Journal of water process engineering最新文献_第3页

Construction of glycine modified NZVI@gelatin aerogel for high efficient activation of dissolved oxygen towards catalytic degradation of tetracycline

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-22 DOI: 10.1016/j.jwpe.2025.107438

Xiangyu Wang , Kunhong Wu , Ping Ning , Zhiling Guo , Peng Zhang , Lisi Wu , Iseult Lynch

{"title":"Construction of glycine modified NZVI@gelatin aerogel for high efficient activation of dissolved oxygen towards catalytic degradation of tetracycline","authors":"Xiangyu Wang , Kunhong Wu , Ping Ning , Zhiling Guo , Peng Zhang , Lisi Wu , Iseult Lynch","doi":"10.1016/j.jwpe.2025.107438","DOIUrl":"10.1016/j.jwpe.2025.107438","url":null,"abstract":"<div><div>The congregate and passivation of Nanoscale zero-valent iron (NZVI) can be significant challenges in wastewater remediation. In this study, a glycine-modified gelatin carbon aerogel-loaded NZVI catalyst (NZVI@G-GEL) was synthesized in an atmospheric setting, eliminating the requirement for nitrogen shielding. This approach significantly ameliorated the deficiencies of NZVI and aerogel. The comparison of SEM, BET, and Fe leaching demonstrated that NZVI@G-GEL not only augmented the active sites and enhanced the catalytic activity but also mitigated the risk of secondary pollution. Under the optimal conditions (0.12 g/L, pH = 6.5, 30 mg/L TC, 298 K), the degradation efficiency of tetracycline (TC) by NZVI@G-GEL reached 96.99 % in 60 min. This represents a 29.68 % improvement compared to the degradation efficiency of unmodified NZVI. Electron paramagnetic resonance (EPR) analysis shows that dissolved oxygen (DO) can be activated to generate free radicals (<img>OH, <img>O<sub>2</sub><sup>−</sup>) and non-radicals (<sup>1</sup>O<sub>2</sub>) in synergistic degradation of catalytic TC with each other in the absence of any oxidant addition. Additionally, fifteen intermediate products were identified through the use of liquid chromatography-mass spectrometry (LC-MS), leading to the suggestion of three potential degradation mechanisms for TC. This research offers a novel strategy for the breakdown of organic contaminants in water using advanced oxidation techniques, eliminating the need for additional oxidants and energy.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107438"},"PeriodicalIF":6.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681339","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

Combining POA-VMD for multi-machine learning methods to predict ammonia nitrogen in the largest freshwater lake in China (Poyang Lake)

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-21 DOI: 10.1016/j.jwpe.2025.107511

Chengming Luo , Xihua Wang , Y. Jun Xu , Cong Wang , Qinya Lv , Xuming Ji , Boyang Mao , Shunqing Jia , Zejun Liu , Yanxin Rong , Yan Dai

{"title":"Combining POA-VMD for multi-machine learning methods to predict ammonia nitrogen in the largest freshwater lake in China (Poyang Lake)","authors":"Chengming Luo , Xihua Wang , Y. Jun Xu , Cong Wang , Qinya Lv , Xuming Ji , Boyang Mao , Shunqing Jia , Zejun Liu , Yanxin Rong , Yan Dai","doi":"10.1016/j.jwpe.2025.107511","DOIUrl":"10.1016/j.jwpe.2025.107511","url":null,"abstract":"<div><div>Nitrogen pollution, especially ammonia nitrogen (NH₃-N), poses a serious environmental threat to the ecological health of large freshwater lakes and the sustainable use of water resources. However, accurately predicting NH₃-N levels over a period of time remains a challenging task because of the complexity and dynamics of water quality data, which are influenced by various environmental factors. Traditional time series methods and stand-alone machine learning models are often limited in making accurate predictions for complex nonlinear data. To this end, we propose a novel hybrid prediction framework that combines the Pelican Optimization Algorithm-Variable Mode Decomposition (POA-VMD) with a variety of machine learning methods, including Random Forests (RF), Transformers, Long Short-Term Memory (LSTM), Bi-directional LSTMs, and Gated Recurrent Units. Among them, POA is applied to the hyperparameter optimization of VMD, which reduces the effects of redundant patterns and noise by automatically searching for optimal hyperparameter combinations. The results show that by combining POA-VMD, the prediction performance of all the machine learning models applied in this study is improved. The comparison reveals that POA-VMD-RF has the highest prediction accuracy with an R<sup>2</sup> of 0.9153, which is 26.4 % higher than the original RF model, while the POA-VMD-LSTM, POA-VMD-BiLSTM and POA-VMD-GRU hybrid models also have good prediction performances, with an R<sup>2</sup> of more than 0.8. The results highlight the potential of the proposed hybrid model for NH₃-N prediction in large freshwater lakes, which can provide important support for water quality monitoring and management.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107511"},"PeriodicalIF":6.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681336","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

Microplastics from industrial sources: A known but overlooked problem

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-21 DOI: 10.1016/j.jwpe.2025.107487

Ozan Karakurt, Oğuzhan Altuntaş, İrem Şimşek, Dilara Hatinoğlu, F. Dilek Sanin

{"title":"Microplastics from industrial sources: A known but overlooked problem","authors":"Ozan Karakurt, Oğuzhan Altuntaş, İrem Şimşek, Dilara Hatinoğlu, F. Dilek Sanin","doi":"10.1016/j.jwpe.2025.107487","DOIUrl":"10.1016/j.jwpe.2025.107487","url":null,"abstract":"<div><div>Current studies suggest that industrial wastewaters can be major sources of microplastics (MPs), but specific studies are rare in regard to specific industries and organized industrial zones (OIZs). This study addresses this gap by analyzing two different OIZs and two selected industries from each in terms of their MPs concentrations, characteristics, their diurnal variation and the effect of pretreatments employed by the industries. One OIZ contains an industrial WWTP (IWWTP) so the effect of this plant by the analysis of wastewater from inlet, outlet as well as wastewater and sludge from specific units are evaluated. MPs encountered had a variety of sizes, but the smallest size (38 μm to 425 μm) dominated almost all the samples analyzed. Variety of plastics have been observed including the most common types as well as rare ones. MPs' relative abundances changed and diversity decreased after treatment. It is shown that IWWTPs can reduce MP concentrations up to 95 %, and results in the capture of 127 million particles each day. However, the results also show that industrial wastewaters can still emit 7.6 million particles, which indicates both the magnitude of the problem and the effectiveness of WWTPs, considering that the other OIZ without a WWTP discharges 384 million MPs daily.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107487"},"PeriodicalIF":6.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681337","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

A “honeycomb” heterostructured α-MnO2 nanowire/NiCo2O4 hollow nanocages with superior photoelectrocatalytic performance for water purification

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-21 DOI: 10.1016/j.jwpe.2025.107521

Yuejie Li , Yan Chen , Xinyue Wang , Khalil Md Ibrahim , Guowen Wang , Xinxin Zhang , Hongchao Ma

{"title":"A “honeycomb” heterostructured α-MnO2 nanowire/NiCo2O4 hollow nanocages with superior photoelectrocatalytic performance for water purification","authors":"Yuejie Li , Yan Chen , Xinyue Wang , Khalil Md Ibrahim , Guowen Wang , Xinxin Zhang , Hongchao Ma","doi":"10.1016/j.jwpe.2025.107521","DOIUrl":"10.1016/j.jwpe.2025.107521","url":null,"abstract":"<div><div>Recently, employing photoelectrocatalysis (PEC) strategy to eliminate environmental impact and hazards of hard-to-handle antibiotics such as sulfamethoxazole (SMX) has been given increasing attention. Herein, a “honeycomb” heterostructured α-MnO<sub>2</sub> nanowire/NiCo<sub>2</sub>O<sub>4</sub> hollow nanocages PEC catalyst is fabricated by using a continuous assembly process as following: (1) construction of α-MnO<sub>2</sub> nanowire carrier, (2) surface adhesion of ZIF-67, and (3) Co/Ni ion exchange. The as-synthesized Ti/α-MnO₂@NiCo₂O₄ demonstrated excellent PEC performance for degrading SMX, as compared with that of α-MnO<sub>2</sub>, α-MnO<sub>2</sub>@ZIF-67. Especially, the optimized Ti/α-MnO₂@NiCo₂O₄-30 showed removal rate of 98.2 % for SMX in 30 min, outstanding durability (~8000 s), and tolerable reusability (the removal rate can still reach 76.5 % for SMX after five cycles). The improvement of PEC performance for Ti/α-MnO₂@NiCo₂O₄ can be attributed to that the unique porous structure formed numerous electrochemically active sites, and the α-MnO₂ nanowire as common channel for charge transfer promoted the migration of induced carriers. The DFT calculation indicated that a II-scheme heterojunction can be formed over the α-MnO<sub>2</sub>@NiCo<sub>2</sub>O<sub>4</sub> composite, which can effectively inhibit the recombination of induced carriers, facilitate the degradation process. This work provides a valuable approach for constructing nanohybrids with targeted functionalities, opening new possibilities for the application of nanomaterials in wastewater treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107521"},"PeriodicalIF":6.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681424","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

Trace copper doped LaMnO3 perovskite for PMS activation via electron transfer process towards pollutant elimination

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-21 DOI: 10.1016/j.jwpe.2025.107486

Qianyi Wang , Wan Yu , Wenjun Xu, Zhen Li, Xiren Xia, Yin Xu

{"title":"Trace copper doped LaMnO3 perovskite for PMS activation via electron transfer process towards pollutant elimination","authors":"Qianyi Wang , Wan Yu , Wenjun Xu, Zhen Li, Xiren Xia, Yin Xu","doi":"10.1016/j.jwpe.2025.107486","DOIUrl":"10.1016/j.jwpe.2025.107486","url":null,"abstract":"<div><div>Doping strategies are widely employed to enhance the catalytic activity of perovskites for peroxymonosulfate (PMS) activation in removing organic pollutants in water. However, limited research has explored the performance enhancement and underlying mechanism associated with trace doping, which is particularly important for saving dopant metals and cost, and also lower the risk of metal ion loss. In this study, we investigated the profound effects of trace copper doping in LaMnO<sub>3</sub> on PMS activation for contaminant removal. Compared to pristine LaMnO<sub>3</sub>, the catalytic oxidation performance was significantly enhanced by trace copper doping (1.3 wt% Cu), achieving over 91.0 % removal of acid orange 7 (AO7) within 45 min using the LaMn<sub>0.95</sub>Cu<sub>0.05</sub>O<sub>3</sub> (LMC5)/PMS system. Comprehensive characterizations revealed that copper incorporation primarily fortified the redox ability and electron transfer efficiency of LaMnO<sub>3</sub>, thereby improving its catalytic efficacy. Furthermore, unlike previous studies reporting on radical oxidation mechanisms, the surface PMS* complexes with Mn(III) serving as the active sites were identified as the predominant reactive species responsible for pollutant degradation. The intermediates of pollutant degradation were identified and their toxicity was also assessed by ECOSAR program. The system's practical feasibility was further underscored by treating diverse contaminants and evaluating the interference of coexisting anions in water. Briefly, this study provides valuable insights into enhancing the catalytic activity of perovskites for PMS activation in water treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107486"},"PeriodicalIF":6.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681426","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

Investigating arsenic (III and V) continuous flow adsorption by modified calcined mussel shells

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-21 DOI: 10.1016/j.jwpe.2025.107488

Roya Sadat Neisan , Noori M. Cata Saady , Carlos Bazan , Sohrab Zendehboudi

{"title":"Investigating arsenic (III and V) continuous flow adsorption by modified calcined mussel shells","authors":"Roya Sadat Neisan , Noori M. Cata Saady , Carlos Bazan , Sohrab Zendehboudi","doi":"10.1016/j.jwpe.2025.107488","DOIUrl":"10.1016/j.jwpe.2025.107488","url":null,"abstract":"<div><div>This study uses modified calcined mussel shells to adsorb arsenic (As(III) and As(V)) in continuous flow tests. It evaluates the adsorbent's effectiveness and regeneration capability over multiple cycles. The experiments used arsenic initial concentrations (I.C.) of 10 and 50 mg/L for breakthrough curve analysis, while reuse and co-ions (Cl<sup>−</sup>, SO<sub>4</sub><sup>2−</sup>, NO<sub>3</sub><sup>−</sup>, HCO<sub>3</sub><sup>−</sup>, and PO<sub>4</sub><sup>3−</sup>) interference tests were conducted at 50 mg/L. Increasing the adsorbate I.C. from 10 to 50 mg/L and the flowrate from 5 to 10 mL/min, while decreasing the adsorbent mass from 10 to 5 g, improved the maximum adsorption capacity for both adsorbates (As(III): 8.99 and As(V): 26.60 mg/g). Conversely, simultaneously increasing the flowrate from 5 to 10 mL/min and decreasing the adsorbent mass from 10 to 5 g accelerated breakthrough. Reusing the adsorbent for five cycles reduced the adsorption capacity by approximately 50 %, emphasizing the need for regeneration or replacement. Competing ions reduced the total arsenic adsorption capacity from 10.43 to 7.62 mg/g and shortened the 50 % breakthrough time from 417 to 305 min. This study also investigated the adsorption performance of mussel shell powder (MP) and mussel shell-coated disc (MD) for contaminant removal. MP exhibited a higher rate constant than MD, indicating faster adsorption kinetics and aligning with its superior adsorption capacity in certain conditions. However, MD demonstrated a higher maximum adsorption capacity. Further studies could investigate the long-term performance and stability of cartridges made from calcined mussel shells, including their lifetime and shelf life.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107488"},"PeriodicalIF":6.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681423","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

Investigation of nitrogen conversion efficiency in hydrogen-based autotrophic nitrate reduction reactor

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-21 DOI: 10.1016/j.jwpe.2025.107536

Yu-Fei Zhao, Chun-Yu Lai, He-Ping Zhao

{"title":"Investigation of nitrogen conversion efficiency in hydrogen-based autotrophic nitrate reduction reactor","authors":"Yu-Fei Zhao, Chun-Yu Lai, He-Ping Zhao","doi":"10.1016/j.jwpe.2025.107536","DOIUrl":"10.1016/j.jwpe.2025.107536","url":null,"abstract":"<div><div>This study investigates the performance of a hydrogen-based membrane biofilm reactor (MBfR) for nitrogen transformation over an extended operational period exceeding 200 days. During operational monitoring, the reactor sustained highly alkaline conditions with pH consistently exceeding 11.20, while achieving an ammonia conversion efficiency above 60 % and maintaining a nitrite accumulation rate below 1 %. Integrated mass balance calculations and microbial community profiling revealed the coexistence of denitrification and dissimilatory nitrate reduction to ammonium (DNRA) pathways within the nitrogen transformation network. A factorial experimental design was implemented with hydraulic retention time (HRT) and influent nitrate concentration as independent variables, generating nine distinct operational regimes through cross-variable permutations. Subsequent analysis of extensive experimental datasets enabled the development of a Response Surface Methodology (RSM) model to simulate nitrogen conversion dynamics. Model validation confirmed the statistical reliability and predictive accuracy of the RSM framework. Critical analysis demonstrated that ammonia conversion efficiency in the hydrogen autotrophic nitrate reduction system exhibited significant correlation with individual variables themselves but showed negligible dependence on their interactive effects. These findings provide novel insights into process optimization strategies and theoretical understanding of nitrogen convention.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107536"},"PeriodicalIF":6.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681425","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

Freezing facilitates the non-radical activation of peroxydisulfate by β-MnO2 for contaminants degradation

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-21 DOI: 10.1016/j.jwpe.2025.107530

Xuanying Cai , Tiansheng Chen , Zhenhua Dai , Peiren Ding , Yinhao Dai , Peng Fan , Jihong Xu , Yuankui Sun , Xiaohong Guan

{"title":"Freezing facilitates the non-radical activation of peroxydisulfate by β-MnO2 for contaminants degradation","authors":"Xuanying Cai , Tiansheng Chen , Zhenhua Dai , Peiren Ding , Yinhao Dai , Peng Fan , Jihong Xu , Yuankui Sun , Xiaohong Guan","doi":"10.1016/j.jwpe.2025.107530","DOIUrl":"10.1016/j.jwpe.2025.107530","url":null,"abstract":"<div><div>In cold regions, the freezing process typically presents difficulties for the remediation of contaminated soil and groundwater. However, in this work we report a freeze-assisted activation of peroxydisulphate (PDS) by <em>β</em>-MnO<sub>2</sub> for the degradation of phenolic compounds. The results showed that 60.8 % of 2,4-dichlorophenol (2,4-DCP) could be abated in frozen solutions at an initial pH of 6.5 within 2 h, whereas only 12.4 % of 2,4-DCP disappeared in aqueous solutions under other identical conditions. This enhancing effect was highly associated with the well-known freeze concentration effect, which could decrease the solution pH at the ice grain boundary by 2.4 units. Electron spin resonance (ESR) spectroscopic analysis and experiments with quenching agents and D<sub>2</sub>O suggested that radicals and singlet oxygen were not the major reactive species involved in the <em>β</em>-MnO<sub>2</sub>/PDS system. Instead, Raman analysis indicated that PDS may be bound to the surface of <em>β</em>-MnO<sub>2</sub> to form a reactive inner-sphere complex of MnO<sub>2</sub>-PDS*, which is proposed to account for the oxidative degradation of 2,4-DCP in aqueous and frozen <em>β</em>-MnO<sub>2</sub>/PDS systems. Chronoamperometric experiments further showed the redox potential of the <em>β</em>-MnO<sub>2</sub>/PDS system was as high as 1.2 V. This work highlights the possibility of applying the freezing effect to accelerate PDS activation by minerals abundant in environment and thus offers a promising strategy for pollution remediation in cold regions.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107530"},"PeriodicalIF":6.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681422","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

Brewery wastewater as an alternative external carbon source for full-scale municipal wastewater treatment plants: A performance, cost, and environmental assessment

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-20 DOI: 10.1016/j.jwpe.2025.107483

Jizhen Li , Zibo Xiao , Junjie Gu , Zhixiang Yang , Wenping Dong , Yinghao Liu , Zhenghe Xu , Weiqiang Zhu

{"title":"Brewery wastewater as an alternative external carbon source for full-scale municipal wastewater treatment plants: A performance, cost, and environmental assessment","authors":"Jizhen Li , Zibo Xiao , Junjie Gu , Zhixiang Yang , Wenping Dong , Yinghao Liu , Zhenghe Xu , Weiqiang Zhu","doi":"10.1016/j.jwpe.2025.107483","DOIUrl":"10.1016/j.jwpe.2025.107483","url":null,"abstract":"<div><div>Brewery wastewater, a byproduct of beer production, poses significant challenges for wastewater treatment. However, due to its high organic concentration and substantial volume, it can serve as a valuable carbon source for municipal wastewater treatment plants (WWTPs) where additional carbon is often required for denitrification. This study investigates the collaborative treatment of brewery wastewater and municipal wastewater in full-scale WWTPs using the anaerobic/anoxic/oxic (A<sup>2</sup>O) process, aiming to achieve mutual benefits in terms of cost savings and carbon emission reductions. Initially, a small amount of brewery wastewater (approximately 0.09 to 0.18 % of the WWTP's influent flow rate) was introduced into the WWTPs. The results indicated that the effluent quality remained stable throughout the experiment. The effluent chemical oxygen demand (COD) and total nitrogen concentrations were approximately 19.97 ± 6.49 mg COD L<sup>−1</sup> and 11.02 ± 1.79 mg N L<sup>−1</sup> in WWTP Plant-1, and 31.86 ± 5.29 mg COD L<sup>−1</sup> and 11.31 ± 1.84 mg N L<sup>−1</sup> in WWTP Plant-2, all of which meet discharge standards. This collaborative treatment approach provides both economic and environmental benefits for breweries and municipal WWTPs. Furthermore, increasing the flow rate of brewery wastewater to approximately 7.3 % of the WWTP's influent flow rate also yielded similarly positive results. Specifically, savings of $1.02 to $8.87 per ton of brewery wastewater and a reduction of 0.0014 to 0.0201 tons of CO<sub>2</sub> equivalent per ton of brewery wastewater were achieved. This research offers new insights into brewery wastewater treatment, demonstrating its potential to reduce overall treatment costs and carbon emissions.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107483"},"PeriodicalIF":6.3,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681526","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

Cucurbit[6]uril-heteropoly acids self-assemblies for adsorption and photocatalytic synergistic removal of diquat and paraquat in water

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-03-20 DOI: 10.1016/j.jwpe.2025.107518

Liling Zeng, Xianyan Ao, Manli Xu, Yunqian Zhang, Zhu Tao

{"title":"Cucurbit[6]uril-heteropoly acids self-assemblies for adsorption and photocatalytic synergistic removal of diquat and paraquat in water","authors":"Liling Zeng, Xianyan Ao, Manli Xu, Yunqian Zhang, Zhu Tao","doi":"10.1016/j.jwpe.2025.107518","DOIUrl":"10.1016/j.jwpe.2025.107518","url":null,"abstract":"<div><div>The synergistic removal of organic pollutants by adsorption and photocatalysis can be achieved by adsorption of enriched pollutants, followed by photocatalytic degradation to decompose the pollutants into non-toxic substances. In this work, a category of adsorption-photocatalytic bifunctional composite materials Q[6]-HPAs have been developed through the self-assembly of cucurbit[6]uril (Q[6]) and heteropoly acids (HPAs) like phosphomolybdic acid (PMA), phosphotungstic acid (PTA) and silicotungstic acid (STA). These composites exhibit enhanced surface area, structural stability, and extended light absorption into the visible range. Notably, Q[6]-HPAs have surface charge properties that attract cations and an energy band structure suitable for the generation of reactive oxygen species, thus possessing the potential for efficient adsorption and photodegradation of cationic pesticides. Among which, Q[6]-PMA and Q[6]-PTA removed over 95 % of diquat and paraquat through sequential adsorption and photodegradation. Electrostatic attraction drives the adsorption process, and ·O<sub>2</sub><sup>−</sup> and ·OH radicals detected via Electron Spin Resonance (ESR) are the key to photodegradation. Ultimately, Liquid Chromatography-Mass Spectrometer (LC-MS) analysis revealed potential degradation intermediates and products, and toxicity analysis was performed.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107518"},"PeriodicalIF":6.3,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681528","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