Review
Environmental Sciences
Md Nahid Pervez, Amir Mahboubi, Clarisse Uwineza, Tiziano Zarra, Vincenzo Belgiorno, Vincenzo Naddeo, Mohammad J. Taherzadeh
Summary: This review focuses on the recovery methods and technologies of volatile fatty acids (VFAs), with a special emphasis on membrane filtration. Filtration techniques such as nanofiltration and reverse osmosis have shown great potential in recovering VFAs. Factors such as operational parameters, membrane properties, and effluent characteristics are discussed in relation to the success of VFAs recovery.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Ashutosh Kumar Pandey, S. Pilli, P. Bhunia, R. D. Tyagi, Y. Rao Surampalli, C. Tian Zhang, Sang-Hyoun Kim, Ashok Pandey
Summary: VFAs are the building blocks of the chemical industry and play a key role in the planet's organic carbon cycle. To address the issues of unsustainable VFA production from fossil fuels, it is crucial to develop alternate sources through anaerobic digestion. By researching accessible feedstocks, influencing parameters, and utilizing VFAs to create consumer products, economic stability can be achieved through traditional and advanced production methods.
Article
Environmental Sciences
Md Nahid Pervez, Begum Bilgic, Amir Mahboubi, Clarisse Uwineza, Tiziano Zarra, Vincenzo Belgiorno, Vincenzo Naddeo, Mohammad J. Taherzadeh
Summary: The production of volatile fatty acids (VFAs) from food waste using a microfiltration immersed membrane bioreactor (MBR) and simultaneous recovery of VFAs shows great potential for application.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Biotechnology & Applied Microbiology
Swarnima Agnihotri, Dong-Min Yin, Amir Mahboubi, Tugba Sapmaz, Sunita Varjani, Wei Qiao, Derya Y. Koseoglu-Imer, Mohammad J. Taherzadeh
Summary: This article provides a detailed overview of the applications of volatile fatty acids (VFAs) generated from petrochemical and biological routes, highlighting their sustainability and flexibility in various fields.
Article
Engineering, Environmental
Junkai Hu, Yongde Liu, Xue Song, Jihong Zhao, Qiaochong He
Summary: This study investigated the potential of using Brassica chinensis waste (BCW) for anaerobic fermentative production of volatile fatty acids (VFA). The results showed that stacking time, initial pH, inoculum dose, and temperature all had significant effects on VFA yield and the microbial community structure. Stacking BCW for 3 days resulted in the highest VFA yield of 187.79 mgCOD/gVS. VFA production was inhibited under acidic and alkaline conditions, and the optimal inoculum dose was found to be 2 gTS/L. Firmicutes and Proteobacteria were identified as the dominant microorganisms involved in the acid production step of hydrolysis in anaerobic fermentation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Kasra Khatami, Merve Atasoy, Maximilian Ludtke, Christian Baresel, Ozge Eyice, Zeynep Cetecioglu
Summary: The study investigated the impact of different sludge inoculums, pH levels, and retention times on the generation of VFAs during anaerobic digestion of food waste. Acetic acid was the dominant product under alkaline conditions, while propionic and acetic acids were dominant under acidic conditions.
Article
Energy & Fuels
Mukesh Kumar Awasthi, Lukitawesa Lukitawesa, Yumin Duan, Mohammad J. Taherzadeh, Zengqiang Zhang
Summary: In this study, the bacterial community in anaerobic digestion of citrus wastes inoculated with sludge was evaluated, revealing that key bacteria associated with volatile fatty acids (VFAs) production mainly belonged to Firmicutes, Bacteroidetes, and Actinobacteria. The study also observed changes in bacterial diversity among different treatment groups during the anaerobic digestion process.
Article
Engineering, Environmental
Serena Simonetti, Claudia Fernandez Martin, Davide Dionisi
Summary: This study aimed to maximize product concentration, yield, and productivity in anaerobic fermentation of biomass to produce short-chain organic acids. High substrate concentrations were found to increase product concentration, yield, and productivity, with the highest values obtained at pH 5.5. pH adjustments showed a positive correlation with increased product concentration, yield, and productivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Qiqi Ping, Qian Fang, Yujia Chen, Wunxue Ding, Yanyu Xiao, Zhihui Wang, Wuyang Zhou
Summary: In this study, the effects of Fe3O4 on the production of volatile fatty acids (VFAs) in the anaerobic fermentation process of waste cooking oil (WCO) and aerobic sludge (AS) were investigated. The results showed that the addition of Fe3O4 promoted the hydrolysis and acidification of WCO, leading to an increase in VFAs and propionic acid concentration. Microbial community analysis revealed that Firmicutes, Proteobacteria, and Bacteroidetes were the main phylum involved in VFA production, with Veillonellaceae under Firmicutes being the main microorganism responsible for propionic acid production. This study provides new insights for the utilization of Fe3O4 in WCO treatment and propionic acid production.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Agricultural Engineering
Siran Feng, Huu Hao Ngo, Wenshan Guo, Soon Woong Chang, Dinh Duc Nguyen, Yi Liu, Shicheng Zhang, Hoang Nhat Phong Vo, Xuan Thanh Bui, Bich Ngoc Hoang
Summary: This review provides an overview of the roles and applications of enzymes in volatile fatty acids production, as well as feasible measures to enhance enzyme processes. It critically evaluates the major obstacles and possible future research directions for the better utilization of enzymatic processes in promoting volatile fatty acids production from wastewater.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Huda Al Battashi, Shatha Al-Kindi, Vijai Kumar Gupta, Nallusamy Sivakumar
Summary: The study demonstrated that utilizing waste paper as a resource for PHA production through anaerobic digestion is a low-cost strategy. By optimizing the synthesis conditions of PHA from VFAs produced from waste paper, a significantly higher yield of PHA was achieved with a limited nutrient medium.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Engineering, Environmental
Rhys Jon Jones, Rodrigo Fernandez-Feito, Jaime Massanet-Nicolau, Richard Dinsdale, Alan Guwy
Summary: A novel method for recovering volatile fatty acids (VFAs) from a continuously-fed food waste bioreactor was developed, increasing production rates to 35 mg VFA/gVSS/day by alleviating end-product inhibition and arresting methanogenesis. The recovered VFAs were concentrated to 4000 mg/L through electrodialysis, making them suitable for use as platform chemicals with minimal refining. This represents a promising means of producing sustainable platform chemicals and also helps reduce methane emissions from bioreactors.
Article
Agricultural Engineering
Alice Wing See Law, Francisco Rubio Rincon, Jack van de Vossenberg, Zina Al Saffar, Laurens Welles, Eldon R. Rene, Carlos Lopez Vazquez
Summary: The study evaluated the effect of solids retention time and lipid content on the efficiency of solid destruction and volatile fatty acids (VFA) yield in the bioconversion of food waste. Shorter retention time and higher lipid content reduced solid destruction efficiency but increased VFA yield. The introduction of degradable organics in waste oils and inhibition by long-chain fatty acids caused process instability at higher lipid content.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Jinyuan Ma, Kaijun Wang, Chuan Shi, Yue Liu, Cheng Yu, Kuo Fang, Xiangyun Fu, Quan Yuan, Yuan Zhou, Hui Gong
Summary: A novel anammox aggregate was found to significantly reduce nitrate production and efficiently remove ammonia and nitrite without the need for external carbon sources. The stable internal heterotrophic nitrate removal pathway in the anammox aggregates eliminated a substantial amount of nitrate, demonstrating high-efficiency total nitrogen removal capabilities and providing theoretical guidance for the application of anammox process.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Andrea Gianico, Agata Gallipoli, Giulio Gazzola, Carlo Pastore, Barbara Tonanzi, Camilla M. Braguglia
Summary: A novel biorefinery platform integrating thermal pretreatment and solid-liquid separation unit is proposed to fully exploit food waste potential for production of valuable chemicals and energy through semi-continuous anaerobic bioconversion. The platform effectively extracts macromolecular organics and promotes acidogenic fermentation and chain elongation pathways, showing promising revenues by integrating the thermal upstream treatment.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Organic
Jiahua Chen, Jun Wei Lim, Shunsuke Chiba
Summary: An facile method for the conversion of 2-piperidones and 2-pyrrolidones into 2-cyano-3-iodo piperidines or pyrrolidines has been achieved through a sequence of controlled hydride reduction, silylation, iodination, and cyanation, resulting in high diastereoselectivity and good yields.
Article
Environmental Sciences
Amanuel Gidey Gebretatios, Abdul Rasheed Kadiri Kanakka Pillantakath, Thongthai Witoon, Jun -Wei Lim, Fawzi Banat, Chin Kui Cheng
Summary: The discovery of Sto spacing diaeresis ber silica has expanded the realm of morphology-controlled mesoporous silica nanomaterials such as MCM-41, SBA-15, and KCC-1. These materials play a vital role in advancing techniques and technologies for addressing global challenges in water and the environment, energy storage, and biotechnology due to their high BET surface area, tunable pores, ease of functionalization, and excellent thermal and chemical stability. Synthesizing these materials from cost-efficient biomass wastes, particularly rice husk, is a sustainable model. This review discusses the valorization of rice husk into value-added silica materials, methods of high-quality silica extraction, and the synthesis principles of various mesoporous silica materials. The potential applications in catalysis, drug delivery, energy, adsorption, and environmental remediation are explored.
Article
Biochemistry & Molecular Biology
Chii-Dong Ho, Luke Chen, Yan-Ling Yang, Shih-Ting Chen, Jun Wei Lim, Zheng-Zhong Chen
Summary: A novel design of an AGMD module was proposed which utilized lambda-ribs carbon-fiber open slots to enhance permeate flux and productivity in desalination. Theoretical and experimental modeling equations were developed to predict permeate flux under different hydrodynamic angles. The results showed good agreement between the experimental and theoretical data. The AGMD module designed with lambda-ribs carbon-fiber open slots acted as an eddy promoter, reducing vibration and increasing permeate flux by diminishing temperature polarization. The permeate flux was improved by up to 15.6% due to the reduction of concentration polarization.
Article
Thermodynamics
Daniel Jia Sheng Chong, Yi Jing Chan, Senthil Kumar Arumugasamy, Sara Kazemi Yazdi, Jun Wei Lim
Summary: This study utilizes machine learning algorithms such as RSM, ANFIS, and ANN to model biogas production and methane yield in a local anaerobic covered lagoon. The models show high accuracy with R² up to 0.98. ANFIS has the highest prediction accuracy with the lowest MAE and RMSE values. Optimal conditions obtained through multi-objective optimization show increased biogas production and methane yield. pH is identified as the most influential factor on methane yield through sensitivity analysis.
Review
Energy & Fuels
Aisha Siddiqa, Zhoveta Yhobu, Doddahalli H. Nagaraju, Mahesh Padaki, Srinivasa Budagumpi, Visweswara Rao Pasupuleti, Jun-Wei Lim
Summary: This review discusses the utilization of different special structures of carbons derived from lignin, cellulose, and lignocellulose components as electrode materials for supercapacitors and batteries. The structures, including carbon nanosheets, carbon nanofibers, hierarchically porous carbon, and heteroatom-doped carbon, have been extensively studied for their performance in energy storage. The study emphasizes the importance of considering the structural morphologies of the materials and highlights the gaps and challenges for further developments in energy storage.
Article
Environmental Sciences
Hemamalini Rawindran, Rabbani Syed, Abdulaziz Alangari, Kuan Shiong Khoo, Jun Wei Lim, Nurul Tasnim Sahrin, Uganeeswary Suparmaniam, Ratchaprapa Raksasat, Chin Seng Liew, Wai Hong Leong, Worapon Kiatkittipong, Muhammad Kashif Shahid, Hirofumi Hara, Maizatul Shima Shaharun
Summary: The study analyzed the attachment of microalgal cells to topologically textured organic solid surfaces under different pH conditions, focusing on surface properties such as wettability and surface energy. The results showed that increasing hydrophobicity facilitated better biofilm formation. pH 5 and pH 11 were found to have the highest and lowest microalgal growth, respectively, which correlated with the contact angle values. The study also revealed the mechanism of microalgal attachment using extracellular polymeric substances (EPS) and the hydrophobic nature of the substrate.
ENVIRONMENTAL RESEARCH
(2023)
Review
Environmental Sciences
Zakariyya Uba Zango, Kuan Shiong Khoo, Abdurrahman Garba, Haliru Aivada Kadir, Fahad Usman, Muttaqa Uba Zango, Wen Da Oh, Jun Wei Lim
Summary: This article summarizes the research progress on the formation mechanism of perfluorooctanoic acid (PFOA) in wastewater, the reasons why it cannot be effectively treated by conventional methods, and the application of advanced oxidation processes (AOPs) and photocatalytic degradation techniques for PFOA removal. The study found that the active radicals generated by AOPs and the photogenerated species of the photocatalytic process can effectively attack PFOA molecules, leading to its efficient degradation and the formation of shorter-chain perfluorinated carboxylic acids. Eventually, PFOA is completely mineralized to carbon dioxide and fluoride ion. The prospects and challenges of these techniques are also discussed.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Y. P. Toh, M. J. K. Bashir, X. Guo, L. P. Wong, D. Ozturk, S. S. A. Amr, J. W. Lim
Summary: In this research, the electrocoagulation-intensified peroxidation using an aluminum electrode was studied as a post-treatment method for poultry slaughterhouse wastewater. The optimal conditions for treatment performance were determined using response surface methodology, and the final treated effluent met the discharge standards. The cost of treating one cubic meter of wastewater was calculated as 3.02 MYR ($0.68) under the optimum conditions.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Anita Nagarajan, Bernard Goyette, Vijaya Raghavan, Adarsh Bhaskar, Rajinikanth Rajagopal
Summary: Phosphorous and Nitrogen are crucial for plant growth and their sustainable management is important to meet the global food demand. The production of struvite from agricultural wastes such as anaerobic digestates and livestock wastewater is a green marketing tool in the fertilizer industry. This article provides an overview of struvite production, its potential as a fertilizer source, and its integration with anaerobic digestion, cost benefits, and plant yields.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Green & Sustainable Science & Technology
Chin Seng Liew, Guo Ren Mong, Jun Wei Lim, Ratchaprapa Raksasat, Hemamalini Rawindran, Muzamil A. Hassan, Man Kee Lam, Kuan Shiong Khoo, Zakariyya Uba Zango
Summary: This study reports that low-temperature thermal pre-treatment of waste activated sludge (WAS) can improve the growth of black soldier fly larvae (BSFL) and increase biodiesel production. The BSFL fed with pre-treated WAS had high protein contents and moderate lipid contents. The highest protein and lipid yields were achieved when WAS was pre-treated at 90 degrees C for 16 hours. The biodiesel produced from BSFL had unique fatty acid methyl ester profile, low iodine value, high cetane number, and was in accordance with biodiesel standards.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Agronomy
Ieshita Pan, Krishnamoorthy Nanjundan, Aravindan Achuthan, Praveen Kumar Issac, Rajinikanth Rajagopal, Soon Woong Chang, Sartaj Ahmad Bhat, Balasubramani Ravindran
Summary: The application of bioactive peptides (BAPs) is highly promising due to their potential antimicrobial, antioxidant, agonistic, and ACE inhibition properties. In this study, a protease-producing bacteria isolated from compost was identified as Bacillus subtilis. The protease production was enhanced through fermentation under optimized conditions, and the purified enzyme showed broad activity under various conditions. The bioactive compound produced by the protease exhibited significant antimicrobial properties against Escherechia coli, Staphylococcus aureus, and Pseudomonas aeruginosa.
Article
Environmental Sciences
Ensan Waatriah E. S. Shahrin, Nur Alimatul Hakimah Narudin, Nurulizzatul Ningsheh M. Shahri, Muhammad Nur, Jun-Wei Lim, Muhammad Roil Bilad, Abdul Hanif Mahadi, Jonathan Hobley, Anwar Usman
Summary: This study systematically investigated the adsorptive removal and dynamic interaction of three pharmaceutical pollutants (rifampicin, streptomycin, and ibuprofen) onto chitosan. The results showed that chitosan derived from mud-crab shells could be a potential practical and economical adsorbent for removing pharmaceutical compounds from wastewater. The adsorption mechanism was proposed based on spectroscopic analyses and thermograms.
EMERGING CONTAMINANTS
(2023)
Article
Environmental Sciences
Kumar Pandion, Mohammed Junaid Hussain Dowlath, Kantha Deivi Arunachalam, Omar H. Abd-Elkader, Krishna Kumar Yadav, Nusrat Nazir, Rajinikanth Rajagopal, Ravishankar Ram Mani, Sumathi Jones, Soon Woong Chang, Balasubramani Ravindran
Summary: The study aims to investigate the influence of seasonal changes on the pollution loads of the sediment in a coastal area by analyzing the nutrients, organic carbon, and particle size of sediment samples collected from different sampling stations in three different seasons. It also examines the impact of anthropogenic and natural activities on the sediment quality of the coastal area. The results show significant differences in sediment quality among seasons, indicating contamination from both natural and man-made sources. This study will contribute to the development of effective management strategies for the protection and restoration of degraded coastal ecosystems.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Prativa Mahato, Suman Adhikary, Bernard Goyette, Rajinikanth Rajagopal
Summary: This study investigated mono-digestion of ammonia-rich chicken manure in a high-solids anaerobic digester at low temperature using liquid-inoculum. The results showed that acclimation to a high concentration of TKN facilitated manure digestion and operating at low temperature prevented the accumulation of free-ammonia.
RESOURCES CONSERVATION & RECYCLING ADVANCES
(2023)
Article
Biotechnology & Applied Microbiology
Kuzhandaivel Jayaprakash, Atieh Osama, Rajinikanth Rajagopal, Bernard Goyette, Obulisamy Parthiba Karthikeyan
Summary: This review summarizes multiple alternate secondary sources for fiber production, with a case study using banana plant residual biomass. The different processing methods, as well as the development and analysis of an integrated biorefinery approach, are compared for repurposing agricultural residual biomass.
BIOENGINEERING-BASEL
(2022)
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
