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

Airlift reactor-based heterogeneous catalytic ozonation using CuO@Leca for biodegradability enhancement of quercetin-rich pharmaceutical effluent

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-14 DOI: 10.1016/j.jwpe.2025.107246

Pegah Amiri , Jamshid Behin

{"title":"Airlift reactor-based heterogeneous catalytic ozonation using CuO@Leca for biodegradability enhancement of quercetin-rich pharmaceutical effluent","authors":"Pegah Amiri , Jamshid Behin","doi":"10.1016/j.jwpe.2025.107246","DOIUrl":"10.1016/j.jwpe.2025.107246","url":null,"abstract":"<div><div>Herbal pharmaceutical effluent (HPE) is distinguished by its high content of natural flavonoids such as Quercetin. Heterogeneous catalytic ozonation (HCO) in an airlift reactor (600 mL) was applied to degrade Quercetin in an aqueous environment using copper oxide-loaded light-expanded clay aggregate (CuO@Leca). Prepared catalyst was characterized by BET, XRD, FTIR, EDS, and SEM analysis, while GC–MS and UV–visible spectroscopy were used to evaluate HPE characterizations. In the first part of experiments, the influence of three main variables, namely CuO loading (0–20 wt%), pH (4–10), and ozonation time (5–35 min) was optimized on Quercetin removal efficiency from synthetic HPE. The results showed a significant increase (2–5 times) in Quercetin degradation using HCO compared to ozonation alone. Meanwhile, an 86.34 % removal was achieved at pH 7.4 and high level of other variables. In the second part of the experiments, real HPE was subjected to HCO under the optimal CuO loading determined in the first part of experiments. Significant reduction was achieved in Quercetin concentration (84 %), TSS (96 %), turbidity (92 %), COD (86 %), and BOD (80 %), alongside an improvement in HPE biodegradability from 0.41 to 0.59. The liquid flow in the riser of airlift reactor promotes the dispersion and direct reactions of ozone, while the catalyst-ozone interactions in the downcomer accelerate ozone decomposition and generation of reactive species, leading to the formation of smaller and more biodegradable compounds such as flavonol, chalcone, flavone, flavanon, flavan-3-ol, oxonium, and phenol. The suggested catalytic reactor is practically interested than slurry configuration. The spent catalyst was regenerated via aerobic calcination at 450 °C for 2 h, showing ∼9 % efficiency loss after four recycling cycles.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107246"},"PeriodicalIF":6.3,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402711","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

Revealing the degradation of atrazine in S-nZVI/peroxydisulfate system with density functional theory calculation

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-13 DOI: 10.1016/j.jwpe.2025.107204

Zhimin Ye , Lin Zhang , Min Zhong , Songlin Wang , Chao Huang , Guangdong Li , Bingjie Li

{"title":"Revealing the degradation of atrazine in S-nZVI/peroxydisulfate system with density functional theory calculation","authors":"Zhimin Ye , Lin Zhang , Min Zhong , Songlin Wang , Chao Huang , Guangdong Li , Bingjie Li","doi":"10.1016/j.jwpe.2025.107204","DOIUrl":"10.1016/j.jwpe.2025.107204","url":null,"abstract":"<div><div>Sulfurization is usually applied for modifying nZVI to enhance the performance and overcome the aggregation, yet the discussions about specific effects seem to be scanty, such as the generation of reaction oxygen species (ROS) and the degradation of organics. Herein, sulfidated nanoscale zero valent iron (S-nZVI) was synthesized and used for the activation of peroxydisulfate (PDS), and the investigations were conducted based on the removal performance of S-nZVI/PDS system for atrazine (ATZ), including the generation of ROS and the characteristics transformation of S-nZVI. The results showed that S would affect the electron transfer process between S-nZVI and PDS as well as the generation pathways of ROS, thus realizing the brilliant degradation of ATZ through the roles of SO<sub>4</sub><img><sup>−</sup>, <img>OH, and Fe(IV). Based on this, density functional theory (DFT) calculation was employed to analyze the reactivity, and then the possible degradation pathways of ATZ were proposed through the combination of DFT and liquid chromatography-mass spectrometry, demonstrating that the reactivity of C<img>Cl bond was important for ATZ degradation. This work provided the new insight into ATZ degradation through the S-nZVI/PDS system.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107204"},"PeriodicalIF":6.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402703","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

Alleviating acid stress in food waste anaerobic digestion by zero-valent iron and magnetite

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-13 DOI: 10.1016/j.jwpe.2025.107185

Tugui Yuan , Wenxiang Zhang , Xuejiao Qiao , Qiyong Xu

{"title":"Alleviating acid stress in food waste anaerobic digestion by zero-valent iron and magnetite","authors":"Tugui Yuan , Wenxiang Zhang , Xuejiao Qiao , Qiyong Xu","doi":"10.1016/j.jwpe.2025.107185","DOIUrl":"10.1016/j.jwpe.2025.107185","url":null,"abstract":"<div><div>This investigation compared the roles of zero-valent iron (ZVI) and magnetite (Fe<sub>3</sub>O<sub>4</sub>) in food waste anaerobic digestion. The results showed that both additives enhanced greatly the CH<sub>4</sub> production rate and CH<sub>4</sub> yield, and ZVI had a better promoting effect. The addition of ZVI or Fe<sub>3</sub>O<sub>4</sub> reduced the lag phase of methanogenesis by 73.51 % and 54.22 %, respectively, and increased the maximum CH<sub>4</sub> production rate and CH<sub>4</sub> yield by 67.43 % and 24.39 %, 37.91 % and 12.86 %, respectively. The ZVI chemical corrosion and Fe<sub>3</sub>O<sub>4</sub> biochemical reduction played a key role in promoting AD performance. The additives promoted the activity of co-enzyme 420, thereby accelerating the CH<sub>4</sub> production. Additionally, the additives facilitate hydrolysis by improving the activities of the protease and α-amylase, thereby increasing the CH<sub>4</sub> yield. Compared with Fe<sub>3</sub>O<sub>4</sub>, ZVI had a better up-regulatory effect on key enzyme activities, resulting in higher CH<sub>4</sub> production rate and CH<sub>4</sub> yield. Fe<sub>3</sub>O<sub>4</sub> favoured the growth of <em>Syntrophomonadaceae</em> and <em>Methanosaeta</em>, whereas ZVI favoured the growth of more syntrophic bacteria (i.e., <em>Syntrophomonadaceae</em>, <em>Syntrophobacter</em>, and <em>Syntrophorhabdus</em>) and <em>Methanosarcina</em>. This study suggests that the ZVI is more attractive for enhancing industrial scale AD processes due to its superior performance, and greater abundance compared to Fe<sub>3</sub>O<sub>4</sub>.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107185"},"PeriodicalIF":6.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402704","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

Phenyl-bridged silica aerogels with enhanced textural and mechanical properties for heavy metal removal

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-13 DOI: 10.1016/j.jwpe.2025.107240

Qi Wang , Akshay A. Ransing , D.B. Mahadik , Puttavva Meti , Haryeong Choi , Taehee Kim , Hyung-Ho Park

{"title":"Phenyl-bridged silica aerogels with enhanced textural and mechanical properties for heavy metal removal","authors":"Qi Wang , Akshay A. Ransing , D.B. Mahadik , Puttavva Meti , Haryeong Choi , Taehee Kim , Hyung-Ho Park","doi":"10.1016/j.jwpe.2025.107240","DOIUrl":"10.1016/j.jwpe.2025.107240","url":null,"abstract":"<div><div>The refluxing method was used to prepare a bridged silicon precursor, in which different numbers of benzene rings (hydroquinone and 4,4′-dihydroxybiphenyl as the organic components) were added as bridges between silica clusters. Using this precursor, phenyl-bridged silica aerogels were synthesized via the sol-gel method, followed by supercritical drying. The phenyl-bridged silica aerogels possessed a homogeneous cage-like network with a high specific surface area (1510 m<sup>2</sup>/g), low bulk density, and high strength (1.79 MPa). Further, the phenyl-bridged silica aerogels were amino functionalized to remove heavy metal ions. The removal efficiencies of these amino-modified aerogels for Pb<sup>2+</sup> via adsorption were found to be high (99.95 %) owing to the high-surface-area nanostructured silica network. The maximum adsorption capacity fitted by the Langmuir adsorption model was 704.225 mg g<sup>−1</sup> and the outstanding selectivity for Pb<sup>2+</sup>. Hence, phenyl-bridged amino-modified silica aerogels have high potential for use in applications such as removing heavy metal ions.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107240"},"PeriodicalIF":6.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402705","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

Spinel ferrites in the photocatalytic and adsorptive remediation of dyes and heavy metals: A review

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-13 DOI: 10.1016/j.jwpe.2025.107259

Alibasha Akbar , M. Bhavani Lakshmi , Tonoy K. Das , Mihir Ghosh

{"title":"Spinel ferrites in the photocatalytic and adsorptive remediation of dyes and heavy metals: A review","authors":"Alibasha Akbar , M. Bhavani Lakshmi , Tonoy K. Das , Mihir Ghosh","doi":"10.1016/j.jwpe.2025.107259","DOIUrl":"10.1016/j.jwpe.2025.107259","url":null,"abstract":"<div><div>This review spotlights the transformative potential of spinel ferrite compositions in revolutionizing wastewater remediation, particularly in eliminating toxic dyes and heavy metals. With their versatile cubic structures and finely tunable compositions, spinel ferrites emerge as powerful catalysts capable of driving efficient photocatalytic and adsorptive processes. Spinel ferrites have demonstrated up to 99.5% degradation efficiency for methylene blue (MB) within 90 min and completely removed other dyes like methyl orange (MO) under optimal conditions. By honing in on the intricate role of metal ion variations within the spinel lattice, this review uncovers how these compositional tweaks dramatically enhance catalytic performance, optimize band gaps, and boost magnetic properties. The discussion emphasizes how compositional variations, such as doping with rare-earth metals, which increased dye degradation efficiency by 97.76 % in cobalt‑zinc ferrites. Beyond their lab-scale potential, we address the critical challenges of scaling these materials for real-world applications, including their reusability, long-term stability, and commercial viability. This comprehensive analysis underscores the promise of spinel ferrites as next-generation materials in the quest for sustainable and effective water purification.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107259"},"PeriodicalIF":6.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402712","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

Application of anthropogenic chemical and biological markers to characterize receiving urban waterways for untreated sanitary waste

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-13 DOI: 10.1016/j.jwpe.2025.107207

Stafford Stewart, Hui Yu, Gangadhar Andaluri, Manisha Choudhary, Achinta Bordoloi, Rominder P.S. Suri

{"title":"Application of anthropogenic chemical and biological markers to characterize receiving urban waterways for untreated sanitary waste","authors":"Stafford Stewart, Hui Yu, Gangadhar Andaluri, Manisha Choudhary, Achinta Bordoloi, Rominder P.S. Suri","doi":"10.1016/j.jwpe.2025.107207","DOIUrl":"10.1016/j.jwpe.2025.107207","url":null,"abstract":"<div><div>Contamination of natural water through point and non-point sources can degrade the quality of urban waterways risking the health of humans and aquatic animals. While the presence of anthropogenic compounds in various natural water bodies has been well studied, there is not much information in the literature on the simultaneous application of chemical and biological markers for identification of diffuse source contamination. In this work, a fingerprint for detecting untreated sewage in urban waterways is developed by associating a suite of 25 reliable chemical markers and 5 source-specific biomarkers. 12 outfall samples, 32 surface water samples, and two groundwater samples were studied. With few exceptions all target chemical markers were detected in study samples. Sucralose and acesulfame were detected in all water matrices including groundwater, and acetaminophen was detected with the highest median concentration. Human-associated biomarkers, <em>Bacteroidales</em> (<em>BacH</em>) and F-RNA-II coliphages correlated well with several labile chemical markers such as Nicotine, Caffeine, Ibuprofen and Naproxen (0.42–0.75, p < 0.05). They were also moderately to strongly associated with conservative chemical markers Acesulfame, Metformin, and Triclocarban (0.46–0.79, p < 0.05). Human mitochondrial DNA MitoH correlated moderately with labile markers nicotine and salicylic acid as well as with conservative markers Metformin and Triclocarban (0.31–0.47, p < 0.05). This study demonstrated that by associating chemical and biological markers, a robust technique was developed for fingerprinting source-specific untreated waste and fecal contamination in natural water resources.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107207"},"PeriodicalIF":6.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402643","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

Membrane contactor performance for the dissolved methane recovery from the liquid effluent of a desulphurisation reactor for biogas purification: Evaluation of operating conditions, fouling and cleaning strategies

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-13 DOI: 10.1016/j.jwpe.2025.107210

R. Jiménez-Robles , M. Izquierdo , V. Martínez-Soria , R. Hervás-Martínez , T. Montoya , F. Sempere

{"title":"Membrane contactor performance for the dissolved methane recovery from the liquid effluent of a desulphurisation reactor for biogas purification: Evaluation of operating conditions, fouling and cleaning strategies","authors":"R. Jiménez-Robles , M. Izquierdo , V. Martínez-Soria , R. Hervás-Martínez , T. Montoya , F. Sempere","doi":"10.1016/j.jwpe.2025.107210","DOIUrl":"10.1016/j.jwpe.2025.107210","url":null,"abstract":"<div><div>Membrane contactors offer a promising feasible alternative to conventional desorption units due to their higher surface-to-volume ratio and operational flexibility. In this regard, a hollow fibre membrane contactor (HFMC) was coupled to a biogas desulphurisation reactor at pilot scale to recover the dissolved CH<sub>4</sub> (D-CH<sub>4</sub>) present in the liquid effluent. To determine the effects of the operational parameters in the separation efficiency, different liquid (Q<sub>L</sub> = 0.7–3 L min<sup>−1</sup>) and sweep gas flow rates (Q<sub>G</sub> = 0.05–1 L min<sup>−1</sup>) were tested using a polypropylene HFMC. The D-CH<sub>4</sub> removal efficiency (RE) was strongly dependent on the Q<sub>L</sub> with a negligible effect of the Q<sub>G</sub>, since the liquid phase boundary layer governed the mass transport. Thus, REs up to 70 % were obtained at Q<sub>L</sub> ≤ 1 L min<sup>−1</sup> feeding the liquid through the shell side. On the contrary, the CH<sub>4</sub> content in the recovered gas was always quite low (<20 %) due to the sweep gas dilution effect and the simultaneous desorption of CO<sub>2</sub>. In log-term operation, a considerable loss of efficiency was observed when fouling appeared, therefore, different physical and chemical cleaning strategies were investigated. The permanent decline in the RE suggested a significant amount of irreversible fouling which hindered the cleaning efficiency, denoting the need of preventive cleanings. The analysis of the fibre surface elucidated an organic dense fouling cake, biofouling from bacteria and algae, and anhydrite scaling (CaSO<sub>4</sub>). Importantly, this study demonstrated that this process is an attractive prospect to avoid diffuse emissions and recover an energy vector.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107210"},"PeriodicalIF":6.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402707","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

(220) facet exposed layered Co3O4: A bifunctional catalyst for electrochemical urea oxidation, and rapid 4-nitrophenol reduction to 4-aminophenol

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-13 DOI: 10.1016/j.jwpe.2025.107217

Mintesinot Dessalegn Dabaro, Meseret Ethiopia Guye, Hern Kim

{"title":"(220) facet exposed layered Co3O4: A bifunctional catalyst for electrochemical urea oxidation, and rapid 4-nitrophenol reduction to 4-aminophenol","authors":"Mintesinot Dessalegn Dabaro, Meseret Ethiopia Guye, Hern Kim","doi":"10.1016/j.jwpe.2025.107217","DOIUrl":"10.1016/j.jwpe.2025.107217","url":null,"abstract":"<div><div>Releasing urea-enriched wastewater from urea industries and 4-nitrophenol (4-NP) threatens human health and aquatic environments. The electrochemical urea oxidation reaction (UOR) offers a dual benefit: reducing wastewater pollution and producing green hydrogen via wastewater splitting. Meanwhile, 4-NP reduction to 4-aminophenol (4-AP) provides an added advantage, as 4-AP is widely used in pharmaceutical and food industries. In this study, layered Co<sub>3</sub>O<sub>4</sub> nanosheets with exposed (220) facets were synthesized via a one-pot hydrothermal post-air-annealing method using cobalt acetate and urea without additives. The air-annealing temperature was critical, with the sample annealed at 500 °C (H<sub>120</sub>-500) exhibiting optimized nanosheets with exposed (220) facets, enhancing diffusion and electron transfer during UOR. H<sub>120</sub>-500 demonstrated superior performance, achieving a high turnover frequency (TOF) of 0.1493 s<sup>−1</sup>, a current density of 250 mA cm<sup>−2</sup>, stability over 72 h, a Tafel slope of 22.4 mV·dec<sup>−1</sup>, and requiring only 1.37 V vs RHE to reach 10 mA cm<sup>−2</sup>, surpassing state-of-the-art cobalt-based UOR electrocatalysts. Additionally, H<sub>120</sub>-500 achieved 99.64 % efficiency in reducing 4-NP to 4-AP within 2 min, with a pseudo-first-order rate constant (k) of 2.63 × 10<sup>−2</sup> s<sup>−1</sup> and durability over seven cycles. This approach offers a sustainable pathway for environmental remediation and green hydrogen production.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107217"},"PeriodicalIF":6.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395250","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

Simultaneous nitrogen and phosphorus removal from anaerobic digested wastewater with struvite recovery using magnesium-air fuel cell

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-13 DOI: 10.1016/j.jwpe.2025.107209

Yuchen Du, Xingze Li, Lingling Lai, Ru Wang

{"title":"Simultaneous nitrogen and phosphorus removal from anaerobic digested wastewater with struvite recovery using magnesium-air fuel cell","authors":"Yuchen Du, Xingze Li, Lingling Lai, Ru Wang","doi":"10.1016/j.jwpe.2025.107209","DOIUrl":"10.1016/j.jwpe.2025.107209","url":null,"abstract":"<div><div>In this study, a magnesium-air fuel cell (Mg-O₂-FC) was adopted to treat anaerobic digested wastewater, and long-term operation was conducted to evaluate its applicability in terms of ammonium and phosphorus removal efficiencies. The results showed that the phosphorus and ammonium removal efficiencies were 96.76 % and 48.08 %, respectively, when the Mg-O₂-FC was operated in sequential batch mode for six cycles. Meanwhile, a two-stage approach named MaFuce-T further enhanced the ammonium and phosphorus removal efficiencies of the Mg-O₂-FC and maximized the utilization of magnesium resource, achieving optimal recovery of ammonium and phosphorus resources in the form of struvite (MgNH₄PO₄·6H₂O). Under this approach, the volumetric removal rates of 3.26 kg/(m<sup>3</sup>·d) for phosphate and 8.79 kg/(m<sup>3</sup>·d) for ammonium, with magnesium ion utilization efficiency of 64.04 %. Under the maximum lifespan of the magnesium plate (24 h), this MaFuce-T approach increased the amount of phosphate removed by approximately 3.47 times, while ammonium removal by roughly 1.02 times. By SEM-EDS, FTIR, and XRD qualitative analysis, the product was determined as struvite with a purity of 86.81 %. Furthermore, the maximum output voltage generated by the fuel cell was recorded at 0.42 V, with a power output of 10.50 mW·h. This approach demonstrated significant economic potential and contributes to the sustainable development of anaerobic digested wastewater treatment systems.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107209"},"PeriodicalIF":6.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395251","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

Preparation of ZnO/PDA-PEI/PVDF antibacterial hydrophilic membranes for highly efficient oil/water emulsion separation

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-02-13 DOI: 10.1016/j.jwpe.2025.107250

Chen Zhao , Yiheng Wang , Nianping Wang , Ruilin Chen , Rui Yin , Xiangxi Li

{"title":"Preparation of ZnO/PDA-PEI/PVDF antibacterial hydrophilic membranes for highly efficient oil/water emulsion separation","authors":"Chen Zhao , Yiheng Wang , Nianping Wang , Ruilin Chen , Rui Yin , Xiangxi Li","doi":"10.1016/j.jwpe.2025.107250","DOIUrl":"10.1016/j.jwpe.2025.107250","url":null,"abstract":"<div><div>The in-situ growth of ZnO is often used to modify membrane surface for enhanced hydrophilic and antibacterial properties due to significant modification effect, simple process and low cost. Nonetheless, some polymer membranes (such as PVDF membrane) lack active sites for ZnO growth on their surfaces, resulting in a small number of particles and unstable binding. This study utilized PDA/PEI to modify PVDF membranes for adequate active sites to capture Zn<sup>2+</sup> ions via the chelation action. Thereafter, nano ZnO can be synthesized easily via the alkalization reaction and thermal breakdown of Zn<sup>2+</sup>. Upon improving the modification conditions, ZnO particles were evenly distributed on the PVDF membrane's surface, leading to a reduction in membrane pore size from 0.38 nm to 0.29 nm. The water contact angle of the ZnO/PDA-PEI modified membrane dropped from 130° to 19°, indicating a significant enhancement in hydrophilicity. The modified membrane demonstrated enhanced anti-fouling performance in the oil/water separation experiment, achieving a steady permeance of 298 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup>, which was sixfold that of the original membrane. In the antibacterial experiment, the modified membrane exhibited significant antibacterial efficacy against both <em>E. coli</em> and <em>S. aureus</em>.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107250"},"PeriodicalIF":6.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402708","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