Environmental Technology最新文献

{"title":"Controlled synthesis of BiFeO₃, Bi₂Fe₄O₉ and BiFeO₃/Bi₂Fe₄O₉ nanostructures with enhanced photocatalytic activity on degradation of Eosin Yellow under visible light.","authors":"A Matharasi, A Surya Prabha, V Vinisha, G Hannah Priya, A Alinda Shaly, J Arul Martin Mani, J Mary Linet","doi":"10.1080/09593330.2025.2524212","DOIUrl":"10.1080/09593330.2025.2524212","url":null,"abstract":"<p><p>Multiferroic BiFeO₃, Bi₂Fe₄O₉ and BiFeO₃/Bi₂Fe₄O₉ nanostructures were synthesised by a low-temperature hydrothermal method by varying the reaction temperature and time without any further post-heat treatment procedure. The as-prepared nanostructures were examined utilising X-ray diffraction (XRD), UV-Visible spectroscopy (UV-Vis), Fourier transform-infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscopy (SEM) and vibration sample magnetometry (VSM) techniques to assess their physicochemical and magnetic properties. XRD analysis revealed the formation of BiFeO₃, Bi₂Fe₄O₉ and BiFeO₃/Bi₂Fe₄O₉ with an average crystallite size in the range of 44-52 nm, and the lattice strains due to crystal imperfections were also investigated by W-H analysis. From UV-Visible analysis, the as-prepared samples have bandgaps in the range of 2.02-2.17 eV for direct and 1.82-1.94 eV for indirect bandgaps. The photocatalytic activity was analyzed by photocatalytic degradation of Eosin Yellow solution at ambient temperature. In comparison to pure BiFeO₃ and Bi₂Fe₄O₉, the modified BiFeO₃/Bi₂Fe₄O₉ composite displayed higher photocatalytic activity when exposed to visible light. About 77.14% of the EY dye was degraded after 180 minutes of light exposure. The observed rate constant for BF-200 was 0.00889/min, which was about 1.95 and 1.82 times higher than that of pure BiFeO₃ and pure Bi₂Fe₄O₉ samples, respectively. Because of the compounds' synergistic effect, there was an increase in light absorption and an improvement in charge separation that contributed to the increased photocatalytic activity, which could be a suitable candidate for the photocatalytic decomposition of organic contaminants.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"5027-5040"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144590791","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}

{"title":"Characteristics of intracellular/extracellular antibiotic resistance genes and microbial community in sludge compost under sulfadiazine stress.","authors":"Yingchun Li, Xiangyu Liu, Jie Yang, Renhe Li, Mengmeng Wang, Shaoping Kuang","doi":"10.1080/09593330.2025.2522480","DOIUrl":"10.1080/09593330.2025.2522480","url":null,"abstract":"<p><p>The accumulation of emerging antibiotics in sewage sludge, which serves as a repository for antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs), is raising growing concern. To accurately assess the environmental risks, it is essential to separately investigate intracellular and extracellular ARGs (iARGs and eARGs) due to their distinct roles in resistance persistence and horizontal gene transfer. However, the impact of sulfadiazine (SDZ) on iARGs and eARGs, and the mechanisms involved in the composting process remain under further investigation. In this study, composts with SDZ concentrations of 5 and 50 mg/kg were constructed, and ARGs, microbial community composition and functional pathways were analyzed. The results showed that the abundance of iARGs varied significantly under SDZ selective pressure, while eARGs showed no significant differences. Specifically, i-<i>erm</i> decreased in the 50SDZ group, likely due to competition for ecological niches. The abundance of <i>erm</i>A, <i>erm</i>B and <i>erm</i>F decreased by approximately 97%, 85%, and 84%, respectively. i-<i>sul</i> increased by 127% to 156% in SDZ-added groups but not dose-dependently. <i>Bacillus</i>, <i>Paracoccus</i>, <i>Pseudomonas</i>, and <i>Caproiciproducens</i> were predominant in the SDZ-added groups. The abundance of potential ARG hosts, such as <i>Bacillus</i> and <i>Paracoccus</i>, increased significantly, with <i>Paracoccus</i> showing 2.3-fold and 1.8-fold higher abundance in the 50SDZ and 5SDZ treatments, respectively, compared to the CK. Functional genes related to the ABC-2 type transport system, signal transduction, and genome maintenance decreased with SDZ application. These findings suggested that the dynamics of ARGs should be continuously monitored during sludge composting and land application of compost products to reduce their environmental risks.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4952-4962"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144483717","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}

{"title":"Mechanisms of microorganisms and environmentally persistent free radicals in biochar/PMS degradation of antibiotics after the aging process of fermentation.","authors":"Yanzhuo Zhang, Xiaoya Wang","doi":"10.1080/09593330.2025.2520585","DOIUrl":"10.1080/09593330.2025.2520585","url":null,"abstract":"<p><p>The aging of pyrocarbon under the activity of microorganisms is a long and slow process. Microbial aging will affect the physicochemical properties of pyrocarbon and the removal of organic pollutants. Aging pyrocarbon through anaerobic fermentation more closely simulated the natural microbial processes. Anaerobic fermentation can be used to evaluate the degradation of organic pollutants by pyrocarbon/peroxymonosulfate. Pyrocarbon (HPBC), pyrocarbon + microplastics (HPBC + MPs), and MPs were added in fermentation system. The relative bacterial abundance confirmed that the addition of pyrocarbon and MPs provided carriers for bacterial growth, but it inhibited bacterial growth through biotoxicity. Environmentally persistent free radicals (EPFRs) were used to activate PMS to degrade antibiotics after aging. The concentration of EPFRs in the process of degradation of antibiotics by biochar/PMS first increased and then decreased, while the concentration of EPFRs in the natural environment continued to decrease. During the 30-day fermentation process, the degradation efficiency of antibiotics by biochar/PMS first decreased and then increased. After fermentation, the degradation efficiency on day 30 was 6.68%, 8.76%, and 7.24% higher than that on day 10. The aging process of anaerobic fermentation enhanced the biochar/PMS degradation of antibiotics, which suggested that pyrocarbon could be effectively used over the long term.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4819-4830"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144483720","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}

{"title":"Facile conversion and eco-friendly carbon-bentonite nano sheets synthesis from waste PET bottles and application in Cr⁶⁺ removal from aqueous solution.","authors":"Sepideh Sahragard, Ali Naghizadeh, Sobhan Mortavazi","doi":"10.1080/09593330.2025.2522477","DOIUrl":"10.1080/09593330.2025.2522477","url":null,"abstract":"<p><p>Plastics are extensively utilised in all aspects of life owing to their durability and low price. Global production of polyethylene and polypropylene (the most common microplastics in soil and water) is increasing at an annual rate of approximately 7%. However, owing to the weak plastic natural degradation, low recycling rate, and potential ecological and health risks, the environmental issues brought on by plastic accumulation in marine and land environments have garnered international attention. To protect the environment, waste minimisation, reuse, and recycling processes should be developed. However, heavy metals such as chromium have caused many problems in aquatic environments. This study mainly aimed to synthesise carbon-bentonite nanocomposite and its use for chromium removal. The aforementioned nanocomposites were characterised by FESEM, XRD, EDX, FT-IR, and DLS techniques. To explore the mutual effects of various parameters in chromium adsorption, Central Compound Design (CCD) and Response Surface Methodology (RSM) were used. The maximum efficiency of chromium removal at pH of 5, 90 (minutes), initial chromium concentration of 20 (mg/L), and adsorbent dosage of 10 (mg/L), which was equal to 46.17% and adsorption capacity = 16.5 mg/L. Based on findings, chromium adsorption followed pseudo-second-order (PSO) kinetics and Freundlich and Langmuir isotherms. Thermodynamic and temperature studies also demonstrated that the process efficiency increased with increasing temperature. Owing to its availability and low cost, the combination of nano-bentonite and carbon obtained from PET recycling is recommended as a good adsorbent for removing chromium and other pollutants.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4915-4931"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527024","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}

{"title":"Carbamazepine degradation via solar Galvano-Fenton treatment using Mg/Cu anode/cathode system.","authors":"Javier Rodea-Gil, Luis Antonio Castillo-Suárez, Verónica Martínez-Miranda, Ivonne Linares-Hernández, Ana Elisa Alcántara-Valladolid, Mario Esparza-Soto","doi":"10.1080/09593330.2025.2524081","DOIUrl":"10.1080/09593330.2025.2524081","url":null,"abstract":"<p><p>Carbamazepine (CBZ) is an anticonvulsant pharmaceutical that enters water systems from various sources, including human excretion, and is highly resistant to photodegradation and biodegradation in conventional sewage treatment plants. The objective and main contribution of this study is to identify the operating conditions of a solar Galvano-Fenton (SGF) process for the degradation of commercial CBZ. An Mg/Cu anode/cathode system was used. The anode was placed in parallel, and the cathode was arranged in a spiral shape inside the borosilicate tube at a distance of 0.5 mm. SGF promotes the spontaneous corrosion of Mg and, hence, does not require an external electric current, which is the main advantage of this process. A cylindrical parabolic concentrator (CPC) with a 60° inclination was designed to concentrate UV sunlight. The best operating conditions were obtained through a factorial 3⁴ design: hydraulic retention time (90 min), cathode/anode area ratio (1:1), initial CBZ concentration (25 mg/L), and hydrogen peroxide concentration (500 mg/L). The best removal efficiencies achieved were 52.96% CBZ by ultraviolet-visible (UV-Vis) spectroscopy and 68.66% chemical oxygen demand (COD) with 766 kJ/L of accumulated energy. The Mg/Cu system has a bifunctional effect on the CBZ removal mechanism: first, as a catalyst to promote oxidation reactions, and second, through the complexation of Mg-(CBZ)₂. Therefore, the use of Mg instead of Fe as the anode could be a sustainable option for advanced oxidation processes.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4986-5010"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144559595","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}

{"title":"Biodegradation of print-ink effluent by indigenous microbial isolates.","authors":"Seun Owolabi Adebajo, Paul Olusegun Bankole, Abidemi Esther Ojo, Thaddeus Obaji Ariom, Benjamin Thoha Thomas, Aderonke Kofoworola Akintokun","doi":"10.1080/09593330.2025.2522476","DOIUrl":"10.1080/09593330.2025.2522476","url":null,"abstract":"<p><p>The discharge of untreated print-ink effluent in and around the residential and industrial areas constitutes major environmental and health hazards. Hence, a need for an adequate, effective, economical and environment-friendly treatment method. This study thus evaluates the biodegradation potential of indigenous microbial cells from an ink-effluent environment. Ink effluent and ink pigment samples were collected from the printing-ink industries. Microbial cells were isolated and identified using standard microbial analysis. Isolates were selected for their capability to degrade ink pigment and print ink effluent using agar well-incorporated ink pigments. Molecular analysis was carried out on potential print ink degraders and strains were deployed for degradation analysis, using the microbial cells along with their solid-state fermentation (SSF). Degradation analysis was monitored using a gas chromatography-mass spectrophotometer (GCMS). The results showed that <i>Klebsiella</i> and <i>Aspergillus</i> species were predominant among the nine genera of bacteria and two genera of fungi. <i>Pseudomonas aeruginosa</i> and <i>Penicillium citrinum</i> proved to be the tolerant and potential cells for degradation studies. GCMS analysis confirmed the degradation abilities of the potential strains by showing the disappearances of compounds and the formation of new metabolites after the microbial and SSF treatments. Conclusively, the degradation abilities of <i>P. aeruginosa</i> and <i>P. citrinum</i> demonstrated a remarkable potential to efficiently detoxify ink effluent for environmental safety.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4905-4914"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144607810","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}

{"title":"Response of <i>Brassica chinensis L</i> to the stress of combined pollution of microplastics and cypermethrin.","authors":"Li Hua, Meiting Wang, Xinlong Wei","doi":"10.1080/09593330.2025.2521515","DOIUrl":"10.1080/09593330.2025.2521515","url":null,"abstract":"<p><p>Microplastics (MPs) can coexist with pesticides in soil for a long period, forming combined pollution. <i>Brassica chinensis L</i> was used as the test plant and the differences in the effects of traditional microplastic polyethylene (PE MPs) and biodegradable microplastic polylactic acid (PLA MPs) alone and combination with cypermethrin pesticide on plants were studied. The results showed that the inhibitory effect of the PLA MPs on <i>Brassica chinensis L</i> was greater than PE MPs and that the inhibitory effect of microplastics in combination with cypermethrin pesticides was greater than that of microplastics alone. <i>Brassica chinensis L</i> avoided oxidative damage by increasing the stress level at a low PE MP concentration (2%) and the antioxidant defense capability gradually weakened as the concentration increased. As the concentration of PLA MPs increased, the oxidative damage of plant roots was further aggravated. The biomass and quality of <i>Brassica chinensis L</i> showed the pattern of 'low promotion and high inhibition' whether PE MPs were treated alone or combined with cypermethrin pesticides. While PLA MPs treatment groups showed a pattern of 'stronger inhibition with increasing microplastic concentration'.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4842-4851"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144483721","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}

{"title":"Highly efficient activation of periodate by anodic contact glow discharge electrolysis for 3-chlorophenol degradation in water.","authors":"Chao Zhang, Yufan Liu, Huimiao Zhou, Jinyu Zhang, Haiming Yang, Lixiang Li","doi":"10.1080/09593330.2025.2523562","DOIUrl":"10.1080/09593330.2025.2523562","url":null,"abstract":"<p><p>Periodate (PI) activation by anodic contact glow discharge electrolysis (ACGDE) was used to degrade 3-chlorophenol (3-CP) in water. The effects of the PI concentration, current intensity (mA), anions (Cl^- and SO₄^2-), organic compounds (humic acid and RhB), and initial solution pH on the 3-CP removal rate were studied. The results show that PI was efficiently activated by ACGDE, leading to the rapid degradation of 3-CP. For the 1.5-mmol/L (mM) PI activated by ACGDE for 1.5 min, the removal rate of 3-CP (100%) was 19 or 6.7 times higher than that of PI or ACGDE alone. The decomposition of 3-CP was affected by the initial pH. Cr⁶⁺ (·H scavenger), 2-propanol (•OH scavenger), and trichloroacetic acid (TCAA, O₂^·- scavenger) were added to study the mechanism of PI activation by ACGDE and the main active species responsible for 3-CP degradation. H• generated by ACGDE is a key active species to activate PI. In addition, ACGDE may be a highly efficient approach for PI activation.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4963-4972"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144559598","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}

{"title":"Research on the influence of nozzle structure parameters and surfactant-magnetised water on atomisation characteristics and its field application.","authors":"Jin Hou, Botao Qin, Qun Zhou","doi":"10.1080/09593330.2025.2522475","DOIUrl":"10.1080/09593330.2025.2522475","url":null,"abstract":"<p><p>To effectively promote the efficiency of spray-based dust suppression, the influence of nozzle structure parameters and surfactant-magnetised water on atomisation characteristics was studied in this study. The experimental results show that the surfactant-magnetised solution boasts great wetting performance for coking coal at the surfactant concentration of 0.03 wt%. The droplet velocity was effectively improved, reaching 7.5 m/s at a distance of 50 cm. When the nozzle diameter was less than 1.5 mm, the growth rate of droplet particle size was small, but when the nozzle diameter was greater than 1.5 mm, the growth rate of droplet particle size was rapidly increased. There is no linear relationship between the height of the nozzle and the droplet size. Based on these studies, a dust removal system of this combined technology consisting of a surfactant-adding device, a magnetised apparatus and atomisation devices was designed and installed at a fully mechanised mining face. The respirable dust and total dust suppression efficiencies achieved were 85.3% and 90.4%, respectively.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4889-4904"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144636613","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}

{"title":"Enhancing anaerobic digestion performance of food waste through direct interspecies electron transfer via conductive materials.","authors":"Jing Tang, Kexin Tong, Jun Lee, Chi Zhang, Ze Lv, Tao Xiang, Yang Su","doi":"10.1080/09593330.2025.2523569","DOIUrl":"10.1080/09593330.2025.2523569","url":null,"abstract":"<p><p>To enhance the anaerobic digestion efficiency of food waste, this study investigated the effects of four conductive materials, including granular activated carbon (GAC), powdered activated carbon (PAC), magnetite (Fe₃O₄), and hematite (Fe₂O₃), on direct interspecies electron transfer (DIET). Results indicated that all four conductive materials enhanced the digestion performance. PAC at 10 g/L exhibited the best performance, achieving a methane yield of 308 mL/g volatile solids (VS), 12.41% higher than the control group without conductive material addition. At the end of the reaction, the system pH was 6.76, volatile fatty acids concentration decreased to 486 mg/L, soluble chemical oxygen demand removal reached 81%, and ammonia nitrogen accumulation was 713 mg/L. Microbial community analysis showed that adding PAC selectively increased the relative abundance of acidifying bacteria (<i>Firmicutes</i> and <i>Bacteroidota</i>) by 8.16% and methanogenic bacteria (<i>Euryarchaeota</i>) by 4.36%. The relative abundance of <i>Methanosaeta</i> increased from 39.23% to 49.15%. Response surface methodology optimisation further identified ideal conditions: total solids content of 9.49%, inoculum ratio of 2.77/1, and PAC dosage of 10.87 g/L, resulting in a maximum methane yield of 347.60 mL/g VS. These findings demonstrate PAC's potential as an effective additive for improving anaerobic digestion performance by enhancing DIET, methane production and overall efficiency in food waste resource utilisation.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4973-4985"},"PeriodicalIF":2.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527022","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}