Environmental Technology最新文献

{"title":"Study on the structure characterisation and swelling properties of the CMSM.","authors":"Xiaokai Liu, Hao He, Li Wang","doi":"10.1080/09593330.2025.2499974","DOIUrl":"10.1080/09593330.2025.2499974","url":null,"abstract":"<p><p>In order to further understand the potential applications of cellulose membrane materials in adsorption, drug delivery, and biomedical applications, to optimise their material properties, improve their performance, and expand their application fields, carboxymethyl Salix powder (CMS) was prepared by etherification reaction using Salix powder (SPP) as the raw material. Carboxymethyl Salix powder membrane (CMSM) was subsequently prepared through wet spinning technology. The swelling properties of CMSM were investigated. The results showed that the swelling degree reached the maximum at 45 min, pH 5, temperature of 65°C, and a NaCl concentration of 0.04 mol/L, reaching 7.95 g/g. Through model fitting, it was found that CMSM fits well with the Fickian diffusion model in the early stage, while the entire swelling process fits well with the Schott model. Characterisation results indicate that the structure of CMSM is loose, porous, and uneven on the surface. This structure facilitates the diffusion of water molecules and enhances the water absorption performance of CMSM. The structure of CMSM is similar to the disordered structure of glass or plastic, presenting an amorphous structure. Additionally, CMSM exhibits good thermal stability. By regulating the swelling behaviour of CMSM, this study can develop innovative membrane materials with environmental responsiveness and multifunctionality, promoting the application of green and sustainable materials and providing theoretical support for the design of new composite membranes.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4227-4236"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144247137","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":"Influence of support medium height on the optimization of performance of an Upflow Anaerobic Hybrid Reactor (UAHB) treating synthetic wastewater.","authors":"Alvaro Javier Esteban Villota Mora, Yeimy Ordoñez Muñoz, Eduardo Borges Lied, Vsevolod Mymrin, Karina Querne de Carvalho, Fernando Hermes Passig","doi":"10.1080/09593330.2025.2519960","DOIUrl":"10.1080/09593330.2025.2519960","url":null,"abstract":"<p><p>The support media of upflow anaerobic hybrid reactors (UAHB) facilitates the formation and retention of microbial biofilm and the contact between the influent and microorganisms. Previous studies demonstrated the importance of support media height (SMH) to organic matter removal; however, the influence of this parameter in the UAHB reactor performance under varying conditions is still a gap. The Central Composite Design (CCD) method was applied to optimize the removal of organic matter by varying the cross-sectional area and height of the reactor based on 42 studies. The modelling indicated 72-87% COD removal efficiencies with 0.007 m² cross-sectional area and 0.75 m height, with 5.5 L total volume. Thus, three pilot-scale UAHB reactors, filled with Corrugated Polyvinyl Chloride (PVC) rings at different heights (6, 15, and 24 cm), were operated with a hydraulic retention time of 10 h, treating synthetic effluent with a COD of 490 mgO₂ L^-1. Unlike previous studies, this study evaluated identical UAHBs operating in parallel under controlled conditions. The UAHB reactors presented stability, buffering capacity, and neutral pH during the operation. The reactor with higher SMH (24 cm) achieved higher removal efficiencies of turbidity (90%), COD (72.6%), and TS (63%). Variations in SMH affected reactor performance, as corroborated by the negative and 'very strong' correlation for turbidity, COD, and TS and a 'moderate' correlation for fixed and volatile solids. The novelty of this study lies in its comprehensive assessment of how varying SMH affects UAHB reactor performance, guiding future advancements in its design for efficient wastewater treatment.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4752-4773"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144483719","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 synthesis of Collagen/V₂CT_x composite aerogel by directional freeze-drying with excellent mechanical strength and oil absorption.","authors":"Erhui Ren, Jiatong Yan, Shan Jiang, Biyu Peng, Ronghui Guo, Fan Yang, Hongyan Xiao, Mi Zhou","doi":"10.1080/09593330.2025.2485356","DOIUrl":"10.1080/09593330.2025.2485356","url":null,"abstract":"<p><p>Efficient removal of oils has attracted wide attention and researchers have tried to develop effective oil absorbents with increasingly serious oily pollution. Collagen (COL)/V₂C Aluminium Carbide (V₂CT_x) composite aerogels were synthesized using a simple method of blending and directional freezing-drying with original materials of COL and V₂CT_x, in which V₂CT_x MXene was prepared by etching V₂AlC with hydrofluoric acid under stirring at room temperature. Modern testing and analysis techniques were used to characterize the structural properties and surface morphology of the hybrid aerogel. The COL/V₂CT_x composite aerogel shows excellent mechanical properties with 83 kPa compressive stress at 70% strain, low density (about 25 mg/cm³), outstanding thermal stability with 58.67% weight loss from 240℃ to 600℃ and thermal insulation with heat conductivity coefficient 0.05304 W/mK. Importantly, COL/V₂CT_x aerogel exhibits higher oil absorption capacity and stability than that of COL aerogel for various oils. The absorbency of COL/V₂CT_x aerogel for methylene chloride is up to 54 times its weight under Vander Waals forces, intermolecular interaction, and capillary interaction between the aerogel and oily liquids. Therefore, COL/V₂CT_x aerogel possesses a promising application in the field of oil absorption and wastewater treatment.<b>HIGHLIGHTS</b> A novel COL/V₂CT_x aerogel was prepared by a simple method of blending and directional freezing-drying.The absorption capacity of COL/V₂CT_x aerogel for methylene chloride achieves up to 54 times its weight.The COL/V₂CT_x composite aerogel exhibits excellent mechanical properties with 83 kPa compressive stress at 70% strain, low density (about 25 mg/cm³), and good thermal stability with 58.67% weight loss from 240℃ to 600℃.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4417-4431"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143993418","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":"Effects of ozonation sludge reduction on nutrient removal and microbial community diversity of conventional A²/O and reversed A²/O processes.","authors":"Junkun Feng, Shiyun Zhu, Shouqiang Huang, Yalin Yu, Nanwen Zhu, Amin Mojiri, Dongdong Ge","doi":"10.1080/09593330.2025.2506022","DOIUrl":"10.1080/09593330.2025.2506022","url":null,"abstract":"<p><p>To optimise ozonation sludge reduction in the activated sludge process, it is crucial to monitor nutrient removal and pay particular attention to the influential biological species. This study employed high-throughput sequencing to examine the microbial composition and diversity in the anaerobic-anoxic-oxic (A²/O) process, the A²/O process with ozonation, and the reversed A²/O process with ozonation. The diversity analysis aimed to identify discrepancies and similarities in microbial communities among these groups, thereby elucidating the varying biological efficiencies. Furthermore, the results from Illumina MiSeq sequencing revealed significant diversification in microbial community structures in different processes. Ozonation sludge notably inhibited certain species, including the order <i>Bacteroidales</i> within the class <i>Bacteroidia</i>, as well as the orders <i>Rhizobiales</i> and <i>Rhodospirillales</i> within the class <i>Alphaproteobacteria</i>. Additionally, ozonation sludge exerted a notable impact on specific orders within the class <i>Gammaproteobacteria</i>, including <i>Aeromonadales</i>, <i>Chromatiales</i>, and <i>HOC36</i>. In contrast, it stimulated the proliferation of other microbial groups, such as <i>Lactobacillales</i>, <i>Clostridiales</i>, as well as <i>Burkholderiales</i> and <i>Rhodocyclales</i>. The inhibition and promotion of ozonation sludge in conventional and reversed A²/O processes resulted in various microbial richness and diversity, which rendered the distinctive biochemical activities and wastewater treatment performances. <i>Betaproteobacteria</i> increased significantly, especially in the reversed A²/O process, and <i>Betaproteobacteria</i> played an important role in the nitrogen removal and phosphorus removal process. These findings are useful for guiding the ozonised sludge system to reduce carbon, denitrification, and phosphorus removal to meet the emission standards, and the identification and enhancement of the construction of potential key biological flora for better wastewater treatment and sludge reduction.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4448-4462"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144126973","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":"Enhanced deep-dewatering of high EPS-Containing sludge waste using PDMDAAC-PFS and H₂O₂.","authors":"Yong-Tao Lv, Jiaxin Liu, Kangning Ren, Junqi Qiu, Jianfeng Dai, Danxi Huang, Lei Wang","doi":"10.1080/09593330.2025.2507390","DOIUrl":"10.1080/09593330.2025.2507390","url":null,"abstract":"<p><p>Large quantities of sludge from wastewater treatment plants require dewatering before final disposal, with extracellular polymeric substance (EPS) significantly impacting sludge dewatering performance. This study achieved deep-dewatering of sludge with high EPS content (164.36-181.62 mg/g VSS) by reducing moisture content to 57.2% using a combination of polydimethyldiallylammonium chloride-ferric sulphate (PDMDAAC-PFS) and hydrogen peroxide (H₂O₂). Using PDMDAAC-PFS alone decreased tightly bound EPS (TB-EPS) from 152.7 to 135.3 mg/g VSS while increasing EPS by 77.2%, indicating that the reagent solubilised TB-EPS and disrupted the cell wall, releasing intracellular bound water. Further addition of H₂O₂ reduced total EPS by 34.2-55.1%, primarily affecting extracellular protein (PN) in TB-EPS. Three-dimensional fluorescence and Fourier transform infrared spectrometry revealed that the reduced PN in TB-EPS consisted mainly of tyrosine proteins, with the destruction of hydrophilic groups (amino group and carbonyl group) contributing to the release of bound water. Quenching tests demonstrated that hydroxyl radicals generated by H₂O₂ were crucial for EPS oxidation, contributing to 21.9% of sludge dewatering. Additionally, PDMDAAC-PFS re-flocculated the structurally damaged sludge into larger, more porous particles, enhancing the dewatering process. Thus, this study presents a novel method of deep-dewatering for waste sludge containing high EPS content.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4520-4531"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144149894","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":"Modelling wastewater treatment plant odour dispersion in weak wind conditions: importance of high-resolution meteorological data.","authors":"Cristiana Morosini, Patrizia Favaron, Elisabetta Zanardini, Vincenzo Torretta","doi":"10.1080/09593330.2025.2501297","DOIUrl":"10.1080/09593330.2025.2501297","url":null,"abstract":"<p><p>Odour emissions from wastewater treatment plants (WWTPs) represent one of the major causes of community's complaints since they can spread over large distances, influenced by air dispersion phenomena and particular topographic or meteorological conditions. The modelling tools, normally used for simulating odour emissions, can be affected by some limitations, often due to the refinement of input meteorological data, thus requiring an accurate evaluation. To investigate this aspect, a measurement campaign was performed at a WWTP located in Northern Italy, where a comparison between a conventional (CA) vs. a 3D ultrasonic anemometer (UA) was carried out from 14 June to 17 July 2018. Even if the UA has been already used in other odour-related studies, to the authors' best knowledge, this represents the first investigation where the results, obtained by feeding dispersion models with CA and UA input data, were compared. The location, the site complex orography and the presence of a conventional meteorological station installed at the plant were the main factors taken into account for the WWTP choice. These features, shared by many other worldwide sites, contribute to make this site representative of a common situation. The comparison showed a huge difference in modelled odour concentrations between the two measurements, suggesting that the use of high-resolution meteorological data, as an input to modelling tools, could help the plant managers to adopt smart strategies for minimizing odour nuisance spread (e.g. a more suitable definition of the daily hours to evacuate the sludge from the plant), therefore reducing community's complaints.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4320-4331"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143991515","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":"Insight into the efficient degradation of 2,4,6-trichlorophenol by a three-electrode simultaneous oxidation-reduction system: kinetics and mechanism.","authors":"Ran He, Hong Liang, Qiang Zheng, Hong Huang, Youli Yang, Xi Li","doi":"10.1080/09593330.2025.2511184","DOIUrl":"10.1080/09593330.2025.2511184","url":null,"abstract":"<p><p>This study developed a three-electrode system that integrates electro-Fenton (EF) and electrocatalytic hydrodechlorination (ECH) technologies, enabling simultaneous redox processes for the efficient degradation of chlorophenolic pollutants while minimising the formation of chlorine-containing by-products. The system includes a Pd/Ni foam electrode for enhanced hydrodechlorination and an acetylene black/Fe₃O₄ electrode for in-situ H₂O₂ generation and activation to produce hydroxyl radicals. The innovation of this work lies in the novel combination of electrochemical Fenton oxidation and electrocatalytic hydrodechlorination within a single system, offering a more efficient and environmentally friendly solution for chlorophenol degradation. Compared to the EF system, the three-electrode setup significantly improved the degradation efficiency of 2,4,6-trichlorophenol (2,4,6-TCP) and reduced by-product formation. Additionally, it showed less sensitivity to changes in current intensity and pH, offering a more robust and effective approach for water treatment. However, it is worth noting that the catalytic efficiency of the three-electrode (oxidation-reduction) system decreases gradually as the number of electrolytic cycles increases due to catalyst loss on the electrode surface. Finally, the degradation experiments of 2,4-DCP indicated that the three-electrode (oxidation-reduction) system holds considerable potential for the management of chlorophenol pollutants.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4583-4596"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144233571","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":"Forecasting urban construction waste generation utilizing the TI-TSTLNGM(1,1) Model based on the COOT Algorithm.","authors":"Wanling Zhu, Hao Cui","doi":"10.1080/09593330.2025.2506021","DOIUrl":"10.1080/09593330.2025.2506021","url":null,"abstract":"<p><p>To address the challenges in scientifically estimating and predicting construction waste (C&W) generation trends, a novel forecasting method and an enhanced grey model are presented. By transforming the initial sequence and incorporating the three-parameter interval grey number, the model effectively resolves data volatility and incompleteness. For the first time, the combination of the three-parameter interval grey number with waste generation coefficients is introduced to determine the range of C&W generation, providing a novel and more accurate approach for prediction. The time lag coefficient is further optimized using the COOT algorithm to improve prediction accuracy. Taking Guangzhou as a case study, the model demonstrates superior performance compared to traditional grey prediction and exponential smoothing methods, providing crucial reference values for C&W disposal planning and policymaking. The empirical analysis conducted in this study validates the model's rationality, applicability, and effectiveness, while providing a scientific foundation for regional construction waste treatment, disposal, resource allocation, and comprehensive management.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4432-4447"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144208085","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":"Study on selective recovery of lithium from cathode materials of decommissioned lithium batteries and its impact on corporate economic and environmental benefits.","authors":"Yanhong Li, Guosheng Luo, Haochen Wang, Hua Niu","doi":"10.1080/09593330.2025.2499973","DOIUrl":"10.1080/09593330.2025.2499973","url":null,"abstract":"<p><p>With the accelerated depletion of non-renewable resources and increased demand for lithium batteries, green recycling of lithium has become a key issue nowadays. In this study, the effects of the mass ratio of potassium persulfate to the active material of battery cathode material, roasting temperature, time, liquid-solid ratio and leaching time on the leaching rate of lithium, cobalt, nickel and manganese were investigated. For lithium-cobalt oxide battery materials, the optimal conditions were a mass ratio of K₂S₂O₇ to LiCoO₂ of 2:3, a roasting temperature of 700 °C for 60 min, and a lithium leaching rate of 98.51% and a selective leaching rate of 99.86%. For the ternary material NCM523, the optimal conditions were 1:2 mass ratio, and the lithium leaching rate reached 98.97%. The method has a positive corporate environmental impact by reducing the need for hazardous chemicals, lowering waste and operating costs, and avoiding harmful emissions. It is scalable and cost-effective and meets the needs of the battery recycling industry for environmentally friendly resource recovery. The K₂S₂O₇roasting-water leaching process proposed in this study effectively overcomes the problems of acid depletion and environmental pollution in the traditional recovery process, and provides a green and sustainable solution for the efficient recovery of lithium in lithium batteries in the future.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4213-4226"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143997341","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":"COD concentration influence on membrane fouling and microbial communities in A/O-MBR and A/A-MBR systems.","authors":"JianPing Huang, Huiru Zhang, XiaoZheng Bian, YiHao Zhao, JianQin Ma","doi":"10.1080/09593330.2025.2507391","DOIUrl":"10.1080/09593330.2025.2507391","url":null,"abstract":"<p><p>Carbon sources in membrane bioreactor (MBR) significantly affect membrane fouling by influencing microbial metabolic activities, mixed liquor characteristics, and microbial community structure. This study explores the impact of chemical oxygen demand (COD) concentrations (200 and 120 mg/L) on denitrification, phosphorus removal, membrane filtration performance, and microbial community characteristics in anaerobic/aerobic (A/O-MBR) and anaerobic/anoxic (A/A-MBR) systems. Results revealed that higher COD concentrations (200 mg/L) reduced phosphorus removal efficiency and significantly increased extracellular polymeric substance (EPS) production, membrane fouling index (FI), and flux decline rates. Under these conditions, A/A-MBR exhibited lower phosphorus removal efficiency compared to A/O-MBR. Correlation analysis showed strong relationships between FI and EPS relative hydrophobicity (RH), as well as EPS protein content (PN) and Zeta potential, highlighting EPS as a dominant factor in fouling. 16S rRNA high-throughput sequencing further demonstrated that A/O-MBR enriched denitrifying bacteria more effectively than A/A-MBR. These findings suggest that optimising COD concentrations can mitigate fouling and improve overall reactor performance.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4532-4544"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144119228","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}