Article
Environmental Sciences
Moustaq Karim Khan Rony, Priyanka Das Sharmi, Hasnat M. Alamgir
Summary: Antimicrobial resistance (AMR) is a critical global health crisis, with low and middle-income countries facing unique obstacles in addressing this issue. Through a comprehensive review of existing literature, this article identifies the challenges faced by these countries in tackling AMR and proposes effective strategies to overcome them.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Public, Environmental & Occupational Health
Katia Iskandar, Laurent Molinier, Souheil Hallit, Massimo Sartelli, Timothy Craig Hardcastle, Mainul Haque, Halyna Lugova, Sameer Dhingra, Paras Sharma, Salequl Islam, Irfan Mohammed, Isa Naina Mohamed, Pierre Abi Hanna, Said El Hajj, Nurul Adilla Hayat Jamaluddin, Pascale Salameh, Christine Roques
Summary: Comprehensive population-based surveillance data on antimicrobial resistance is lacking, especially in low- and middle-income countries facing challenges such as weak laboratory capacity and poor health information systems. Poor data quality hinders effective monitoring and tackling of antimicrobial resistance.
ANTIMICROBIAL RESISTANCE AND INFECTION CONTROL
(2021)
Review
Infectious Diseases
Cherry Lim, Elizabeth A. Ashley, Raph L. Hamers, Paul Turner, Thomas Kesteman, Samuel Akech, Alejandra Corso, Mayfong Mayxay, Iruka N. Okeke, Direk Limmathurotsakul, H. Rogier van Doorn
Summary: This article reviews the strategies for AMR surveillance using routine microbiology results in LMICs, emphasizing the need for support in certain areas. Different surveillance strategies need to be thoroughly understood in terms of their limitations and potential biases to ensure maximum utilization and interpretation of local routine microbiology data.
CLINICAL MICROBIOLOGY AND INFECTION
(2021)
Review
Infectious Diseases
Giorgia Sulis, Sena Sayood, Sumanth Gandra
Summary: Rising rates of antimicrobial resistance pose a severe threat to human health globally, particularly affecting low- and middle-income countries; drivers of AMR in LMICs are closely intertwined with political, economic, socio-cultural, and environmental factors shaping these nations; while progress is being made in implementing surveillance measures, concrete actions to address underlying structural issues that generate and promote AMR will require significant infrastructural investments and political will.
EXPERT REVIEW OF ANTI-INFECTIVE THERAPY
(2022)
Review
Infectious Diseases
Kirsty Sands, Owen B. Spiller, Kathryn Thomson, Edward A. R. Portal, Kenneth C. Iregbu, Timothy R. Walsh
Summary: Neonatal sepsis is a systemic infection occurring within the first 28 days of life, with early-onset sepsis (EOS) within the first 72 hours. Despite a decrease in global incidence, neonatal sepsis remains a significant cause of neonatal mortality, particularly in low- and middle-income countries. Diagnosis of EOS is challenging due to subtle symptoms and limited access to conclusive laboratory testing, especially in resource-limited settings.
INFECTION AND DRUG RESISTANCE
(2022)
Article
Infectious Diseases
Maria Garza, Chadag Mohan, Lucy Brunton, Barbara Wieland, Barbara Hasler
Summary: This study aims to develop a typology to classify and characterize interventions to reduce antimicrobial use in aquaculture and identify points of action. The most common interventions to address antimicrobial use and resistance were legislative and regulatory frameworks and voluntary instruments. Specific interventions targeting antimicrobial use and resistance were scarce. The presented typology can guide evaluation of interventions that promote responsible antimicrobial use and inform the design of future interventions.
INTERNATIONAL JOURNAL OF ANTIMICROBIAL AGENTS
(2022)
Article
Immunology
Paola Villanueva, Susan E. Coffin, Amha Mekasha, Brendan McMullan, Mark F. Cotton, Penelope A. Bryant
Summary: There are significant differences in pediatric antimicrobial stewardship (AMS) and infection prevention and control (IPC) resources between low- and middle-income countries (LMIC) and high-income countries (HIC). Lack of education is the greatest barrier to AMS and IPC in both LMIC and HIC settings. International collaboration is urgently needed to address the imbalance in global AMS and IPC resource availability and activities.
PEDIATRIC INFECTIOUS DISEASE JOURNAL
(2022)
Article
Multidisciplinary Sciences
Josephine E. S. Strange, Pimlapas Leekitcharoenphon, Frederik Duus Moller, Frank M. Aarestrup
Summary: Bacteriophages are unevenly distributed globally, influenced by regional and national socioeconomic factors. They may have adopted a lytic lifestyle, possibly existing as free-living phages rather than being associated with bacteria. The study highlights the potential role of phages in the dissemination of antimicrobial resistance genes.
SCIENTIFIC REPORTS
(2021)
Article
Infectious Diseases
Fabricio Rodrigues Torres de Carvalho, Joao Paulo Telles, Felipe Francisco Bodan Tuon, Roberto Rabello Filho, Pedro Caruso, Thiago Domingos Correa
Summary: Misuse and overuse of antibiotics is a major concern globally, particularly in low middle-income countries, as it contributes to the rise of antimicrobial resistance. Antimicrobial stewardship programs provide an effective strategy to address this issue. This review focuses on approaches to avoid unnecessary prescription of polymyxins and carbapenems for the treatment of specific infections, as well as the implementation of cumulative antibiograms and biomarkers to facilitate early de-escalation of antibiotics.
Article
Public, Environmental & Occupational Health
Tiscar Graells, Irene A. Lambraki, Melanie Cousins, Anais Leger, Patrik J. G. Henriksson, Max Troell, Carolee A. Carson, Elizabeth Jane Parmley, Shannon E. Majowicz, Didier Wernli, Peter Sogaard Jorgensen
Summary: This study aims to understand the factors influencing the implementation of antimicrobial resistance interventions and the differences in relevant factors between LMICs and HICs. The study findings reveal that behavior, capacity and resources, planning, and information are the most important themes that influence the success of interventions.
FRONTIERS IN PUBLIC HEALTH
(2023)
Article
Infectious Diseases
Ahmad Z. Al Meslamani
Summary: This editorial examines the current landscape of antibiotic practices in LMICs, investigates the factors driving such trends, and explores the global implications of antibiotic resistance. It highlights the need for multifaceted strategies to address the challenges, including improving infrastructure, raising awareness, and strengthening regulations.
EXPERT REVIEW OF ANTI-INFECTIVE THERAPY
(2023)
Review
Environmental Sciences
Jeff Waage, Delia Grace, Eric M. Fevre, John McDermott, Jo Lines, Barbara Wieland, Nichola R. Naylor, James M. Hassell, Kallista Chan
Summary: The emergence of COVID-19 has brought attention to the role of food systems in the generation of human diseases. The relationship between agriculture and infectious diseases is evolving rapidly, particularly in low- and middle-income countries undergoing food system transformation. This study examines four current disease issues and explores potential solutions. It emphasizes the need for a coordinated approach between public health and agriculture sectors in addressing these challenges and seeking win-win solutions that can garner broad policy support and uptake by food systems.
LANCET PLANETARY HEALTH
(2022)
Article
Public, Environmental & Occupational Health
Nga T. T. Do, Huong T. L. Vu, Chuc T. K. Nguyen, Sureeporn Punpuing, Wasif Ali Khan, Margaret Gyapong, Kwaku Poku Asante, Khatia Munguambe, F. Xavier Gomez-Olive, Johannes John-Langba, Toan K. Tran, Malee Sunpuwan, Esperanca Sevene, Hanh H. Nguyen, Phuc D. Ho, Mohammad Abdul Matin, Sabeena Ahmed, Mohammad Mahbubul Karim, Olga Cambaco, Samuel Afari-Asiedu, Ellen Boamah-Kaali, Martha Ali Abdulai, John Williams, Sabina Asiamah, Georgina Amankwah, Mary Pomaa Agyekum, Fezile Wagner, Proochista Ariana, Betuel Sigauque, Stephen Tollman, H. Rogier van Doorn, Osman Sankoh, John Kinsman, Heiman F. L. Wertheim
Summary: The study compared antibiotic access and use practices in six LMICs, revealing significant differences between countries. Self-medication with antibiotics was found to be common in some countries due to its time and cost-saving benefits; factors influencing treatment-seeking included policies, trust in suppliers and drugs, disease severity, and whether antibiotics were intended for children.
LANCET GLOBAL HEALTH
(2021)
Review
Microbiology
Rindala Saliba, Jean-Ralph Zahar, Georges Dabar, Moussa Riachy, Dolla Karam-Sarkis, Rola Husni
Summary: The spread of MDRO is associated with additional costs and higher morbidity and mortality rates. Risk factors can be classified into four categories: bacterial, host-related, organizational, and epidemiological. International recommendations for controlling the spread of MDROs involve surveillance cultures, barrier measures, hand hygiene, contact precautions, cohorting, and antimicrobial stewardship programs. However, implementing these policies in low-to-middle-income countries presents challenges. High compliance with hand hygiene and antimicrobial stewardship can reduce MDRO transmission risks, making it a cost-effective alternative for LMICs instead of costly isolation protocols and additional contact precautions.
Article
Public, Environmental & Occupational Health
Rebecca Milton, David Gillespie, Calie Dyer, Khadijeh Taiyari, Maria J. Carvalho, Kathryn Thomson, Kirsty Sands, Edward A. R. Portal, Kerenza Hood, Ana Ferreira, Thomas Hender, Nigel Kirby, Jordan Mathias, Maria Nieto, William J. Watkins, Delayehu Bekele, Mahlet Abayneh, Semaria Solomon, Sulagna Basu, Ranjan K. Nandy, Bijan Saha, Kenneth Iregbu, Fatima Z. Modibbo, Stella Uwaezuoke, Rabaab Zahra, Haider Shirazi, Syed U. Najeeb, Jean-Baptiste Mazarati, Aniceth Rucogoza, Lucie Gaju, Shaheen Mehtar, Andre N. H. Bulabula, Andrew C. Whitelaw, Timothy R. Walsh, Grace J. Chan
Summary: This study aimed to determine the incidence and associations with neonatal sepsis and all-cause mortality in facility-born neonates in low-income and middle-income countries (LMICs). Findings reveal a high incidence of neonatal sepsis and its significant impact on mortality rates in LMICs.
LANCET GLOBAL HEALTH
(2022)
Article
Infectious Diseases
Jessica M. A. Blair, Pauline Siasat, Helen E. McNeil, Abigail Colclough, Vito Ricci, Amelia J. Lawler, Hind Abdalaal, Michelle M. C. Buckner, Alison Baylay, Stephen J. Busby, Laura J. Piddock
Summary: In this study, it was found that EnvR is a potent repressor of acrAB transcription in Salmonella, and can override binding by RamA, thus preventing multidrug resistance to clinically useful drugs. Finding novel tools to increase EnvR expression may form the basis of a new way to prevent or treat multidrug-resistant infections.
JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY
(2023)
Article
Environmental Sciences
Silvia Berkner, Julia Margaretha Anke, Rolf-Alexander Duering, Silke Fiebig, Thomas Junker, Dieter Hennecke, Monika Herrchen, Maria Meinerling, Joerg Roembke, Soren Thiele-Bruhn, Edward Topp, Wolfgang Voelkel, Susanne Walter-Rohde
Summary: This article describes the validation of a method for studying the anaerobic transformation of chemicals in pig and cattle liquid manure. The method was adopted as OECD Test Guideline (TG) 320 after undergoing validation tests and the process of the Organisation for Economic Cooperation and Development.
Editorial Material
Infectious Diseases
Laura Piddock
EXPERT REVIEW OF ANTI-INFECTIVE THERAPY
(2023)
Article
Microbiology
Laura Carrilero, Steven J. J. Dunn, Robert A. A. Moran, Alan McNally, Michael A. A. Brockhurst
Article
Microbiology
Alistair D. Middlemiss, James R. J. Haycocks, Anne M. Stringer, Laura J. V. Piddock, Joseph T. Wade, David C. Grainger
Summary: The transcription factors MarA, SoxS, Rob and RamA control overlapping stress responses in enteric bacteria and their constitutive expression is linked to antibiotic resistance. The study mapped the binding sites of these factors across the Salmonella Typhimurium genome and identified changes in transcription start sites. This information helps disentangle direct and indirect gene regulation effects and deduce promoter architecture within the regulon. The control of csgD, which is involved in biofilm formation, is particularly sensitive to SoxS repression in Salmonella Typhimurium unlike in Escherichia coli where MarA indirectly regulates csgD expression.
Article
Multidisciplinary Sciences
Sergio Arredondo-Alonso, George Blundell-Hunter, Zuyi Fu, Rebecca A. Gladstone, Alfred Fillol-Salom, Jessica Loraine, Elaine Cloutman-Green, Pal J. Johnsen, Orjan Samuelsen, Anna K. Poentinen, Francois Cleon, Susana Chavez-Bueno, Miguel A. De la Cruz, Miguel A. Ares, Manivanh Vongsouvath, Agnieszka Chmielarczyk, Carolyne Horner, Nigel Klein, Alan McNally, Joice N. Reis, Jose R. Penades, Nicholas R. Thomson, Jukka Corander, Peter W. Taylor, Alex J. McCarthy
Summary: Escherichia coli is a leading cause of invasive bacterial infections in humans. The study reveals the distribution, evolution, and functions of the K1 capsule, a potent capsule type, in E. coli. The findings emphasize the importance of assessing virulence factors in population levels to predict and control bacterial infections.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Bjoern Klaes, Soeren Thiele-Bruhn, Gerhard Woerner, Carmen Hoeschen, Carsten W. Mueller, Philipp Marx, Helge Wolfgang Arz, Sonja Breuer, Rolf Kilian
Summary: We conducted a study to evaluate the ecological relevance of terrestrial iron cycling in a sensitive fjord ecosystem in South Patagonian Andosols. Our findings reveal the transformation pathways of Fe-(hydr)oxides from rhyolitic tephra and their importance for the biogeochemical cycling of iron and the bioproductivity of the fjord. This study provides insights into the formation processes of Fe-(hydr)oxides and their implications for understanding iron cycling in this unique ecosystem.
SCIENTIFIC REPORTS
(2023)
Review
Medicine, General & Internal
Ya Hu, Yongqiang Yang, Yu Feng, Qingqing Fang, Chengcheng Wang, Feifei Zhao, Alan McNally, Zhiyong Zong
Summary: This study provides a comprehensive overview of the global epidemiology and clinical characteristics of carbapenem-resistant Klebsiella pneumoniae (CRKP) infections in neonates. The study found a pooled prevalence of 0.3% and a pooled mortality rate of 22.9% for CRKP infections in hospitalized neonates. While the clonal background of neonatal CRKP strains is diverse and intercountry dissemination is minimal, certain lineages and specific carbapenemase types exhibit wide distribution across continents. These findings underscore the urgent need for research and strategies to address the threat of neonatal CRKP infections globally.
Article
Genetics & Heredity
Ann E. Snaith, Steven J. Dunn, Robert A. Moran, Paul N. Newton, David A. B. Dance, Viengmon Davong, Esther Kuenzli, Anu Kantele, Jukka Corander, Alan McNally
Summary: Increased colonization by antimicrobial-resistant organisms is closely associated with international travel. This study used long-read sequencing to reconstruct plasmid sequences from ESBL-producing E. coli isolates obtained from travellers to Laos. The results revealed a diverse collection of plasmids, many of which carried AMR genes. Fine-scale analysis identified various AMR gene contexts and highlighted the importance of IS elements in multidrug resistance. Convergence of ESBL and colistin resistance determinants was also observed. The extensive diversity seen here emphasizes the worrisome potential for stable new vehicles for AMR dissemination through international travel networks.
MICROBIAL GENOMICS
(2023)
Article
Microbiology
Robert A. Moran, Baomo Liu, Emma L. Doughty, Yingyi Guo, Xiaoliang Ba, Willem van Schaik, Chao Zhuo, Alan McNally
Summary: ESBL resistance has a significant impact on the clinical management of E. coli infections in hospitals worldwide. This study aimed to understand the structures and dynamics of ESBL-EC populations in a Guangzhou ICU. The results revealed distinct populations of ESBL-EC strains in patients, staff, and clinical environments, with bla(CTX-M) genes playing a major role in conferring ESBL resistance.
MICROBIOLOGY SPECTRUM
(2023)
Article
Health Care Sciences & Services
Emma L. Doughty, Haiyang Liu, Robert A. Moran, Xiaoting Hua, Xiaoliang Ba, Feng Guo, Xiangping Chen, Linghong Zhang, Mark Holmes, Willem van Schaik, Alan Mcnally, Yunsong Yu
Summary: This study conducted a three-month observational study in a 28-bed intensive care unit (ICU) in Hangzhou, China, to explore the persistence and evolutionary dynamics of carbapenem-resistant Acinetobacter baumannii (CRAB). The study found that the ICU population of CRAB was dominated by OXA-23-producing global clone 2 isolates, which could be divided into 20 distinct clusters through genome sequencing. The study emphasized the importance of environmental CRAB reservoirs in the epidemiology of ICUs and the unique challenges in containing the spread of CRAB.
LANCET REGIONAL HEALTH-WESTERN PACIFIC
(2023)
Article
Infectious Diseases
Alasdair P. Macgowan, M. L. G. Attwood, Alan R. Noel, R. Barber, Zachary Aron, Timothy J. Opperman, Elizabeth Grimsey, Jack Stone, Vito Ricci, L. J. Piddock
Summary: This study investigated the pharmacodynamic characteristics of efflux pump inhibitors (EPIs) in Escherichia coli through in vitro experiments and gene sequencing. The results showed that the AUC of chlorpromazine and PA beta N was most closely related to the reduction in bacterial load, while the T > threshold of MBX-4191 was the driver for bacterial load reduction. No changes in population profiles were observed with the combination of ciprofloxacin + EPIs, but mutations were detected in gyrA, gyrB, and marR.
JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY
(2023)
Review
Biotechnology & Applied Microbiology
Ursula Theuretzbacher, Benjamin Blasco, Maelle Duffey, Laura J. V. Piddock
Summary: Advances in genomics, systems biology, protein structure determination, and artificial intelligence provide new opportunities for target-based antibacterial drug discovery. Multiple criteria, including target essentiality, conservation, homology with human genes, and drug-like binding potential, need to be considered in selecting a suitable target. Subcellular location and the risk of drug resistance also play important roles in the process. This review highlights promising targets and inhibitors for Gram-negative bacteria and lessons learned from past drug discovery programs.
NATURE REVIEWS DRUG DISCOVERY
(2023)
Review
Environmental Sciences
Kaniz F. Chowdhury, Rebecca J. Hall, Alan McNally, Laura J. Carter
Summary: Antimicrobials, heavy metals, and biocides are common contaminants in water bodies worldwide, driving antimicrobial resistance (AMR). Aquatic phytoremediation, utilizing the ability of macrophytes to remove and degrade pollutants, is a promising green solution. This review highlights the presence of AMR drivers in aquatic environments, evaluates phytoremediation mechanisms, identifies potential hyper-accumulators, and suggests a configuration for optimum removal of AMR drivers. Knowledge gaps regarding co-exposure effects and the fate of antibiotic-resistant genes and bacteria during phytoremediation are also addressed.
REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Christopher H. Connor, Amanda Z. Zucoloto, John T. Munnoch, Ian-Ling Yu, Jukka Corander, Paul A. Hoskisson, Braedon McDonald, Alan Mcnally
Summary: This study demonstrates that MDR E. coli ST131 can compete and displace non-MDR E. coli in vivo, even without antibiotic treatment. The study also reveals that carriage of AMR genes is associated with increased diversity in carbohydrate metabolism genes.
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)
