Environmental Technology & Innovation最新文献

{"title":"Electrokinetic transport mechanisms of rare earth elements in ion-adsorption deposits: An integrated model approach","authors":"Jie Xu ,&nbsp;Gaofeng Wang ,&nbsp;Bowen Ling ,&nbsp;Shichang Kang ,&nbsp;Yongqiang Yang ,&nbsp;Xiaoliang Liang ,&nbsp;Jingming Wei ,&nbsp;Yongjin Xu ,&nbsp;Jianxi Zhu ,&nbsp;Hongping He","doi":"10.1016/j.eti.2025.104276","DOIUrl":"10.1016/j.eti.2025.104276","url":null,"abstract":"<div><div>Heavy rare earth elements (REEs) are critical strategic resources for advanced technologies and the low-carbon economy transition. Ion-adsorption deposits (IADs) represent the primary sources of heavy REEs, yet their mining has caused severe environmental impacts. Electrokinetic mining (EKM), a sustainable alternative, promises efficient REE recovery from IADs. However, the electrokinetic transport mechanisms of REEs in IADs remain unclear, and predictive models are lacking. Here, we develop an integrated EKM (IEKM) model that rigorously incorporates coupled effects of diffusion, convection, electromigration, electroosmosis, and electrolysis to resolve REE transport in IADs. The IEKM model was validated using a 14-ton-scale IAD EKM, accurately simulating REE and leaching agent (NH₄⁺) ion transport. The predicted REE recovery efficiency is 80.97 % after 11 days of EKM, aligning with experimental results (88.28 ± 17.00 %). Significantly, the IEKM model quantitatively determines that diffusion, convection, electromigration, electroosmosis, and electrolysis contribute 3.06 %, 2.90 %, 82.91 %, 0.20 %, and 10.93 %, respectively, to REE transport. Unexpectedly, electromigration emerges as the dominant mechanism governing REE electrokinetic transport in IADs with significant influence by electrolysis, while electroosmosis exhibits negligible contribution, contradicting conventional expectations. Furthermore, electrolysis consumed 57.95 % of input energy due to water splitting, leaving only 42.05 % for direct REE transport. This work advances fundamental understanding of REE electrokinetic transport in IADs and establishes an industrially viable model, bridging experimental and numerical modeling to facilitate practical applications of environmentally sustainable EKM technology in resource recovery.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104276"},"PeriodicalIF":6.7,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"State of the art on fungal biodegradation of persistent organic pollutants in soils and innovative strategies for isolating relevant candidate strains","authors":"Charbel Elias ,&nbsp;Stéphane Ranque ,&nbsp;Laure Malleret","doi":"10.1016/j.eti.2025.104247","DOIUrl":"10.1016/j.eti.2025.104247","url":null,"abstract":"<div><div>The pollution by persistent organic pollutants (POPs) in terrestrial and soil ecosystems pose a significant global threat, due to their long-term stability, widespread dissemination and detrimental effects on human health and ecological systems. In recent years, myco-remediation has emerged as a sustainable and cost-effective restoration technology, offering several advantages over bacteria, given the omnipresence of fungi, their capacity to tolerate and survive harsh environmental conditions, as well as their ability to oxidize a broader range of compounds, particularly those with high molecular weight and increased recalcitrance. This review explores past and recent advancements in fungal bioremediation of soil contaminated with 19 persistent organic pollutants (POPs) listed under the Stockholm Convention, including ten from the original \"dirty dozen\" and nine of the newly registered POPs. Fungal species which had demonstrated POP degradation capabilities are delved and their advantages, limitations, and degradation pathways are assessed. A comprehensive review of fungal species applied for POP bioremediation is provided, highlighting the most frequently employed strains. The review also highlights the need of agreeing on standardized approaches, including criteria to select truly effective fungal remediation strains as well as appropriate initial POP concentrations. To guide future research, it provides also insights on innovative fungal isolation approaches, and explores advancements in characterization strategies, to uncover promising candidates for soil bioremediation. Innovations in myco-remediation hold great promise for effectively mitigating POPs in soil environments. This review highlights the growing importance of sustainable solutions for persistent organic pollutants management.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104247"},"PeriodicalIF":6.7,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 preparation of Z-scheme based graphene/TiO2/MnO2 hybrid nanomaterial: A dual application in hazardous dye and antibacterial reduction","authors":"Bhuvaneswari kandasamy ,&nbsp;Pazhanivel Thangavelu ,&nbsp;Sarun Phibanchon ,&nbsp;Rotruedee Chotigawin ,&nbsp;Taddao Pahasup-anan ,&nbsp;Surachai Wongcharee ,&nbsp;Ranjith Rajendran ,&nbsp;Thammasak Rojviroon ,&nbsp;Kowit Suwannahong","doi":"10.1016/j.eti.2025.104262","DOIUrl":"10.1016/j.eti.2025.104262","url":null,"abstract":"<div><div>This study explores the photocatalytic degradation efficacy of methylene blue (MB) dye, a prevalent water pollutant, employing graphene/TiO₂/MnO₂ (GTM) hybrid photocatalyst. The photocatalytic degradation performance against MB dye revealed that the as-prepared GTM hybrid photocatalyst exhibited superior activity, achieving a degradation efficiency of 97 % within 40 min of UV–visible light irradiation. Notably, the GTM hybrid photocatalyst demonstrated a high-rate constant (k) of 0.174 min⁻¹ , surpassing that of the bare TiO₂ (k = 0.030 min⁻¹) and MnO₂ (k = 0.047 min⁻¹) photocatalysts. Cyclic stability tests up to ten cycles confirmed the excellent durability of the GTM hybrid photocatalyst, retaining 80 % of its initial activity. Hydroxyl and superoxide radicals play a significant role in the degradation process, while the heterojunction structure significantly enhances charge separation, further improving photocatalytic efficiency. The enhanced photocatalytic performance of the GTM hybrid can be attributed to the improved charge carrier separation, augmented surface area, and 2D/2D/1D heterojunction formation. Also, the antibacterial activity of the as-prepared photocatalyst was analyzed over <em>Klebsiella pneumoniae (KP)</em> and <em>Staphylococcus aureus (SA)</em> using the agar well diffusion method. The observed results show that the GTM has effective antibacterial activity against both microorganisms. This research contributes to developing sustainable materials and processes for environmental remediation, aligning with the principles of green chemistry and promoting a cleaner, healthier environment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104262"},"PeriodicalIF":6.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Advancing bio-recycling of nylon monomers through CRISPR-assisted engineering","authors":"Bahareh Arab ,&nbsp;Jinjin Chen ,&nbsp;Anna N. Khusnutdinova ,&nbsp;C. Perry Chou ,&nbsp;Yilan Liu","doi":"10.1016/j.eti.2025.104267","DOIUrl":"10.1016/j.eti.2025.104267","url":null,"abstract":"<div><div>Plastic waste is a global environmental crisis, and nylon—a widely used polyamide—contributing significantly due to its extensive applications in textiles, automotive components, and packaging. Post-lifecycle degradation of nylon releases monomers like 1,6-hexamethylenediamine (HD) and 6-aminocaproic acid (ACA), which persist in ecosystems, posing toxicity and bioaccumulation risks. In this study, we employed a CRISPR-assisted directed evolution (CDE) to engineer <em>Pseudomonas putida</em> KT2440 for efficient utilization of HD as the sole nitrogen source, coupling its degradation to bacterial growth. Genomic and transcriptomic analyses prioritized potential enzymes involved in HD degradation. Using CRISPR interference (CRISPRi) and expert-guided screening, we identified three key enzymes including KgtP transporter, AlaC transaminase, and FrmA dehydrogenase that are critical to the KAF pathway. The functionality of these enzymes was confirmed in <em>P. putida</em> and further validated through heterologous expression in <em>Escherichia coli</em>. The CDE and growth-coupled strategy, together with the KAF pathway we discovered, is essential for our future efforts to engineer synthetic bacterial consortia capable of degrading mixed plastic monomers. In the long term, we envision integrating these consortia with synthetic biology tools to degrade complex plastic polymers and convert them into valuable chemicals, advancing circular economic efforts for sustainable plastic waste management and environmental protection.</div></div><div><h3>Synopsis</h3><div>CRISPR systems engineered <em>Pseudomonas putida</em> for efficient nylon monomer degradation, unveiling a novel pathway and advancing plastic waste recycling and environmental mitigation strategies.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104267"},"PeriodicalIF":6.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"The impact of functional membrane covering on nitrogen and sulfur transformation of sludge composting and its microbial action mechanism","authors":"Rongrong Li ,&nbsp;Rui Cai","doi":"10.1016/j.eti.2025.104266","DOIUrl":"10.1016/j.eti.2025.104266","url":null,"abstract":"<div><div>Nitrogen and sulfur are essential nutrients for promoting plant growth. Investigating the transformation mechanisms of nitrogen and sulfur during composting has substantial guiding significance for enhancing the fertility of composting products. Functional membrane-covered aerobic composting systems have consistently demonstrated their ability to accelerate compost maturation. However, the transformation mechanisms of nitrogen and sulfur within this system, as well as the associated microbial processes, remain inadequately understood. In this study, the impact of functional membrane coverage (FM) on the transformation of nitrogen and sulfur compounds during sludge composting was studied, along with an investigation into the microbial mechanisms underlying nitrogen and sulfur cycling. The results showed that nitrite ammonification, nitrite oxidation, and nitrate reduction were the main nitrogen transformation steps during the early days of composting. In the middle and later stages, the denitrification intensified, leading to a decrease in available nitrogen content. Sulfate reduction, sulfide oxidation, and thiosulfate dispropotionation constituted the primary sulfur transformation steps, with thiosulfate oxidation intensity gradually increasing. FM inhibited denitrification, sulfite reduction, and thiosulfate dispropotionation, thereby reducing nitrogen and sulfur loss by 14.1 % and 8.1 %, respectively, and increasing available nitrogen and available sulfur content by 14.9 % and 9.6 %, respectively. The main participants involved in nitrogen cycle were <em>Nitrospira</em>, <em>Luteimonas</em>, <em>Streptomyces</em>, <em>Pseudoxanthomonas</em>, <em>Actinomadura</em>, and <em>Pseudomonas.</em> A wide variety of functional microorganisms were involved in the sulfur cycle, with their succession during composting being especially prominent. In summary, the FM system can serve as an effective approach to enhance the fertility of sludge compost products.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104266"},"PeriodicalIF":6.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Sustainable nexus for treating acid mine drainage: How does bio-alkali matrix impact acidity neutralization and heavy metal removal?","authors":"Cong Peng ,&nbsp;Li Zeng ,&nbsp;Yonghong Liu ,&nbsp;Zhenyu Zhang ,&nbsp;Jiayi Tang ,&nbsp;Zhenghua Liu ,&nbsp;Zhaoyue Yang ,&nbsp;Huaqun Yin ,&nbsp;I.A. Ibrahim ,&nbsp;Ke Zhang ,&nbsp;Zhendong Yang","doi":"10.1016/j.eti.2025.104272","DOIUrl":"10.1016/j.eti.2025.104272","url":null,"abstract":"<div><div>Acid mine drainage (AMD), characterized by high acidity and elevated concentrations of heavy metals, poses a persistent threat to ecological systems. Conventional neutralizers (NaOH, Na₂CO₃, Ca(OH)₂) raise pH effectively but generate large sludge volumes and incur high operating costs. Here, three urease-positive microbial consortia, enriched from soil and municipal activated sludge, were cultivated with urea to produce bio-alkali matrices (BAM-A/B/C, final pH 9.3). Abundant –CONH₂, –NH₂, –OH, and –COOH groups capable of chelating metal ions were found in BAM, suggesting alkaline buffering is complemented by ligand-mediated metal sequestration. When each BAM was mixed with AMD at a 3:10 vol ratio, the effluent pH stabilized at 7 and removal efficiencies reached ∼100 % for Al, Fe, Cr, Cd; &gt; 90 % for As, V, Co, Ni; 79–80 % for Cu; and 60 – 62 % for Mn. Geochemical analysis identified Fe/Al hydroxysulfates and organo-metal complexes as dominant precipitates. A full cost comparison showed BAM-A lowered treatment expenses to 35.5 RMB per m³, which is 12 % below NaOH and 26 % below Ca(OH)₂, while reducing sludge generation. Coupling BAM with sulfate-reducing bacterial systems is advisable to enhance Mn and SO₄^2- removal. Overall, BAM provides an economical and environmentally sustainable alternative for AMD neutralization by uniting alkaline buffering with organic complexation.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104272"},"PeriodicalIF":6.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Phosphoric acid modified biochar enhanced heavy metals passivation via accelerating humification and bioremediation in sewage sludge composting","authors":"Xiuwen Qiu ,&nbsp;Mengting Feng ,&nbsp;Ruixu Chen ,&nbsp;Jiajia Chen ,&nbsp;Xiangrong Zheng ,&nbsp;Xia Mao ,&nbsp;Wei Song ,&nbsp;Guixiang Zhou","doi":"10.1016/j.eti.2025.104275","DOIUrl":"10.1016/j.eti.2025.104275","url":null,"abstract":"<div><div>This study investigated the effects of phosphoric acid modified coconut shell biochar (PMB) on humification parameters, heavy metals bioavailability, and the structure and metabolism of bacterial community during sewage sludge composting. The results indicated that PMB addition decreased the polyphenols content and increased polyphenol oxidase (PPO) and laccase activity. At the end of composting, the humic acid (HA) concentration of PMB treatment rose by 22.19 %, and the degree of polymerization and humification index (HIX) also increased significantly, compared with control (CK) treatment. In addition, the bioavailable contents of Cu, Fe, Mn, Ni, Pb and Zn in PMB were significantly lower than CK, which decreased by 19.32 %, 35.28 %, 39.72 %, 41.99 %, 36.28 % and 32.27 %, respectively. The addition of PMB enhanced the richness and diversity of bacterial community. The abundances of sequences associated with carbohydrate metabolism, amino acid metabolism, energy metabolism and lipid metabolism in PMB were consistently higher than that in CK. Correlation analysis showed that <em>Streptomyces</em>, <em>Bacillus</em>, <em>Pseudomonas</em> and <em>Taibaiella</em> were significantly positively associated with heavy metals passivation and HA formation. These findings suggested that PMB promoted organic matter decomposition and HA formation, and decreased bioavailability of heavy metals by promoting bacterial bioremediation and HA absorption and complexation. Therefore, the addition of PMB is a suitable strategy to mitigate the environmental risk of heavy metals in sewage sludge.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104275"},"PeriodicalIF":6.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 co-inoculation with Bradyrhizobium and Trichoderma harzianum on soybean nitrogen nutrition and multispectral traits","authors":"Sanja Kajić ,&nbsp;Lana Živković ,&nbsp;Boris Lazerević ,&nbsp;Petra Borovec ,&nbsp;Adrijana Novak ,&nbsp;Botagoz Mutaliyeva ,&nbsp;Tamila Turebayeva ,&nbsp;Galyia Madybekova ,&nbsp;Marko Vinceković","doi":"10.1016/j.eti.2025.104274","DOIUrl":"10.1016/j.eti.2025.104274","url":null,"abstract":"<div><div>This study evaluates the potential of co-encapsulated native <em>Bradyrhizobium</em> spp. strains and <em>Trichoderma harzianum</em> T1, delivered via biodegradable microparticles, to enhance growth, nitrogen uptake, and physiological performance in soybean (<em>Glycine max</em> L.). The microbial consortium was applied to soybean roots to assess synergistic effects on biological nitrogen fixation and plant development. Native <em>Bradyrhizobium</em> strains exhibited high tolerance to environmental stressors, including elevated temperatures, low pH, and salinity, and all produced indole-3-acetic acid (IAA), supporting their role as plant growth-promoting rhizobacteria. The most effective strains in improving nitrogen content were S1, S2, and S3, while S5, S4, and S3 were most effective in promoting dry biomass accumulation. Inoculation with <em>T. harzianum</em> increased shoot nitrogen content by an average of 0.2 % over rhizobial-only treatments. Co-inoculation with <em>T. harzianum</em> and specific rhizobial strains (S1, S4, S6) led to synergistic effects, significantly enhancing plant dry weight, nodule biomass, and multispectral traits. Multispectral imaging, combined with principal component analysis, revealed treatment-specific physiological responses that were not evident from biomass or nitrogen measurements alone, highlighting its sensitivity in detecting microbial effects on plant health. These findings support the application of encapsulated microbial consortia as a sustainable strategy to improve soybean productivity under diverse environmental conditions.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104274"},"PeriodicalIF":6.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Assessment of soil microbial communities and diversity in typical coastal wetlands along a succession gradient: Implications for reconstructing the long-term evolution of coastal wetlands","authors":"Xiao Huang ,&nbsp;Ze He ,&nbsp;Ying Wang ,&nbsp;Fenghua Wang ,&nbsp;Ziying Zheng ,&nbsp;Yutao Zuo ,&nbsp;Yihang Cao ,&nbsp;Xiaomeng Yao ,&nbsp;Zijing She ,&nbsp;Yawen Ge ,&nbsp;Yuecong Li","doi":"10.1016/j.eti.2025.104263","DOIUrl":"10.1016/j.eti.2025.104263","url":null,"abstract":"<div><div>To more precisely reconstruct the long-term evolutionary processes of coastal wetlands in the past using microbial deposition records, it is essential to differentiate various types of coastal wetlands along sea-land gradients based on their community and diversity characteristics, and to identify the primary factors influencing them. In this study, based on high-throughput sequencing technology, we revealed the microbial community composition and diversity characteristics of four major coastal wetlands in Bohai Bay, including Lagoon &amp; Estuary (L&amp;E), <em>Suaeda</em> (SU), Freshwater-<em>Phragmites</em> (F-P), and Freshwater-Weeds (F-W), and discussed their relationship with environmental factors. The results showed that dominant microbial communities had clear indicative significance for corresponding wetlands. In the L&amp;E wetlands, the microbial communities are characterized by dominant taxa spanning multiple taxonomic ranks: Desulfobacterota, Gammaproteobacteria, and Desulfuromonadia. In SU wetlands, the indicator taxa comprised Flavobacteriales, Balneolales, and Planococcaceae. In F-P wetlands, the differentially abundant taxa included Acidobacteriota, Myxococcota, Gemmatimonadota, and Planctomycetota. Salinity and vegetation cover were the most important factors affecting soil microbial composition in Bohai Bay coastal wetlands. F-P wetlands had the highest richness and evenness of microbial species, followed by L&amp;E, F-W, and SU wetlands. Na⁺ and Cr contents were negatively correlated with microbial diversity, while vegetation cover, TOC and P contents were positively correlated with microbial diversity. Our study emphasized the significance of understanding the relationship between microbial community composition and environmental factors in different wetlands in Bohai Bay, and lay a foundation for wetland biodiversity conservation and reconstruction of past ecosystem succession processes.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104263"},"PeriodicalIF":6.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Evaluating real time control strategies for UV water treatment pump systems","authors":"Said Riahi ,&nbsp;Naoufel Zitouni ,&nbsp;Rim Attafi ,&nbsp;Habib Kraiem ,&nbsp;Aymen Flah ,&nbsp;Ahmad A. Mousa ,&nbsp;Claude Ziad El-Bayeh","doi":"10.1016/j.eti.2025.104258","DOIUrl":"10.1016/j.eti.2025.104258","url":null,"abstract":"<div><div>The purpose of water treatment using ultraviolet radiation is to disrupt the development and multiplication of microorganisms byinhibiting their growth and reproduction. Ultraviolet treatment has emerged as a cost-effective solution for producing clean and potable water of optimal quality, especially in regions where access is challenging and critical. UV water treatment is a sophisticated process that necessitates the collaboration of multidisciplinary teams to address scientific aspects. The implementation of control systems faces challenges, including non-linearity, uncertainty, and latency. Given the significance of water treatment through UV radiation and the imperative to ensure water quality, it is crucial to control both the lamp intensity (UVDose) and the water flow. The main objective of this article is to implement a sliding mode control law and state feedback for the motor of the centrifugal pump using the Bond Graph approach. The aim is to regulate the motor speed and, consequently, the water flow rate. This enables the influencing of the bacteriological attack time of the water, where the exposure time of water to the UV lamp determines the treatment result. The experimental results obtained, along with a comparative study, have allowed us to emphasize the robustness of sliding mode control in comparison to state feedback control. These studies were conducted following parametric variations applied to the different parameters of the motor pump. Design of the UV water treatment system powered by a photovoltaic source</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104258"},"PeriodicalIF":6.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}