Journal of water process engineering最新文献_第4页

Evaluation of resource-based rural sewage treatment system driven by clean energy in Northwest China

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2025.106932

Zilan Liao , Shangbin Ma , Pengyu Li , Yuxin Wang , Yixiao Li , Minghuan Lv , Tianlong Zheng , Jianguo Liu , Lin Li , Junxin Liu

Rural areas in Northwest China are sparsely populated. Traditional centralized domestic sewage treatment facilities have large-scale investments, high operating costs, and complicated operation and maintenance management, challenging their application in these areas. Given the abundant clean energy and limited agricultural irrigation water in Northwest China, this study constructs a solar-wind driven rural domestic sewage treatment system with a treatment scale of 1.5 m³/d and HRT of 14 h. Effluent quality was suitable for farmland irrigation. The efficiency of complementary solar-wind power generation and the system operating performance and potential application value were assessed. The effluent COD_Cr meets the Class A vegetable irrigation standards (average removal rate is 70 %) in the “Standard for Irrigation Water Quality” (GB5084–2021). The average retention efficiencies of NH₄⁺-N and SRP are 100.23 % and 104.3 %, respectively. Using the emission factor method, indirect and direct carbon emissions and the carbon reduction potential were evaluated. The carbon reduction rate during the life cycle is 53.15 %. Finally, a life-cycle cost evaluation model quantified a 25-year life cycle cost-effectiveness. The application potential was confirmed based on investment costs. This study demonstrates this novel treatment system feasibility in terms of operational performance, carbon emissions, and cost-effectiveness and provides a scientific basis for low-carbon and sustainable resource recycling to rural sewage treatment systems.

{"title":"Evaluation of resource-based rural sewage treatment system driven by clean energy in Northwest China","authors":"Zilan Liao , Shangbin Ma , Pengyu Li , Yuxin Wang , Yixiao Li , Minghuan Lv , Tianlong Zheng , Jianguo Liu , Lin Li , Junxin Liu","doi":"10.1016/j.jwpe.2025.106932","DOIUrl":"10.1016/j.jwpe.2025.106932","url":null,"abstract":"<div><div>Rural areas in Northwest China are sparsely populated. Traditional centralized domestic sewage treatment facilities have large-scale investments, high operating costs, and complicated operation and maintenance management, challenging their application in these areas. Given the abundant clean energy and limited agricultural irrigation water in Northwest China, this study constructs a solar-wind driven rural domestic sewage treatment system with a treatment scale of 1.5 m<sup>3</sup>/d and HRT of 14 h. Effluent quality was suitable for farmland irrigation. The efficiency of complementary solar-wind power generation and the system operating performance and potential application value were assessed. The effluent COD<sub>Cr</sub> meets the Class A vegetable irrigation standards (average removal rate is 70 %) in the “Standard for Irrigation Water Quality” (GB5084–2021). The average retention efficiencies of NH<sub>4</sub><sup>+</sup>-N and SRP are 100.23 % and 104.3 %, respectively. Using the emission factor method, indirect and direct carbon emissions and the carbon reduction potential were evaluated. The carbon reduction rate during the life cycle is 53.15 %. Finally, a life-cycle cost evaluation model quantified a 25-year life cycle cost-effectiveness. The application potential was confirmed based on investment costs. This study demonstrates this novel treatment system feasibility in terms of operational performance, carbon emissions, and cost-effectiveness and provides a scientific basis for low-carbon and sustainable resource recycling to rural sewage treatment systems.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 106932"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097510","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

Effects of plant species on reverse osmosis concentrate treatment in constructed wetlands: Performance, plant growth, and microbial community structure

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2025.106965

Jie Wang , Tengfei Hu , Xiaohan Wei , Bin Xu , Xiaoyu Liu , Xiaoliang Zhai , Lin Chen , Wenxian Wang , Wenming Song , Shu Chen , Lihua Cheng , Xiaolin Zhou

The efficient treatment of reverse osmosis concentrate (ROC) is crucial for the widespread application of reverse osmosis technology. This study investigated the ROC removal performance of constructed wetlands (CWs) planted with five different plant species. The results showed that plants can improve the efficiency of pollutant removal in CWs. Among the species tested, I. wilsonii showed superior pollutant removal performance, achieving average removal rates of 91.66 % for nitrate, 87.95 % for total nitrogen (TN), 72.40 % for total phosphorus, and 52.30 % for dissolved organic carbon (DOC). After 30 days of CWs operation, the biomass growth, nitrogen uptake, and phosphorus uptake of I. wilsonii were 2.42 g, 27.76 mg, and 14.23 mg per plant, respectively. However, those of the other species ranged from 0.32 to 0.78 g, 3.46–17.23 mg, and 1.05–5.55 mg per plant, respectively. The predominant functional microbial phylum in all CW substrate samples was Proteobacteria, accounting for 42.56 % to 64.44 % of the total microbial community. At the genus level, the dominant genera in unplanted CWs were two heterotrophic denitrifiers: Pseudomonas and Thauera, representing 12.88 % and 8.57 % of the total microbial community, respectively. In I. wilsonii CW, the dominant genera shifted to two autotrophic denitrifiers: Thiobacillus and Sulfurimonas, representing 17.45 % and 7.74 % of the total microbial community, respectively. Redundancy analysis indicated that plant biomass exhibited a positive correlation with pollutant removal, and the abundance of Thiobacillus and Sulfurimonas had a significant positive correlation with DOC and TN removal.

{"title":"Effects of plant species on reverse osmosis concentrate treatment in constructed wetlands: Performance, plant growth, and microbial community structure","authors":"Jie Wang , Tengfei Hu , Xiaohan Wei , Bin Xu , Xiaoyu Liu , Xiaoliang Zhai , Lin Chen , Wenxian Wang , Wenming Song , Shu Chen , Lihua Cheng , Xiaolin Zhou","doi":"10.1016/j.jwpe.2025.106965","DOIUrl":"10.1016/j.jwpe.2025.106965","url":null,"abstract":"<div><div>The efficient treatment of reverse osmosis concentrate (ROC) is crucial for the widespread application of reverse osmosis technology. This study investigated the ROC removal performance of constructed wetlands (CWs) planted with five different plant species. The results showed that plants can improve the efficiency of pollutant removal in CWs. Among the species tested, <em>I. wilsonii</em> showed superior pollutant removal performance, achieving average removal rates of 91.66 % for nitrate, 87.95 % for total nitrogen (TN), 72.40 % for total phosphorus, and 52.30 % for dissolved organic carbon (DOC). After 30 days of CWs operation, the biomass growth, nitrogen uptake, and phosphorus uptake of <em>I. wilsonii</em> were 2.42 g, 27.76 mg, and 14.23 mg per plant, respectively<em>.</em> However, those of the other species ranged from 0.32 to 0.78 g, 3.46–17.23 mg, and 1.05–5.55 mg per plant, respectively. The predominant functional microbial phylum in all CW substrate samples was Proteobacteria, accounting for 42.56 % to 64.44 % of the total microbial community. At the genus level, the dominant genera in unplanted CWs were two heterotrophic denitrifiers: <em>Pseudomonas</em> and <em>Thauera</em>, representing 12.88 % and 8.57 % of the total microbial community, respectively. In <em>I. wilsonii</em> CW, the dominant genera shifted to two autotrophic denitrifiers: <em>Thiobacillus</em> and <em>Sulfurimonas</em>, representing 17.45 % and 7.74 % of the total microbial community, respectively. Redundancy analysis indicated that plant biomass exhibited a positive correlation with pollutant removal, and the abundance of <em>Thiobacillus</em> and <em>Sulfurimonas</em> had a significant positive correlation with DOC and TN removal.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 106965"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097518","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

Multifunctional bilayer electrocatalytic membrane with high permeability and antifouling property for efficient removal of dye from water

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2024.106886

Yuan Zhu, Gege Zhao, Tianqi Du, Miao Zhang, Chengcheng Li, Xing Su, Yating Ji, Zaisheng Cai, Yaping Zhao

To solve the problem of flux reduction and membrane damage due to membrane contamination and pressure-driven during membrane separation, a new strategy was proposed for the preparation of multifunctional bilayer membrane doped with iron phthalocyanine (FePc) in PVDF matrix. The membrane consisted of an upper PVDF@P-C-FePc conductive polymer layer and a lower hydrophilic cotton fiber (CF) substrate. The CNTs-loaded FePc enhanced the porosity, hydrophilicity and permeability of the polymer layer, and the ·OH generated during the electrocatalytic process endowed the membrane with good self-cleaning properties. The formation of a wettability gradient between the CF and the PVDF@P-C-FePc benefits further water flux enhancement, while the excellent mechanical properties of cotton fiber greatly improve the mechanical strength and reduce membrane damage. With pressure-driven of 0.1 MPa and electrocatalytic conditions of 6 V, the prepared PVDF@P-C-FePc/CF exhibited excellent water flux (493 L

∙

m^-2

∙

h⁻¹) and a removal efficiency of up to 95 % for 15 mg/L of MB. Because of the good self-cleaning performance, the dye pollutions on the surface were extremely easy to clean, and the flux recovery was close to 100 %, showing good antifouling performance. This proves that the prepared PVDF@P-C-FePc/CF composite membrane possesses the combined advantages of high flux, separation efficiency and antifouling performance at the same time, and shows a broad application prospect in water treatment applications.

{"title":"Multifunctional bilayer electrocatalytic membrane with high permeability and antifouling property for efficient removal of dye from water","authors":"Yuan Zhu, Gege Zhao, Tianqi Du, Miao Zhang, Chengcheng Li, Xing Su, Yating Ji, Zaisheng Cai, Yaping Zhao","doi":"10.1016/j.jwpe.2024.106886","DOIUrl":"10.1016/j.jwpe.2024.106886","url":null,"abstract":"<div><div>To solve the problem of flux reduction and membrane damage due to membrane contamination and pressure-driven during membrane separation, a new strategy was proposed for the preparation of multifunctional bilayer membrane doped with iron phthalocyanine (FePc) in PVDF matrix. The membrane consisted of an upper PVDF@P-C-FePc conductive polymer layer and a lower hydrophilic cotton fiber (CF) substrate. The CNTs-loaded FePc enhanced the porosity, hydrophilicity and permeability of the polymer layer, and the ·OH generated during the electrocatalytic process endowed the membrane with good self-cleaning properties. The formation of a wettability gradient between the CF and the PVDF@P-C-FePc benefits further water flux enhancement, while the excellent mechanical properties of cotton fiber greatly improve the mechanical strength and reduce membrane damage. With pressure-driven of 0.1 MPa and electrocatalytic conditions of 6 V, the prepared PVDF@P-C-FePc/CF exhibited excellent water flux (493 L<span><math><mo>∙</mo></math></span>m<sup>-2</sup><span><math><mo>∙</mo></math></span>h<sup>−1</sup>) and a removal efficiency of up to 95 % for 15 mg/L of MB. Because of the good self-cleaning performance, the dye pollutions on the surface were extremely easy to clean, and the flux recovery was close to 100 %, showing good antifouling performance. This proves that the prepared PVDF@P-C-FePc/CF composite membrane possesses the combined advantages of high flux, separation efficiency and antifouling performance at the same time, and shows a broad application prospect in water treatment applications.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 106886"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097888","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-fabrication of multifunctional CuO-ZnO nanocomposites for improved biomedical and industrial wastewater purification by experimental and molecular docking computational investigation

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2025.106933

M. Dhanalakshmi, Venkatramana Losetty

The current research focused on the fabrication of copper oxide‑zinc oxide nanocomposites (CuO-ZnO NCs) using Ceropegia debilis plant extract. The green fabricated material was characterized to analyse its structural, optical, and morphological properties. The NCs showed maximum absorbance at 372 nm with an energy gap of 2.95 eV. XRD and XPS analysis confirms the existence of Cu and Zn in the fabricated CuO-ZnO NCs. The peak indexed at 36.2^⸰ revealed the crystalline nature of NCs. The SEM and TEM studies revealed the spherical morphology with an average size of 36.2 nm and 31.1 nm, respectively. Zeta potential analysis confirms the stability of CuO-ZnO NCs with a negative potential of −21.3. CuO-ZnO NCs exhibit good antimicrobial properties against Staphylococcus aureus and Trichoderma viride. Moreover, NCs showed remarkable induced apoptosis against A549 and MCF-7 with an IC₅₀ 27.25 μg/mL and 24.35 μg/mL, respectively. A molecular docking computational study was used to validate the experimental antibacterial efficiency of both plant extract and NCs. The protein, dihydropteroate synthase showed the highest binding efficiency of −7.27 Kcal/mol and -5.90 Kcal/mol for bioactive molecule and CuO-ZnO NCs, respectively. Furthermore, photocatalytic efficiency was examined through the breakdown of the toxic pollutant methylene blue under sunlight irradiation, the degradation efficiency to be 96.1 % after 90 min of irradiation. The results revealed excellent photocatalytic properties of CuO-ZnO NCs due to improved charge separation and reduced recombination rates. Hence, the present study suggests that the synthesized CuO-ZnO NCs through the green route hold promise for environmental remediation and biological applications.

{"title":"Bio-fabrication of multifunctional CuO-ZnO nanocomposites for improved biomedical and industrial wastewater purification by experimental and molecular docking computational investigation","authors":"M. Dhanalakshmi, Venkatramana Losetty","doi":"10.1016/j.jwpe.2025.106933","DOIUrl":"10.1016/j.jwpe.2025.106933","url":null,"abstract":"<div><div>The current research focused on the fabrication of copper oxide‑zinc oxide nanocomposites (CuO-ZnO NCs) using <em>Ceropegia debilis</em> plant extract. The green fabricated material was characterized to analyse its structural, optical, and morphological properties. The NCs showed maximum absorbance at 372 nm with an energy gap of 2.95 eV. XRD and XPS analysis confirms the existence of Cu and Zn in the fabricated CuO-ZnO NCs. The peak indexed at 36.2<sup>⸰</sup> revealed the crystalline nature of NCs. The SEM and TEM studies revealed the spherical morphology with an average size of 36.2 nm and 31.1 nm, respectively. Zeta potential analysis confirms the stability of CuO-ZnO NCs with a negative potential of −21.3. CuO-ZnO NCs exhibit good antimicrobial properties against <em>Staphylococcus aureus</em> and <em>Trichoderma viride</em>. Moreover, NCs showed remarkable induced apoptosis against A549 and MCF-7 with an IC<sub>50</sub> 27.25 μg/mL and 24.35 μg/mL, respectively. A molecular docking computational study was used to validate the experimental antibacterial efficiency of both plant extract and NCs. The protein, <em>dihydropteroate synthase</em> showed the highest binding efficiency of −7.27 Kcal/mol and -5.90 Kcal/mol for bioactive molecule and CuO-ZnO NCs, respectively. Furthermore, photocatalytic efficiency was examined through the breakdown of the toxic pollutant methylene blue under sunlight irradiation, the degradation efficiency to be 96.1 % after 90 min of irradiation. The results revealed excellent photocatalytic properties of CuO-ZnO NCs due to improved charge separation and reduced recombination rates. Hence, the present study suggests that the synthesized CuO-ZnO NCs through the green route hold promise for environmental remediation and biological applications.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 106933"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097889","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

Fast swirl–coalescence filtration: Alternative to conventional inclined plate–air flotation for refinery sewage treatment

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2024.106920

Lin Li, Hongkai Jie, Rongcheng Mao, Yudong Li, Guidong Chen, Qiang Yang, Hao Lu

Efficient oil–solid removal from refinery sewage, especially highly concentrated electric desalting sewage, is key to ensuring the stability of subsequent biochemical treatment processes and meeting the sewage purification standards. The conventional inclined plate–air flotation process, which relies on chemical flocculation, is unable to meet the pretreatment requirements owing to the continuously increasing levels of petroleum pollutants and suspended substances (SSs) in refinery sewage. Herein, a physical oil–solid removal process, named fast swirl–coalescence filtration, is proposed and verified via pilot tests. This technology can reduce the average oil concentration of refinery and electric desalting sewage to 11.08 and 19.62 mg/L, with average oil removal efficiencies of 96.47 % and 99.89 %, respectively. Further, the average SSs concentration can be reduced to 16.47 and 70.90 mg/L, with average suspension removal efficiencies of 87.46 % and 91.09 %, respectively. Compared with the conventional treatment process, the proposed treatment process reduces the equipment footprint by 75 %, eliminates the use of chemical agents, and shows good adaptability to incoming sewage fluctuations, providing a new strategy for green and efficient treatment of refinery sewage.

{"title":"Fast swirl–coalescence filtration: Alternative to conventional inclined plate–air flotation for refinery sewage treatment","authors":"Lin Li, Hongkai Jie, Rongcheng Mao, Yudong Li, Guidong Chen, Qiang Yang, Hao Lu","doi":"10.1016/j.jwpe.2024.106920","DOIUrl":"10.1016/j.jwpe.2024.106920","url":null,"abstract":"<div><div>Efficient oil–solid removal from refinery sewage, especially highly concentrated electric desalting sewage, is key to ensuring the stability of subsequent biochemical treatment processes and meeting the sewage purification standards. The conventional inclined plate–air flotation process, which relies on chemical flocculation, is unable to meet the pretreatment requirements owing to the continuously increasing levels of petroleum pollutants and suspended substances (SSs) in refinery sewage. Herein, a physical oil–solid removal process, named fast swirl–coalescence filtration, is proposed and verified via pilot tests. This technology can reduce the average oil concentration of refinery and electric desalting sewage to 11.08 and 19.62 mg/L, with average oil removal efficiencies of 96.47 % and 99.89 %, respectively. Further, the average SSs concentration can be reduced to 16.47 and 70.90 mg/L, with average suspension removal efficiencies of 87.46 % and 91.09 %, respectively. Compared with the conventional treatment process, the proposed treatment process reduces the equipment footprint by 75 %, eliminates the use of chemical agents, and shows good adaptability to incoming sewage fluctuations, providing a new strategy for green and efficient treatment of refinery sewage.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 106920"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097890","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

Agro-waste ash extracts facilitated green synthesis of CuO nanoparticles with efficient catalytic and photocatalytic activities for environmental remediation

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2025.107004

Partha Pratim Sarma , Pulakesh Borah , Manash R. Das , Pranjal K. Baruah

The utilization of natural resources as a green, sustainable, and cost-effective platform for nanomaterial fabrication has garnered significant attention from researchers. This study focuses on the green and sustainable synthesis of copper oxide nanoparticles (CuONPs) using agro-wastes—specifically papaya bark (PB) and banana stem (BS) ash extracts. These extracts not only serve as natural bases but also enable sustainable nanoparticle fabrication via a straightforward method under ambient stirring conditions, eliminating the need for microwave or hydrothermal treatments. The synthesized CuONPs were extensively characterized using UV, FT-IR, XPS, XRD, SEM, and TEM analyses, revealing average particle sizes of 16.67 and 12.56 nm with spherical and rod-shaped morphologies, respectively. The elemental composition of the agro-wastes was analysed via EDX analysis. UV–visible spectroscopy showed band gaps of 2.72 and 3.30 eV. The photocatalytic performance of the CuONPs was evaluated using Rhodamine B and Eosin yellow dyes under sunlight, with the degradation mechanism were also described. Furthermore, the CuONPs demonstrated catalytic activity by facilitating the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH₄. This work highlights a sustainable approach for CuO nanostructure synthesis with promising applications in environmental remediation.

{"title":"Agro-waste ash extracts facilitated green synthesis of CuO nanoparticles with efficient catalytic and photocatalytic activities for environmental remediation","authors":"Partha Pratim Sarma , Pulakesh Borah , Manash R. Das , Pranjal K. Baruah","doi":"10.1016/j.jwpe.2025.107004","DOIUrl":"10.1016/j.jwpe.2025.107004","url":null,"abstract":"<div><div>The utilization of natural resources as a green, sustainable, and cost-effective platform for nanomaterial fabrication has garnered significant attention from researchers. This study focuses on the green and sustainable synthesis of copper oxide nanoparticles (CuONPs) using agro-wastes—specifically papaya bark (PB) and banana stem (BS) ash extracts. These extracts not only serve as natural bases but also enable sustainable nanoparticle fabrication via a straightforward method under ambient stirring conditions, eliminating the need for microwave or hydrothermal treatments. The synthesized CuONPs were extensively characterized using UV, FT-IR, XPS, XRD, SEM, and TEM analyses, revealing average particle sizes of 16.67 and 12.56 nm with spherical and rod-shaped morphologies, respectively. The elemental composition of the agro-wastes was analysed via EDX analysis. UV–visible spectroscopy showed band gaps of 2.72 and 3.30 eV. The photocatalytic performance of the CuONPs was evaluated using Rhodamine B and Eosin yellow dyes under sunlight, with the degradation mechanism were also described. Furthermore, the CuONPs demonstrated catalytic activity by facilitating the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH<sub>4</sub>. This work highlights a sustainable approach for CuO nanostructure synthesis with promising applications in environmental remediation.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 107004"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097899","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

Optimized photocatalytic degradation of 2-naphthol using ZnO/rGO nanocomposites synthesized from palm kernel shell waste

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2025.106977

Nuhaa Faaizatunnisa , Ratna Ediati , Enis Nadia M.D. Yusof , Arif Fadlan , Karelius Karelius , Ummu Kulsum , Muhammad Naufal Ariesta

The widespread use of 2-naphthol in various industries, coupled with its high toxicity and persistence as an organic pollutant, necessitates effective degradation methods. This study synthesized ZnO/reduced graphene oxide (rGO) nanocomposites (NCs) via a hydrothermal method for photocatalytic degradation of 2-naphthol. Graphene oxide (GO), derived from palm kernel shell waste through a modified Hummers method, was reduced to rGO using N,N-Dimethylformamide (DMF), which also facilitated ZnO nanomaterial formation on GO. Given the growing environmental concerns associated with hazardous pollutants, the development of such nanocomposites represents a promising advancement in photocatalytic technology for sustainable remediation. The GO loading was optimized to enhance performance, with results showing improved surface area and adsorption capacity. ZnO/rGO NCs with 10 % GO loading (ZR(10)) achieved 95 % 2-naphthol degradation after 120 min of irradiation, outperforming pure ZnO and other ZR NCs. ZR(10) retained 67.7 % activity after three reuse cycles, with a second-order kinetic rate constant of 0.0115 h⁻¹. Additionally, the catalyst maintained its ZnO crystal structure, demonstrating excellent stability. A potential degradation mechanism of 2-naphthol by ZR(10) is proposed. This study highlights the eco-friendly use of palm kernel shell waste as a carbon precursor and underscores the potential of ZnO/rGO as efficient photocatalysts for environmental remediation.

{"title":"Optimized photocatalytic degradation of 2-naphthol using ZnO/rGO nanocomposites synthesized from palm kernel shell waste","authors":"Nuhaa Faaizatunnisa , Ratna Ediati , Enis Nadia M.D. Yusof , Arif Fadlan , Karelius Karelius , Ummu Kulsum , Muhammad Naufal Ariesta","doi":"10.1016/j.jwpe.2025.106977","DOIUrl":"10.1016/j.jwpe.2025.106977","url":null,"abstract":"<div><div>The widespread use of 2-naphthol in various industries, coupled with its high toxicity and persistence as an organic pollutant, necessitates effective degradation methods. This study synthesized ZnO/reduced graphene oxide (rGO) nanocomposites (NCs) via a hydrothermal method for photocatalytic degradation of 2-naphthol. Graphene oxide (GO), derived from palm kernel shell waste through a modified Hummers method, was reduced to rGO using <em>N</em>,<em>N</em>-Dimethylformamide (DMF), which also facilitated ZnO nanomaterial formation on GO. Given the growing environmental concerns associated with hazardous pollutants, the development of such nanocomposites represents a promising advancement in photocatalytic technology for sustainable remediation. The GO loading was optimized to enhance performance, with results showing improved surface area and adsorption capacity. ZnO/rGO NCs with 10 % GO loading (ZR(10)) achieved 95 % 2-naphthol degradation after 120 min of irradiation, outperforming pure ZnO and other ZR NCs. ZR(10) retained 67.7 % activity after three reuse cycles, with a second-order kinetic rate constant of 0.0115 h<sup>−1</sup>. Additionally, the catalyst maintained its ZnO crystal structure, demonstrating excellent stability. A potential degradation mechanism of 2-naphthol by ZR(10) is proposed. This study highlights the eco-friendly use of palm kernel shell waste as a carbon precursor and underscores the potential of ZnO/rGO as efficient photocatalysts for environmental remediation.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 106977"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097431","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

Denitrification efficiency and accumulation characteristics of residual organics for the main compositions in woody biomass using a carbon source

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2025.106959

Yuxin Li , Rongting Hu , Zhuolin Yang , Riyue Huang , Yi Jiang

Woody biomass is a popular carbon source used in denitrification to eliminate nitrate pollutants in different water bodies. The denitrification exhibited a low removal rate and high organic residues owing to its complex compositions. Herein, lignin, extractive, and hemicellulose were removed from representative sawdust to obtain various fractions. These fractions released carbon in static water, and the resulting solutions were used for denitrification with excess nitrate. Results showed that chemical treatment efficiently separated the main compositions, with notable changes in infrared absorption peaks at specific wavelengths. Carbon release followed second-order (determination coefficient, R² > 0.84) and zero-order (R² > 0.89) kinetics during rapid and slow-releasing periods, respectively. The carbon-release rate increased by 5.2 times following lignin removal, while it gradually decreased with extractive and hemicellulose removal. Lignin reduction decreased the residues of dissolved organic carbon (DOC), with 55.6 %–63.1 % of DOC remaining after denitrification. The released carbon products of reducing sugars and volatile fatty acids (VFAs) were exhausted; however, most total phenols remained after denitrification. Residual DOC mainly included soluble microbial products and fulvic-like and humic-like substances, which decreased with the removal of lignin. This study demonstrated that the limit step of carbon release in the denitrification process could be accelerated by modifying the compositions of woody biomass and revealed the accumulation characteristics for the residual organics.

{"title":"Denitrification efficiency and accumulation characteristics of residual organics for the main compositions in woody biomass using a carbon source","authors":"Yuxin Li , Rongting Hu , Zhuolin Yang , Riyue Huang , Yi Jiang","doi":"10.1016/j.jwpe.2025.106959","DOIUrl":"10.1016/j.jwpe.2025.106959","url":null,"abstract":"<div><div>Woody biomass is a popular carbon source used in denitrification to eliminate nitrate pollutants in different water bodies. The denitrification exhibited a low removal rate and high organic residues owing to its complex compositions. Herein, lignin, extractive, and hemicellulose were removed from representative sawdust to obtain various fractions. These fractions released carbon in static water, and the resulting solutions were used for denitrification with excess nitrate. Results showed that chemical treatment efficiently separated the main compositions, with notable changes in infrared absorption peaks at specific wavelengths. Carbon release followed second-order (determination coefficient, R<sup>2</sup> > 0.84) and zero-order (R<sup>2</sup> > 0.89) kinetics during rapid and slow-releasing periods, respectively. The carbon-release rate increased by 5.2 times following lignin removal, while it gradually decreased with extractive and hemicellulose removal. Lignin reduction decreased the residues of dissolved organic carbon (DOC), with 55.6 %–63.1 % of DOC remaining after denitrification. The released carbon products of reducing sugars and volatile fatty acids (VFAs) were exhausted; however, most total phenols remained after denitrification. Residual DOC mainly included soluble microbial products and fulvic-like and humic-like substances, which decreased with the removal of lignin. This study demonstrated that the limit step of carbon release in the denitrification process could be accelerated by modifying the compositions of woody biomass and revealed the accumulation characteristics for the residual organics.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 106959"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097515","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

Hybrid electron donor-driven partial denitrification coupled with anammox process for the treatment of high-concentration ammonium nitrate wastewater: Element transformation and microbial community structure

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2025.106939

Wenlu Li , Luying Wu , Zhenguo Chen , Yongxing Chen , Jiayi Li , Yu Zhang , Yuzhu Yan , Xiaojun Wang

In this study, a mixotrophic nitrogen removal system integrating sulfur-oxidizing autotrophic denitrification, heterotrophic denitrification and anammox was established for the treatment of high-strength ammonium nitrate wastewater. After 170 days of continuous cultivation, the total nitrogen removal rate achieved 1.05 ± 0.05 kg N/(m³·d), with remarkable nitrogen removal efficiency of 88.09 ± 3.97 %, and sulfate production effectively reduced to 37.59 ± 5.44 %. In-situ batch test results not only investigate the element transformation in Mixotrophic Partial Denitrification coupled with Anammox, but also indicated that thiosulfate-driven autotrophic denitrification accounted for 88.20 % of nitrate reduction. Thiobacillus and Thermomonas was identified as the predominant sulfur-oxidizing bacteria. The addition of a low concentration of Chemical Oxygen Demand maintained the relative abundance of heterotrophic denitrification bacteria (27.3–35.6 %). Furthermore, the relative abundance of anammox bacteria including Candidatus_Kuenenia and Candidatus_Brocadia constituted 36.2 %. This research provides a stable and efficient treatment process for high-concentration ammonium nitrate wastewater with low carbon-to‑nitrogen ratios.

{"title":"Hybrid electron donor-driven partial denitrification coupled with anammox process for the treatment of high-concentration ammonium nitrate wastewater: Element transformation and microbial community structure","authors":"Wenlu Li , Luying Wu , Zhenguo Chen , Yongxing Chen , Jiayi Li , Yu Zhang , Yuzhu Yan , Xiaojun Wang","doi":"10.1016/j.jwpe.2025.106939","DOIUrl":"10.1016/j.jwpe.2025.106939","url":null,"abstract":"<div><div>In this study, a mixotrophic nitrogen removal system integrating sulfur-oxidizing autotrophic denitrification, heterotrophic denitrification and anammox was established for the treatment of high-strength ammonium nitrate wastewater. After 170 days of continuous cultivation, the total nitrogen removal rate achieved 1.05 ± 0.05 kg N/(m<sup>3</sup>·d), with remarkable nitrogen removal efficiency of 88.09 ± 3.97 %, and sulfate production effectively reduced to 37.59 ± 5.44 %. In-situ batch test results not only investigate the element transformation in Mixotrophic Partial Denitrification coupled with Anammox, but also indicated that thiosulfate-driven autotrophic denitrification accounted for 88.20 % of nitrate reduction. <em>Thiobacillus</em> and <em>Thermomonas</em> was identified as the predominant sulfur-oxidizing bacteria. The addition of a low concentration of Chemical Oxygen Demand maintained the relative abundance of heterotrophic denitrification bacteria (27.3–35.6 %). Furthermore, the relative abundance of anammox bacteria including <em>Candidatus_Kuenenia</em> and <em>Candidatus_Brocadia</em> constituted 36.2 %. This research provides a stable and efficient treatment process for high-concentration ammonium nitrate wastewater with low carbon-to‑nitrogen ratios.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 106939"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097892","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

Assessing the acoustic cavitation added effect on the adsorption of copper and ciprofloxacin in wastewater

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering

Pub Date : 2025-02-01 DOI: 10.1016/j.jwpe.2025.106935

José Fernandes , Hélder Puga , Paulo J. Ramísio

Emerging pollutants in wastewater pose severe challenges to urban sustainability and ecosystem health, as conventional treatment plants often struggle to remove them effectively. A promising method to enhance treatment efficiency is acoustic cavitation, a process induced by high-power ultrasound waves. This technique generates microbubbles that grow and collapse violently, creating extreme localized conditions of high temperature and pressure. These conditions stimulate radical formation and can enhance pollutant degradation and adsorption processes, significantly improving removal rates. In this study, ultrasound (US)-assisted adsorption increased removal rates substantially within minutes. Organic compost (OC) as an adsorbent achieved a 4.4-fold increase in copper (Cu) adsorption and a 1.7-fold increase in Ciprofloxacin (CIP) adsorption within the first minute of US application. Notably, US-assisted adsorption removed 70 % of CIP in 1 min and 89 % of Cu in 5 min, whereas traditional processes required 15 min for comparable CIP removal and only reached 69 % Cu removal after 30 min.

These findings indicate that the US, acting as a catalyst, can positively enhance processes already proven effective in pollutant removal, with a particular emphasis on the adsorption of emerging contaminants using an organic compost derived from organic waste, aligning with a circular economy approach.

{"title":"Assessing the acoustic cavitation added effect on the adsorption of copper and ciprofloxacin in wastewater","authors":"José Fernandes , Hélder Puga , Paulo J. Ramísio","doi":"10.1016/j.jwpe.2025.106935","DOIUrl":"10.1016/j.jwpe.2025.106935","url":null,"abstract":"<div><div>Emerging pollutants in wastewater pose severe challenges to urban sustainability and ecosystem health, as conventional treatment plants often struggle to remove them effectively. A promising method to enhance treatment efficiency is acoustic cavitation, a process induced by high-power ultrasound waves. This technique generates microbubbles that grow and collapse violently, creating extreme localized conditions of high temperature and pressure. These conditions stimulate radical formation and can enhance pollutant degradation and adsorption processes, significantly improving removal rates. In this study, ultrasound (US)-assisted adsorption increased removal rates substantially within minutes. Organic compost (OC) as an adsorbent achieved a 4.4-fold increase in copper (Cu) adsorption and a 1.7-fold increase in Ciprofloxacin (CIP) adsorption within the first minute of US application. Notably, US-assisted adsorption removed 70 % of CIP in 1 min and 89 % of Cu in 5 min, whereas traditional processes required 15 min for comparable CIP removal and only reached 69 % Cu removal after 30 min.</div><div>These findings indicate that the US, acting as a catalyst, can positively enhance processes already proven effective in pollutant removal, with a particular emphasis on the adsorption of emerging contaminants using an organic compost derived from organic waste, aligning with a circular economy approach.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"70 ","pages":"Article 106935"},"PeriodicalIF":6.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0