture, Multidisciplinary
Ruth M. Barajas-Ledesma, Craig W. Stocker, Vanessa N. L. Wong, Karen Little, Antonio F. Patti, Gil Garnier
Summary: In this study, the effects of different soil moisture levels and types of superabsorbent polymers (SAPs) on spinach plants were examined. The highest plant biomass was observed in sandy soil amended with a commercial SAP. However, the addition of a SAP decreased plant biomass in clay soil, regardless of the type. The use of nanocellulose SAP was associated with waterlogging stress and rapid biodegradation. Further research is needed to modify the structure of nanocellulose SAP for improved agricultural benefits.
ACS AGRICULTURAL SCIENCE & TECHNOLOGY
(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.
