Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering最新文献

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Vertical transport velocity of fine particles of aluminum smelter emissions. 铝冶炼厂排放物细颗粒的垂直迁移速度。
IF 1.9 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2024-06-21 DOI: 10.1080/10934529.2024.2366084
N K Ryzhakova, N S Rogova, A L Borisenko, K A Tailasheva, E A Pokrovskaya
{"title":"Vertical transport velocity of fine particles of aluminum smelter emissions.","authors":"N K Ryzhakova, N S Rogova, A L Borisenko, K A Tailasheva, E A Pokrovskaya","doi":"10.1080/10934529.2024.2366084","DOIUrl":"10.1080/10934529.2024.2366084","url":null,"abstract":"<p><p>In this study, the average values of vertical velocity of particles emitted from an aluminum smelter in the surface layer of the atmosphere were estimated using a semi-empirical method. The method is based on regression analysis of the horizontal profile of pollutants measured along the selected direction using moss bioindicators. The selection of epiphytic mosses <i>Sanionia uncinata</i> was carried out in 2013 in the zone of influence of a metallurgical industry enterprise in the city of Kandalaksha, Murmansk region. The concentrations of As, Si, Ni, Zn, Ti, Cd, Na, Pb, Co, K, Ba, Ca, Mg, Mn, Sr, Fe, Al, V, Cr, Cu were determined using atomic emission spectrometry. The conducted assessments showed that the average particle velocity toward the Earth's surface, when considering large spatial and temporal scales, is tens of times higher than gravitational settling velocities.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"223-230"},"PeriodicalIF":1.9,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141432101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Precision forecasting of spray-dry desulfurization using Gaussian noise data augmentation and k-fold cross-validation optimized neural computing. 利用高斯噪声数据增强和 k 倍交叉验证优化神经计算,对喷雾干燥脱硫进行精确预测。
IF 2.1 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2024-02-19 DOI: 10.1080/10934529.2024.2317670
Robert Someo Makomere, Lawrence Koech, Hilary Limo Rutto, Sammy Kiambi
{"title":"Precision forecasting of spray-dry desulfurization using Gaussian noise data augmentation and k-fold cross-validation optimized neural computing.","authors":"Robert Someo Makomere, Lawrence Koech, Hilary Limo Rutto, Sammy Kiambi","doi":"10.1080/10934529.2024.2317670","DOIUrl":"10.1080/10934529.2024.2317670","url":null,"abstract":"<p><p>Perceptron models have become integral tools for pattern recognition and classification problems in engineering fields. This study envisioned implementing artificial neural networks to forecast the performance of a mini-spray dryer for desulfurization activities. This work adopted k-fold cross-validation, a rigorous technique that evaluates model performance across multiple data segments. Several ANN models (21) were trained on data obtained from sulfation conditions, including sulfation temperature (120 °C-200 °C), slurry pH (4-12), stoichiometric ratio (0.5-2.5), slurry solid concentration (6%-14%) as the feed input and sulfur capture as the response. Three hundred synthetic datasets generated using the Gaussian noise data augmentation underwent a 10-fold cross-validation process before simulation on neural networks triggered by the logsig and tansig activation functions. The computation accuracy was further evaluated by altering the number of hidden cells from 2 to 10. The ANN architectures were assessed using statistical metrics such as mean square error (MSE), root mean square error (RMSE), mean absolute percentage error (MAPE), and the coefficient of determination (<i>R</i><sup>2</sup>) techniques. Overall, error estimation suggests cross-validation and data augmentation are critical in efficient neural network generalization. The logsig function trained with 10 hidden cells presented closer data articulation when mapped onto actual values.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"1-14"},"PeriodicalIF":2.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139905788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Year-long and seasonal differences of PM2.5 chemical characteristics and their role in the viability of human lung epithelial cells (A549). PM2.5 化学特征的长年和季节性差异及其对人类肺上皮细胞(A549)活力的影响。
IF 1.9 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2024-07-01 DOI: 10.1080/10934529.2024.2370680
Asli Baysal, Hasan Saygin, Ahu Soyocak, Burcu Onat
{"title":"Year-long and seasonal differences of PM<sub>2.5</sub> chemical characteristics and their role in the viability of human lung epithelial cells (A549).","authors":"Asli Baysal, Hasan Saygin, Ahu Soyocak, Burcu Onat","doi":"10.1080/10934529.2024.2370680","DOIUrl":"10.1080/10934529.2024.2370680","url":null,"abstract":"<p><p>Fine particulate matters-PM<sub>2.5</sub> in the air can have considerable negative effects on human health and the environment. Various human cell-based studies examined the effect of PM<sub>2.5</sub> on human health in different cities of the world using various chemical parameters. Unfortunately, limited information is available regarding the relationship between toxicity and chemical characteristics of PM<sub>2.5</sub> collected in Istanbul, Türkiye, located in one of the most populated cities in the world. To investigate the chemical characteristics and cytotoxicity of PM<sub>2.5</sub> in Istanbul, samples were collected for 12 months, then potentially toxic metals, oxidative potential, and particle indicators (e.g., functional groups and elements) were determined, and the cytotoxicity of PM<sub>2.5</sub> on human A549 lung alveolar epithelial cells was examined. The mean PM<sub>2.5</sub> mass concentration was 24.0 ± 17.4 µg m<sup>-3</sup> and higher in cold months compared to other seasons. Moreover, the results of the metals, elemental, and functional groups indicated that seasonal and monthly characteristics were influenced by the regional anthropogenic sources and photochemistry input. The cytotoxicity results also showed that the viability of A549 cells was reduced with the exposure of PM<sub>2.5</sub> (30-53%) and higher cytotoxicity was obtained in summer compared to the other seasons due to the impact of the metals, elements, and oxidative characteristics of PM<sub>2.5</sub>.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"261-272"},"PeriodicalIF":1.9,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141476732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Artificial Neural Network (ANN) as a predictive tool for the removal of pharmaceutical from wastewater streams using biochar: a multifunctional technology for environment sustainability. 应用人工神经网络(ANN)作为预测工具,利用生物炭去除废水中的药物:一种促进环境可持续性的多功能技术。
IF 2.1 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2024-03-25 DOI: 10.1080/10934529.2024.2329033
Mohammed Saleem Mansoor, Asmita Mishra, David Lokhat, B C Meikap
{"title":"Application of Artificial Neural Network (ANN) as a predictive tool for the removal of pharmaceutical from wastewater streams using biochar: a multifunctional technology for environment sustainability.","authors":"Mohammed Saleem Mansoor, Asmita Mishra, David Lokhat, B C Meikap","doi":"10.1080/10934529.2024.2329033","DOIUrl":"10.1080/10934529.2024.2329033","url":null,"abstract":"<p><p>This study investigates biochar as an attractive option for removing pharmaceuticals from wastewater streams utilizing data from various literature sources and also explores the sensitivity of the characteristics and implementation of biochar. ANN 1 was designed to determine the optimal biochar characteristics (Surface Area, Pore Volume) to achieve the maximum percentage removal of pharmaceuticals in wastewater streams. ANN 2 was developed to identify the optimal biomass feedstock composition, pyrolysis conditions (temperature and time), and chemical activation (acid or base) to produce the optimal biochar from ANN 1. ANN 3 was developed to investigate the effectiveness of the biochar produced in ANN 1 and 2 in removing dye from water. Biomass feedstock with a high lignin content and high volatile matter at a high pyrolysis temperature, whether using an acid or base, achieves a high mesopore volume and high surface area. The biochar with the highest surface area and mesopore volume achieved the highest removal percentage. Regardless of hydrophobicity conditions, at low dosages (0.2), a high surface area and pore volume are required for a high percent removal. And with a higher dosage, a lower surface area and pore volume is necessary to achieve a high percent removal.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":"59 1","pages":"40-53"},"PeriodicalIF":2.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140207060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-situ synthesis of sunlight-driven CuO-ZnO heterostructure photocatalyst for enhanced elimination of organic pollutants and CO2 reduction. 原位合成阳光驱动的 CuO-ZnO 异质结构光催化剂,用于增强有机污染物的消除和二氧化碳的还原。
IF 1.9 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2024-10-21 DOI: 10.1080/10934529.2024.2418713
Nada Ahmed Rasheed, Omar Faridh Fawzi, Haidar Abdulkareem Almashhadani, Ahmed Ismail, Sharafat Ali, Muhammad Zahid
{"title":"In-situ synthesis of sunlight-driven CuO-ZnO heterostructure photocatalyst for enhanced elimination of organic pollutants and CO<sub>2</sub> reduction.","authors":"Nada Ahmed Rasheed, Omar Faridh Fawzi, Haidar Abdulkareem Almashhadani, Ahmed Ismail, Sharafat Ali, Muhammad Zahid","doi":"10.1080/10934529.2024.2418713","DOIUrl":"10.1080/10934529.2024.2418713","url":null,"abstract":"<p><p>Removing hazardous organic pollutants, such as 4-nitrophenol (4-NP) and Congo red (CR) dyes from aqueous media and CO<sub>2</sub> from the atmospheric medium remains a significant challenge. Herein, we report a facile in-situ synthetic approach for fabricating CuO-ZnO heterostructure photocatalysts through the surfactant-assisted co-precipitation method. The catalytic results demonstrate that the Cu<sub>1</sub>O-ZnO photocatalyst exhibits excellent activity under direct sunlight irradiation, owing to the heterostructure formation between the CuO and ZnO. The Cu<sub>1</sub>O-ZnO photocatalyst showed higher reaction rate constant (k) values of 0.20 min<sup>-1</sup> for 4-NP and 0.09 min<sup>-1</sup> for CR compared to previous reports. Additionally, efficient CO<sub>2</sub> reduction was also achieved over Cu<sub>1</sub>O-ZnO photocatalyst. The optical and structural characterization results indicate that the improved photocatalytic reduction and degradation observed for the Cu<sub>1</sub>O-ZnO photocatalyst can be attributed to the strong synergistic interaction between p-type CuO and n-type ZnO and the construction of the p-n heterojunction. As a result, the absorption of visible light distinctly increased and inhibited the recombination rate of the photo-created electron-hole (e<sup>-</sup>/h<sup>+</sup>). Furthermore, the Cu<sub>1</sub>O-ZnO photocatalyst exhibited remarkable durability and recyclability, retaining high photoactivity (≥ 93%) after five cycles, demonstrating its potential for real-world applications in the photocatalytic reduction and degradation reactions under direct sunlight irradiation.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"440-452"},"PeriodicalIF":1.9,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142467204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Uranium adsorption efficiency of diglycolamic acid functionalized graphitic carbon nitride adsorbent: Kinetic, isotherm, and thermodynamic studies. 二甘醇酸功能化氮化石墨碳吸附剂的铀吸附效率:动力学、等温线和热力学研究。
IF 1.9 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2024-07-23 DOI: 10.1080/10934529.2024.2380956
A Dhanasekaran, Ilaiyaraja Perumal
{"title":"Uranium adsorption efficiency of diglycolamic acid functionalized graphitic carbon nitride adsorbent: Kinetic, isotherm, and thermodynamic studies.","authors":"A Dhanasekaran, Ilaiyaraja Perumal","doi":"10.1080/10934529.2024.2380956","DOIUrl":"10.1080/10934529.2024.2380956","url":null,"abstract":"<p><p>This study proposes the use of diglycolamic acid-functionalized graphitic carbon nitride (HDGA-gCN) as an adsorbent for uranium removal. Our experiments showed that at pH 6.0, HDGA-gCN had a high adsorption capacity of 263.2 mg g<sup>-1</sup> and achieved equilibrium in 30 min. The adsorption isotherm was well-fitted by the Langmuir model, and the adsorption kinetics followed a pseudo-second-order equation. U(VI) adsorption on HDGA-gCN is due to electrostatic interactions between the amine, diglycolamic acid, and uranium species. The thermodynamic parameters indicate that adsorption is spontaneous and exothermic. The loaded U(VI) can be desorbed using 0.1 M Na<sub>2</sub>CO<sub>3</sub>, and HDGA-gCN exhibited an exceptional adsorption percentage for U(VI) compared to other coexisting ions. HDGA-gCN had faster kinetics, adsorption capacity, and reusability, making it suitable for U(VI) remediation.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"280-294"},"PeriodicalIF":1.9,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141751847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Green synthesis of gold nanoparticles via Moringa oleifera seed extract: antioxidant, antibacterial and anticarcinogenic activity on lung cancer. 通过油辣木籽提取物绿色合成金纳米粒子:对肺癌的抗氧化、抗菌和抗癌活性。
IF 1.9 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2024-06-16 DOI: 10.1080/10934529.2024.2366736
D C Bouttier-Figueroa, M A Loreto-Romero, Manuel A Roldan, F H González-Gutiérrez, M Cortez-Valadez, M Flores-Acosta, R E Robles-Zepeda
{"title":"Green synthesis of gold nanoparticles via <i>Moringa oleifera</i> seed extract: antioxidant, antibacterial and anticarcinogenic activity on lung cancer.","authors":"D C Bouttier-Figueroa, M A Loreto-Romero, Manuel A Roldan, F H González-Gutiérrez, M Cortez-Valadez, M Flores-Acosta, R E Robles-Zepeda","doi":"10.1080/10934529.2024.2366736","DOIUrl":"10.1080/10934529.2024.2366736","url":null,"abstract":"<p><p>Plant-mediated biosynthesis of nanoparticles is a green method that allows synthesis in one-pot process. Synthesis of gold nanoparticles with plant extracts has gained interest in the field of biomedicine due to its variety of applications. This study presents the synthesis <i>via</i> green chemistry of gold nanoparticles (AuNPs) using the methanol extract of <i>Moringa oleifera</i> seeds. The AuNPs were synthesized at room temperature. UV-Vis spectroscopy confirmed the formation of AuNPs by identifying the surface plasmon resonance located at 546 nm. TEM analysis shows spherical nanoparticles. FTIR analysis demonstrated the presence of specific bioactive molecules responsible for the Au<sup>3+</sup> ion reduction process. The antioxidant activity of the nanoparticles was evaluated on the stabilization of the DPPH radical (1,1-diphenyl-2-picrylhydrazyl, 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl). The antimicrobial activity analysis was developed by broth microdilution method at different concentrations against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. Minimum inhibitory concentration were 400 µg/mL and 200 µg/mL, respectively. A549 lung cancer cell proliferation was measured according to the MTT protocol, indicating a dose-dependent response and a IC<sub>50</sub> of 163.9 ± 13.27 µg/mL. The AuNPs synthesized using <i>M. oleifera</i> seeds showed promise as active materials for antimicrobial or anticancer products.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"231-240"},"PeriodicalIF":1.9,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141331057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In vitro assessment of acute airway effects from real-life mixtures of ozone-initiated oxidation products of limonene and printer exhaust. 体外评估现实生活中臭氧引发的柠檬烯氧化产物和打印机废气混合物对气道的急性影响。
IF 1.9 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2024-09-26 DOI: 10.1080/10934529.2024.2406113
Sandra Verstraelen, Frederick Maes, An Jacobs, Sylvie Remy, Evelien Frijns, Eddy Goelen, Inge Nelissen
{"title":"<i>In vitro</i> assessment of acute airway effects from real-life mixtures of ozone-initiated oxidation products of limonene and printer exhaust.","authors":"Sandra Verstraelen, Frederick Maes, An Jacobs, Sylvie Remy, Evelien Frijns, Eddy Goelen, Inge Nelissen","doi":"10.1080/10934529.2024.2406113","DOIUrl":"10.1080/10934529.2024.2406113","url":null,"abstract":"<p><p>In indoor air the reaction of ozone (O<sub>3</sub>) with terpenes may lead to the formation of irritating gas-phase products which may induce acute airway effects (i.e. sudden, short-term changes or symptoms related to the respiratory system). We aimed to perform an <i>in vitro</i> study on possible health effects of products from the O<sub>3</sub>-initiated reaction of limonene with printer exhaust, representing real-life mixtures in offices. Human bronchial epithelial cells were exposed for 1 hour (h) to limonene and O<sub>3</sub>, combined with printer exhaust. The resulting concentrations represented 34% and 6% of the generated initial concentrations of limonene (400 µg/m³) and O<sub>3</sub> (417 µg/cm³), respectively, which were in range of high end realistic indoor concentrations. We observed that the reaction of limonene with O<sub>3</sub> generated an increase of ultrafine particles within 1 h, with a significant increase of secondary reaction products 4-oxopentanal and 3-isopropenyl-6-oxo-heptanal at high end indoor air levels. Simultaneous printing activity caused the additional release of micron-sized particles and a further increase in reaction products. Relevant cellular endpoints to evaluate the possible induction of acute airway effects were measured. However, none of the test atmospheres representing office air was observed to induce these effects.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"403-419"},"PeriodicalIF":1.9,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Municipal anaerobic filter effluent treatment using advanced oxidation processes for potential use in unrestricted crop production. 城市厌氧过滤器污水处理采用先进的氧化工艺,用于无限制作物生产的潜在用途。
IF 1.9 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2025-01-10 DOI: 10.1080/10934529.2025.2450918
Barnabas Oluoch, William Musazura, Benton Otieno, Stephen Ojwach, Alfred Odindo
{"title":"Municipal anaerobic filter effluent treatment using advanced oxidation processes for potential use in unrestricted crop production.","authors":"Barnabas Oluoch, William Musazura, Benton Otieno, Stephen Ojwach, Alfred Odindo","doi":"10.1080/10934529.2025.2450918","DOIUrl":"10.1080/10934529.2025.2450918","url":null,"abstract":"<p><p>To meet wastewater treatment quality standards for reuse, integrating advanced oxidation processes (AOPs) with Decentralized Wastewater Treatment Systems (DEWATS) is promising. This study aimed to optimize AOPs (ozonolysis, UV photolysis, TiO<sub>2</sub> photocatalysis) for polishing anaerobic filter (AF) effluent from DEWATS, as an alternative to constructed wetlands. Metrics included pathogen reduction efficiency, post-disinfection regrowth, and effects on physical parameters (pH, EC, turbidity), organic matter (soluble COD, BOD, DOC, humic), and nutrient concentration (ammonium, nitrates, ortho-P). Ozonolysis and TiO<sub>2</sub> photocatalysis achieved a 6.4-log pathogen reduction, while UV photolysis achieved a 6-log. No pathogen regrowth occurred with ozonolysis, but TiO<sub>2</sub> photocatalysis showed <i>E. coli</i> and Total coliforms regrowth of 2.5-log and 2.7-log, respectively. UV photolysis showed 0.5-log and 2.2-log regrowth for <i>E. coli</i> and Total coliforms, respectively. TiO<sub>2</sub> photocatalysis significantly reduced BOD, soluble COD, humic substances, ortho-P, turbidity, and nitrates, while increasing pH, EC, ammonium, and DOC. Ozonolysis significantly lowered BOD, soluble COD, humics, and turbidity, but increased ortho-P, nitrates, pH, EC, ammonium, and DOC. UV-photolysis showed marginal reductions in BOD, nitrates, and turbidity, with increased EC, pH, ammonium, DOC, ortho-P, and humic levels. Ozonolysis emerged as the best AOP, demonstrating efficient effluent treatment with no pathogen regrowth.</p>","PeriodicalId":15671,"journal":{"name":"Journal of Environmental Science and Health Part A-toxic\\/hazardous Substances & Environmental Engineering","volume":" ","pages":"563-573"},"PeriodicalIF":1.9,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142965214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TXSELECT: a web-based decision support system for regional assessment of potential E. coli loads using a spatially explicit approach. TXSELECT:一个基于网络的决策支持系统,用于使用空间显式方法对潜在的大肠杆菌负荷进行区域评估。
IF 1.9 4区 环境科学与生态学
Journal of Environmental Science and Health Part A-toxic\/hazardous Substances & Environmental Engineering Pub Date : 2024-01-01 Epub Date: 2025-01-03 DOI: 10.1080/10934529.2024.2445953
Shubham Jain, Raghavan Srinivasan, Thomas J Helton, Raghupathy Karthikeyan
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