Water Environment Research最新文献

{"title":"Enhancing corn leaf fiber as phosphorus adsorbent material.","authors":"Fidelina T Flores, Gopu Nair, Jorge A Guzman, Maria Chu, Ashutosh Singh","doi":"10.1002/wer.70071","DOIUrl":"https://doi.org/10.1002/wer.70071","url":null,"abstract":"<p><p>The contribution of dissolved phosphorus (P) from tile drain systems in agricultural lands is significant, leading to water impairment and promoting algae bloom development in water bodies. Hence, there is an urgent need for sustainable and efficient technology, such as absorbent material, that can effectively remove P at low concentrations in these systems. This study aimed to evaluate fiber extraction from corn leaves and its potential for reducing dissolved P. Corn fibers were extracted from corn leaves using alkali treatment by varying the concentration of sodium hydroxide (5-15%w/w), extraction temperature (85-95°C), and time (60-120 min Results of the alkali extraction showed that the highest fiber recovery of 45.18 ± 0.39% g g^-1 was achieved at 10% NaOH at 85°C for 60 min condition. To enhance the phosphorus adsorption capacity of the extracted corn fibers, kaolinite clay (0-30% w/w) and calcium carbonate (0-50% w/w) were incorporated into the leaf fiber. Adsorption tests revealed that corn leaf fiber alone reduced phosphate concentration by 8.75 ± 1.49% within 60 minutes. However, when enhanced with 30% w/w kaolinite clay and 35% w/w calcium carbonate, the phosphate concentration in the solution decreased by 79.40 ± 11.90%. Energy-dispersive X-ray fluorescence analysis confirmed the presence of phosphorus in the enhanced adsorbent material following treatment. This study demonstrates the potential of enhancing agricultural wastes like corn leaf fiber as a low-cost alternative for phosphorus removal in agricultural tile drain systems that can later disposed of as fertilizer in a circular economy scheme. PRACTITIONER POINTS: Corn leaf fiber, extracted using alkali treatment, shows potential as a sustainable, low-cost adsorbent material for phosphorus removal Enhancing corn leaf fiber with kaolinite clay and calcium carbonate significantly improves phosphate reduction Converting agricultural waste like corn leaf as adsorbent material can help manage phosphorus levels in agricultural tile drains.</p>","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 5","pages":"e70071"},"PeriodicalIF":2.5,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12039883/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144030335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fouling behavior of nano/microplastics and COD, TOC, and TN removal in MBR: A comparative study.","authors":"Jonathan H J Chew, Ze Xuan Ng, Wee Tio, Lilin Zhang, Jia Cheng E Yang, Zhengtao Li, Darren D Sun","doi":"10.1002/wer.70099","DOIUrl":"10.1002/wer.70099","url":null,"abstract":"<p><p>The global upsurge in plastic demand has overwhelmed waste management systems, with nano/microplastic (N/MP) pollution emerging as a critical environmental challenge. With wastewater treatment plants (WWTPs) identified as a key source of MPs release to the aquatic environment, reflecting the design limitations in addressing MPs. Herein, this comparative study proposes a novel application of a complete mixed anoxic-oxidation membrane bioreactor (MBR) integrated with three varying polyvinylidene fluoride (PVDF) hollow fiber (HF) membranes for N/MP removal. The fouling behavior of MPs within the MBR was investigated to provide insight on the NPs rejection capabilities of the MBR. The results demonstrate high organics rejection efficiency (99.43% ± 0.13%), complete removal of NPs, and a direct correlation between membrane hydrophilicity and fouling resistance. Notably, hydrophilic and smooth membranes promoted the interaction of microbial aggregation and agglomerations of NPs, enhancing their capture. This study highlights the pivotal mechanism and role of membrane selection in optimizing MBR as an adaptable and effective solution for mitigating N/MPs pollution in wastewater. PRACTITIONER POINTS: Microplastics pollution in membrane bioreactor. Fouling mechanism of microplastics in membrane bioreactor. Fouling behavior of microplastics in membrane bioreactor. Interaction of microplastics and membrane bioreactor. Fouling resistance of microplastics in membrane bioreactor.</p>","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 5","pages":"e70099"},"PeriodicalIF":2.5,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144112146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Treatment of synthetic slaughterhouse wastewater using integrated UV/H₂O₂/TiO₂ photocatalytic advanced oxidation process enhanced by yeast-assisted dissolved air floatation.","authors":"Yeoh Jen Xen, Siti Nurul Ain Md Jamil, Fadhil Syukri, Thomas Shean Yaw Choong, Mohd Rashidi Abdul Manap, Rusli Daik, Mitsuhiko Koyama, Mohsen Nourouzi Mobarekeh","doi":"10.1002/wer.70069","DOIUrl":"https://doi.org/10.1002/wer.70069","url":null,"abstract":"<p><p>In treating slaughterhouse wastewater (SWW), conventional treatment processes (CTPs) such as anaerobic processes, membrane processes, and electrocoagulation have various weaknesses, including limited effectiveness, fouling issues, and high energy consumption. Conversely, photocatalytic advanced oxidation processes (PAOPs) have demonstrated superiority over CTPs. However, the treatment effectiveness of PAOPs significantly diminishes when SWW contains high levels of suspended solids (SS). This research explores the feasibility of pre-treating synthetic slaughterhouse wastewater (SSWW) using a novel yeast-assisted dissolved air flotation (YADAF) process to reduce the SS level. This process utilizes H₂O₂ and catalase enzymes from inexpensive yeast, readily available in local markets. Under optimized conditions, this combination generates O₂ bubbles to uplift particles as flocs, which can then be removed via a mechanical scraper before undergoing treatment with UV/H₂O₂/TiO₂ PAOP under optimized conditions. The enhanced process yielded a 93.75%, 83.23%, and 94.35% reduction in chemical oxygen demand (COD), 5-day carbonaceous biochemical oxygen demand (CBOD₅), total suspended solids (TSS), signifying increments of 41.15%, 56.59%, and 2867% in COD, CBOD₅, and TSS, respectively, compared to when using the UV/H₂O₂/TiO₂ PAOP alone, unenhanced. This demonstrates that YADAF significantly amplifies the effectiveness of conventional UV/H₂O₂/TiO₂ PAOP, making it a viable pre-treatment option that complements the latter in treating SSWW. PRACTITIONER POINTS: Yeast-assisted dissolved air floatation (YADAF) is a novel variant of dissolved air floatation (DAF) capable of removing 94.35% of TSS in 15 min. On top of that, when combined with advanced oxidation processes (AOP), the combined process can deliver 93.75%, 83.23%, and 94.35% reduction in COD, CBOD₅, and TSS, respectively, when used to treat synthetic slaughterhouse wastewater (SSWW). This novel process has never been used in the field of SWW treatment and can prove to be a valuable addition ready to be implemented into current treatment technologies.</p>","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 4","pages":"e70069"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144050328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An update on hybrid membrane aerated biofilm reactor technology.","authors":"Huanqi He, Avery Lachlann Carlson, Brett Wagner, Cheng Yang, Yi Cao, Mohammed Dilshaad Uzair, Glen T Daigger","doi":"10.1002/wer.70065","DOIUrl":"10.1002/wer.70065","url":null,"abstract":"<p><p>The hybrid membrane aerated biofilm reactor (MABR) process combines the advantages of the counter-diffusional biofilm and bubbleless aeration of the MABR with the good bioflocculation and carbon processing capabilities of suspended growth processes. These features result in a process with reduced physical footprint, excellent biological nutrient removal capabilities, potentially reduced greenhouse gas (GHG) emissions, and significantly reduced energy requirements that can be easily retrofitted into existing suspended growth processes. Commercially introduced in the mid-2010s, the demonstrated advantages of the hybrid MABR process are resulting in rapid full-scale adoption. Meanwhile, researchers are advancing knowledge on the hybrid MABR process and revealing potential opportunities for improved performance. This paper summarizes recent findings and identifies areas that can be further developed to advance hybrid MABR process evaluation and development. PRACTITIONER POINTS: Rapid application of the hybrid MABR process is leading to significant new developments that can enhance performance. Sizing MABR for nearly complete nitrification allows significant downsizing of the bioreactor, coupled with excellent nitrogen removal and energy savings. Online exhaust gas % O₂ and bulk ammonia concentration can be used to create a soft sensor characterizing changes in biofilm thickness enabling biofilm control to optimize performance. Further advancements through improved aeration control, configurations to achieve partial nitritation and annammox, and achieving granulation offer further significant advances.</p>","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 4","pages":"e70065"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11959682/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143754650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel alkylammonium-enhanced bentonite for effective Cr removal from wastewater.","authors":"Davron Abdikodirovich Khandamov, Tonni Agustiono Kurniawan, Akbarbek Shukhratovich Bekmirzayev, Dilnoza Kenjayevna Khandamova, Fatima Batool, Shavkat Payzievich Nurullayev, Botir Shukurillaevich Usmonov, Zebo Babakhanova, Choo Wou Onn","doi":"10.1002/wer.70061","DOIUrl":"10.1002/wer.70061","url":null,"abstract":"<p><p>The contamination of water resources by tannery wastewater containing Cr(III) presents significant public health risks due to its carcinogenic nature. Addressing this critical issue, the purpose of this research is to develop and evaluate novel alkylammonium-modified bentonite adsorbents for the efficient removal of Cr(III) from tannery wastewater. Batch experiments were conducted to investigate the effects of Cr concentration (0.02-0.2 mg/L), adsorbent dose (0.25-2.5 g/L), pH (2.0-8.0), and temperature (293-313 K) on adsorption performance. The alkylammonium modifications enhanced the surface area and ion-exchange capacity of bentonite by 40% and 50%, respectively. Optimal conditions for Cr adsorption were identified as 313 K, 1 g/L adsorbent dosage, pH 2.0, 30 min of reaction time, and 150 rpm of agitation speed. The Langmuir isotherm model (R² = 0.998 for trimethylammonium bentonite [TMB], 0.994 for triethylammonium bentonite [TEB]) confirmed monolayer adsorption, while negative Gibbs free energy values demonstrated the spontaneous nature of the process. Enthalpy changes (ΔH°) of 21.1 kJ/mol (natural Navbahor bentonite [NNB]), 26.7 kJ/mol (TMB), and 28.4 kJ/mol (TEB) indicated endothermic reactions. This work highlights the novelty of alkylammonium-modified bentonite as a cost-effective and scalable solution for reducing Cr(III) in wastewater, providing a promising pathway for sustainable water resource management. PRACTITIONER POINTS: Optimum conditions: 313 K, 1 g/L of dose, pH 2.0, 30 min of reaction, and 150 rpm of speed. Alkylammonium-modified bentonites remove 95% of Cr ions at pH 2.0 and 80% at pH 7.0. The adsorption capacity of modified bentonites is 19, 21, and 22 mg/g for NNB, TMB, and TEB. The modified bentonites retained 55% of their adsorption capacity after five regeneration cycles.</p>","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 4","pages":"e70061"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143732048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Remediation of vanadium(V)-contaminated groundwater by the Shewanella oneidensis MR-1, Fe₂O₃, and biochar composite.","authors":"Luyao Wang, Yang Zhang, Siming Chen, Yiming Jin, Baogang Zhang","doi":"10.1002/wer.70063","DOIUrl":"10.1002/wer.70063","url":null,"abstract":"<p><p>Vanadium, essential for steel production and energy storage, is increasingly found in groundwater due to extensive mining and industrial activities. Its high mobility and reactivity pose significant environmental risks. This study developed an Shewanella oneidensis MR-1- Fe₂O₃-biochar composite to enhance vanadium bioremediation. The composite exhibited strong vanadium resistance, achieving 92.5 ± 1.48% removal of pentavalent vanadium [V(V)] at 100 mg/l with an optimal biochar/Fe₂O₃ ratio of 10:1. Its efficiency was further assessed under varying pH, organic carbon levels, and V(V) concentrations. XPS analysis confirmed the presence of tetravalent vanadium [V (IV)] and divalent iron [Fe (II)], while FTIR spectroscopy identified functional groups (-OH, C=C, C=O) within the composite. These results suggest a synergistic removal mechanism involving complexation, dissimilatory iron reduction, and microbial V(V) reduction. This study provides a promising strategy for remediating V(V)-contaminated groundwater. PRACTITIONER POINTS: A novel composite consisted of Shewanella oneidensis MR-1, Fe₂O_3, and biochar was synthesized Complex promoted microbial life and increased resistance towards V(V) Complexation, Fe (II) oxidation, and bioreduction collectively contributed to V(V) removal.</p>","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 4","pages":"e70063"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143732050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical disinfection of secondary municipal wastewater effluents: Optimizing CT dose and tailing effects through high-intensity mixing.","authors":"Naghmeh Fallah, Katherine Bell, Ted Mao, Ronald Hofmann, Gabriela Ellen Barreto Bossoni, Domenico Santoro, Giuseppe Mele","doi":"10.1002/wer.70066","DOIUrl":"10.1002/wer.70066","url":null,"abstract":"&lt;p&gt;&lt;p&gt;This paper investigates the impact of average velocity gradient and mixing effects on secondary wastewater coliform inactivation kinetics using an innovative in-line treatment technology based on sodium hypochlorite as disinfecting agent. Experiments included both laboratory batch kinetic studies (as reference) as well as bench-scale pilot tests. The laboratory studies were carried out using a magnetically stirred vessel to simulate low-mixing conditions (Ḡ ≈ 1000 s&lt;sup&gt;-1&lt;/sup&gt; at 1 atm), while the bench-scale pilot tests employed a flow-through system consisting of two centrifugal pumps in series to simulate high average velocity gradients and intense mixing conditions (Ḡ ≈ 10,000 s&lt;sup&gt;-1&lt;/sup&gt; at 1.5 atm). In both cases, disinfectant demand and decay models for sodium hypochlorite were fitted against observed data using various expressions corresponding to different kinetic orders and subsequently incorporated into fecal inactivation kinetics via their integral CT expression. Experimental results showed a very remarkable and significant influence of high velocity gradient and mixing intensity on disinfection efficiency. While conventional batch kinetics indicated a 3-log reduction in fecal coliforms at concentration-time integral product (CT) of 16 (mg·min·L&lt;sup&gt;-1&lt;/sup&gt;), less than 1/10th of the CT dose (under comparable process conditions) were needed in the case of advanced disinfection with high average velocity gradient and mixing intensity. Using the experimental data collected in this study, a novel inactivation model was developed that uniquely incorporates the average velocity gradient Ḡ as explicitly kinetic parameter, enabling precise prediction of CT required for various mixing conditions to meet specific microbial treatment targets. To achieve an effluent total coliform concentration of 10 CFU per 100 mL, a CT of 48.5 mg·min·L&lt;sup&gt;-1&lt;/sup&gt; was required at a mixing intensity of Ḡ = 762 s&lt;sup&gt;-1&lt;/sup&gt;, while only 0.82 mg·min·L&lt;sup&gt;-1&lt;/sup&gt; was needed at Ḡ = 18,158 s&lt;sup&gt;-1&lt;/sup&gt;. Inactivation tailing was drastically reduced under high-mixing conditions by enhancing disinfectant penetration in the flocs shielding particle-associated coliforms. Furthermore, disinfection by-product (DBP) screening tests confirmed that enhanced inactivation under high-mixing conditions was achieved while also maintaining regulated DBP levels across all CT values. This integration of mixing effects in microbial inactivation kinetics marks a significant advancement over traditional disinfection design frameworks allowing the disinfection community to access a more refined approach for sizing and validation purposes. PRACTITIONER POINTS: Particle-associated coliforms are inactivated by hypochlorite under high mixing. A 3-log reduction of coliforms observed at more than 30 times lower CT under high mixing. High mixing and mild pressure can reduce chlorine dose and contact time significantly. Tailing effects are well mitigated by high mixing combined ","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 4","pages":"e70066"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11959521/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143754762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A data synthesis on air-water exchange flux of plasticizers of phthalates and organophosphates in surface water.","authors":"Minhao Wang, Haifei Zhang, Lei Han","doi":"10.1002/wer.70067","DOIUrl":"10.1002/wer.70067","url":null,"abstract":"<p><p>Microplastic pollution has become an emerging environmental issue in the past decades. Plasticizers are organic compounds applied during the manufacturing process and are of particular interests to researchers. Phthalate esters (PAEs) and organophosphate esters (OPEs) are two common types of plasticizers that have been found to be prevalent in water and the atmosphere. Investigating their air-water exchange process is crucial for understanding their sources and fate as pollutants. This study employs a systematic review and data synthesis to evaluate the air-water exchange and dry deposition flux of PAEs and OPEs on a global scale, aiming to identify the factors influencing their exchange process. Results showed that the air-water exchange and dry deposition flux vary among different types of plasticizers, and climatic conditions may also have impact on the air-water exchange flux. Future research is needed to explore more mechanisms related to the influencing factors. PRACTITIONER POINTS: The study presents a data synthesis of air-water exchange and dry deposition flux of plasticizers. Results indicate the sources and sinks of plasticizers on surface water, which helps to understand the consequence of plastic pollution. The air-water exchange and dry deposition flux of PAEs and OPEs vary due to different chemical properties and climatic conditions. Further research is needed to better understand the influencing factors of this process.</p>","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 4","pages":"e70067"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143804126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorescence characteristics of dissolved organic matter (DOM) in bottled drinking water of different countries: A potential risk to public health.","authors":"Nahin Mostofa Niloy, Mashura Shammi, Shafi M Tareq","doi":"10.1002/wer.70064","DOIUrl":"10.1002/wer.70064","url":null,"abstract":"<p><p>Bottled drinking water of numerous brands from different countries, including Bangladesh, Malaysia, Australia, India, Singapore, Norway, Japan, Vietnam, and Taiwan, were studied using three-dimensional fluorescence (excitation-emission matrix, EEM) spectroscopy and multivariate parallel factor analysis (PARAFAC) model. Fluorescent-dissolved organic matter (DOM) components such as microbial processed tyrosine-, fulvic acid (M)-, and tryptophan-like had maximum intensity/concentration at 70.8%, 16.7%, and 12.5% bottled drinking water samples, respectively. The total intensity of all fluorescing DOM components was minimum and maximum in one of the brands from Australia and Vietnam, respectively. Unlike in Japan, the concentrations of DOM components in bottled drinking water were comparable to or higher than groundwater, freshwater, and marine water in Bangladesh, Malaysia, India, and Taiwan. The concentration of Escherichia coli was quantified from its significant correlation equation with the microbial-processed tryptophan-like component. Apart from 60% and 20% of bottled water samples from Malaysia and Bangladesh, the remaining samples of studied countries were medium to very high-risk because of E. coli signatures. The adverse health impacts from previously identified over-acceptable-limit mineral concentrations in bottled drinking water are discussed. DOM components at such concentrations in bottled drinking water also strengthened doubts about the efficiency of conventional water treatment techniques and biofilm control. Economic indicators of the studied countries affirmed that willingness and proper management knowledge are necessary to ensure safe bottled drinking water besides budget and labor wages. PRACTITIONER POINTS: Higher protein-like components intensity than humic-like affirmed microbial abundance Risks for E. coli availability was medium to very high in maximum samples Adverse health impacts for overlimit Pb, Al, and PO₄ ^3- minerals in Bangladeshi brands Inefficiency of drinking water treatment techniques in DOM and biofilm control Importance of labor wage, willingness, and knowledge for drinking water treatment.</p>","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 4","pages":"e70064"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11972016/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143789047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing naphthenic acid attenuation in mesocosm wetlands: The role of temperature, plant species, and microbial communities.","authors":"Kaitlyn E Trepanier, Amy-Lynne Balaberda, Ian J Vander Meulen, Jason M E Ahad, Sara Correa-Garcia, Simon Morvan, Marie-Josée Bergeron, Dilini Atugala, Lisa Gieg, John V Headley, Étienne Yergeau, Christine Martineau, Dani Degenhardt","doi":"10.1002/wer.70048","DOIUrl":"10.1002/wer.70048","url":null,"abstract":"<p><p>Oil sands process-affected water (OSPW) is a by-product of bitumen extraction from oil sands surface mining in Alberta, Canada. A major group of organics in OSPW known as naphthenic acid fraction compounds (NAFCs) are of concern due to their persistence and toxicity. Constructed wetland treatment systems have emerged as potential biological treatment approaches for reducing NAFC concentrations within OSPW. In this study, greenhouse-scale mesocosms simulating a constructed wetland consisting of coarse sand tailings (CST) and OSPW were used to evaluate the ability of Scirpus microcarpus, Triglochin maritima, and unplanted controls to attenuate NAFCs under spring/fall and summer temperatures (10°C/5°C and 20°C/10°C day/night). Overall, in this mesocosm system, NAFC attenuation was similar regardless of different design parameters such as plant type, plant presence, and temperature. By the end of the study, NAFCs attenuation was 30% to 50% lower than the initial OSPW depending on plant species, plant presence, and temperature. The relative abundance of the acutely toxic O₂-NAFCs decreased over time, with an increase in the less toxic O₃, O₄, and SO₃ classes. Various hydrocarbon-degrading microbial families such as Comamonadaceae and Xanthobacteraceae were found to be dominant in OSPW, while cyanobacteria (Trichormus) were enriched in the CST. Principal component analysis indicated that only time led to distinct clusters for NAFC composition, while plant type, temperature, and time influenced the microbial communities. Shifts in microbial communities over time corresponded to shifts in NAFCs, possibly due to a decrease in toxicity with increased oxidation of NAFCs and/or an increase in available nutrients from a decrease in plant fitness in the planted mesocosms. PRACTITIONER POINTS: Constructed wetland mesocosms for NAFC attenuation from OSPW comparing three planted/unplanted conditions under two temperatures. Mesocosms had 30%-50% removal of total NAFCs, with a decrease in O₂-NAFCs and increase in O₃, O₄, and SO₃ classes. NAFC composition only shifted with time, while microbial communities were influenced by plant type, temperature, and time. Lack of difference in NAFC attenuation between treatments could indicate a high level of functional redundancy between the microbial communities.</p>","PeriodicalId":23621,"journal":{"name":"Water Environment Research","volume":"97 3","pages":"e70048"},"PeriodicalIF":2.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11867928/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143524719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}