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Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering

https://read.qxmd.com/read/38433385/decolouration-of-azo-dyes-by-radicals-generated-from-k-2-s-2-o-8-automatically-in-homogeneous-aqueous-solutions
#1
JOURNAL ARTICLE
Yu Zhiyong, Gong Yaping, Wang Zhiyin, Li Huanrong
In this work, at 15 °C and 25 °C, authors study the decolouration reactions (or degradation reactions or oxidation reactions) of 0.10 mM azo dyes (methyl orange and congo red) by (1) K2 S2 O8 and (2) Co2+ /K2 S2 O8 , expounding the roles of K2 S2 O8 and Co2+ : K2 S2 O8 can oxidize azo dyes automatically in water by radicals; Co2+ has catalysis for oxidation of K2 S2 O8 , whether Co2+ is from CoSO4 or Co(NO3 )2 , CoCl2 , CoAc2 . The decolouration degree of azo dyes in all systems quickens with the increase of the initial concentration of K2 S2 O8 and the reaction temperature...
March 3, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38407182/application-of-machine-learning-approach-artificial-neural-network-and-shrinking-core-model-in-cobalt-ii-and-copper-ii-leaching-process
#2
JOURNAL ARTICLE
Machodi Mathaba, JeanClaude Banza
The leaching laboratory experiment uses the artificial neural network (ANN) to predict and evaluate copper and cobalt recovery. This study aimed to evaluate the efficacy of using the shrinking core model in conjunction with an artificial neural network (ANN) as part of a machine learning strategy to improve the leaching process of cobalt (II) and copper (II). The numerous factors in the leaching process, such as acid concentration, leaching time, temperature, soil-to-solution ratio, and stirring speed, are adjusted using an ANN with several layers, feed-forward, and back-propagation learning methods...
February 26, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38400531/machine-learning-a-powerful-tool-for-the-prediction-of-bivo-4-nanoparticles-efficiency-in-photocatalytic-degradation-of-organic-dyes
#3
JOURNAL ARTICLE
Gnanaprakasam A, Thirumarimurugan M, Shanmathi N
Wastewater pollution caused by organic dyes is a growing concern due to its negative impact on human health and aquatic life. To tackle this issue, the use of advanced wastewater treatment with nano photocatalysts has emerged as a promising solution. However, experimental procedures for identifying the optimal conditions for dye degradation could be time-consuming and expensive. To overcome this, machine learning methods have been employed to predict the degradation of organic dyes in a more efficient manner by recognizing patterns in the process and addressing its feasibility...
February 23, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38396360/regional-air-quality-study-by-assessing-trace-metal-atmospheric-deposition
#4
JOURNAL ARTICLE
Pranvera Lazo, Zdravko Špirić, Trajče Stafilov, Flora Qarri, Lirim Bekteshi, Lambe Barandovski, Robert Šajn, Katerina Bačeva Andonovska, Ivana Vučković
This study addresses the atmospheric deposition of trace elements investigated in Albania, Croatia and Macedonia in 2010 as part of the European Moss Study. This study provides data on the concentration of ten metals (Cd, Cr, Cu, Ni, Pb, V, Zn, Fe, Al, and Li) in naturally growing mosses. In general, all concentration data follow a lognormal distribution. Cd, Cr, Ni, and Zn show strong fluctuations in the moss samples from Albania and Macedonia, and Pb, Fe, and Al in the mosses from Croatia. The concentrations of Cd, Cu, and Zn were higher in the samples from Croatia than in those from Albania and Macedonia; the concentrations of Cr, Ni, V, Fe, Al, and Li were higher in the samples from Albania than in those from Croatia and Macedonia; and a higher concentration of Pb was found in the samples from Macedonia...
February 23, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38374611/precision-forecasting-of-spray-dry-desulfurization-using-gaussian-noise-data-augmentation-and-k-fold-cross-validation-optimized-neural-computing
#5
JOURNAL ARTICLE
Robert Someo Makomere, Lawrence Koech, Hilary Limo Rutto, Sammy Kiambi
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...
February 19, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38351615/anticandidal-effectiveness-of-greenly-synthesized-zinc-oxide-nanoparticles-against-candidal-pathogens
#6
JOURNAL ARTICLE
Khalid Maniah
Drug resistance of pathogenic candidal strains to conventional antifungal agents represents a significant health issue contributing to high morbidity worldwide. Hence, the aim of the current study focused on evaluating the antifungal and synergistic activities of the green synthesized zinc oxide nanoparticles formulated using Laurus nobilis leaf extract. The biogenic ZnONPs were hexagonal in shape with average particle size diameter of 37.98 nm and pure crystalline structure as detected by XRD data. The highest antifungal activity of biogenic ZnONPs was detected against Candida parapsilosis strain demonstrating relative inhibitory zone diameters of 17...
February 13, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38293764/a-comprehensive-review-on-artificial-intelligence-in-water-treatment-for-optimization-clean-water-now-and-the-future
#7
JOURNAL ARTICLE
Machodi Mathaba, JeanClaude Banza
Given the severe effects that toxic compounds present in wastewater streams have on humans, it is imperative that water and wastewater streams pollution be addressed globally. This review comprehensively examines various water and wastewater treatment methods and water quality management methods based on artificial intelligence (AI). Machine learning (ML) and AI have become a powerful tool for addressing problems in the real world and has gained a lot of interest since it can be used for a wide range of activities...
January 31, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38287653/recycled-pulp-and-paper-sludge-potential-source-of-cellulose-feasibility-assessment-and-characterization
#8
JOURNAL ARTICLE
E K Suter, H L Rutto, T S Seodigeng, S L Kiambi, W N Omwoyo
The pulp and paper industry stands out as an example of a technology based on a renewable resource, cellulose. The sludge, however, poses major environmental and public health problems. To effectively manage the sludge wastes, it is critical to fully evaluate its composition, possible environmental impacts, and the total amount of exploitable renewable resources. The study established the pH of the sludge to be 7.32 ± 0.98, an electrical conductivity (1.84 mS/cm), nitrogen concentration (2...
January 29, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38270333/health-risk-assessment-of-heavy-metals-in-pm-2-5-and-pm-10-in-sarajevo-air-bosnia-and-herzegovina
#9
JOURNAL ARTICLE
Nejira Trako, Ferida Mašić, Faruk Ajanović, Samra Merdan, Jasna Huremović, Sabina Žero, Adnan Mašić, Sabina Gojak-Salimović
The concentrations of eight heavy metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) associated with PM2.5 and PM10 in Sarajevo air, Bosnia and Herzegovina (BiH) have been studied. A total of 136 PM2.5 and PM10 samples were simultaneously collected from 21 February to 11 November 2020. Metal contents were determined by atomic absorption spectrometry, flame (FAAS) and electrothermal (ETAAS) techniques. The mean concentrations of metals in PM10 are 2.93 ng/m3 (Cd), 7.21 ng/m3 (Cr), 12.02 ng/m3 (Cu), 126 ng/m3 (Fe), 20...
January 25, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38189371/improving-the-practicality-of-recombinant-escherichia-coli-biosensor-in-detecting-trace-cr-vi-by-modifying-the-cryogenic-storage-conditions-of-biosensors-and-applying-simple-pretreatment
#10
JOURNAL ARTICLE
Guey-Horng Wang, Chi-Hsiang Tang, Chiu-Yu Cheng, Ying-Chien Chung
Hexavalent chromium (Cr(VI)) is a global environmental pollutant. To reduce the risk caused by Cr(VI), a simple, accurate, reproducible, and inexpensive method for quantifying Cr(VI) in water and soil should be developed. In this study, three types of recombinant Escherichia coli biosensors (namely T7- lux - E. coli , T3- lux - E. coli , and SP6- lux - E. coli biosensor) containing promoters (T7, T3, and SP6), chromate-sensing regulator chrB , and the reporter gene luxAB were constructed. This study investigated the effects of cryogenic freezing temperature and time on trace Cr(VI) measurement by using recombinant E...
January 8, 2024: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38146218/review-on-moringa-oleifera-a-green-adsorbent-for-contaminants-removal-characterization-prediction-modelling-and-optimization-using-response-surface-methodology-rsm-and-artificial-neural-network-ann
#11
JOURNAL ARTICLE
Kanono Comet Manesa, Zolani Dyosi
Moringa oleifera utilization in water treatment to eliminate emerging pollutants such as heavy metal ions, pesticides, pharmaceuticals, and pigments has been extensively evaluated. The efficacy of Moringa oleifera biosorbent has been investigated in diverse research work using various techniques, including its adsorption capacity kinetic, thermodynamic evaluation, adsorbent modifications, and mechanism behind the adsorption process. The Langmuir isotherm provided the most remarkable experimental data fit for batch adsorption investigations, whereas the best fit was obtained with the pseudo-second order kinetic model...
December 25, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38069560/to-explore-the-remediation-mechanism-and-effect-of-biochar-and-kh-2-po-4-on-soils-contaminated-with-heavy-metal-ions-hg-2-cd-2-and-pb-2
#12
JOURNAL ARTICLE
Dun Wu, Jianwei Lu, Jian Wu, Bo Li
In this study, wheat straw-derived biochar was prepared by setting a temperature of 400 °C under an oxygen-limited environment using the technique of "programmed temperature increase control". The results showed that the biochar had a strong adsorption capacity for Hg2+ , Cd2+ and Pb2+ ions, and the adsorption pattern was Hg2+ >Cd2+ >Pb2+ . There was a competitive adsorption effect during the coexistence of the ions. The results of the soil remediation tests showed that the effects of biochar on soil physicochemical properties and heavy metal distribution was generally greater than those of KH2 PO4 in single or combined contaminated soil...
December 9, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/38013212/effect-of-one-or-more-microorganisms-on-the-yield-components-of-upland-rice-under-greenhouse-conditions
#13
JOURNAL ARTICLE
Adriano S Nascente, Ishola Z Temitope, Marta Cristina C Filippi, Dennis Ricardo C Cruz
The use of beneficial microorganisms is an important strategy to improve rice production in a sustainable way. The study was carried out to determine the effect of single and combined beneficial microorganism on the development of upland rice. The experiment was performed in greenhouse and arranged in a completely randomized design with 29 treatments and 4 replications. Treatments consisted of rice seeds cultivar BRS A501 CL treated with single and combined multifunctional microorganisms (1 ( Serratia marcescens), 2 ( Bacillus toyonensis ), 3 ( Phanerochaete australis) , 4 ( Trichoderma koningiopsis) , 5 ( Azospirillum brasilense), 6 ( Azospirillum sp...
November 27, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/37929700/the-ability-of-drinking-water-treatment-sludge-to-degrade-methylene-blue-in-water-through-combined-adsorption-photo-fenton-like-process
#14
JOURNAL ARTICLE
Zaina Izghri, Karima Ennaciri, Ghizlane Enaime, Chaima Sekkouri, Fatima Ezzahra Yaacoubi, Lhoussaine Chahid, Layla El Gaini, Abdelaziz Bacaoui, Abdelrani Yaacoubi
In the present study, drinking water treatment sludge (DWTS) was reused as a catalyst in advanced oxidation processes for the removal of methylene blue (MB) from aqueous solutions. After determining their chemical and mineralogical compositions by X-ray Powder Diffraction (XRD), BET surface area, scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS), Inductively Coupled Plasma (ICP), and FT-IR spectra. DWTS has been used as a heterogeneous photo Fenton-Like catalyst for the oxidation of MB under different parameters, including pH (3-6), H2 O2 concentration (9...
November 6, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/37916440/kinetics-of-ester-105-degradation-by-la-tio-2-photocatalysis
#15
JOURNAL ARTICLE
Sipin Zhu, Chunfei Chen, Zhaopeng Wang, Chunying Wang, Xianping Luo
Lanthanum-doped titanium (La/TiO2 ) nano-photocatalysts were prepared using the sol-gel method and characterized by X-ray diffraction (XRD), zeta potential, and low-temperature nitrogen adsorption analyses. Ester-105, a flotation collector from beneficiation wastewater, was chosen as the target pollutant. The influence of the initial ester-105 concentration, pH, and photocatalyst dosage on the photocatalytic degradation of ester-105 was investigated. To examine the kinetics of the adsorption and photocatalytic degradation of ester-105, a Langmuir adsorption model and Langmuir-Hinshelwood kinetic models were established and discussed...
November 2, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/37897219/influence-of-phthalate-and-non-phthalate-plasticizers-on-reproductive-endocrine-system-related-gene-expression-profiles-in-japanese-medaka-oryzias-latipes
#16
JOURNAL ARTICLE
Yoshifumi Horie, Dorcas Uaciquete
Plasticizers containing phthalates have the potential to alter endocrine function in vertebrates. While non-phthalate plasticizers were previously considered to be environmentally friendly and safe, our research team discovered that bis-(2-ethylhexyl) adipate (DEHA) and acetyl tributyl citrate (ATBC) disrupt thyroid hormones in Japanese medaka ( Oryzias latipes ). We assessed reproductive- and estrogen-responsive gene expression patterns in Japanese medaka to determine whether the phthalate plasticizers bis-(2-ethylhexyl) phthalate (DEHP, positive control) and the non-phthalate plasticizers DEHA and ATBC disrupt endocrine signaling...
October 28, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/37888954/electrochemical-treatment-of-textile-wastewater-using-copper-electrodes
#17
JOURNAL ARTICLE
M S Asath Murphy, D Jovitha Jane, S Sahaya Leenus, Riju S Robin, Jegathambal Palanichamy, Parameswari Kalivel
The conventional electrode aluminum used in electrocoagulation (EC) for the textile wastewater undergoes pitting type of corrosion, so dissolution of the same is very high during electrolysis. This research focuses on the treatment of real-time textile effluent with copper electrodes that corrode uniformly during electrolysis, with optimizing operating parameters for high color removal efficiency (CRE%). The sludge acquired was analyzed by XPS and XRD to study the mechanism of dye removal. The treated effluent was subjected to phytotoxicity analysis using Vigna radiata to study the toxicity effect of the intermediary products...
October 27, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/37888940/analysis-of-drug-of-abuse-compounds-using-passive-sampling-and-ultrahigh-liquid-chromatography-coupled-to-mass-spectrometry
#18
JOURNAL ARTICLE
Carolina A Jiménez-Rojas, Carlos Emilio Gutiérrez Ulloa, Sandra M Chingaté-López, Jaime A Lara-Borrero
The present study proposes the monitoring of compounds of drugs of abuse through the use of passive samplers in water systems. Initially, four positive ion compounds of interest were determined according to national surveys, and then composite sampling and passive sampling were implemented using continuous-flow passive samplers containing two types of sorbents, the Empore disk and Gerstel Twister. Two study sites were established at the beginning and at the end of the middle Bogotá River basin. After 4 days, the sorbents were removed so that they could be desorbed and analyzed using UHPLC-MS in the laboratory...
October 27, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/37800681/utilization-of-znfe-2-o-4-polyaniline-pani-znfe-2-o-4-polystyrene-pst-and-znfe-2-o-4-polypyrrole-ppy-nanocomposites-for-removal-of-red-x-grl-and-direct-sky-blue-dyes-from-wastewater-equilibrium-kinetic-and-thermodynamic-studies
#19
JOURNAL ARTICLE
Amina Ashraf, Ruba Munir, Gadah Albasher, Madiha Ghamkhar, Amna Muneer, Muhammad Yaseen, Tamsal Murtza, Saima Noreen
In this study, ZnFe2 O4 -Polyaniline (PANI), ZnFe2 O4 -Polystyrene (PST), and ZnFe2 O4 -Polypyrrole (Ppy) nanocomposites were synthesized by the adsorption method and characterized by field emission scanning electron microscopy and Fourier transform infrared spectrometer. Batch adsorption experiments were conducted for removing two types of hazardous dyes Red X-GRL and Direct Sky Blue 51 from an aqueous solution and the effect of pH, adsorbent dosage, contact time, and initial concentration of dyes were investigated...
October 6, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://read.qxmd.com/read/37791682/the-importance-of-the-pretreatment-of-samples-in-nd-quantification-from-ndfeb-magnets-through-inductively-coupled-plasma-atomic-emission-spectroscopy-icp-oes-a-rapid-and-streamlined-methodology
#20
JOURNAL ARTICLE
Karem Gallardo, Dayana Valdivia, Andrea Jara, Rodrigo Castillo
In this study, we emphasize the critical role of sample pretreatment. We report on the behavior of NdFeB magnet samples exposed to four different acid media for digestion. NdFeB magnets are becoming a significant source of neodymium, a rare-earth element critical to many technologies and a potential substitute for traditional mining of the element. To address this, we meticulously tested nitric acid, hydrochloric acid, acetic acid, and citric acid, all at a concentration of 1.6 M, as economical and environmentally friendly alternatives to the concentrated mineral acids commonly used in the leaching of these materials...
October 4, 2023: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
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