Enhanced efficiency of AgAlO < sub > 2 < /sub > /g-C < sub > 3 < /sub > N < sub > 4 < /sub > binary composite to degrade organic pollutants for environmental remediation under visible light irradiation
This study explores the utilization of semiconductor-based photocatalysts for environmental remediation through photocatalytic degradation, harnessing solar energy for effective treatment. The primary focus is on the application of photocatalytic technology for the degradation of 2-chlorophenol and methylene blue, critical pollutants requiring remediation. The research involves the synthesis of binary AgAlO2/g-C3N4 nanocomposites through an exchange ion method, subsequent calcination, and sonication. This process enhances the transfer of photogenerated electrons from AgAlO2 to g-C3N4, resulting in a significantly increased...
Source: Chemosphere - April 25, 2024 Category: Chemistry Authors: Bobby Refokry Oeza Naveed Ahmad Kim Hoong Ng None Widyastuti Cheru Talbachew Haile Chung Feng Jeffrey Kuo Source Type: research
Inhibition of human drug transporter activities by succinate dehydrogenase inhibitors
Chemosphere. 2024 Apr 23:142122. doi: 10.1016/j.chemosphere.2024.142122. Online ahead of print.ABSTRACTSuccinate dehydrogenase inhibitors (SDHIs) are widely-used fungicides, to which humans are exposed and for which putative health risks are of concern. In order to identify human molecular targets for these environmental chemicals, the interactions of 15 SDHIs with activities of main human drug transporters implicated in pharmacokinetics were investigated in vitro. 5/15 SDHIs, i.e., benzovindiflupyr, bixafen, fluxapyroxad, pydiflumetofen and sedaxane, were found to strongly reduce activity of the renal organic anion transp...
Source: Chemosphere - April 25, 2024 Category: Chemistry Authors: Marie Kerhoas Marc Le V ée Jennifer Carteret Elodie Jouan Valentin Tastet Arnaud Bruy ère Laurence Huc Olivier Fardel Source Type: research
Chronic cypermethrin induced toxicity and molecular fate assessment within common carp (Cyprinus carpio) using multiple biomarkers approach and its novel therapeutic detoxification
Chemosphere. 2024 Apr 23:142096. doi: 10.1016/j.chemosphere.2024.142096. Online ahead of print.ABSTRACTCypermethrin (CYP) is a chemical of emerging concern which has persistent and bioaccumulating impacts as it can be found extensively in freshwater ecosystem and agricultural products. It has exposure risk and toxic effects over human edible fish, as common carp. Four groups were designed for toxicity assessment and detoxification approach: control group (CL), CYP exposure group (CYP), CYP + 10% M. oleifera leaves and 10% M. oleifera seeds (CMO group), 10% M. oleifera leaves and 10% M. oleifera seeds (MO group). Trial peri...
Source: Chemosphere - April 25, 2024 Category: Chemistry Authors: Rabia Tahir None Samra Abdul Ghaffar Fozia Afzal Izhar Hyder Qazi Liulan Zhao Haoxiao Yan He Kuo Hamid Khan Song Yang Source Type: research
Alleviating binary toxicity of polystyrene nanoplastics and atrazine to Chlorella vulgaris through humic acid interaction: Long-term toxicity using environmentally relevant concentrations
In this study, microalgae Chlorella vulgaris (C. vulgaris) were simultaneously exposed to environmental concentrations of amino-functionalized polystyrene nanoplastics (PS-NH2; 0.05, 0.1, 0.2, 0.3 and 0.4 mg/L) and the world's second most used pesticide, the herbicide atrazine (ATZ; 10 μg/L), in the absence and presence of humic acid (HA; 1 mg/L) for 21 days. Due to the low concentrations of PS-NH2, the majority of them could not cause a significant difference in the end-points of biomass, chlorophylls a and b, total antioxidant, total protein, and superoxide dismutase and malondialdehyde compared to the control group (p&...
Source: Chemosphere - April 25, 2024 Category: Chemistry Authors: Mehdi Khoshnamvand Dongmei You Yafang Xie Yixiao Feng Marriya Sultan De-Sheng Pei Ailing Fu Source Type: research
Attuning doped ZnO-based composites for an effective light-driven mineralization of pharmaceuticals via PMS activation
In this study, we investigated the effect of doping ZnO nanoparticles with either copper, gallium or indium on the structure, morphology, photophysical properties and photocatalytic mineralization of pharmaceuticals. Their architecture was further improved through the fabrication of composites, pairing the best performing doped ZnO with either BaFe12O19 or nickel nanoparticles. Their suitability was tested on a complex 60-ppm multi-pollutant solution (tetracycline, levofloxacin and lansoprazole). The activation strategy combined photocatalysis with peroxymonosulfate (PMS) as an environmentally friendly source of highly oxi...
Source: Chemosphere - April 25, 2024 Category: Chemistry Authors: Roger Bujald ón Majdi Benamara Ramzi Dhahri Elvira G ómez Albert Serr à Source Type: research
Construction of BiOCl/bismuth-based halide perovskite heterojunctions derived from the metal-organic framework CAU-17 for effective photocatalytic degradation
Chemosphere. 2024 Apr 23:142114. doi: 10.1016/j.chemosphere.2024.142114. Online ahead of print.ABSTRACTThe designed synthesis of an S-scheme heterojunction has possessed a great potential for improving photocatalytic wastewater treatment by demostrating increased the photoredox capacity and improved the charge separation efficiency. Here, we introduce the fabrication of a heterojunction-based photocatalyst comprising bismuth oxychloride (BiOCl) and bismuth-based halide perovskite (BHP) nanosheets, derived from metal-organic frameworks (MOFs). Our composite photocatalyst is synthesized through a one-pot solvothermal strateg...
Source: Chemosphere - April 25, 2024 Category: Chemistry Authors: Ai Le Hoang Pham Vinh Huu Nguyen Taeyoon Lee Van Cuong Nguyen Trinh Duy Nguyen Source Type: research
Exposure to hexafluoropropylene oxide trimer acid (HFPO-TA) impairs 5-HT metabolism by impacting the brain-gut axis in mice
Chemosphere. 2024 Apr 23:142035. doi: 10.1016/j.chemosphere.2024.142035. Online ahead of print.ABSTRACTHexafluoropropylene oxide trimer acid (HFPO-TA) has been found to cause hepatotoxicity, lipotoxicity, and cytotoxicity. However, the effects of HFPO-TA exposure on nervous system toxicity are still unclear. Here, six-week-old male C57BL/6J mice were treated with 2, 20, and 200 μg/L HFPO-TA for six weeks. The untargeted transcriptome analysis was employed to identify differentially expressed mRNAs in the tissue of mouse hippocampi. Then, the levels of neurotransmitters were detected by ELISA analysis in hippocampal and co...
Source: Chemosphere - April 25, 2024 Category: Chemistry Authors: Xiaoxian Xie Lei Sun Haoshen Xu Mengya Zhang Jiafeng Zhou Shulin Du Zhengwei Fu Zezhi Li Source Type: research
Factors impacting human exposure to legacy and emerging contaminants in residential dust in Beijing, China: Characteristics of indoor microenvironment
In this study, the occurrence, human exposure, and related influencing factors of several classes of legacy and emerging contaminants in residential dust across Beijing were investigated, including per- and polyfluoroalkyl substances (PFASs) and three types of flame retardants (FRs), i.e., organophosphate esters (OPEs), polybrominated diphenyl ethers (PBDEs), and novel halogenated FRs (NHFRs). OPEs (median: 3847 ng/g) were the most abundant group, followed by PBDEs (1046 ng/g) and NHFRs (520 ng/g). PFASs (14.3 ng/g) were one to two orders of magnitude lower than FRs. The estimated daily intakes of these contaminants were r...
Source: Chemosphere - April 25, 2024 Category: Chemistry Authors: Mi Tian Fan Gao Yuan Zeng Xiulan Zhang Chuan Yang Jiaxuan Guo Yuyang Zhao Shejun Chen Source Type: research
Ultrastructural, molecular and haemato-immunological changes: multifaceted toxicological effects of microcystin-LR in rohu, Labeo rohita
Chemosphere. 2024 Apr 22:142097. doi: 10.1016/j.chemosphere.2024.142097. Online ahead of print.ABSTRACTNo water body is resilient to afflicts of algal bloom, if goes unmanaged. With the increasing trend of intensification, eutrophication and climate change, Labeo rohita (rohu) is highly anticipated to suffer from the deleterious effects of bloom and eventually its toxins. A comprehensive study was conducted to understand the toxicopathological effects of microcystin-LR (MC-LR) in rohu following intraperitoneal injection of 96 h-LD50 dose i.e., 713 μg kg-1. Substantial changes in micro- and ultrastructural level were evide...
Source: Chemosphere - April 24, 2024 Category: Chemistry Authors: Snatashree Mohanty Anirban Paul Sagar Banerjee K V Rajendran Gayatri Tripathi Pratap Chandra Das Pramoda Kumar Sahoo Source Type: research
Low-biofouling membrane bioreactor: Effects of cis-2-Decenoic acid addition on EPS and biofouling mitigation
This study assessed the effectiveness of CDA in controlling biofouling in membrane bioreactors (MBRs), essential for wastewater treatment. By modulating microbial signaling, CDA mitigated biofilm formation without hindering microbial growth. Analysis using Confocal Laser Scanning Microscopy (CLSM) revealed structural alterations in the biofilm, reducing biomass and thickness upon CDA application. Moreover, examination of extracellular polymeric substances (EPS) highlighted a decrease in total EPS, particularly effective polysaccharides. In addition, the possibility of shifting from high molecular weight EPS to low molecula...
Source: Chemosphere - April 24, 2024 Category: Chemistry Authors: Wonjung Song Chehyeun Kim Jihoon Lee Jiwon Han Zikang Jiang Jaehyeok Kim Yongmin Park Sunkyung An Jihyang Kweon Source Type: research
Synergetic conditioning via oxalic acid enhanced Fe < sup > 2+ < /sup > /CaO < sub > 2 < /sub > and skeleton construct to achieve deep dewatering of sewage sludge
This study deepened the understanding of OA enhanced Fenton-like system effects on sludge dewaterability and proposed a cost-effective and synergistic waste treatment strategy in sludge dewatering.PMID:38657689 | DOI:10.1016/j.chemosphere.2024.142115 (Source: Chemosphere)
Source: Chemosphere - April 24, 2024 Category: Chemistry Authors: Yun Xiong Jiahao Lai Zonghao Liu Min Song Source Type: research
Thyroid and sex hormone disrupting effects of DEHTP at different life stages of zebrafish (Danio rerio)
Chemosphere. 2024 Apr 22:142105. doi: 10.1016/j.chemosphere.2024.142105. Online ahead of print.ABSTRACTDi(2-ethylhexyl) terephthalate (DEHTP) is an alternative plasticizer widely used in numerous consumer products, replacing di(2-ethylhexyl) phthalate (DEHP). Hence, DEHTP has been frequently detected in the environment and humans. As a structural isomer and functional analog of DEHP, DEHTP is a suspected endocrine disruptor. Here, we evaluated DEHTP thyroid-disrupting effects in embryo-larval and adult male zebrafish. We also investigated sex hormone disruption in the adult zebrafish. After 5- and 7-day exposure to DEHTP, ...
Source: Chemosphere - April 24, 2024 Category: Chemistry Authors: Yunchul Ihn Yoojin Cho Yura Lee Hyesun Seok Jin-Su Oh Hyo-Bang Moon Kyungho Choi Source Type: research
Feammox bacterial biofilm formation in HFMB
Chemosphere. 2024 Apr 22:142072. doi: 10.1016/j.chemosphere.2024.142072. Online ahead of print.ABSTRACTNitrogen pollution has been increasing with the development of industrialization. Consequently, the excessive deposition of reactive nitrogen in the environment has generated the loss of biodiversity and eutrophication of different ecosystems. In 2005, a Feammox process was discovered that anaerobically metabolizes ammonium. Feammox with the use of hollow fiber membrane bioreactors (HFMB), based on the formation of biofilms of bacterial communities, has emerged as a possible efficient and sustainable method for ammonium r...
Source: Chemosphere - April 24, 2024 Category: Chemistry Authors: Ámbar Cerda Macarena Gonzalez Carolina Rodr íguez Heylin Gonz ález Jennyfer Serrano Eduardo Leiva Source Type: research
Carboxymethylcellulose sodium-derived carbon aerogels for solar-driven water purification
We describe a novel method to prepare reusable and efficient photothermal energy conversion materials for water purification. Using crosslinked xerogels as precursor, the porous and interconnected carboxymethylcellulose sodium-derived carbon aerogels (abbreviated as CCAs) with good hydrophilic performance and strong light absorption capability are firstly fabricated through pyrolysis. Photothermal measurement results show that CCA15 exhibit excellent solar steam generation rate of 2.31 kg m-2 h-1 with high light-to-vapor conversion efficiency of 95.9% under 1 sun illumination. In addition, the feasible application of CCA15...
Source: Chemosphere - April 24, 2024 Category: Chemistry Authors: Chaoming Wang Peng Zhu Zheng Huang Lei Zhang Shuaiao Xie Zhiyong Qi Source Type: research
Ecotoxicological strategies employing biochemical markers and organisms to monitor the efficacy of malathion photolysis treatment
The objective of this study was to assess the photolysis-mediated degradation of malathion in standard and commercial formulations, and to determine the toxicity of these degraded formulations. Degradation tests were carried out with 500 μg L-1 of malathion and repeated three times. The initial and residual toxicity was assessed by using Lactuca sativa seeds for phytotoxicity, Stegomyia aegypti larvae for acute toxicity, and Stegomyia aegypti mosquitoes (cultivated from the larval stage until emergence as mosquitoes) to evaluate the biochemical markers of sublethal concentrations. For the standard formulations the photoly...
Source: Chemosphere - April 24, 2024 Category: Chemistry Authors: Rafaela Imoski La ís Jarenko da Cruz Angela Maria Palacio-Cort és Ana Marta Schafaschek Eric Schwamberger Pamella Regina Mariotti Andre Luis Bichibichi Borges Fernando Rodrigues-Silva Lizi ê Daniela Tentler Prola Mario Ant ônio Navarro da Silva Adrian Source Type: research
