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Priority Screening of Contaminants of Emerging Concern (Cecs) in Surface Water: Comparing Cell-Based Bioassays and Exposure-Activity Ratios (Ears)

SSRN

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SSRN 2024年

作者： Heuvel, John Patrick Vanden Granda, Megan Ferguson, Francesca M. Glaberman, Scott R. Preisendanz, Heather E. Department of Veterinary and Biomedical Sciences Penn State University University ParkPA United States INDIGO Biosciences Inc. 3006 Research Drive State CollegePA16801 United States Institute for Sustainable Agricultural Food and Environmental Science The Pennsylvania State Univ. University ParkPA16802 United States Intercollege Graduate Degree Program in Ecology Penn State University University ParkPA United States Department of Entomology Penn State University University ParkPA United States Department of Agricultural and Biological Engineering Penn State University University ParkPA United States George Mason University Department of Environmental Science and Policy FairfaxVA United States Department of Veterinary and Biomedical Sciences Penn State University 122 Agricultural Sciences and Industry Building University ParkPA16802 United States

In this study, we compared a wide range of cell-based bioassays to the use of chemical analysis followed by exposure-activity ratio (EAR) and Toxicological Prioritization index (ToxPi) for prioritizing chemicals, sites, and hazard concerns in water samples. Surface water samples were collected from nine sites in three Central Pennsylvania streams and analyzed for a targeted list of compounds of emerging concern (CECs), including pesticides, personal care products, and pharmaceuticals. Cell-based reporter assays evaluated human and zebrafish molecular initiating events (MIEs) in endocrine and metabolic disruption, altered lipid metabolism, and oxidative stress. Bioassays showed that 29 out of 40 assays had at least one site with activity over the limit of detection. The receptors that exhibited the highest number of samples above the effect-based trigger (EBT) values that would be expected to cause toxicity were Aryl hydrocarbon receptor (AhR, human and zebrafish), Pregnane X Receptor (PXR), Estrogen Receptor-beta (ERB), and Androgen Receptor (AR). Characterizing the collection sites by their bioactivity aligned closely with the stream in which samples were collected, with the three sites in Warriors Mark Run, three in Halfmoon, and three in Spruce Run more similar than sites from the other streams. The sum of all EARs for each chemical indicated that the pharmaceutical Carbamazepine and the pesticides Carbaryl and Atrazine posed the greatest concern. However, predicted activity and site prioritization based on individual chemical analysis and calculated EAR were different than those measured by bioassay, indicating that biologically active chemicals are present in the samples that were not included in the targeted analytes. Taken together, these data show that chemical analysis and EAR analysis are beneficial for prioritization of chemicals, whereas mechanism-based bioassays are more inclusive of known as well as unknown chemical contaminants and thus of more use fo

关键词： Water quality

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Factors Affecting Waste Generation: Household Study in Palangka Raya City, Central Kalimantan 4

Factors Affecting Waste Generation: Household Study in Palan...

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4th International Conference on Energy, Environment, Epidemiology and Information System, ICENIS 2019

作者： Herianto, H. Maryono, M. Budihardjo, Mochamad Arief Program in Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Urban Regional Planning Faculty of Engineering Diponegoro University Semarang Indonesia Department of Environmental Engineering Faculty of Engineering Diponegoro University Semarang Indonesia

Domestic waste from households is the biggest contributor to municipal waste management. Palangka Raya City is one of the cities that faces waste problems due to lack of awareness of the citizens. The culture of dumping garbage into river bodies is common for residents who live along the river banks. This study aims to determine waste generation and the factors affecting waste generation of household in the Palangka Raya City. The measurement of waste generation was carried out in accordance with the guidelines of SNI 19-3964-1994, while the variables that are suspected to influence the waste generation were collected by the questionnaire. To find out the factors affecting waste generation, data were analyzed by multiple linear regression. Based on the results of research conducted on 48 respondents obtained household waste generation in Palangka Raya City is 0.33 kg/person/day, while significant factors affecting waste generation are concern for the environment and income levels at a 95% confidence level and the number of family members at the 99% confidence level. While the recycling knowledge, education level, house size and installed electrical power did not significantly affect waste generation. With this information, it can be calculated the needs of TPS, the needs of the transport fleet, the needs of cleaning staff and plans for controlling household waste generation in the Palangka Raya City. © The Authors, published by EDP sciences, 2019.

关键词： Waste management

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Cumin essential oil-infused chitosan-PVA composite coatings: An innovative approach for developing antimicrobial, antioxidant and functionalized polyethylene films

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International journal of biological macromolecules 2025年

作者： Fayezeh Mohammad Reza Khani Mahmood Naseri Sedigheh Babaei Seyed Mohammad Hashem Hosseini Shahriyar Valizadeh Department of Natural Resources and Environmental Engineering School of Agriculture Shiraz University Shiraz Iran. Department of Natural Resources and Environmental Engineering School of Agriculture Shiraz University Shiraz Iran. Electronic address: mnaseri@shirazu.ac.ir. Department of Food Science & Technology School of Agriculture Shiraz University Shiraz Iran. Department of Natural Resources and Environmental Engineering School of Agriculture Shiraz University Shiraz Iran Food and Nutritional Sciences Program North Carolina Agricultural and Technical State University Greensboro NC USA.

This study introduces a green and innovative approach to functionalizing low-density polyethylene (LDPE) films by laminating bioactive composite coatings of chitosan-polyvinyl alcohol (PVA) infused with Cumin essential oil (CEO). The functionalized films were thoroughly characterized for their physicochemical, mechanical, antimicrobial, and antioxidant properties. Incorporating the CEO into the chitosan-PVA matrix significantly enhanced the films' tensile strength, reduced moisture content, and improved water vapor barrier properties, making them highly suitable for food packaging applications. Scanning electron microscopy (SEM) revealed a compact and non-porous structure in the modified LDPE films. At the same time, Fourier-transform infrared spectroscopy (FTIR) confirmed strong intermolecular interactions among the coating components and CEO. The chitosan-PVA-CEO-coated LDPE films (PCE) demonstrated remarkable antimicrobial activity against Staphylococcus aureus and Escherichia coli, increasing efficacy over time. Furthermore, the PCE films exhibited exceptional antioxidant properties, achieving a free radical scavenging capacity of 54.36 %, attributed to the synergistic effects of chitosan and CEO. These findings highlight the potential of this innovative bioactive coating as a sustainable and effective solution for enhancing the preservation of perishable products, aligning with the growing demand for eco-friendly and functional packaging materials.

关键词： Chitosan Cumin Functionalization Lamination Polyethylene Polyvinyl alcohol

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Insights on the influence of natural co-contaminants on the photocatalytic performance of biochar supported p-n heterojunction photocatalyst in an aqueous media

Cleaner Water

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Cleaner Water 2025年 4卷

作者： Saptarshi Ghosh Manoranjan Sahu Aerosol and Nanoparticle Technology Laboratory Environmental Science and Engineering Department Indian Institute of Technology Bombay Mumbai 400076 India Inter-Disciplinary Program in Climate Studies Indian Institute of Technology Bombay Mumbai 400076 India Centre for Machine Intelligence and Data Science Indian Institute of Technology Bombay Mumbai 400076 India

In last few decades, photocatalysis have been extensively studied in a simulated wastewater under laboratory conditions to degrade wide range of organic pollutants. To transfer this technology into a large scale, several approaches have been made focusing on developing novel photocatalyst for maximizing the generation of reactive species and efficient photocatalytic reactor for maximizing photon usage. However, there are some fundamental issues exist with the presence of natural co-contaminants such as competitive ions and natural organic matter (NOM) which can significantly reduce efficiency of the photocatalytic process. Hence, this study investigated role of competitive ions and NOM on photocatalytic oxidation of DMP using p-n heterojunction photocatalyst (O 2 -TiO 2 /CuO) decorated on biochar. The study revealed that competitive ions showed quenching effect towards photogenerated charged pairs and significantly reduces degradation efficiency. Similarly, presence of NOM in small amount could enhance or does not have substantial impact on the removal efficiency of DMP. However, at higher NOM concentration, DMP removal dropped significantly by screening of photons, blocking of adsorption sites of the catalyst and scavenging of positive holes (h + ). In addition, Electron Spin Resonance (ESR) analysis was performed as an evidence for the generation of radicals and quenching experiment was conducted to identify the major contributing radical in the degradation process among multiple radicals generated from the photocatalysis. The findings revealed that among different reactive species OH • is the dominant species in the degradation process and O 2 - • has least contribution to the degradation of DMP.

关键词： Co-contaminants P-n heterojunction Photocatalysis Reactive Oxygen Species Scavengers

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Electromagnetic-polarization selective composites with quasi-1D van der Waals metallic fillers

arXiv

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arXiv 2021年

作者： Barani, Zahra Kargar, Fariborz Ghafouri, Yassamin Baraghani, Saba Sudhindra, Sriharsha Mohammadzadeh, Amirmahdi Salguero, Tina T. Balandin, Alexander A. Center Department of Electrical and Computer Engineering University of California RiversideCA92521 United States Department of Chemical and Environmental Engineering University of California RiversideCA92521 United States Department of Chemistry University of Georgia AthensGA30602 United States Material Science and Engineering Program University of California RiversideCA92521 United States

We report on the preparation of flexible polymer composite films with aligned metallic fillers comprised of atomic chain bundles of the quasi-one-dimensional (1D) van der Waals material tantalum triselenide, TaSe3. The material functionality, embedded at the nanoscale level, is achieved by mimicking the design of an electromagnetic aperture grid antenna. The processed composites employ chemically exfoliated TaSe3 nanowires as the grid building blocks incorporated within the thin film. Filler alignment is achieved using the "blade coating" method. Measurements conducted in the X-band frequency range demonstrate that the electromagnetic transmission through such films can be varied significantly by changing the relative orientations of the quasi-1D fillers and the polarization of the electromagnetic wave. We argue that such polarization-sensitive polymer films with quasi-1D fillers are applicable to advanced electromagnetic interference shielding in future communication systems. Copyright © 2021, The Authors. All rights reserved.

关键词： Van der Waals forces

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UNP Extinct Metric for Bilih Fish (Mystacoleucus padangensis Bleeker) 1

UNP Extinct Metric for Bilih Fish (Mystacoleucus padangensis...

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1st International Conference on environmental sciences, ICES 2018

作者： Razak, Abdul Ganefri Barlian, Eri Dewata, Indang Biology Department FMIPA Universitas Negeri Padang Indonesia Department of Electrical Engineering Faculty of Engineering Universitas Negeri Padang Indonesia Environmental Science Study Program Postgraduate Program Universitas Negeri Padang Indonesia

This paper write about UNP Extinc Metric. It is new approach and methods how to calculate extinc condition for wild animals especially bilih fish from Lake Singkarak. We introduce new criteria and ombine to seven categories from IUCN. For bilih fish we can calculate number extinc 49 and the meaning is endangered We conclude after that result we can conserve bilih fsh soon as soon for our life in biosfer. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Fish

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Comprehensive energy, economic, and environmental analysis of a hybrid photovoltaic–thermal (PVT) heat pump system

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Energy 2025年 331卷

作者： Hugo Arnesson Andreas V. Olympios Asmaa A. Harraz Jingyuan Xu Institute for Microstructure Technology Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany PV Technology Laboratory Department of Electrical and Computer Engineering University of Cyprus Nicosia Cyprus PHAETHON Centre of Excellence for Intelligent Efficient and Sustainable Energy Solutions Nicosia Cyprus Environmental Engineering Program University of Science and Technology Zewail City of Science and Technology Egypt

This study investigates a parallel indirect-expansion solar-assisted heat pump (SAHP) system integrating photovoltaic–thermal (PVT) collectors to meet domestic space heating, hot water, and appliance electricity demands for a typical household in Germany. A transient mathematical model captures the interdependencies between heat and electricity flows, enabling evaluation of thermodynamic, economic, and environmental performance across 54 heat pump designs with 3 refrigerants. The SAHP is compared to standalone heat pumps and natural gas boilers under varying electricity and natural gas prices. Results indicate that the SAHP system can cover over one-third of annual heating demand and half of appliance electricity demand using solar energy, with Munich achieving the highest solar coverage (39 %). HFC-32 (R32) outperforms propane, which in turn outperforms R410A, with levelized costs of energy, in electricity equivalents, of 0.272, 0.276 and 0.283 Euro/kWh, respectively. The SAHP system proves more cost-effective than standalone heat pumps or natural gas boilers unless energy prices are exceptionally low. Optimizing water tank designs for lower-temperature operation could further enhance SAHP competitiveness against PV-driven heat pumps.

关键词： Solar-assisted heat pump Energy–economic–environmental (3E) Photovoltaic–thermal (PVT) Propane refrigerant R32 refrigerant

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A growth model for water distribution networks with loops

arXiv

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arXiv 2021年

作者： Sugishita, Kashin Abdel-Mottaleb, Noha Zhang, Qiong Masuda, Naoki Department of Mathematics State University of New York at Buffalo BuffaloNY14260-2900 United States Department of Transdisciplinary Science and Engineering Tokyo Institute of Technology Tokyo152-8550 Japan Department of Civil and Environmental Engineering University of South Florida TampaFL33620 United States Computational and Data-Enabled Science and Engineering Program State University of New York at Buffalo BuffaloNY14260-5030 United States Faculty of Science and Engineering Waseda University Tokyo169-8555 Japan

Water distribution networks (WDNs) expand their service areas over time. These growth dynamics are poorly understood. One facet of WDNs is that they have loops in general, and closing loops may be a functionally important process for enhancing their robustness and efficiency. We propose a growth model for WDNs which generates networks with loops and is applicable to networks with multiple water sources. We apply the proposed model to four empirical WDNs to show that it produces networks whose structure is similar to that of the empirical WDNs. The comparison between the empirical and modeled WDNs suggests that the empirical WDNs may realize a reasonable balance between cost, efficiency, and robustness in terms of the network structure. We also study the design of pipe diameters based on a biological positive feedback mechanism. Specifically, we apply a model inspired by Physarum polycephalum to find moderate positive correlations between the empirical and modeled pipe diameters. The difference between the empirical and modeled pipe diameters suggests that we may be able to improve the performance of WDNs by following organizing principles of biological flow networks. Copyright © 2021, The Authors. All rights reserved.

关键词： Water distribution systems

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Novel insights into curcumin adsorption: Kinetics and mechanisms of decolorization using Pondoh snake fruit seed biochar

Next Research

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Next Research 2025年第2期2卷

作者： Wilna Iznilillah Mohamad Ali Fulazzaky Arti Hastuti Asep Bayu Dani Nandiyanto Meli Fiandini Khalida Muda Faculty of Halal Food Science Universitas Djuanda Jalan Tol Ciawi No 1 Ciawi Bogor 16720 Indonesia Study Program of Environmental Science Faculty of Engineering and Science Universitas Ibn Khaldun Bogor Jalan Sholeh Iskandar Kedungbadak Bogor 16162 Indonesia Faculty of Mathematics and Natural Science Education Universitas Pendidikan Indonesia Jalan Dr Setiabudhi No 229 Bandung 40154 Indonesia Faculty of Civil Engineering Universiti Teknologi Malaysia 81310 UTM Skudai Johor Bahru Malaysia

Utilizing natural waste materials to decolorize synthetic and natural dyes offers a promising solution for mitigating environmental pollution. The adsorption isotherms and decolorization kinetics of curcumin onto Pondoh snake fruit seed (PSFS) biochar were predicted using ten isotherm models and the Generalized Fulazzaky (GF) equations, respectively, providing insights into the behavioral characteristics of the adsorption process. Simulations using the Harkin-Jura model demonstrated a good fit, with R ² values exceeding 0.6909 across PSFS biochar granular sizes of 13.65, 25.49, and 65.13 μm, indicating capillary condensation and multilayer adsorption, which validates the GF equations’ applicability. Applying the GF equations to adsorption kinetics simulations showed that declining external mass transfer (EMT) rates were offset by increasing internal mass transfer (IMT) rates. The increase in IMT rates ([ k L a ] d < 0.0 min −1 ) was less pronounced than the decrease in EMT rates ([ k L a ] f > 0.0 min −1 ), suggesting IMT governs curcumin adsorption’s rate-limiting step. PSFS biochar with an average granular size of 25.49 μm proved most effective for decolorizing 100 mg L −1 curcumin, exhibiting a global mass transfer rate range of 0.0020 to 0.0079 min −1 . Utilizing PSFS biochar for curcumin removal contributes to sustainable environmental remediation by advancing green technologies and informing dye effluent management strategies.

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Selective Co2–To–Co Photoreduction Over Orthophosphate Semiconductor Via Ag3po4 Quantum Dots Decorated Sns2 Nanosheets Direct Z-Scheme Heterojunction

SSRN

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SSRN 2022年

作者： Fu, Fang-Yu Fan, Chi-Chan Qorbani, Mohammad Huang, Chih-Yang Kuo, Ping-Chun Hwang, Jih-Shang Shu, Guo-Jiun Chang, Sue-Min Wu, Heng-Liang Wu, Chih-I Chen, Kuei-Hsien Chen, Li-Chyong Graduate Institute of Photonics and Optoelectronics National Taiwan University Taipei10617 Taiwan Center for Condensed Matter Sciences National Taiwan University Taipei10617 Taiwan Institute of Optoelectronic Science National Taiwan Ocean University Keelung202 Taiwan Center of Atomic Initiative for New Materials National Taiwan University Taipei10617 Taiwan Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei11529 Taiwan International Graduate Program of Molecular Science and Technology National Taiwan University Taipei10617 Taiwan Department of Materials and Mineral Resources Engineering National Taipei University of Technology Taipei106 Taiwan Institute of Environmental Engineering National Yang Ming Chiao Tung University Hsinchu30010 Taiwan Department of Physics National Taiwan University Taipei10617 Taiwan

Direct Z-scheme heterojunctions are widely used for photocatalytic water splitting and CO2 reduction by facilitating well-separated photogenerated charge carriers and spatial isolation of redox reactions. Here, using a facile two-step hydrothermal and ion-exchange methods, we uniformly decorate Ag3PO4 quantum dots with an average characteristic size of ~10.0 nm over SnS2 nanosheets to form a 0D/2D heterojunction. The direct Z-scheme mechanism is confirmed by the following experiments: (i) X-ray and ultraviolet photoelectron spectroscopies;(ii) Photodeposition of Pt and PbO2 nanoparticles on reduction and oxidation sites, respectively;and (iii) In-situ X-ray photoelectron spectroscopy. Owing to the photoreduction properties of Ag3PO4, Z-scheme charge transfer, and efficient exciton dissociation, an optimized heterojunction shows a high CO2-to-CO photoreduction yield of 18.3 μmol g-1 h-1 with an illustrious selectivity of ~95% under visible light illumination. Moreover, in-situ diffuse reflectance infrared Fourier transform spectroscopy demonstrates that the reduction pathway goes through the COOH* intermediate. © 2022, The Authors. All rights reserved.

关键词： Semiconductor quantum dots

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