Article
Environmental Sciences
Wei Wu, Yiqiu Chen, Yuting Cheng, Qiuqin Tang, Feng Pan, Naijun Tang, Zhiwei Sun, Xinru Wang, Stephanie J. London, Yankai Xia
Summary: This study investigates the association between particulate matter (PM) exposure and semen quality in fertile men. The findings suggest that exposure to PM2.5 has adverse effects on semen quality, particularly reducing sperm motility.
ENVIRONMENTAL HEALTH
(2022)
Article
Environmental Sciences
Xiaoli Shen, Ming Zhan, Yuqing Wang, Weifeng Tang, Qianlong Zhang, Jun Zhang
Summary: This study investigates the associations between individual paraben exposure and paraben mixture with semen quality parameters. The results suggest negative associations between paraben mixture and sperm concentration, total sperm count, and sperm motility.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Obstetrics & Gynecology
Kajsa Ugelvig Petersen, Katia Keglberg Haervig, Jens Peter Bonde, Karin Sorig Hougaard, Gunnar Toft, Cecilia Host Ramlau-Hansen, Johan Hoy Jensen, Laura Deen, Sandra Sogaard Tottenborg
Summary: This study aimed to explore the association between maternal stress during pregnancy and reproductive function in young men. Through a nested cohort study in the Danish National Birth Cohort, the authors found no overall negative associations between maternal stress and male reproductive function. However, maternal emotional stress was associated with higher total sperm count, serum estradiol, and calculated free testosterone. The study highlights the need for further validation of stress measurement during pregnancy and improving our understanding of the full spectrum of fetal stress exposures and their consequences for health.
FERTILITY AND STERILITY
(2022)
Article
Environmental Sciences
Song Xu, Yaru Wu, Yujie Chen, Wenqing Lu, Yi-Xin Wang, Biling Gao, Jie Zhang
Summary: This study found that metal exposure in seminal plasma is associated with semen quality and sperm concentration. Specific metabolite modules were found to be associated with metals in seminal plasma, suggesting that seminal plasma may be an ideal sample for male reproductive biomarker discovery and exposure risk assessment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yuting Cheng, Qiuqin Tang, Yiwen Lu, Mei Li, Yijie Zhou, Peihao Wu, Jinhui Li, Feng Pan, Xiumei Han, Minjian Chen, Chuncheng Lu, Xinru Wang, Wei Wu, Yankai Xia
Summary: This study examined the association between long-term exposure to air pollution and semen quality. The results showed that PM10, PM2.5, SO2, and NO2 were negatively associated with sperm total motility. Co-exposure to the six air pollutants also reduced sperm total motility. Additionally, PM10 exposure was found to decrease sperm DNA methylation.
ENVIRONMENTAL POLLUTION
(2022)
Article
Physiology
Ning Wang, Haike Gu, Yiyuan Gao, Xiaoyan Li, Ge Yu, Fang Lv, Cuige Shi, Shangming Wang, Meifang Song, Shucheng Zhang
Summary: This study aims to establish a system for evaluating semen quality in fertile men using factor analysis. The comprehensive indicators of semen volume, sperm motility, and semen pH can be used as evaluative measures. Additionally, the abstinence period, age of first spermatorrhea, smoking, drinking, and place of residence were found to be correlated with semen quality.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Environmental Sciences
Qing Chen, Furong Wang, Huan Yang, Xiaogang Wang, Aihua Zhang, Xi Ling, Lianbing Li, Peng Zou, Lei Sun, Linping Huang, Hongqiang Chen, Lin Ao, Jinyi Liu, Jia Cao, Niya Zhou
Summary: The study revealed that various components of PAHs may impact reproductive parameters differently. Inhalation of PAHs in air, especially high molecular weight (HMW) PAHs, may pose a potential risk factor for male reproductive health.
ENVIRONMENTAL POLLUTION
(2021)
Article
Andrology
Ludmila Osadchuk, Larisa Shantanova, Ivan Troev, Maxim Kleshchev, Alexander Osadchuk
Summary: The study compared semen quality and reproductive hormone levels in young men from different cities and ethnic groups in the Siberian region of Russia, finding significant regional and ethnic differences. Ethnicity and environment were suggested to play key roles in these differences.
Article
Environmental Sciences
Shabana Siddique, Imen Farhat, Cariton Kubwabo, Peter Chan, Cynthia G. Goodyer, Bernard Robaire, Jonathan Chevrier, Barbara F. Hales
Summary: This study investigated the association between organophosphate esters (OPEs) and hormone levels and semen quality. The study found both positive and negative associations between doubling of OPEs concentrations and hormone levels and semen parameters. The results suggest that OPEs exposure is associated with altered hormone levels and semen parameters.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Endocrinology & Metabolism
Ludmila Osadchuk, Maxim Kleshchev, Alexander Osadchuk
Summary: The study found that heavy smokers among young Russian men had poorer semen quality compared to non-smokers, with reductions in sperm volume, count, concentration, and motility, and increases in sperm DNA fragmentation and teratozoospermia. Smoking also led to decreased serum and seminal zinc levels, and impaired metabolic health. The effects of smoking on reproductive function were ethnically specific, with the most significant impact observed in smoking Slavs.
FRONTIERS IN ENDOCRINOLOGY
(2023)
Article
Obstetrics & Gynecology
Nis Brix, Anne Gaml-Sorensen, Andreas Ernst, Linn Hakonsen Arendt, Lea Lykke Harrits Lunddorf, Gunnar Toft, Sandra S. Tottenborg, Katia Keglberg Haervig, Birgit Bjerre Hoyer, Karin S. Hougaard, Jens Peter E. Bonde, Cecilia Host Ramlau-Hansen
Summary: The timing of puberty is associated with semen characteristics, testicular volume, and reproductive hormone levels.
FERTILITY AND STERILITY
(2023)
Article
Urology & Nephrology
Jesse B. Persily, Sameer Thakker, William Beaty, Bobby B. Najari
Summary: The study aimed to characterize the general health status of infertile men in the United States using a nationally representative sample. Results showed no significant differences in the rates of key medical co-morbidities between infertile men and fertile men. Notably, only 50% of potentially infertile men received male infertility evaluation.
Article
Environmental Sciences
Gaohui Zan, Longman Li, Hong Cheng, Lulu Huang, Sifang Huang, Xiaoyu Luo, Lili Xiao, Chaoqun Liu, Haiying Zhang, Zengnan Mo, Xiaobo Yang
Summary: The study found significant inverse dose-dependent trends of copper, tin, and zinc with E2; zinc with SHBG; copper and nickel with TT, as well as significant positive dose-dependent trend of iron with E2. Additionally, approximately inverted U-shaped associations existed between lead and SHBG, iron and TT. Furthermore, E2, SHBG, and TT were negatively associated with FBG level.
ENVIRONMENTAL POLLUTION
(2021)
Article
Endocrinology & Metabolism
Leila Maghsoumi-Norouzabad, Ahmad Zare Javid, Anahita Mansoori, Mohammadreza Dadfar, Amirarsalan Serajian
Summary: Vitamin D3 supplementation had no significant effects on body weight, BMI, WC, BF, serum OCN, LH, FSH, T, E2, SHBG, PRO, T/E2 ratio, FAI, semen volume, sperm count, and normal sperm morphology in infertile men with asthenozoospermia. However, it increased serum 25(OH)VD3, PTH, and phosphorus levels, as well as seminal and serum calcium concentrations, T/LH ratio, total and progressive sperm motility, while significantly decreasing compared to baseline and placebo group.
REPRODUCTIVE BIOLOGY AND ENDOCRINOLOGY
(2021)
Article
Environmental Sciences
Kajsa Ugelvig Petersen, Katia Keglberg Haervig, Esben Meulengracht Flachs, Jens Peter Bonde, Christian Lindh, Karin Sorig Hougaard, Gunnar Toft, Cecilia Host Ramlau-Hansen, Sandra Sogaard Tottenborg
Summary: This study examined the impact of PFAS exposure on reproductive function in young adult males. The results showed a slight association between higher levels of PFAS and follicle-stimulating hormone (FSH) levels, but no consistent associations with semen quality and testicular volume were found.
ENVIRONMENTAL RESEARCH
(2022)
Article
Public, Environmental & Occupational Health
Iben H. Beck, Niels Bilenberg, Kirstine A. Davidsen, Anne A. Rasmussen, Henriette Boye, Tina K. Jensen
Summary: This study assessed intelligence quotient scores of 7-year-old children in Denmark and investigated potential predictors. The results showed that girls and children of mothers with higher education had higher intelligence quotient scores, while boys and children of mothers with lower education had lower scores. Maternal education and child sex were strong predictors of intelligence quotient scores.
SCANDINAVIAN JOURNAL OF PUBLIC HEALTH
(2023)
Article
Psychology, Developmental
Camilla V. B. Palm, Dorte Glintborg, Laura G. Find, Pia Larsen, Cilia M. Dalgaard, Henriette Boye, Tina K. Jensen, Anja F. Dreyer, Marianne S. Andersen, Niels Bilenberg
Summary: Maternal testosterone levels were positively associated with ASD traits in boys, while maternal PCOS was associated with increased ASD traits in offspring. However, the association became non-significant after excluding parental psychiatric diagnosis. Offspring anogenital distance was not linked to ASD traits.
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
(2023)
Article
Psychiatry
Emily Cantio, Niels Bilenberg, Signe Monrad Norgaard, Iben Have Beck, Soren Moller, Cathriona Cantio, Tina Kold Jensen, Nicoline Bebe Mortensen, Asta Rasmussen, Henrik Boye Thybo Christesen
Summary: This study investigates the association between blood concentrations of serum 25-hydroxyvitamin D at different time points and intelligence quotient score at the age of 7, and explores potential differences in the association based on child sex.
AUSTRALIAN AND NEW ZEALAND JOURNAL OF PSYCHIATRY
(2023)
Article
Public, Environmental & Occupational Health
Veronica van Der Schyff, Jiri Kalina, Eva Govarts, Liese Gilles, Greet Schoeters, Argelia Castano, Marta Esteban-Lopez, Jiri Kohoutek, Petr Kukucka, Adrian Covaci, Gudrun Koppen, Lenka Andryskova, Pavel Piler, Jana Klanova, Tina Kold Jensen, Loic Rambaud, Margaux Riou, Marja Lamoree, Marike Kolossa-Gehring, Nina Vogel, Till Weber, Thomas Goen, Catherine Gabriel, Dimosthenis A. Sarigiannis, Amrit Kaur Sakhi, Line Smastuen Haug, Lubica Palkovicova Murinova, Lucia Fabelova, Janja Snoj Tratnik, Darja Mazej, Lisa Melymuk
Summary: This study reports the adverse health effects of various legacy and emerging flame retardants (FRs) on human and environmental health in children from nine European countries. The study detected ten halogenated FRs in blood and four organophosphate FR metabolites in urine samples from 2136 children. The concentrations of FRs were associated with lifestyle factors.
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
(2023)
Article
Public, Environmental & Occupational Health
Antje Gerofke, Madlen David, Phillipp Schmidt, Joana Lobo Vicente, Jurgen Buekers, Liese Gilles, Ann Colles, Jos Bessems, Michiel Bastiaensen, Adrian Covaci, Elly Den Hond, Gudrun Koppen, Michelle Laeremans, Veerle J. Verheyen, Milena Cerna, Jana Klanova, Andrea Krskova, Martin Zvonar, Lisbeth E. Knudsen, Holger M. Koch, Tina Kold Jensen, Loic Rambaud, Margaux Riou, Nina Vogel, Catherine Gabriel, Spyros Karakitsios, Nafsika Papaioannou, Denis Sarigiannis, Reka Kakucs, Szilvia Kozepesy, Peter Rudnai, Tamas Szigeti, Fabio Barbone, Valentina Rosolen, Cedric Guignard, Arno C. Gutleb, Amrit Kaur Sakhi, Line Smastuen Haug, Beata Janasik, Danuta Ligocka, Milada Estokova, Lucia Fabelova, Branislav Kolena, Lubica Palkovicova Murinova, Ida Petrovicova, Denisa Richterova, Milena Horvat, Darja Mazej, Janja Snoj Tratnik, Agneta Annika Runkel, Argelia Castano, Marta Esteban-Lopez, Susana Pedraza-Diaz, Agneta Akesson, Sanna Lignell, Jelle Vlaanderen, Jan-Paul Zock, Greet Schoeters, Marike Kolossa-Gehring
Summary: Within the HBM4EU initiative, HBM indicators were developed to address key policy questions and support chemical policies. Result indicators provide information on chemical exposure in different demographic groups and allow comparisons to identify differences and inform policy measures. Impact indicators assess health risks by comparing exposure values to health-based guidance values, helping to identify relevant health issues and support risk management decisions.
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
(2023)
Article
Environmental Sciences
Louise Scheutz Henriksen, Hanne Frederiksen, Niels Jorgensen, Anders Juul, Niels E. Skakkebaek, Jorma Toppari, Jorgen Holm Petersen, Katharina M. Main
Summary: This study aimed to explore if there is an association between fetal phthalate exposure and markers of testicular function in young adult men. The results showed that higher maternal phthalate exposure was associated with higher luteinizing hormone (LH) but unchanged testosterone in adult sons. Additionally, higher maternal exposure was associated with lower total and free testosterone/LH ratios in adult sons.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Andrology
Laura Smidt Hansen, Laerke Priskorn, Stine A. Holmboe, Tina Kold Jensen, Ann Holm Hansen, Anna-Maria Andersson, Niels Jorgensen
Summary: This study found an association between testicular function and markers of metabolic and cardiovascular health in young men. Reproductive hormone levels and semen quality may serve as early biomarkers of cardiovascular health in healthy men.
Article
Biology
Marc K. Pedersen, Elvira V. Brauner, Ann H. Hansen, Laura S. Hansen, Tina K. Jensen, Niels Jorgensen, Laerke Priskorn
Summary: In this cross-sectional study, the association between self-reported asthma and testicular function was investigated. The results showed that men with self-reported asthma had poorer testicular function, specifically lower total sperm count and borderline lower sperm concentration compared to men without asthma. However, the causality cannot be determined due to the study's design limitations.
Article
Public, Environmental & Occupational Health
Iben Have Beck, Niels Bilenberg, Soeren Moeller, Flemming Nielsen, Philippe Grandjean, Frederik Damsgaard Hojsager, Thorhallur Ingi Halldorsson, Christel Nielsen, Tina Kold Jensen
Summary: The study found that prenatal and early postnatal exposure to perfluoroalkyl substances (PFAS) may affect intelligence quotient (IQ), especially higher concentrations of perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) were associated with lower IQ scores.
AMERICAN JOURNAL OF EPIDEMIOLOGY
(2023)
Article
Environmental Sciences
Elvira V. Brauner, Cecilie S. Uldbjerg, Astrid L. Beck, Youn-Hee Lim, Henriette Boye, Hanne Frederiksen, Anna-Maria Andersson, Tina K. Jensen
Summary: This study investigated the relationship between maternal paraben concentrations in second trimester urine and birth size of the offspring, specifically looking at sex-specific associations. The findings revealed that higher maternal exposure to n-butylparaben was associated with lower birth size in female offspring, while no significant relationship was observed in male offspring.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Nina Vogel, Rosa Lange, Phillipp Schmidt, Laura Rodriguez Martin, Sylvie Remy., Andrea Springer, Vladimira Puklova, Milena Cerna, Peter Rudnai, Szilvia Kozepesy, Beata Janasik, Danuta Ligocka, Lucia Fabelova, Branislav Kolena, Ida Petrovicova, Michal Jajcaj, Milada Estokova, Marta Esteban-Lopez, Argelia Castano, Janja Snoj Tratnik, Anja Stajnko, Lisbeth E. Knudsen, Jorma Toppari, Katharina M. Main, Anders Juul, Anna-Maria Andersson, Niels Jorgensen, Hanne Frederiksen, Cathrine Thomsen, Amrit Kaur Sakhi, Agneta Akesson, Christina Hartmann, Marie Christine Dewolf, Gudrun Koppen, Pierre Biot, Elly Den Hond, Stefan Voorspoels, Liese Gilles, Eva Govarts, Aline Murawski, Antje Gerofke, Till Weber, Maria Ruether, Arno C. Gutleb, Cedric Guignard, Tamar Berman, Holger M. Koch, Marike Kolossa-Gehring
Summary: Phthalates are widely used as plasticizers and can have negative impacts on reproductive functions. However, existing human biomonitoring studies on internal exposure to phthalates in Europe differ in many aspects, making comparability challenging. The HBM4EU initiative gathered data from 29 studies across Europe to describe the general population's exposure to phthalates from 2005 to 2019. This study is an important step towards making internal exposures to phthalates comparable across countries and provides suggestions for improved harmonization in future studies.
Article
Environmental Sciences
Frederik Damsgaard Hojsager, Annika Sigvaldsen, Marianne Skovsager Andersen, Anders Juul, Flemming Nielsen, Soren Moller, Henrik Boye Thybo Christesen, Anders Grontved, Philippe Grandjean, Tina Kold Jensen
Summary: This study found that prenatal and early postnatal exposure to perfluoroalkyl substances (PFAS) is associated with lower bone mineral density (BMD) at age 7. The association is stronger for exposure at 18 months than prenatal exposure.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Environmental Sciences
Marzanna Marianna Sorensen, Ane Baerent Fisker, Christine Dalgard, Kristoffer Jarlov Jensen, Flemming Nielsen, Christine Stabell Benn, Philippe Grandjean, Amalie Timmermann
Summary: The aim of this study was to identify predictors of infant serum-PFAS concentrations. The study found that the location of residence was the most important determinant of serum-PFAS concentrations among Guinea-Bissau infants, indicating a potential role of diet as affected by the global spread of PFAS, but further research is needed to explore reasons for the regional differences in PFAS exposure.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Brittney O. Baumert, Fabian C. Fischer, Flemming Nielsen, Philippe Grandjean, Scott Bartell, Nikos Stratakis, Douglas I. Walker, Damaskini Valvi, Rohit Kohli, Thomas Inge, Justin Ryder, Todd Jenkins, Stephanie Sisley, Stavra Xanthakos, Sarah Rock, Michele A. La Merrill, David Conti, Rob Mcconnell, Lida Chatzi
Summary: Animal studies have suggested that the liver is a major site for the accumulation and toxicity of per- and polyfluoroalkyl substances (PFAS), but these findings have not been replicated in human populations. In this study, concentrations of seven PFAS were measured in matched liver and plasma samples from 64 adolescents undergoing bariatric surgery. A multilinear regression model based on toxicokinetic descriptors perfectly explained the liver:plasma concentration ratios. Among the PFAS congeners examined, perfluoroheptanoic acid (PFHpA) had a considerably higher liver:plasma concentration ratio. Mechanistic modeling suggested that complex kinetic transport processes contribute to the high liver:plasma concentration ratio of PFHpA. This study demonstrates the potential of combining biomonitoring data with mechanistic modeling to understand the internal distribution and specific target organ toxicity of PFAS in humans.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Muqiu Hu, Xin Zhao, Jinghan Gu, Lulu Qian, Zhiqing Wang, Yuanyuan Nie, Xiaoyu Han, Long An, Haiqiang Jiang
Summary: Due to its simple process, environmental friendliness, and low operating costs, biometallurgy has become a popular technology for metals recovering from low-grade ores and tailings. An optimized agar was used to isolate and grow functional bacteria, resulting in the successful isolation of six functional stains. These strains were further tested for their ability to leach metals from polymetallic sulfide tailings, with significant improvements observed when the strains were mixed together. The selection of leaching process should be based on tailings composition and target metals.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Saqib Hassan, Aswin Thacharodi, Anshu Priya, R. Meenatchi, Thanushree A. Hegde, R. Thangamani, Ht Nguyen, Arivalagan Pugazhendhi
Summary: An Endocrine Disrupting Chemical (EDC) is a compound that disrupts the function of the endocrine system and is found in the environment. EDCs, such as Bisphenol A and pesticides, have been shown to have negative effects on the female reproductive system. Understanding the relationship between EDCs and women's health is crucial for developing strategies to protect reproductive health and informing public policy decisions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Lichang Zhou, Zhaoling Li, Boyi Cheng, Jinqi Jiang, Xinqi Bi, Zongping Wang, Guanghao Chen, Gang Guo
Summary: Thiosulfate can promote sulfur-mediated bacterial activity, inhibit glycogen accumulating organisms, and enhance denitrification efficiency. After the carbon source is reduced, the competitive ability of glycogen accumulating organisms increases, resulting in reduced sulfate reduction.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Claire E. Campbell, Devyn L. Cotter, Katherine L. Bottenhorn, Elisabeth Burnor, Hedyeh Ahmadi, W. James Gauderman, Carlos Cardenas-Iniguez, Daniel Hackman, Rob McConnell, Kiros Berhane, Joel Schwartz, Jiu-Chiuan Chen, Megan M. Herting
Summary: Recent studies have found a connection between air pollution and increased risk for behavioral problems during development. However, more longitudinal studies are needed to investigate how exposure during the transition to adolescence may affect emotional behaviors.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Jing-hong Liang, Ru-yu Yang, Mei-ling Liu, Ying-qi Pu, Wen-wen Bao, Yu Zhao, Li-xin Hu, Yu-shan Zhang, Shan Huang, Nan Jiang, Xue-ya Pu, Shao-yi Huang, Guang-hui Dong, Ya-jun Chen
Summary: This study examines the association between urban Green and blue spaces (GBS) exposure and Emotion and behavior problems (EBP) in youth populations. The findings suggest that higher exposure to GBS, particularly green spaces (GS) and blue spaces (BS), is associated with a decrease in the risk of developing total difficulties in young individuals. The joint effect of GS and BS may also contribute to the decrease in EBPs.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Diego Ruiz-Sobremazas, Mario Ruiz Coca, Miguel Morales-Navas, Rocio Rodulfo-Cardenas, Caridad Lopez-Granero, Maria Teresa Colomina, Cristian Perez-Fernandez, Fernando Sanchez-Santed
Summary: Air pollution is associated with a range of health issues and gestational exposure to environmental pollutants may be linked to neurodevelopmental disorders. This study investigated the effects of oral gestational exposure to particulate matter (PM) on ultrasonic vocalizations (USV). The findings suggest that this exposure may lead to social deficits and abnormal gene expression related to neurotransmitter systems. Further research is needed to better understand the effects of air pollution on neurodevelopmental disorders and the neurotransmission systems involved.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yagmur Kabakci, Sadiye Kosar, Ozgur Dogan, Fehmi Gorkem Uctug, Osman Atilla Arikan
Summary: This study investigated the effect of electrohydrolysis pretreatment on municipal solid waste. The results showed that applying electrohydrolysis pretreatment increased methane production and reduced the time required for hydrolysis, suggesting it is a promising method to improve anaerobic digestion efficiency.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Chuanwu Zhao, Yaozhong Pan, Hanyi Wu, Yu Zhu
Summary: This study analyzed the impact of industrial zones on urban heat islands using remote sensing images and a novel spectral index. The research found that the contraction or expansion of industrial zones has a significant effect on land surface temperature. The results are valuable for environmental assessment and fine management of industrial cities.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Bang Du, Zhongzhong Wang, Piet N. L. Lens, Xinmin Zhan, Guangxue Wu
Summary: This study investigated the performance, syntrophic relationships, microbial communities, and metabolic pathways of ethanol-fed reactors with different operational modes and solids retention times. The results showed that different microorganisms were enriched under different SRT conditions, and syntrophic bacteria related to methane production could be enriched under low SRT conditions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Gokulan Ravindiran, Sivarethinamohan Rajamanickam, Muralikrishnan Ramalingam, Gasim Hayder, Balamurugan Karupaiya Sathaiah, Madhava Krishna Reddy Gaddam, Senthil Kumar Muniasamy, Priya Arunkumar
Summary: The present study investigated the sustainable approach for wastewater treatment using waste algal blooms. The biochar produced by the marine algae Ulva reticulata was used to remove chromium, nickel, and zinc from aqueous solutions. The study examined the adsorbents' properties and stability using SEM/EDX, FTIR, and XRD. The results showed that the biochar had high removal efficiency for the toxic metals, and the packed bed column effectively removed the heavy metal ions. The Thomas and Adams-Bohart models were found to best fit the regression values, and desorption studies were conducted to understand the sorption and elution processes.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Vignesh Vinayagam, Kavitha Nagarasampatti Palani, Sudha Ganesh, Siddharth Rajesh, Vedha Varshini Akula, Ramapriyan Avoodaiappan, Omkar Singh Kushwaha, Arivalagan Pugazhendhi
Summary: The presence of pollutants in water contributes to global pollution and poses significant threats to humans and wildlife. Finding effective wastewater treatment techniques is crucial for reducing pollutant accumulation in the environment. This paper highlights recent advances in the electrochemical advanced oxidation method and other processes for treating pharmaceuticals, dyes, and pesticide-polluted effluents.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
M. M. M. Ahmed, Kai-Yue Chen, Fang-Yu Tsao, Yi-Cheng Hsieh, Yu-Ting Liu, Min Tzou
Summary: This study investigated the sorption of citric acid onto humic acid-iron hydr(o)xide coprecipitate (HAFHCP) and the reciprocal effects of citric acid and P sorption on HAFHCP. The results showed that citric acid could increase P availability and have an impact on P sorption.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Xibo Xu, Zeqiang Wang, Xiaoning Song, Wenjie Zhan, Shuting Yang
Summary: The selection of predictor variables is crucial in building a digital mapping model for potentially toxic elements (PTEs) in soil. Traditionally, spatial and spectral parameters have been used as predictor variables, but the temporal dimension is often overlooked. This study demonstrates the value of incorporating temporal indices in the model, leading to significant performance improvements. The temporal-spatial-spectral covariate combinations used in a random forest (RF) algorithm achieve satisfactory mapping accuracy and outperform other methods.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yan Pei, Xun Liu, Mengbo Cao, Zijun Wang, Hongbing Yang
Summary: Heteroatom doping can reconfigure the electronic structure of heterogeneous catalysts, leading to the development of advanced oxidation water purification materials with superior performance and stability. In this study, a series of catalysts with different elemental doping were prepared using a simple and environmentally friendly method. The S-doped NiCo2O4 catalyst showed excellent catalytic performance for the removal of Tetracycline, with significantly increased kinetic constant and high oxidation and mineralization efficiency in a wide pH range. The degradation process was dominated by non-radical oxidation pathway after S doping, and the overall process moved towards low toxicity.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Srivalli Thimmarayan, Harshavardhan Mohan, Gaddapara Manasa, Karthi Natesan, Shanmugam Mahendran, Pavithra Muthukumar Sathya, Byung-Taek Oh, R. Ravi Kumar, Rangasamy Sigamani Gandhimathi, Arul Jayaprakash, Kamala-Kannan Seralathan
Summary: This study investigated the bacterial degradation of naphthalene (NPT) isolated from crude oil-contaminated soil. Bacillus sp. GN 3.4, a potential bacteria for NPT biodegradation, was isolated and the optimal conditions for NPT degradation were determined. The study suggests that Bacillus sp. GN 3.4 could potentially aid in bioremediation by eliminating NPT from the soil.
ENVIRONMENTAL RESEARCH
(2024)
