Article
Engineering, Marine
Zexing Kuang, Yangguang Gu, Yiyong Rao, Honghui Huang
Summary: The study investigated the concentrations of heavy metals in sediments and marine organisms in Daya Bay, using the Monte Carlo method to analyze the uncertainty of results. It found that Hg was the primary pollutant with contributions from Cd and As to ecological risks. The study suggests the need to strengthen management of Hg, Cd, and As emissions to effectively control heavy metal contamination in Daya Bay.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
Zhengjia Zhao, Qiang Liu, Yibo Liao, Peisong Yu, Yanbin Tang, Qinghe Liu, Xiaolai Shi, Lu Shou, Jiangning Zeng, Quanzhen Chen, Jianfang Chen
Summary: To study the ecological risks of trace metals in sediments and their impact on benthic organisms, 12 trace metals were analyzed and macrobenthos were identified in sediments collected from the south coast of Zhejiang province in the East China Sea. The concentrations of most trace metals were high in the estuary, except for Ba and Sr. The concentration of Cd slightly exceeded the coastal background, indicating potential ecological risk. Methods based on sediment quality guidelines were found to be more intuitive in assessing ecological risk compared to those based on background values (PN, PLI, RI). Significant correlations were observed between ecological risks and benthos density and biomass, suggesting the negative impact of high concentrations of trace metals on macrobenthic survival in sediments.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Evgeny Yakovlev, Andrey Puchkov, Alexey Malkov, Daria Bedrina
Summary: This article focuses on the content of heavy metals in the bottom sediments of the estuary of the Pechora River. The study found that the concentrations of heavy metals in the sediments are low, indicating a low level of environmental risk.
MARINE POLLUTION BULLETIN
(2022)
Article
Multidisciplinary Sciences
Andreea Maria Iordache, Constantin Nechita, Ramona Zgavarogea, Cezara Voica, Mihai Varlam, Roxana Elena Ionete
Summary: This study assessed the contamination level of eight heavy metals and trace elements in the sediments of Olt River and found high levels of pollution primarily caused by anthropogenic factors. The results have important implications for assessing environmental and human health risks and informing freshwater management plans.
SCIENTIFIC REPORTS
(2022)
Review
Environmental Sciences
Pedro Agustin Robledo Ardila, Rebeca Alvarez Alonso, Juan Jose Duran Valsero, Raquel Morales Garcia, Flor Arcega Cabrera, Elisabeth Lamas Cosio, Sergio Duran Laforet
Summary: This study analyzed the pollution of marine sediments in a large number of locations on the south coast of Mallorca island. The results showed that the concentrations of heavy metals exceeded the limits for uncontaminated sediments, especially near the outfalls. The study also found that marine sediments can be a useful indicator of the impact of anthropogenic activities on the environment and human health.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Multidisciplinary Sciences
Noa Tang Sylvie Desiree, Ekoa Bessa Armel Zacharie, Messina Therese Raissa, Onana Vincent Laurent, Ndjigui Paul-Desire
Summary: This study focuses on the risk assessment of trace metals in the Mefou River sediments located at Yaounde, West-Africa. The results suggest that the sediments of the Mefou River may be affected by low to moderate pollution levels, with Ni, Cu, Pb, and Zn mainly influenced by human sources and V and Cr partially derived from human activities.
Review
Chemistry, Multidisciplinary
Ludovico Pontoni, Claudia La Vecchia, Patrycja Boguta, Maria Sirakov, Enrico D'Aniello, Massimiliano Fabbricino, Annamaria Locascio
Summary: Heavy metals in the aquatic environment can affect animal wellness in different ways, with organic ligands playing a key role in metal behavior. The amphilic character of marine natural organic matter makes it an important medium for interactions with metal molecules. Organic matter-metal complexes alter metal bioavailability and subsequently impact living organisms.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Article
Multidisciplinary Sciences
Alonzo Alfaro-Nunez, Diana Astorga, Lenin Caceres-Farias, Lisandra Bastidas, Cynthia Soto Villegas, Kewrin Macay, Jan H. Christensen
Summary: The research found a significant presence of microplastic pollution in both water samples and marine organisms in the Tropical Eastern Pacific and the Galapagos archipelago, with particles ranging from 150 to 500 μm in size being the most common. This study represents one of the first reports to simultaneously detect and quantify the abundance of microplastic particles and their impact on marine organisms in this region.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Youping Shou, Junjie Zhao, Yuxin Zhu, Jianzhe Qiao, Zhangfeng Shen, Wei Zhang, Ning Han, Avelino Nunez-Delgado
Summary: This study evaluated the potential health and ecological risks of heavy metal pollution in surface waters and sediments in Tianjin Nangang Industrial Zone, China. The results showed that heavy metal concentrations decreased over time, with arsenic posing the main carcinogenic risk to the environment.
ENVIRONMENTAL RESEARCH
(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
Lucia Pittura, Francesca Garaventa, Elisa Costa, Roberta Minetti, Alessandro Nardi, Lucia Ventura, Silvia Morgana, Marco Capello, Giuseppe Ungherese, Francesco Regoli, Stefania Gorbi
Summary: This study documents the geographical and temporal differences in the occurrence of microplastics in water and fish samples collected near Giglio Island in the North Tyrrhenian Sea. The results show site-dependent differences in water samples, indicating the role of surface currents in the local distribution of microplastics. The size of the Neuston nets used did not affect the retention efficiency of microplastics. Fish samples in 2019 had a higher frequency of microplastic ingestion compared to 2017, and the occurrence was higher than in other Mediterranean areas. Fragments were the most dominant shape, with polypropylene and polyethylene being the prevalent polymers, showing no significant differences between sites and years. This study highlights the importance of conducting microplastic investigations in both living and non-living matrices for effective monitoring of marine pollution.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Mohammad Abdul Momin Siddique, Mahfuzur Rahman, Shahriar Md Arifur Rahman, Md Rubel Hassan, Zeenath Fardous, Muhammed Alamgir Zaman Chowdhury, Mohammad Belal Hossain
Summary: The study found that the average concentrations of six heavy metals in the sediment of the lower Meghna River estuary were ranked in descending order of iron (Fe), zinc (Zn), lead (Pb), chromium (Cr), copper (Cu), and cadmium (Cd). The geo-accumulation, contamination, and pollution load indexes indicated that the estuary was not contaminated by Fe, Zn, Pb, Cr, and Cu. There was a significant correlation between sediment grain size and the association of iron (Fe) and lead (Pb), but no significant correlation was found between other metals and grain size.
INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
(2021)
Article
Engineering, Marine
Madurya Adikaram, Amarasooriya Pitawala, Hiroaki Ishiga, Daham Jayawardana, Carla M. Eichler
Summary: The study examined the influence of rapid regional development on trace elements accumulation in the sediments of Batticaloa lagoon, Sri Lanka. It was found that the sediment cores had low pollution levels and ecological risk, suggesting the need for environmental management planning to ensure sustainable development in the rapidly developing region.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
Yang Liu, Weiming Kuang, Jing Xu, Jinmin Chen, Xiuwu Sun, Cai Lin, Hui Lin
Summary: This study measured the concentrations of heavy metals in seawater, sediment, and organisms to understand their distribution, sources, and health risks in the Daya Bay marine ecosystem. The major pollutant was Pb, with higher concentrations in spring and noticeable levels near sewage outlets and shores. Submarine pipeline sewage, atmospheric deposition, and runoff were identified as the main sources of heavy metals. Cd, Cu, and Zn were the most accumulated elements in organisms, with Cd in shellfish deserving particular attention. However, health risks of all elements were within acceptable limits, except for confirmed potential health risks of Pb.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
V. S. Quaresma, V. M. C. Aguiar, A. C. Bastos, K. S. Oliveira, F. V. Vieira, F. Sa, J. A. Baptista Neto
Summary: The study found that the failure of the tailing dam in Mariana led to significant contamination of trace metals in the seafloor sediments of the ESCS, with high levels of zinc and iron reaching extremely polluted levels. The post-disaster deposition of fine material in the study area was also documented, correlating with the increase in metal concentrations.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Environmental Sciences
Roberto Xavier Supe Tulcan, Wei Ouyang, Xiang Gu, Chunye Lin, Mats Tysklind, Baodong Wang
Summary: The study found that atrazine concentrations in marine organisms from Jiaozhou Bay were relatively low, with a trend of biotic dilution as trophic levels increased. The predicted risks to species from exposure to atrazine were low, with less than 0.02% of species expected to be affected by detrimental effects. Overall, there was no significant health risk associated with consuming seafood from JZB due to the limited daily intake and low target hazard quotient of atrazine.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Environmental Sciences
Pius Babuna, Chuanliang Han, Meijia Li, Amatus Gyilbag, Bian Dehui, Doris Abra Awudi, Roberto Xavier Supe Tulcan, Saini Yang, Xiaohua Yang
Summary: This study found that humidity and temperature have an impact on the spread of COVID-19, with a simple logistic function used to model pandemic growth. In the first wave, cases were controlled in China and managed in South America and Africa. Additionally, there is a negative correlation between humidity, temperature, and virus spread.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Amatus Gyilbag, Martial Amou, Roberto Xavier Supe Tulcan, Lei Zhang, Tsedale Demelash, Yinlong Xu
Summary: This study analyzed the heatwave characteristics in Tanzania using HWMId, indicating that future heatwaves will be hotter, longer, and more severe, highlighting the increasing need for public awareness of adaptation.
Review
Environmental Sciences
Sajid Rashid, Izaz Ali Shah, Roberto Xavier Supe Tulcan, Wajid Rashid, Mika Sillanpaa
Summary: Mercury is a highly toxic and mobile heavy metal that poses significant environmental and health risks. High concentrations of mercury were found in the environment, particularly in surface water, soil, sediments, and urban atmosphere. Seafood and vegetable consumption were associated with high health risks, while risks from soil and groundwater ingestion were relatively low.
ENVIRONMENTAL POLLUTION
(2022)
Review
Environmental Sciences
Sajid Rashid, Wajid Rashid, Roberto Xavier Supe Tulcan, Haiou Huang
Summary: The excessive use of pesticides in Pakistan, a leading country in pesticide use, poses significant threats to human health and the environment. This study reviewed 85 scientific publications and found that Pakistan has high pesticide consumption, with a drastic increase of 1169% in the past two decades. Organochlorines were identified as the most problematic pesticides due to their environmental occurrence and known toxicities. The misuse or overuse of pesticides by farmers, driven by insufficient knowledge about risks, leads to high occupational exposure.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Roberto Xavier Supe Tulcan, Wei Ouyang, Zewei Guo, Chunye Lin, Xiang Gu, Aihua Wang, Baodong Wang
Summary: This study investigated the sources, spatiotemporal characteristics, and risks of vanadium in two typical bays of the Northwest Pacific. High concentrations of vanadium were found in Jiaozhou Bay compared to Laizhou Bay, and the metal concentrations in the rivers were significantly impacted by vanadium-related industries. Vanadium exhibited significant seasonal variation, with higher concentrations during the monsoon period at Laizhou Bay and during the winter in rivers and bays. Vanadium presents low to null risks to the population, but species with limited resilience are likely to face medium to high risks.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Pius Babuna, Xiaohua Yang, Roberto Xavier Supe Tulcan, Bian Dehui, Mohammed Takase, Bismarck Yelfogle Guba, Chuanliang Han, Doris Abra Awudi, Meishui Li
Summary: Water inequality, water security, and water governance are crucial factors that impact the sustainable use of water resources. Water inequality poses a threat to water security, leading to poverty and instability, while effective water governance can eliminate water inequality through equal allocation and sustainable utilization of water resources.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Chemical
Zewei Guo, Wei Ouyang, Ming Chen, Roberto Xavier Supe Tulcan, Lei Wang, Chunye Lin, Mengchang He
Summary: Precipitation variation has a profound impact on agricultural development and diffuse pollution risk, potentially undermining the effectiveness of pesticide reduction policies. This study analyzed the response of pesticide discharge loads in a large vulnerable watershed to pesticide application intensity and precipitation variance before and after the implementation of pesticide reduction policies. The results showed that the policies successfully reduced the annual discharge load of the pesticide atrazine within the watershed. Furthermore, the sensitivity of atrazine discharge loads shifted from precipitation to pesticide application intensity after the implementation of the policies, although discharge loads significantly increased in an abnormally high precipitation year in the context of increasing precipitation variability.
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.
