Journal of water process engineering最新文献_第2页

Engineering a carbon xerogel/ZnO/Cu2-xS photocatalyst for efficient solar and visible-driven degradation of salicylic acid 设计一种碳干凝胶/ZnO/Cu2-xS光催化剂，用于高效的太阳能和可见光驱动降解水杨酸

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-30 DOI: 10.1016/j.jwpe.2025.108437

Ikaro Tessaro , Flávio Henrique Covolam Boldrin , Bruno Henrique Baena da Silva , Camilla Gomes Mascarenhas , Luíza Fonseca Pinheiro , Paula Maria Rafaela Marcelino dos Santos , Gabriel Leda de Arruda , Ana Karine Furtado de Carvalho , Robson da Silva Rocha , Marcos Roberto de Vasconcelos Lanza , Liana Alvares Rodrigues

{"title":"Engineering a carbon xerogel/ZnO/Cu2-xS photocatalyst for efficient solar and visible-driven degradation of salicylic acid","authors":"Ikaro Tessaro , Flávio Henrique Covolam Boldrin , Bruno Henrique Baena da Silva , Camilla Gomes Mascarenhas , Luíza Fonseca Pinheiro , Paula Maria Rafaela Marcelino dos Santos , Gabriel Leda de Arruda , Ana Karine Furtado de Carvalho , Robson da Silva Rocha , Marcos Roberto de Vasconcelos Lanza , Liana Alvares Rodrigues","doi":"10.1016/j.jwpe.2025.108437","DOIUrl":"10.1016/j.jwpe.2025.108437","url":null,"abstract":"<div><div>The contamination of water bodies by emerging pollutants (EP) from various industrial and human activities poses environmental and health risks, prompting the development of effective remediation strategies such as photocatalysis, which has shown promise for degrading these contaminants. This study presents a Cu<sub>2-x</sub>S/ZnO/carbon xerogel composite, designed as an S-scheme heterojunction stabilized by a biomass-derived carbon mediator from black acacia tannin and synthesized through simple methods, to enhance charge separation and solar and visible light utilization for the photocatalytic degradation of salicylic acid. The composite 7.5 % Cu<sub>2-x</sub>S/ZnO/0.25CX 600 °C, demonstrated exceptional performance, achieving complete degradation of SA under solar radiation and 59 % degradation under visible light within 300 min, with significant mineralization (90 % - solar; 62 % - visible). Comprehensive structural and electronic characterizations confirmed the formation of an efficient heterojunction in the most effective material, with carbon xerogel enhancing light absorption and stabilizing the double-type S charge transfer mechanism. The degradation process was primarily driven by the generation of hydroxyl radicals (<img>OH), photogenerated electrons (e<sup>−</sup>), and superoxide anions (O<sub>2</sub><img><sup>−</sup>). Phytotoxicity tests revealed that the solution treated with this optimal material exhibited significantly reduced toxicity, highlighting its potential for real-world environmental applications and sustainability.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108437"},"PeriodicalIF":6.7,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724426","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}

引用次数: 0

Synthesis and characterization of vanadium germanium carbide MAX phase to prepare antibacterial PES ultrafiltration membrane 碳化钒锗MAX相制备抗菌PES超滤膜的合成与表征

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-30 DOI: 10.1016/j.jwpe.2025.108385

Ehsan Ghasali , Aya Alterkaoui , Sadin Özdemir , M. Serkan Yalçın , Volkan Filiz , Nadir Dizge , Alireza Khataee , Yasin Orooji

{"title":"Synthesis and characterization of vanadium germanium carbide MAX phase to prepare antibacterial PES ultrafiltration membrane","authors":"Ehsan Ghasali , Aya Alterkaoui , Sadin Özdemir , M. Serkan Yalçın , Volkan Filiz , Nadir Dizge , Alireza Khataee , Yasin Orooji","doi":"10.1016/j.jwpe.2025.108385","DOIUrl":"10.1016/j.jwpe.2025.108385","url":null,"abstract":"<div><div>This work investigates the permeability and antifouling characteristics of vanadium germanium carbide (V<sub>2</sub>GeC) MAX phase, which is recognized for their nano-layered structure when added to polyether sulfone (PES) membranes to reduce membrane fouling against <em>Escherichia coli</em> (<em>E. coli</em>) and bovine serum albumin (BSA). The structural and morphological characteristics of the composite membranes were described, and their effectiveness in reducing biofouling was assessed. The synthesized MAX phase and composite membranes were structurally characterized. V<sub>2</sub>GeC MAX phase exhibited a significant radical scavenging activity of 93.3 % at a concentration of 200 mg/L. It was determined that it significantly activated α-amylase enzyme activity depending on concentration. The compound caused single-strand DNA cleavage at 100 mg/L and double-strand DNA cleavage at 200 mg/L. V<sub>2</sub>GeC MAX phase provided a remarkable inhibition for six bacterial and two fungal strains. The antibiofilm effect against <em>P. aeruginosa</em> and <em>S. aureus</em> was 86.7 % and 90.6 %, respectively. Also, the compound meaningfully inhibited <em>E. coli</em> cell viability. The antimicrobial efficiencies of V<sub>2</sub>GeC MAX phase-coated PES membranes were also performed. The high surface area and enhanced hydrophilicity of V₂GeC MAX increase water permeability in PES membranes. This improves efficiency in water purification processes like reverse osmosis desalination, enabling higher flow rates at lower operating pressures and thereby reducing energy consumption. In addition, owing to their anti-fouling properties, PES/V₂GeC composite membranes can provide longer-term use, reducing maintenance and cleaning operations.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108385"},"PeriodicalIF":6.7,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750043","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}

引用次数: 0

Mechanistic insights into plasmon-mediated charge transfer in Pt@BiOBr/g-C3N4 S-scheme heterojunction for solar-driven water treatment 太阳能驱动水处理中Pt@BiOBr/g-C3N4 S-scheme异质结等离子体介导的电荷转移机制

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-30 DOI: 10.1016/j.jwpe.2025.108367

Jin Chen , Ke Li , Jie Yan , Suqing Qin , Yuzhao Ma , Xiaofeng Yang , Yanjun Li

{"title":"Mechanistic insights into plasmon-mediated charge transfer in Pt@BiOBr/g-C3N4 S-scheme heterojunction for solar-driven water treatment","authors":"Jin Chen , Ke Li , Jie Yan , Suqing Qin , Yuzhao Ma , Xiaofeng Yang , Yanjun Li","doi":"10.1016/j.jwpe.2025.108367","DOIUrl":"10.1016/j.jwpe.2025.108367","url":null,"abstract":"<div><div>Designing heterojunction photocatalysts with staggered band structures and optimal interfacial interactions constitutes a feasible strategy to achieve superior photocatalytic performance. Herein, we synthesized a Pt@BiOBr/g-C<sub>3</sub>N<sub>4</sub> S-scheme heterojunction via in-situ construction and photochemical deposition. Notably, Platinum nanoparticles (NPs), precisely deposited via photochemical reduction, extend light absorption into the visible-NIR spectrum through localized surface plasmon resonance (SPR) while acting as electron mediators to suppress recombination. Under simulated solar irradiation, the optimized Pt@BiOBr/g-C<sub>3</sub>N<sub>4</sub> S-scheme heterojunction demonstrates complete degradation of tetracycline hydrochloride (TC-HCl) within 10 min. Additionally, the photocatalyst showed exceptional degradation efficiency for organic dyes including methyl orange (MO) and rhodamine B (RhB). More importantly, the synergistic interplay between internal electric field (IEF) and the SPR of Pt nanoparticles collectively facilitates rapid charge separation while suppressing electron-hole recombination. This study offers a path toward highly effective photocatalysts engineered for practical applications and elucidates the activity enhancement mechanism through Pt incorporation in ternary heterojunction systems.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108367"},"PeriodicalIF":6.7,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724450","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}

引用次数: 0

Chemically crosslinked electrospun chitosan/poly (vinyl alcohol) membranes with encapsulated zeolite for organic dye removal 化学交联静电纺壳聚糖/聚乙烯醇膜与包封沸石去除有机染料

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-29 DOI: 10.1016/j.jwpe.2025.108413

Romina Shirazi , Toraj Mohammadi , Ehssan H. Koupaie , Kevin J. De France

{"title":"Chemically crosslinked electrospun chitosan/poly (vinyl alcohol) membranes with encapsulated zeolite for organic dye removal","authors":"Romina Shirazi , Toraj Mohammadi , Ehssan H. Koupaie , Kevin J. De France","doi":"10.1016/j.jwpe.2025.108413","DOIUrl":"10.1016/j.jwpe.2025.108413","url":null,"abstract":"<div><div>Safe water is a basic human right, yet about 25 % of the global population lacks reliable access. Rapid urbanization and industrialization, especially in developing countries, have worsened water pollution, causing environmental and health issues. To achieve global safe water goals, affordable and effective wastewater treatment solutions are needed. To this end, zeolites are highly effective for wastewater treatment due to their unique adsorption properties; however, their efficacy can be significantly hindered due to a propensity to aggregate. Herein, electrospun chitosan (CS)/polyvinyl alcohol (PVA) membranes are fabricated to encapsulate sodium Y (NaY) zeolites, preventing their unwanted aggregation. By utilizing 1,1’-Carbonyldiimidazole (CDI) as a green crosslinker, NaY could be effectively immobilized within the electrospun membranes. CDI crosslinking enhanced the mechanical properties of the composite membranes, with improved Young's Modulus, ultimate tensile stress, and toughness as compared to non-crosslinked membranes. After optimizing the electrospinning process and formulation, as a proof of concept membrane modules were prepared and tested for the filtration of methylene blue (MB) as a model organic dye. Continuous filtration tests showed effective MB removal, achieving a 95 % removal rate and 287 LMH flux at an initial MB concentration of 50 mg/L, using a 1 g/L adsorbent dosage. Crucially, these membranes showed good mechanical stability and potential to be regenerated/recycled, yielding only a 13 % decrease in performance after five adsorption/desorption cycles. We anticipate that this approach could lead to the development of functional membranes for removing organic dyes and other emerging contaminants from water, directly improving access to safe, clean water.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108413"},"PeriodicalIF":6.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144720947","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}

引用次数: 0

Ultra-high sulfate loads and iron precision dosing for hydrogen sulfide management: A mass balance assessment and microbial structure implications in anaerobic bioreactors 硫化氢管理的超高硫酸盐负荷和铁精确剂量：厌氧生物反应器的质量平衡评估和微生物结构影响

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-29 DOI: 10.1016/j.jwpe.2025.108405

Valentina Girardi , María Laura Tondo , Cecilia Lucía Balaban , María Sol Herrero , Camila Olivera , Lucas Matías Salvatierra

{"title":"Ultra-high sulfate loads and iron precision dosing for hydrogen sulfide management: A mass balance assessment and microbial structure implications in anaerobic bioreactors","authors":"Valentina Girardi , María Laura Tondo , Cecilia Lucía Balaban , María Sol Herrero , Camila Olivera , Lucas Matías Salvatierra","doi":"10.1016/j.jwpe.2025.108405","DOIUrl":"10.1016/j.jwpe.2025.108405","url":null,"abstract":"<div><div>This article presents an original and detailed study of semi continuous lab-scale anaerobic bioreactors subjected to Sulfate Loads Rates (SLRs) >130 mgSO<sub>4</sub><sup>2−</sup>/day.L<sub>reactor</sub>. At these sulfate inputs, hydrogen sulfide yield by bacterial conversion can reach concentrations above 400 mg/L in the liquid phase and more than 25,000 ppm in gas phase, respectively. Both values comprise significant technical challenges in biogas plants as well as health and environmental concerns.</div><div>In order to control sulfide in liquid phase, two bioreactors were treated with opposite ferric dosing strategies: one underwent five consecutive cycles of shock precipitation of hydrogen sulfide, reducing peak levels from ∼400 mg/L to <40 mg/L; the other involved the application of a more continuous and fine-tuned dosing strategy to manage sulfide concentrations across different stepwise levels: 400–300, 300–200, 200–100, and 100 to <10 mg/L. A third bioreactor, without iron addition, stabilized at ∼250 mg/L H<sub>2</sub>S and 10,000 ppm in biogas over 140 days. A detailed sulfur mass balance enabled analysis of sulfate-to-sulfide conversion rates, Henry's constants between liquid and gas phases, and Fe<sup>3+</sup>/S<sup>2−</sup> molar ratios for both strategies. Values of 0.99 and 0.65 were obtained, matching with the stoichiometry of FeS during shock precipitation and FeS + S<sup>0</sup> and/or Fe<sub>2</sub>S<sub>3</sub> in stepwise precipitation, respectively. High-throughput sequencing of the 16S rRNA gene revealed subtle yet significant changes in the microbial community structures within bioreactors subjected to high sulfate loads and iron addition. Furthermore, the authors characterized the late-stage microbial response following methanogenic process inhibition and the cessation of biogas production.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108405"},"PeriodicalIF":6.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724431","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}

引用次数: 0

Bio-inspired graphene oxide sponges for enhanced adsorption of legacy and emerging contaminants from water 仿生氧化石墨烯海绵，用于增强对水中遗留和新出现污染物的吸附

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-29 DOI: 10.1016/j.jwpe.2025.108329

Hadi Rezvani, Julia Costantino, Mihir Kapadia, Yalda Majooni, Samson O. Abioye, Mahsa Moayedi, Nariman Yousefi

{"title":"Bio-inspired graphene oxide sponges for enhanced adsorption of legacy and emerging contaminants from water","authors":"Hadi Rezvani, Julia Costantino, Mihir Kapadia, Yalda Majooni, Samson O. Abioye, Mahsa Moayedi, Nariman Yousefi","doi":"10.1016/j.jwpe.2025.108329","DOIUrl":"10.1016/j.jwpe.2025.108329","url":null,"abstract":"<div><div>This study investigates the adsorption performance of bioinspired, amino acid-modified reduced graphene oxide (rGO) sponges to remove model legacy and emerging contaminants from water. Modified sponges containing L-tryptophan (GOTR) and L-phenylalanine (GOPA) were synthesized and characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-Ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and surface area analysis to confirm structural modifications and functional group incorporation. Adsorption experiments were conducted using methylene blue (MB), rhodamine B (RhB), acetaminophen (AC), and diclofenac (DCF) as model legacy and emerging contaminants of concern. The optimized sponges, GOTR<sub>15–20%</sub> and GOPA<sub>1.5–2.5%</sub>, demonstrated maximum adsorption capacities of 1003 mg/g for DCF, 653 mg/g for MB, 556 mg/g for AC, and 556 mg/g for RhB, as described by the Langmuir isotherm model. The incorporation of amino acids enhanced the surface area and the availability of active functional groups, increasing adsorption efficiency by up to 2-fold compared to unmodified rGO sponges. These findings suggest that amino acid-modified rGO sponges offer an effective, versatile, and green solution for removing diverse legacy and emerging contaminants from water.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108329"},"PeriodicalIF":6.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144720992","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}

引用次数: 0

Efficient dye degradation via fenton-like catalysis using GO/MX-Fe2+ composites: Synthesis, performance, and mechanism GO/MX-Fe2+复合材料在fenton-like催化下高效降解染料：合成、性能和机理

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-29 DOI: 10.1016/j.jwpe.2025.108422

Wenshuai Jiang , Jin Yang , Yaning Wang , Yiyang Gao , Wu Ren , Yi Yu , Qingjun Liu

{"title":"Efficient dye degradation via fenton-like catalysis using GO/MX-Fe2+ composites: Synthesis, performance, and mechanism","authors":"Wenshuai Jiang , Jin Yang , Yaning Wang , Yiyang Gao , Wu Ren , Yi Yu , Qingjun Liu","doi":"10.1016/j.jwpe.2025.108422","DOIUrl":"10.1016/j.jwpe.2025.108422","url":null,"abstract":"<div><div>An efficient and sustainable dye wastewater degradation system is designed by using Fe<sup>2+</sup>-modified graphene oxide/MXenes (GO/MX-Fe<sup>2+</sup>) composites. Experimental results demonstrated that the GO/MX-Fe<sup>2+</sup> composites acted as an efficient catalyst for Fenton-like reaction; moreover, they functioned as an adsorbent to remove dyes and heavy metal ions from wastewater, enhancing the degradation rate and overall purification performance. Furthermore, the study partially confirmed that the ferrous ions involved in the reaction originate from the cross-linking process during hydrothermal synthesis, rather than adsorption. By controlling the dosage of Fe<sup>2+</sup>, efficient degradation can be achieved while inhibiting the formation of iron sludge. Notably, the system generated a small amount of non-iron byproducts during methylene blue (MB) treatment and almost none in the degradation of other dyes, reflecting its wide applicability. The reaction pH adaptability broadened from acidic to mildly alkaline conditions. The rate of MB within 1 h reached more than 95 %, and the GO/MX-Fe<sup>2+</sup> composites exhibited good recyclability. This study demonstrated that due to their straightforward preparation, superior performance and minimal secondary pollution, the GO/MX-Fe<sup>2+</sup> composites are an example of an efficient and sustainable approach for the design of composite materials for dye degradation and environmental remediation.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108422"},"PeriodicalIF":6.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724428","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}

引用次数: 0

Calcium hypochlorite‑potassium ferrate synergy: A novel strategy for stabilizing Fe(VI) while enhancing coagulation for emerging contaminants removal in source water 次氯酸钙-高铁酸钾协同作用：一种稳定铁（VI）的新策略，同时增强源水中新兴污染物去除的混凝

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-29 DOI: 10.1016/j.jwpe.2025.108427

Yang Song , Shibin Zhang , Haoxin Shen , Wen Qin , Jin Jiang , Jun Ma

{"title":"Calcium hypochlorite‑potassium ferrate synergy: A novel strategy for stabilizing Fe(VI) while enhancing coagulation for emerging contaminants removal in source water","authors":"Yang Song , Shibin Zhang , Haoxin Shen , Wen Qin , Jin Jiang , Jun Ma","doi":"10.1016/j.jwpe.2025.108427","DOIUrl":"10.1016/j.jwpe.2025.108427","url":null,"abstract":"<div><div>In this study, calcium hypochlorite (Ca(ClO)<sub>2</sub>) combined with potassium ferrate (Fe(VI)) (Ca(ClO)<sub>2</sub>/Fe(VI)) oxidation system was developed to enhance the stability of Fe(VI) and removal efficacy of emerging contaminants. For the removal of micropollutants with various moieties, carbamazepine (CBZ) and phenol removals (50 % and 35 %) in the initial stage were enhanced by Ca(ClO)<sub>2</sub>/Fe(VI) oxidation system, which were primarily attributed to the Ca(ClO)<sub>2</sub> enhanced micropollutant removal by stabilizing Fe(VI) through H<sub>2</sub>O<sub>2</sub> scavenging in the Ca(ClO)<sub>2</sub>/Fe(VI) system, increasing Fe(VI) exposure to boost direct degradation efficiency for Fe(VI)-reactive contaminants (CBZ or phenol), but showed limited efficacy for ClO<sup>−</sup> reactive pollutants (SMX), because the reaction of Ca(ClO)<sub>2</sub> with SMX was more favorable than that of Fe(VI) with SMX. The microplastics (MPs) removal achieved by the Ca(ClO)<sub>2</sub>/Fe(VI) oxidation system (86 %) was also higher than the sum values (65.69 %) achieved by each individual reactant, indicating the synergy of Ca(ClO)<sub>2</sub> and Fe(VI) could enhance coagulation and improve the removal efficiency of microplastics. Moreover, the UV<sub>254</sub>, electron-donating capacity (EDC), and turbidity removals by Ca(ClO)<sub>2</sub>/Fe(VI) oxidation system from simulated source water (36 %, 53 % and 32 %) and real source water (48 %, 86 % and 53 %) were higher than those by Fe(VI) alone (26 %, 43 % and 21 %). This study provided novel insights into optimizing Fe(VI)-based systems applied for pre-oxidation process in drinking water treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108427"},"PeriodicalIF":6.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721046","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}

引用次数: 0

Enhanced electrochemical sensing of nitrite ions in water samples using hydroxyapatite-zinc oxide nanocomposite modified carbon paste electrode 羟基磷灰石-氧化锌纳米复合修饰碳糊电极增强水样中亚硝酸盐离子的电化学传感

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-29 DOI: 10.1016/j.jwpe.2025.108418

Ersan Turunc , Ayse Goren , Riza Binzet

{"title":"Enhanced electrochemical sensing of nitrite ions in water samples using hydroxyapatite-zinc oxide nanocomposite modified carbon paste electrode","authors":"Ersan Turunc , Ayse Goren , Riza Binzet","doi":"10.1016/j.jwpe.2025.108418","DOIUrl":"10.1016/j.jwpe.2025.108418","url":null,"abstract":"<div><div>This study reports the green synthesis of a hydroxyapatite‑zinc oxide (HAp-ZnO) nanocomposite using <em>Onosma mersinana</em> leaf extract (OMLE) and its application as a highly sensitive electrochemical sensor for nitrite ion detection. The structural and surface characteristics of the synthesized nanomaterial were confirmed by XRD, which revealed crystalline phases corresponding to both HAp and ZnO; SEM analysis showed uniform morphology; EDX confirmed elemental composition; and XPS identified chemical states of Zn, O, Ca, C, and P, verifying successful ZnO doping. The HAp-ZnO nanocomposite was incorporated into a carbon paste electrode (CPE) to fabricate the CPE@HAp-ZnO100 sensor for the electrochemical detection of nitrite. The electrochemical behavior of nitrite on the CPE@HAp-ZnO100 electrode was investigated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), and differential pulse voltammetry (DPV) techniques. This electrode exhibited a low detection limit (LOD) of 0.12 μM in the 5–1000 μM range, determined by the equation LOD = 3.3σ/S. The electrochemical response was influenced by key parameters including electrode composition (optimal at 10 % modifier), pH (optimal at pH 7.0), and scan rate, which followed diffusion-controlled kinetics. The oxidation process of nitrite was found to proceed via a two-electron, one-proton mechanism. Selectivity tests demonstrated minimal interference from common ions, while real sample analyses in tap and stream water yielded recovery rates between 99.6 % and 104.1 %, with relative standard deviations (RSD) ranging from 1.6 % to 3.1 %. These results demonstrate the sensor's robustness, environmental compatibility, and applicability for real-world nitrite monitoring.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108418"},"PeriodicalIF":6.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721047","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}

引用次数: 0

Dynamics of microbial communities and functional genes under the interactions between phosphorus inactivation agents and phosphorus-solubilizing bacteria in sediments 磷灭活剂与溶磷菌相互作用下沉积物微生物群落及功能基因动态

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-07-29 DOI: 10.1016/j.jwpe.2025.108395

Song Cui , Zirui Wang , Lingchao Kong , Miao Zhang , Hao Xu , Peng Xiao , Yu Tao

{"title":"Dynamics of microbial communities and functional genes under the interactions between phosphorus inactivation agents and phosphorus-solubilizing bacteria in sediments","authors":"Song Cui , Zirui Wang , Lingchao Kong , Miao Zhang , Hao Xu , Peng Xiao , Yu Tao","doi":"10.1016/j.jwpe.2025.108395","DOIUrl":"10.1016/j.jwpe.2025.108395","url":null,"abstract":"<div><div>The interactions between phosphorus inactivation agents (PIAs) and phosphate-solubilizing bacteria (PSB) profoundly influence the transformation and migration of phosphorus at the sediment–water interface. However, the effects of PIA application on the community structure of PSB and the associated phosphorus-related functional genes in sediments remain poorly understood. Here, we demonstrate that PIA alone increases PSB community complexity, but combined with PSB, it simplifies structures via competitive pressure while suppressing organophosphorus ester hydrolysis genes (e.g., <em>phoN</em>, <em>phnX</em>) and activating oxidative phosphorylation pathways. According to the metagenomic study, <em>Bacteroidota</em> triggered phosphonate metabolism (e.g., C-P lyase) during PIA treatment, whereas <em>Pseudomonadota</em> dominated natural sediments (∼80 % relative abundance) and used oxidative phosphorylation to liberate phosphorus. Contrary to previous assumptions of sustained PIA efficacy, our long-term experiments revealed a resurgence of <em>Pseudomonadota,</em> indicating microbial adaptability counteracts initial remediation effects. High-dose PSB enhanced phosphate transporter gene expression (<em>pstBC</em>, <em>ugpC</em>) yet synergized with PIA to stabilize residual phosphorus forms. These findings redefine the temporal limitations of PIA and highlight microbial feedback as a key driver of phosphorus re-release. By integrating metagenomics and phosphorus speciation, this study bridges microbial adaptability with PIA-based sediment remediation, offering insights into microbes and dosage balance determining long-term success in eutrophication control.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108395"},"PeriodicalIF":6.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721048","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}

引用次数: 0