Article
Chemistry, Multidisciplinary
Xiushang Xu, Amy L. Vonder Haar, Rengo Yoshioka, Qizheng Zhang, Serhii Vasylevskyi, Andrew J. Musser, Akimitsu Narita
Summary: A benzo[rst]pentaphene derivative, BPP-MeOPA, was synthesized and characterized by NMR and single-crystal X-ray analysis. Investigation of its photophysical properties, including transient absorption spectroscopy, revealed improved absorption and emission features from an S-1 state with excitonic and charge-transfer character by introducing MeOPA groups.
CHEMICAL COMMUNICATIONS
(2023)
Article
Environmental Sciences
Diptimayee Behera, S. Krishnakumar, Ambili Anoop
Summary: This study assessed the distribution of saturated hydrocarbons and polycyclic aromatic hydrocarbons in sediment samples from Mandapam island groups in the Gulf of Mannar, India. Differentiation between biogenic and anthropogenic sources was achieved using hydrocarbon distribution patterns and n-alkane indices. The results indicate high petroleum contamination in areas associated with shipping activities, tourism, and those located near the mainland and accessible portions of the islands.
MARINE POLLUTION BULLETIN
(2023)
Article
Chemistry, Organic
Yushi Ohno, Shogo Ando, Daisuke Furusho, Ryoyu Hifumi, Yuuya Nagata, Ikuyoshi Tomita, Shinsuke Inagi
Summary: Here, a facile and selective synthesis of cationic azatriphenylene derivatives was achieved through electrochemical intramolecular cyclization, where the key step involves atom-economical C-H pyridination without a transition-metal catalyst or an oxidant. This proposed strategy provides a practical approach for introducing cationic nitrogen (N (+)) into pi-electron systems, thus expanding the molecular design of N (+)-doped polycyclic aromatic hydrocarbons.
Article
Multidisciplinary Sciences
Yusuke Nakakuki, Takashi Hirose, Hikaru Sotome, Min Gao, Daiki Shimizu, Ruiji Li, Jun-Ya Hasegawa, Hiroshi Miyasaka, Kenji Matsuda
Summary: Helically twisted conductive nanocarbon materials are suitable for optoelectronic and electromagnetic molecular devices on the nanometer scale, showing a large effective conjugation length and ultrafast decay dynamics. The extended π-helicenes achieved a large effective conjugation length through helical fusion, leading to an absorption edge in the near-infrared region.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Marco E. Franco, Karla Johanning, Cole W. Matson, Ramon Lavado
Summary: Anthropogenic pollution can lead to evolutionary adaptations in organisms, affecting their metabolism of pollutants. This study found that pollution-adapted Gulf killifish populations had lower hepatic clearance of polycyclic aromatic hydrocarbons (PAHs), with differences between sexes and populations, indicating the significance of exposure and evolutionary history in shaping responses to pollution.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Meng Qiao, Weixiao Qi, Huijuan Liu, Jiuhui Qu
Summary: Oxygenated polycyclic aromatic hydrocarbons (OPAHs) have higher concentrations and toxicity in water environments, posing significant ecological risks to surface water ecosystems.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Chemistry, Physical
Thomas Liu, Baptiste Carles, Christine Elias, Claire Tonnele, Daniel Medina-Lopez, Akimitsu Narita, Yannick Chassagneux, Christophe Voisin, David Beljonne, Stephane Campidelli, Loic Rondin, Jean-Sebastien Lauret
Summary: In this study, we conducted single-molecule spectroscopy at cryogenic temperatures to investigate the optical properties of graphene quantum dots (GQDs). We found that temperature has an effect on the spectral characteristics of GQDs, and we used density functional theory calculations to explain these observations. Additionally, we discovered that the vibrational features can serve as a unique fingerprint for identifying GQDs.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Huimin Zhong, Cong Jiang, Jiahui Zou, Guancheng Zhu, Yanyan Huang
Summary: In this study, CeO2-based porous carbonaceous frameworks (CeO2 PCFs) were used as antioxidant nanozymes to scavenge reactive oxygen species and absorb benzo[a]pyrene. CeO2 PCFs exhibited excellent superoxide dismutase-like and catalase-like activity, effectively eliminating superoxide radical, hydroxyl radical, and hydrogen peroxide. The 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) free radical scavenging assay confirmed the free radical scavenging ability of CeO2 PCFs. Furthermore, CeO2 PCFs with large surface area and porous structure efficiently adsorbed benzo[a]pyrene. The designed CeO2 PCFs can serve as new antioxidant nanozymes for scavenging reactive oxygen species and adsorbing polycyclic aromatic hydrocarbons (PAHs).
INORGANIC CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Justyna Szerement, Adam Kowalski, Jakub Mokrzycki, Lidia Marcinska-Mazur, Monika Mierzwa-Hersztek
Summary: Agricultural practices are a major cause of soil degradation, and adding carbon-rich materials to the soil is an effective solution for soil ecosystem sustainability and climate change mitigation. The study found that adding zeolite composites to fertilizers significantly reduced PAH levels in contaminated soils without compromising crop yields.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Rohi Masrat, Kowsar Majid
Summary: This study investigates the solubilization ability of mixed systems of polymers and surfactant micelles on PAHs. It is found that the addition of anionic polymers can accelerate the solubilization ability of cationic surfactant micelles, while delaying the solubilization ability of nonionic surfactant micelles. Additionally, the solubilization capacity of the mixed systems is enhanced as the polymer concentration increases within a certain range.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Review
Environmental Sciences
Jamie M. Dearnley, Charles Killeen, Rebecca L. Davis, Vince P. Palace, Gregg T. Tomy
Summary: This article reviews the metabolism and toxicity of polycyclic aromatic compounds (PACs) in fish and presents various methods for analyzing metabolite-containing bile. Recent environmental monitoring studies demonstrate the utility of this technique in assessing oil spill pollution, establishing baseline exposure, and evaluating pollution in urban waterways.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Zhiyang Lu, Weijun Tian, Surong Zhang, Meile Chu, Jing Zhao, Bingkun Liu, Kun Yang, Huimin Cao, Zhuo Chen
Summary: This study investigated the spatiotemporal distribution, source, and ecological risk of PAHs and SPAHs in surface sediments in Laizhou Bay. The results showed seasonal differences in concentrations of PAHs and SPAHs and a spatial distribution trend of estuary > coast > offshore. Combustion sources, including petroleum, coal, and biomass, were identified as the main contributors to PAHs and SPAHs. The risk level of PAHs was low-to-moderate, while SPAHs posed a moderate-to-high ecological risk.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Jiaxing Lu, Jian Zhang, Huijun Xie, Yuming Jing, Mingde Ji, Zhen Hu
Summary: In this study, a novel wastewater treatment process combining sequencing batch reactor, constructed wetland and microalgal membrane photobioreactor (BCM process) was proposed. The process achieved satisfactory removal of polycyclic aromatic hydrocarbons (PAHs) and their substituted derivatives (SPAHs), and significantly reduced bacterial toxicity and genotoxicity. Microalgae played an important role in ensuring water security.
Article
Environmental Sciences
Fatemeh Bateni, Ali Mehdinia, Lisa Lundin, Mehri Seyed Hashtroudi
Summary: This study investigated the distribution, sources, and ecological risk of 43 compounds of polycyclic aromatic hydrocarbons (PAHs) in the surficial sediments of the Persian Gulf. The results showed that the calculated total toxicity of PAHs in all stations in the Persian Gulf was below the lethal level for benthic organisms, while there was a risk of toxicity for benthic organisms in the Gulf of Oman. Nitrogenated and oxygenated derivatives did not pose a significant risk in the study area. Based on diagnostic ratios and source identification analysis, mixed sources (both petrogenic and pyrogenic) and pyrogenic sources were identified as the main sources of PAHs.
Article
Chemistry, Organic
Komal Mittal, Ashley V. Pham, Amanda G. Davis, Abigail D. Richardson, Clement De Hoe, Ryan T. Dean, Vi Baird, Ashley Ringer McDonald, Derik K. Frantz
Summary: At elevated temperatures, a strained, cyclic meta-quaterphenylene acetylene undergoes an intramolecular cyclization reaction to form benz[e]indeno[1,2,3-hi]acephenanthrylene. This reaction represents a Diels-Alder reaction at the 2-, 1-, 1 '-, and 2 '-positions of a biphenyl derivative, similar to the bay regions of perylene and other periacenes. Kinetics studies reveal that the reaction has a similar energy barrier to a concerted [4 + 2]-cycloaddition.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Plant Sciences
Vandana Sirotiya, Ankesh Ahirwar, Megha Mourya, Mohd Jahir Khan, Anshuman Rai, Rajeev Kwatra, Anil K. Sharma, Harish, Benoit Schoefs, Justine Marchand, Sunita Varjani, Vandana Vinayak
Summary: This article discusses the production of astaxanthin in microalgae under stress conditions and the possibility of utilizing industrial wastewater. By optimizing techniques and overcoming challenges, large-scale production of valuable biocompounds such as astaxanthin can be achieved, paving the way towards sustainable environmental development.
PHYTOCHEMISTRY REVIEWS
(2023)
Article
Plant Sciences
Arathi Sreenikethanam, Subhisha Raj, J. Rajesh Banu, Poornachandar Gugulothu, Sunita Varjani, Amit K. Bajhaiya
Summary: The demand for fossil fuels has led to their depletion and rising costs, causing serious environmental issues. This has driven research into finding renewable alternatives, particularly biofuels, with microalgae as a promising feedstock. However, challenges in large-scale production and commercialization persist, hindering the target of replacing conventional fuels. Novel strategies, such as lipid recovery systems, can be employed to overcome these limitations.
PHYTOCHEMISTRY REVIEWS
(2023)
Article
Environmental Sciences
Biswanath Saha, Visva Bharati Barua, Meena Khwairakpam, Izharul Haq, Ajay S. Kalamdhad, Sunita Varjani
Summary: The study investigates the impact of different heating pretreatment techniques on Lantana camara to accelerate hydrolysis and enhance biogas production. Autoclave pretreatment was found to be the most efficient. It increased solubilization (45.44%) and volatile fatty acids (56.75%) at 110 degrees C for 80 min compared to the untreated control. Cumulative methane production increased from 2895 mL in 7 weeks to 3656 mL in 5 weeks following autoclave pretreatment. Thermal pretreatment of Lantana camara breaks down the rigid lignocellulosic structure, improving hydrolysis and biogas production simultaneously. This is the first thermal pretreatment study conducted on Lantana camara for biogas production.
ENVIRONMENTAL RESEARCH
(2023)
Article
Thermodynamics
Phurba Tamang, Vinay Kumar Tyagi, Neelam Gunjyal, Ali Mohammad Rahmani, Rajesh Singh, Pradeep Kumar, Banafsha Ahmed, Pooja Tyagi, Rajesh Banu, Sunita Varjani, A. A. Kazmi
Summary: This study presents a novel free nitrous acid (FNA) pretreatment to enhance the biomethanation of wheat straw. The results showed that FNA pretreatment can effectively improve the biogas yield from wheat straw, and even co-digestion could achieve enhanced biogas yield over mono-digestion.
Review
Environmental Sciences
Prangya Ranjan Rout, Mukesh Goel, Daya Shankar Pandey, Caitlin Briggs, Venkatesa Prabhu Sundramurthy, Nirmalya Halder, Anee Mohanty, Sanjay Mukherjee, Sunita Varjani
Summary: Hydrothermal liquefaction (HTL) is a promising technique to recover biofuels and bioenergy from waste biomass with low energy and high moisture content. The generated wastewater during the HTL process (HTWW) contains valuable nutrients and organics, which can contaminate water bodies and result in the loss of bioenergy sources. Therefore, this study focuses on the treatment of HTWW for reduced environmental emission and potential bioenergy recovery. Various technologies for HTWW treatment and valorization, such as anaerobic digestion, microbial fuel cells (MFC), microbial electrolysis cell (MEC), and supercritical water gasification (SCWG), are reviewed and the importance of considering biomass characteristics in the selection of appropriate technology is emphasized. The integration of different methods and nutrient recovery approaches is suggested to maximize HTWW valorization and minimize environmental pollution.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Hoang Minh Giang, Nguyen Thi Huyen Nga, Eldon R. Rene, Hoang Ngoc Ha, Sunita Varjani
Summary: Biofilter (BF) is a versatile gas treatment technology for removing volatile organic compounds (VOCs) from contaminated gas streams. This study applied artificial neural networks (ANN) to determine the relationship between flow rate, pressure drop, inlet concentration, and removal efficiency in the BF treating gas-phase benzene and xylene mixtures. The model's performance was evaluated using a cross-validation method, and the results showed that the ANN model with a topology of 4-4-2 performed the best in predicting the removal efficiency of both pollutants.
ENVIRONMENTAL RESEARCH
(2023)
Review
Chemistry, Medicinal
Anagha Nair, Ankesh Ahirwar, Shashikala Singh, Reeta Lodhi, Aishwarya Lodhi, Anshuman Rai, Dipak A. Jadhav, Harish, Sunita Varjani, Gurpreet Singh, Justine Marchand, Benoit Schoefs, Vandana Vinayak
Summary: Natural astaxanthin is richer than synthetic astaxanthin, but cultivating it in photobioreactors is expensive and downstream processing techniques for solubilization are not cost-effective. As a result, the cost of astaxanthin is high, leading pharmaceutical and nutraceutical companies to opt for synthetic astaxanthin. This review discusses the chemical character of astaxanthin, more cost-effective cultivating techniques, and its bioavailability. Moreover, the antioxidant properties of this microalgal product against various diseases are discussed, which make it a promising drug for reducing inflammation and its consequences.
Article
Chemistry, Multidisciplinary
Sukanya Chakraborty, Vandana Sirotiya, Anshuman Rai, Sunita Varjani, Vandana Vinayak
Summary: Microalgae, especially diatoms, are considered as rich sources of crude oil for biofuel production. However, there are limitations for the entry of such biofuel into the commercial market due to various factors. High yield and low cost of production are crucial for selecting microalgae for biofuel production. Catalysts play an important role in the transesterification process to form biofuels, and their cost and availability need to be considered for large-scale, economical biofuel production towards green vehicles with zero carbon footprint and pollution.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Chemistry, Multidisciplinary
Sunita Varjani, Wei Yan, Anshu Priya, Fengxue Xin, Carol Sze Ki Lin
Summary: Food waste produces greenhouse gases when disposed of improperly, so it is important to find ways to manage and convert it into valuable products. This paper explores various bioprocesses for transforming food waste and discusses the production of value-added products like polyurethane foam and protective equipment. It also addresses the use of multiomics strategies for food waste management and identifies potential challenges in pollution control and the development of a circular bioeconomy.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2023)
Review
Agricultural Engineering
Mrinal Kashyap, Sukanya Chakraborty, Anamika Kumari, Anshuman Rai, Sunita Varjani, Vandana Vinayak
Summary: This article discusses the prospects and commercialization bottlenecks of microalgae biorefinery as a renewable energy resource. It proposes the possibilities of solving these challenges through up-scale cultivation, harvesting of algal biomass, and the application of integrated technology, life cycle assessment, and nanotechnology. The article also explores the ties between algal biorefineries and economic viability.
BIORESOURCE TECHNOLOGY
(2023)
Review
Agricultural Engineering
V. Godvin Sharmila, Vinay Kumar Tyagi, Sunita Varjani, J. Rajesh Banu
Summary: Wastewater disposal has negative impacts on aquatic and human life, and removing contaminants is essential. Utilizing biochar produced from the thermal decomposition of lignocellulosic biomass is a sustainable option. Biochar, with its unique characteristics such as high surface area, porous structure, oxygen functional groups, and low cost, has emerged as a potential catalyst for effective wastewater treatment.
BIORESOURCE TECHNOLOGY
(2023)
Editorial Material
Agronomy
Ravindran Balasubramani, Mukesh Kumar Awasthi, Sunita Varjani, Natchimuthu Karmegam
Review
Engineering, Environmental
K. S. D. Premarathna, Jayanta Kumar Biswas, Manish Kumar, Sunita Varjani, Bede Mickan, Pau Loke Show, Sie Yon Lau, Luis A. B. Novo, Meththika Vithanage
Summary: The blue-green city concept aims to reduce the impacts of stormwater by utilizing green infrastructure in metropolitan areas. The key types of blue-green infrastructures include wetlands, basins, green roofs, and permeable pavements. Bioretention systems, made of plants, mulch, and soil, have been enhanced by the use of biochar due to its adsorption capabilities. Although most studies on this topic have been conducted in labs, there is a need for field-based research to fully understand the efficiency of biochar-incorporated bioretention systems.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Mohd Jahir Khan, Ankesh Ahirwar, Vandana Sirotiya, Anshuman Rai, Sunita Varjani, Vandana Vinayak
Summary: The current study employs nanoengineering diatom and TiO2 NPs to form diatom-Si-TiO2 nanoengineered structures to fabricate a dye sensitized solar cell (DSSC) (DsTnas-DSSC). Different natural dyes extracted from plants and microalgae show significant power efficiencies in DSSC compared to conventional photosensitive ruthenium dye. The use of natural dye DsTnas-DSSC makes the fuel cell low cost and an alternative to conventional expensive, metal and synthetic dyes.
Article
Chemistry, Multidisciplinary
Megha Mourya, Mohd. J. Khan, Vandana Sirotiya, Ankesh Ahirwar, Benoit Schoefs, Justine Marchand, Sunita Varjani, Vandana Vinayak
Summary: In this study, the microalgae Haematococcus pluvialis were cultivated in wastewater using low-density polypropylene plastic air pillows (LDPE-PAPs) under different light stresses. The results showed that the biomass yield and carotenoid accumulation of H. pluvialis were significantly higher when exposed to broad-spectrum lights (BLs) compared to white LED lights (WLs). The presence of different carotenoids, including astaxanthin, and fatty acid methyl esters (FAMEs) were confirmed in the cells. The study also demonstrated the effectiveness of using recycled LDPE-PAPs in reducing chemical oxygen demand (COD) and making the overall process economical for commercial production of value-added products.
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)
