Journal of water process engineering最新文献

{"title":"Unraveling the efficacy of submerged macrophytes with different stoichiometric homeostasis and rhizosphere microbes in mitigating internal phosphorus contamination","authors":"Shenyang Pan ,&nbsp;Wenlong Zhang ,&nbsp;Yasong Chen ,&nbsp;Yanan Ding ,&nbsp;Feng Yu ,&nbsp;Yajie Zhu ,&nbsp;Zikang Tang ,&nbsp;Hainan Wu ,&nbsp;Yi Li","doi":"10.1016/j.jwpe.2025.108337","DOIUrl":"10.1016/j.jwpe.2025.108337","url":null,"abstract":"<div><div>Phosphorus (P) dynamics in engineered and natural aquatic systems significantly impact water quality management and treatment processes. While physical and chemical P removal mechanisms have been extensively studied, the engineered application of biological P exploitation through plant-microbe interactions remains underdeveloped. This study investigated the potential of submerged macrophytes with different P stoichiometric homeostasis (<em>H</em>_P) to enhance internal P exploitation in lake ecosystems. Using P-fractionation techniques, DNA sequencing, and plant physiological assessments, this study quantified the treatment efficacy of different macrophyte cultivation patterns for P exploitation. The results demonstrated a quantifiable cascading mechanism wherein sedimentary P forms influenced rhizosphere microbial community structure, which subsequently affected endophytic communities and macrophyte P exploitation capacity. High-<em>H</em>_P species (<em>H</em>_P &gt; 2.0) cultivated significantly more diverse bacterial communities than low-<em>H</em>_P species (<em>H</em>_P &lt; 2.0), with network analysis revealing 91 % more microbial nodes and 105 % more positive interactions in high-<em>H</em>_P systems. Cultivation patterns significantly influenced plant growth and microbial community composition, with high-<em>H</em>_P species showed better growth in monoculture conditions (51.0 % higher biomass), while low-<em>H</em>_P species performed better in mixed cultivation systems (36.7 % higher biomass). These findings support a two-phase restoration strategy, initiated with low-<em>H</em>_P macrophyte communities to stabilize ecosystems through adaptive resilience, followed by high-<em>H</em>_P dominance to enhance long-term P control via strengthened plant-microbial synergies. This study bridges critical knowledge gaps in aquatic P metabolism while advancing engineered biological solutions for sustainable eutrophication control in natural and constructed lake systems.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108337"},"PeriodicalIF":6.3,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CoFe-enhanced N-doped carbon nanotubes for activating peroxymonosulfate to remove carbamazepine under high-salinity conditions","authors":"Xiangxing Liang,&nbsp;Zhiyuan He,&nbsp;Jingxi Lin,&nbsp;Chuan Pu,&nbsp;Daixi Zhou,&nbsp;Fei Duan,&nbsp;Gang Lu,&nbsp;Mingshan Zhu","doi":"10.1016/j.jwpe.2025.108325","DOIUrl":"10.1016/j.jwpe.2025.108325","url":null,"abstract":"<div><div>Peroxymonosulfate-based advanced oxidation processes (PMS-AOPs) have garnered significant interest due to their remarkable capability in pollutant degradation. However, the system's ability to activate peroxymonosulfate (PMS) was notably diminished under high-salinity conditions. To overcome the adverse effects of high salinity on PMS activation, this study prepared a catalyst consisting of nitrogen-doped carbon nanotubes loaded with cobalt‑iron alloys (NCNTs-CoFe). Through optimizing the Fe/Co ratio and selecting optimal reaction parameters, PMS was effectively activated, thereby mitigating the adverse effects of coexisting inorganic anions and promoting effective pollutant decomposition. In a system containing 150 mg·L⁻¹ NCNTs-CoFe_1.5 and 200 mg·L⁻¹ PMS, carbamazepine (CBZ) was completely degraded within 15 min. Furthermore, under high concentrations (up to 2500 mg·L⁻¹) of Cl⁻, NO₃⁻, and SO₄²⁻, although the degradation efficiency of the system was inhibited to a certain extent, it still showed excellent anti-interference potential. Moreover, real water matrices, and recycling experiments all demonstrated that the catalyst possessed high stability and practical application potential. Electron paramagnetic resonance (EPR), quenching experiments, and electrochemical tests indicated that sulfate radicals (SO₄^•−), hydroxyl radicals (HO^•), and non-radical singlet oxygen (¹O₂) were all involved in the degradation of CBZ. Electron transfer process (ETP) also might contribute to CBZ degradation. Through the integration of LC-MS characterization and computational toxicity prediction, CBZ was identified to undergo transformation into multiple by-products with reduced toxicity. These findings provide a new perspective on the application of PMS-AOPs in the treatment of saline wastewater.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108325"},"PeriodicalIF":6.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flow partitioning strategy for partial denitrification and anammox (PD/A) implementation: simultaneous treatment of raw sewage and secondary effluent in WWTPs","authors":"Qianyi Chen ,&nbsp;Lifang Yu ,&nbsp;Tao Yu ,&nbsp;Ye Fan ,&nbsp;Meizi An ,&nbsp;Xin Tian","doi":"10.1016/j.jwpe.2025.108276","DOIUrl":"10.1016/j.jwpe.2025.108276","url":null,"abstract":"<div><div>The Partial Denitrification/Anammox (PD/A) process is an environmentally friendly approach to remove nitrogen, but its implementation in wastewater treatment plants (WWTPs) presents significant challenges, primarily due to the complexity and fluctuation of actual sewage. In this study, an integrated fixed-film activated sludge (IFAS) coupled with PD/A process (IFAS-PD/A) was developed to simultaneously treat raw sewage and secondary effluent from the 9th WWTP in Xi'an. The preliminary batch tests identified an optimal mixing ratio of 1:5, with corresponding NO₃⁻/NH₄⁺ and COD/TN ratios of 1.24 and 2.54, respectively. This mixing ratio was subsequently applied in a 90 days long-term operation. The IFAS-PD/A system demonstrated stable nitrogen removal performance, achieving an effluent total nitrogen concentration (TN_eff) of 3.16 ± 0.92 mg·L⁻¹ with 85.14 ± 2.24 % removal efficiency. Microbial community analysis showed that the IFAS-PD/A system was dominated by heterotrophic denitrifiers (<em>Saprospiraceae</em> and <em>Thauera</em>) and <em>Candidatus Brocadia</em>. SPSS statistical analysis indicated that when TN_eff value was 2.85–3.46 mg·L⁻¹ (95 % confidence interval), the corresponding influent NO₃⁻/NH₄⁺ and COD/TN ratios were 1.2–1.4 and 2.6–3.0, respectively. Based on these results, a specific flow partitioning strategy for the application of the PD/A process in WWTPs was proposed. The strategy provid a novel insight into the practical application of the PD/A process to achieve a more efficient and energy-saving nitrogen removal in real WWTPs.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108276"},"PeriodicalIF":6.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Degradation of fluoranthene in aqueous solution and soil media by citric acid-enhanced FeS catalyzed sodium percarbonate","authors":"Xianxian Sheng ,&nbsp;Meesam Ali ,&nbsp;Ruoxuan Xu ,&nbsp;Mudassir Habib ,&nbsp;Xiang Zhang ,&nbsp;Qian Sui ,&nbsp;Rongbing Fu ,&nbsp;Shuguang Lyu","doi":"10.1016/j.jwpe.2025.108331","DOIUrl":"10.1016/j.jwpe.2025.108331","url":null,"abstract":"<div><div>Mackinawite (FeS) is a promising catalyst for advanced oxidation processes (AOPs), but its role in activating sodium percarbonate (SPC)-dominated oxidation remains unclear. Herein, citric acid (CA) was introduced as a synergistic agent to enhance FeS activation of SPC, demonstrating that SPC/FeS and SPC/CA systems hardly removed 6.8 % and 7.6 % of fluoranthene (FLT), respectively, while SPC/FeS/CA process achieved a significant 96.2 % FLT degradation. Reactive oxygen species (ROS) analysis identified HO<img> and O₂⁻<img> as the dominant contributors to FLT degradation. X-ray photoelectron spectroscopy (XPS) confirmed that S(-II) facilitated the Fe(III)/Fe(II) redox cycle, ensuring prolonged FLT degradation, which was further confirmed through Na₂S experiments. GC–MS identified benzoic acid (BA) and phthalic acid (PA) as degradation intermediates with reduced toxicity than FLT, highlighting the environmental safety of the proposed technique. SPC/FeS/CA system effectively mitigated the inhibitory effects of neutral to weakly alkaline pH conditions (8.0–10.0) and achieved significant FLT degradation (60.7 %) even at pH 11.0. In soil slurry experiments, the process removed 80 % of FLT within 12 h. The system effectively degraded other polycyclic aromatic hydrocarbons (PAHs), including naphthalene and phenanthrene, demonstrating its broad applicability for remediating PAHs-contaminated environments. This study introduces a novel SPC-dominated AOP strategy, leveraging FeS as a robust catalyst, and offers valuable insights for advancing efficient PAHs remediation technologies.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108331"},"PeriodicalIF":6.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new electrifying strategy to enhance nitrogen removal from ammonium-rich saline wastewater: Performance and mechanisms","authors":"Hong Peng ,&nbsp;Haotian Lei ,&nbsp;Haojie Li,&nbsp;Yuanwei Li,&nbsp;Ganxue Wu,&nbsp;Yingjun Wang,&nbsp;Ying Zhu,&nbsp;Zhenxing Zeng,&nbsp;Hong Xiao","doi":"10.1016/j.jwpe.2025.108319","DOIUrl":"10.1016/j.jwpe.2025.108319","url":null,"abstract":"<div><div>This study explores a novel direct electrical stimulation (ES) system for treating ammonium-rich saline wastewater, using graphite felts as biofilm carriers and conductive materials without separate cathodes and anodes. The concentrations of chemical oxygen demand (COD) and NH₄⁺-N in the synthetic wastewater were 500 mg/L and 100 mg/L, respectively, with salinity levels ranging from 0.8 % to 1.2 %. Three types of reactors were established under microaerobic conditions: a bio-electrochemical reactor (BER), a biotic control reactor (BC), and an electrochemical control reactor (EC). The BER, charged at 0.9 V, achieved 91.0 ± 2.6 % total nitrogen (TN) removal efficiency at 1.2 % salinity, significantly higher than the BC (79.0 ± 5.5 %), while the EC showed no TN removal. Mechanistically, the ES enhanced microbial salt tolerance, biofilm robustness, and microbial metabolic activity by promoting salt-in strategy, extracellular polymeric substance secretion, and electron transfer. Metagenomic analysis revealed that marine anammox bacteria <em>Candidatus SCAELEC01</em> and <em>Candidatus Scalindua</em> were enriched in the BER, with relative abundances 2.39 and 2.38 times higher than in the BC, respectively. Functional gene analysis indicated that ES increased the relative abundances of genes <em>narG</em> and <em>narH</em>, enhancing partial denitrification. ES also boosted the relative abundances of genes <em>hzsA</em>, <em>hzsB</em>, <em>hzsC</em>, <em>hdh</em>, and <em>hzo</em>, promoting the anammox process. Meanwhile, genes <em>nirK</em>, <em>norB</em>, and <em>norC</em> decreased. Collectively, these changes may explain the 46.80 % reduction in N₂O emissions. These results highlight direct ES as a promising strategy for treating ammonium-rich saline wastewaters.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108319"},"PeriodicalIF":6.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sulfhydryl-functionalized covalent organic frameworks microspheres supported Au nanoparticles for continuous flow-through catalysis","authors":"Yaochen Zheng ,&nbsp;Yuancheng Zhu ,&nbsp;Fengyan Xiao ,&nbsp;Fushuai Wang ,&nbsp;Ning Wang","doi":"10.1016/j.jwpe.2025.108357","DOIUrl":"10.1016/j.jwpe.2025.108357","url":null,"abstract":"<div><div>The pore walls functionalization of covalent organic frameworks (COFs) allows for the immobilization of noble metal nanoparticles on the COFs surface, providing the opportunity for continuous catalysis. However, most COFs are amorphous due to their uncontrollable polymerization kinetics, which limits their suitability for continuous flow-through catalytic processes. In this work, spherical COFs microspheres were synthesized at room temperature and further pore walls modified by 1, 2-benzenedithiol (SCOFs-SH) to immobilize Au nanoparticles (Au NPs) for continuous flow-through catalysis. The optimized flux of the catalytic system was up to 3000 L· m⁻² ·h⁻¹ with a 4-nitrophenol reduction efficiency of 99 %. More importantly, the SCOFs-SH@Au NPs were proven to show good stability for 24 h flow-through testing and long-term stability for 15 days soaking in water. The reason for the fast catalysis could be ascribed to the design of SCOFs-SH@Au NPs to fast adsorption of 4-nitrophenol and the desorption of the product 4-aminophenol nearby the active sites. Our strategy, which leverages morphology and functional design to enhance catalytic efficiency, offers a promising approach for fabricating efficient heterogeneous catalysts for industrial applications.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108357"},"PeriodicalIF":6.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of interpretable machine learning models and mechanistic model for predicting effluent nitrogen in WWTP","authors":"Yue Wang ,&nbsp;Tan Li ,&nbsp;Langming Bai ,&nbsp;Huarong Yu ,&nbsp;Fangshu Qu","doi":"10.1016/j.jwpe.2025.108344","DOIUrl":"10.1016/j.jwpe.2025.108344","url":null,"abstract":"<div><div>Accurate prediction of effluent nitrogen is crucial for optimizing operations of wastewater treatment plants (WWTPs). This study systematically compared the performance of a mechanistic model, i.e., the Activated Sludge Model (ASM), with six machine learning (ML) models in predicting effluent total nitrogen (TN), by using one year of high-resolution full-scale operational data obtained from a municipal wastewater treatment plant (WWTP). Notably, the integration of Shapley Additive Explanations (SHAP) into the ML models enabled transparent interpretation of model predictions. ASM was dynamically calibrated through sensitivity analysis, which identified key parameters such as μ_AOB and <em>η</em>_OHO,anox related to nitrification and denitrification. Despite capturing TN trends, the ASM model showed limited accuracy (<em>R</em>^<em>2</em> = 0.26 for training and 0.06 for validation). In contrast, ML models, particularly Random Forest, XGBoost, and LightGBM, demonstrated superior predictive performance (highest <em>R</em>^<em>2</em> = 0.79, lowest MRE = 7.5 %). The ML can directly learn complex relationships from a large amount of running data, while ASM relies on simplified mechanism equations and has difficulty reflecting the dynamic changes in actual operation. SHAP analysis further revealed that return sludge rate, MLSS, influent ammonia, and nitrate concentrations were the most influential features determining TN removal. These findings were consistent with the ASM sensitivity analysis, verifying the ML model's capacity to uncover biologically meaningful insights. This study demonstrated that interpretable ML models not only outperformed traditional ASM in prediction accuracy but also provide transparent and actionable explanations, marking a significant advancement in the application of AI for wastewater process modeling.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108344"},"PeriodicalIF":6.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic Ag0 and CuO doped bio-sonocatalyst multi-walled carbon nanotube for synergized degradation of monoethylene glycol from gas refinery effluents","authors":"Saeed Rajabi ,&nbsp;Hassan Hashemi ,&nbsp;Mohammad Reza Samaei ,&nbsp;Alireza Nasiri ,&nbsp;Abooalfazl Azhdarpoor ,&nbsp;Saeed Yousefinejad ,&nbsp;Majid Sartaj ,&nbsp;Siavash Isazadeh","doi":"10.1016/j.jwpe.2025.108330","DOIUrl":"10.1016/j.jwpe.2025.108330","url":null,"abstract":"<div><div>A novel magnetic Ag⁰ and CuO doped bio-sonocatalyst nanotube carbon was synthesized by advanced microwave-assisted co-precipitation and hybrid reduction methods in the presence of methylcellulose, a natural polysaccharide of cellulose derivatives, and then was investigated for its potential application in the sonocatalytic degradation of monoethylene glycol (MEG) from gas refinery wastewater. Structural characterization analyses were employed to confirm the successful synthesis of the bio-nanocomposite by uniform structure. XRD and FTIR analyses revealed a crystalline structure with MC functional groups that promote contaminant interaction. The bio-sonocatalyst exhibited magnetic characterization with a high specific surface area and thermal stability, as determined by further analysis. Optimum MEG degradation up to 82.9 % was achieved using a 0.8 g/L bio-catalyst dosage and a 5 mM persulfate. The process exhibited the highest efficiency in mildly acidic environments and followed <em>pseudo</em>-first-order kinetics (R² &gt; 0.9). Scavenger studies identified sulfate radicals as playing a dominant role in the degradation process. Real wastewater treatment demonstrated the method's applicability, albeit with reduced efficiency (53.4 %). The machine learning indicated that the KNN model had the maximum accuracy (R² = 0.96), making it the optimal prediction model. The bio-catalyst exhibited excellent reusability with minimal metal leaching and maintained its structural integrity over 4 cycles.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108330"},"PeriodicalIF":6.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable kaolin-crosslinked kappa-carrageenan hydrogel as an efficient adsorbent for cationic dye removal from wastewater","authors":"Fekri Abdulraqeb Ahmed Ali ,&nbsp;Javed Alam ,&nbsp;Ahmed S. Al-Fatesh ,&nbsp;Farid Fadhillah ,&nbsp;Badr M. Thamer ,&nbsp;Muhammad Ali Shar ,&nbsp;Mansour Alhoshan","doi":"10.1016/j.jwpe.2025.108333","DOIUrl":"10.1016/j.jwpe.2025.108333","url":null,"abstract":"<div><div>Dissolution of biopolymers in water is indeed a challenge for water treatment applications. By developing strong 3D gels through ionic crosslinking, biopolymers can be effectively utilized for water treatment applications. In this study, a sustainable and cost-effective kaolin-crosslinked κ-carrageenan (Kln-crosslinked κCg) hydrogel was developed by crosslinking kaolin clay with the κ-carrageenan biopolymer to eliminate cationic dyes, crystal violet (CV) and methylene blue (MB), from wastewater. The developed hydrogels were characterized using XRD, FTIR, SEM, and BET techniques. The effects of dye concentration, adsorbent dosage, pH, and temperature on the adsorption process were assessed. The pseudo-second-order and Elovich models most accurately depicted the adsorption kinetics, implying that chemisorption was the predominant mechanism. The Langmuir isotherm effectively represented the experimental data, indicating monolayer adsorption with saturation capacities of 188.4 ± 5.07 mg/g for CV and 124 ± 2.21 mg/g for MB. Thermodynamic analysis showed an endothermic, spontaneous process, increasing system disorder. Additionally, the hydrogel showed high reusability, ∼70 % removal efficiency after three cycles. A multi-objective genetic algorithm II (MOGA-II) effectively optimized the adsorption parameters. The artificial neural network model, with 10 neurons, yielded good predictive results, aligning closely with experimental data. R² values were 0.9953 for CV and 0.9519 for MB.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108333"},"PeriodicalIF":6.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural sunlight-driven photocatalytic mineralization of petrochemical wastewater using ceramic-supported Fe, B co-doped TiO2/CNT@WO3 in a flat panel photoreactor","authors":"Mehdi Rahbar,&nbsp;Mona Hosseini-Sarvari","doi":"10.1016/j.jwpe.2025.108328","DOIUrl":"10.1016/j.jwpe.2025.108328","url":null,"abstract":"<div><div>This work presents the development of a sunlight-driven photocatalytic system for effective degradation of real petrochemical wastewater containing phthalic anhydride. To this end, a photocatalyst comprising Fe, B co-doped TiO₂ decorated with WO₃ wrapped around carbon nanotube (CNT@WO₃) was synthesized using sol-gel method, and immobilized as a thin film on sintered ceramic substrates. A flat-panel photoreactor was designed to maximize sunlight exposure and enhance photocatalytic activity. Under 40 h of natural sunlight irradiation, the immobilized photocatalyst achieved 53 %, and 41 % removal of chemical oxygen demand (COD) and total organic carbon (TOC), respectively, along with an 88 % reduction in turbidity. The specific activity (11.85 ppm. g⁻¹.h⁻¹) and the energy efficiency (611.62 kWh.m⁻³.order⁻¹) were determined for the conducted photocatalytic degradation. The oxidant-assisted photocatalytic reaction using H₂O₂ and Na₂S₂O₈ led to further improved efficiency. Liquid chromatography-mass spectrometry (LC-MS) analysis validated the extent of photocatalytic degradation of the contaminants. The immobilized photocatalyst exhibited excellent stability over 10 consecutive reaction cycles. Radical scavenging experiments revealed that hydroxyl radicals (^•OH) are dominant species driving the degradation reaction. Formation of the ^•OH radicals was further confirmed using photoluminescence method and coumarin as a probe molecule.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108328"},"PeriodicalIF":6.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}