Water Science and Technology最新文献

Application of an anaerobic reactor for the treatment of sulfide-rich wastewater using biogas for H₂S removal. 应用厌氧反应器处理富含硫化物的废水，利用沼气去除 H2S。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-11-22 DOI: 10.2166/wst.2024.383

Takashi Onodera, Yasuyuki Takemura, Masataka Aoki, Kazuaki Syutsubo

{"title":"Application of an anaerobic reactor for the treatment of sulfide-rich wastewater using biogas for H2S removal.","authors":"Takashi Onodera, Yasuyuki Takemura, Masataka Aoki, Kazuaki Syutsubo","doi":"10.2166/wst.2024.383","DOIUrl":"https://doi.org/10.2166/wst.2024.383","url":null,"abstract":"Anaerobic treatment of sulfur-rich wastewater is challenging because sulfide greatly inhibits the activity of anaerobic microorganisms, especially methanogenic archaea. We developed an internal phase-separated reactor (IPSR) that removed sulfide prior to methanogenesis by gas stripping using biogas produced in the reactor. The IPSR was fed with synthetic wastewater containing a very high sulfide concentration of up to 6,000 mg S L-1 with a chemical oxygen demand (COD) of 30,000 mg L-1. The IPSR was operated at an organic loading rate of 5-12 kg COD m-3 day-1 at 35 °C. The results show that the sulfide concentration was reduced from 6,000 mg S L-1 in the influent to <700 mg S L-1 in the first-stage effluent. The second-stage effluent contained <400 mg S L-1. As a result of effective sulfide removal by its gas stripping function, the IPSR had a COD removal efficiency of >90% over the entire experimental period. High-throughput 16S rRNA gene sequencing revealed that the major anaerobic archaea were Methanobacterium and Methanosaeta, which are frequently found in high-rate anaerobic reactors. Thus, the IPSR maintains these microorganisms and achieves high-process performance even when fed wastewater with very high sulfide concentrations.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"3029-3040"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824451","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}

引用次数: 0

Domain adaptation through active learning strategies for anomaly classification in wastewater treatment plants. 通过主动学习策略对污水处理厂的异常分类进行领域适应。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-11-27 DOI: 10.2166/wst.2024.387

Francesca Bellamoli, Marco Vian, Mattia Di Iorio, Farid Melgani

{"title":"Domain adaptation through active learning strategies for anomaly classification in wastewater treatment plants.","authors":"Francesca Bellamoli, Marco Vian, Mattia Di Iorio, Farid Melgani","doi":"10.2166/wst.2024.387","DOIUrl":"https://doi.org/10.2166/wst.2024.387","url":null,"abstract":"The increasing use of intermittent aeration controllers in wastewater treatment plants (WWTPs) aims to reduce aeration costs via continuous ammonia and oxygen measurements but faces challenges in detecting sensor and process anomalies. Applying machine learning to this unbalanced, multivariate, multiclass classification challenge requires much data, difficult to obtain from a new plant. This study develops a machine learning algorithm to identify anomalies in intermittent aeration WWTPs, adaptable to new plants with limited data. Utilizing active learning, the method iteratively selects samples from the target domain to fine-tune a gradient-boosting model initially trained on data from 17 plants. Three sampling strategies were tested, with low probability and high entropy sampling proving effective in early adaptation, achieving an F2-score close to the optimal with minimal sample use. The objective is to deploy these models as decision support systems for WWTP management, providing a strategy for efficient model adaptation to new plants, and optimizing labeling efforts.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"3123-3138"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824452","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}

引用次数: 0

Hybrid modelling framework for ozonation and biological activated carbon in tertiary wastewater treatment. 废水三级处理中臭氧和生物活性炭的混合建模框架。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-11-20 DOI: 10.2166/wst.2024.379

Shalongo T Angula, John Okedi, Theo Harding, Giacomo Bellandi, David S Ikumi

{"title":"Hybrid modelling framework for ozonation and biological activated carbon in tertiary wastewater treatment.","authors":"Shalongo T Angula, John Okedi, Theo Harding, Giacomo Bellandi, David S Ikumi","doi":"10.2166/wst.2024.379","DOIUrl":"https://doi.org/10.2166/wst.2024.379","url":null,"abstract":"Despite water being a significant output of water and resource recovery facilities (WRRFs), tertiary wastewater treatment processes are often underrepresented in integrated WRRF models. This study critically reviews the approaches used in comprehensive models for ozone (O3) and biological activated carbon (BAC) operation units for wastewater tertiary treatment systems. The current models are characterised by limitations in the mechanisms that describe O3 disinfection and disinfection by-product formation, and BAC adsorption in multi-component solutes. Drawing from the insights from the current O3, BAC, and WRRF modelling approaches, we propose an integrated O3-BAC model suitable for simulating dissolved organic carbon (DOC) and micropollutants removal in the O3-BAC systems. We recommend a hybrid modelling approach in which data-driven models can be integrated to compensate for structural limitations in mechanistic models. The model is developed within the activated sludge model (ASM) framework for flexibility in coupling with other WRRF models and hence facilitates developing system-wide WRRF models for wastewater reclamation and reuse systems.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"3052-3075"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823471","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}

引用次数: 0

Impact of chemical oxygen demand to nitrogen ratio on ANAMMOX bacterial growth in an up-flow anaerobic sludge blanket reactor. 化学需氧量与氮比率对上流式厌氧污泥毯反应器中 ANAMMOX 细菌生长的影响。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-11-15 DOI: 10.2166/wst.2024.376

Sandile S Msimango, Mahmoud Nasr, Faizal Bux, Sheena Kumari

{"title":"Impact of chemical oxygen demand to nitrogen ratio on ANAMMOX bacterial growth in an up-flow anaerobic sludge blanket reactor.","authors":"Sandile S Msimango, Mahmoud Nasr, Faizal Bux, Sheena Kumari","doi":"10.2166/wst.2024.376","DOIUrl":"https://doi.org/10.2166/wst.2024.376","url":null,"abstract":"While several studies have investigated the effect of varying carbon-to-nitrogen (C/N) ratios on the ANAMMOX performance, there is still a research gap in illustrating the shift in 16S rRNA gene copy number and functional microbial population during operation. Hence, this study focuses on utilizing a reference gene and target functional genes to demonstrate the synergetic interaction between ANAMMOX, ammonia-oxidizing bacteria (AOB), and nitrite-oxidizing bacteria (NOB), using an up-flow anaerobic sludge blanket (UASB) under different C/N conditions. It was demonstrated that elevating the C/N ratio from 1.0 to 2.0 reduced the COD and NH4+-N removal efficiencies from 80.12 to 48.62% and from 88.99 to 72.59%, respectively. Based on the qPCR evaluation, at the C/N ratio of 1.5, the abundance of ANAMMOX, AOB, Nitrobacter, and Nitrospira was 2.52 × 106, 82, 5.39 × 103, and 12.98 × 103 copies/μL, respectively. However, with the further increase of C/N ratio to 2.0, their abundance was reduced to 1.09 × 106, 46, 0.98 × 103, and 3.47 × 103 copies/μL, respectively. The expression of hzo gene encoding for hydrazine dehydrogenase was 169-folds at C/N = 1 and almost inhibited at C/N = 2. The results of microbial population structure using 16S rRNA reverse transcriptase (RT)-qPCR technique depicted a competition between ANAMMOX and heterotrophic bacteria for the available substrate at higher C/N ratios.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"2978-2990"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823486","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}

引用次数: 0

Treated greywater as a novel water resource: The perspective of greywater treatment for reuse from a bibliometric analysis.

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-11-27 DOI: 10.2166/wst.2024.384

Diana Yánez, Lidia Carolina Espinoza, Ignacio Vargas, Julio Romero, María Jesús Aguirre, Roxana Arce, Esteban Quijada-Maldonado, Ricardo Abejon

{"title":"Treated greywater as a novel water resource: The perspective of greywater treatment for reuse from a bibliometric analysis.","authors":"Diana Yánez, Lidia Carolina Espinoza, Ignacio Vargas, Julio Romero, María Jesús Aguirre, Roxana Arce, Esteban Quijada-Maldonado, Ricardo Abejon","doi":"10.2166/wst.2024.384","DOIUrl":"https://doi.org/10.2166/wst.2024.384","url":null,"abstract":"The current global water crisis has prompted research into technologies that can reuse different water resources to mitigate water scarcity. The use of treated greywater can be proposed to provide additional water resources. By reusing this water in different applications, this water crisis can be mitigated at the local scale. This study presents a bibliometric analysis to assess the state of the art of greywater treatment and its reuse technologies. This analysis is based on the scientific literature published until 2023 in Scopus regarding greywater treatment and 1,024 documents were found. The results showed a clear exponential increase in the accumulated number of publications in this topic, which was spurred during the mid-1990s. The most prolific country was the United States, while China, the other typical scientific superpower in most fields, occupied the sixth position in the ranking. Environmental Sciences was the knowledge subject with more documents, followed by Engineering and Chemical Engineering. The bibliometric study was complemented using SciMAT to create bibliometric networks that represent the dynamic evolution of the themes. The most important themes were identified, among which three key points stand out: greywater characterization, technologies for greywater treatment, and water management, including the reuse of treated greywater.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"3076-3110"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823511","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}

引用次数: 0

Simulation-based process optimization of full-scale advanced wastewater treatment systems using powdered activated carbon. 使用粉末活性炭的全规模先进废水处理系统的基于仿真的工艺优化。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-11-21 DOI: 10.2166/wst.2024.382

Hana Atallah Al-Asad, Jens Alex, Janna Parniske, Tobias Morck

{"title":"Simulation-based process optimization of full-scale advanced wastewater treatment systems using powdered activated carbon.","authors":"Hana Atallah Al-Asad, Jens Alex, Janna Parniske, Tobias Morck","doi":"10.2166/wst.2024.382","DOIUrl":"https://doi.org/10.2166/wst.2024.382","url":null,"abstract":"This study extends a previously developed competitive modeling approach for predicting the adsorption of organic micropollutants (OMPs) on powdered activated carbon (PAC) in full-scale advanced wastewater treatment. The approach incorporates adsorption analysis for organic matter fractionation, assumes pseudo-first order kinetics and differentiates between fresh and partially loaded PAC through fraction segregation. Validation through full-scale measurement campaigns reveals successful model predictions of OMP removal, underestimating, however, diclofenac removals by 15-20%. Based on model testing, the impact of excess PAC return to the biological stage enhanced OMP removal, reaching up to 15% improvement for benzotriazole, carbamazepine and metoprolol, but no evident improvement of diclofenac removal. Intermittent PAC dosing revealed rapid process response, where organic matter concentration increased within 2 h after PAC cut-off. The simulation-based study demonstrated that during rain events, the overall OMP removal efficiency in the entire wastewater treatment plant was reduced by approximately 50% due to a shift of OMP concentration and a shortened hydraulic retention time in the biological and adsorption stages. Testing of various PAC dosing strategies revealed potential PAC savings of 10-15% compared to inflow-proportional dosing by using predefined OMP removal grades or maximum allowable effluent OMP concentrations as criteria for PAC dosing.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"3008-3028"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823494","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}

引用次数: 0

Factorial experiment to identify two-way interactions between temperature, harvesting period, hydraulic retention time, and light intensity that influence the biomass productivity and phosphorus removal efficiency of a microalgae-bacteria biofilm. 通过因子实验，确定温度、收割期、水力停留时间和光照强度之间的双向交互作用对微藻-细菌生物膜的生物量生产率和除磷效率的影响。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-11-09 DOI: 10.2166/wst.2024.367

Jacob Dean Watkins, Clayton Jack Lords, Abiela Meek Bradley, David Richard Cutler, Ronald Charles Sims

{"title":"Factorial experiment to identify two-way interactions between temperature, harvesting period, hydraulic retention time, and light intensity that influence the biomass productivity and phosphorus removal efficiency of a microalgae-bacteria biofilm.","authors":"Jacob Dean Watkins, Clayton Jack Lords, Abiela Meek Bradley, David Richard Cutler, Ronald Charles Sims","doi":"10.2166/wst.2024.367","DOIUrl":"https://doi.org/10.2166/wst.2024.367","url":null,"abstract":"Rotating algae biofilm reactors (RABRs) can reduce energy requirements for wastewater reclamation but require further optimization for implementation at water resource recovery facilities (WRRF). Optimizing RABR operation is challenging because conditions at WRRF change frequently, and disregarding interaction terms related to these changes can produce incorrect conclusions about RABR behavior. This study evaluated the two-way interaction and main effects of four factors on the biomass productivity and phosphorus removal efficiency of a microalgae-bacteria biofilm grown in municipal anaerobic digester centrate, with factor levels and operating conditions selected to mimic a pilot RABR at a WRRF in Utah. Two-way interactions harvesting period*light intensity (LI), harvesting period*temperature, and LI*hydraulic retention time (HRT) had significant effects on biomass productivity: at high temperature and low LI, highest biomass productivity was achieved with a 14-day harvesting period, but at medium temperature and high LI, highest biomass productivity was achieved with a 7-day harvesting period. At high HRT, highest biomass productivity occurred at low LI, but at low HRT, highest biomass productivity occurred at high LI. Phosphorus removal was strongly influenced by LI and occurred most rapidly during the first 2 days HRT, which suggests precipitation contributed significantly to phosphorus removal. These observations provide insight for further RABR optimization.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"2961-2977"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823467","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}

引用次数: 0

Reduction of blue and total water footprints per unit biomass yield of silage maize with grey water footprint input in subsurface drip irrigation. 通过地表下滴灌的灰色水足迹输入，减少青贮玉米单位生物量产量的蓝色水足迹和总水足迹。

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-11-19 DOI: 10.2166/wst.2024.380

Talip Cakmakci, Ustun Sahin

{"title":"Reduction of blue and total water footprints per unit biomass yield of silage maize with grey water footprint input in subsurface drip irrigation.","authors":"Talip Cakmakci, Ustun Sahin","doi":"10.2166/wst.2024.380","DOIUrl":"https://doi.org/10.2166/wst.2024.380","url":null,"abstract":"Reducing blue and total water footprint outputs in irrigated agriculture with greywater footprint input from irrigation with recycled wastewater is an issue that needs to be investigated in protecting freshwater resources by increasing water availability. Therefore, the effect of three different irrigation levels of recycled wastewater and freshwater in the subsurface drip irrigation (SSDI), surface drip irrigation (SDI), and furrow irrigation (FI) methods on the blue, green, grey, and total water footprints per unit yield of silage maize, which is widely produced worldwide and has high water consumption, was investigated with a 2-year field study. The blue and total water footprints per unit fresh and dry biomass yields in the SSDI were 1.20-1.23-fold lower than that in the SDI and 1.69-1.76-fold lower than that in the FI. Full wastewater irrigation provided the lowest blue, green, and total water footprints per unit yield across all methods. Full wastewater irrigation under SSDI provided the lowest total water footprint per unit fresh biomass yield, similar to the 33% deficit irrigation practice with wastewater. It was concluded that full irrigation with recycled wastewater as a greywater resource under SSDI may be the most suitable application for the sustainable management of scarce blue water resources.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"2991-3007"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823488","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}

引用次数: 0

Efficient degradation of tetracycline by Mn(III)-microbial complexes mediated by mnOx@ACF in sequencing batch reactors: performance, mechanism, and effect on microbial community structure.

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-12-02 DOI: 10.2166/wst.2024.390

Huo Zhou, Lixi Xiao, Yuwei Deng, Rongling Wang, Qiang Li, Yuxuan Ye, Xuanyuan Pei, Lei Sun, Yingzhou Zhang, Fei Pan

{"title":"Efficient degradation of tetracycline by Mn(III)-microbial complexes mediated by mnOx@ACF in sequencing batch reactors: performance, mechanism, and effect on microbial community structure.","authors":"Huo Zhou, Lixi Xiao, Yuwei Deng, Rongling Wang, Qiang Li, Yuxuan Ye, Xuanyuan Pei, Lei Sun, Yingzhou Zhang, Fei Pan","doi":"10.2166/wst.2024.390","DOIUrl":"https://doi.org/10.2166/wst.2024.390","url":null,"abstract":"Engineered nanomaterials are widely used in water and wastewater treatment processes, and minimizing their adverse effects on biological treatment processes in wastewater treatment plants has become the primary focus. In this study, activated carbon fiber (ACF)-loaded manganese oxide nanomaterials (MnOx@ACF) were synthesized. A small-scale sequencing batch reactor (SBR) was constructed to simulate the synergistic degradation of pollutants by nanomaterials and microorganisms and the effects of nanomaterials on the structure of the microbial community in a wastewater treatment plant. The MnOx@ACF exhibited efficient removal of pollutants (98.7% in 30 cycles) and chemical oxygen demand (COD 96.4% in 30 cycles) through the formation of Mn-microbial complexes and enhanced cycling between Mn(III) and Mn(II) over 30 operating cycles. Metagenome analysis results showed that the microbial population composition and functional abundance increased when the SBR was exposed to different dosages of MnOx@ACF for a long time, among which 0.2 g/L MnOx@ACF exhibited the highest stimulation and influence on the functional abundance of microorganisms, which showed optimum ecological effects.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"3111-3122"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824454","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}

引用次数: 0

Effects of thermal pretreatment on the anaerobic digestion characteristics of fruit waste liquids.

IF 2.5 4区环境科学与生态学

Water Science and Technology Pub Date : 2024-12-01 Epub Date: 2024-11-28 DOI: 10.2166/wst.2024.388

Haoran Sun, Hua Wang, Xinmin Zhang, Weihua Cheng, Xuyang Li

{"title":"Effects of thermal pretreatment on the anaerobic digestion characteristics of fruit waste liquids.","authors":"Haoran Sun, Hua Wang, Xinmin Zhang, Weihua Cheng, Xuyang Li","doi":"10.2166/wst.2024.388","DOIUrl":"https://doi.org/10.2166/wst.2024.388","url":null,"abstract":"Fruit waste is one of the main components of municipal waste. To study its potential and characteristics in anaerobic digestion, this study took fruit waste and its waste liquid as raw materials, investigate the influence of thermal pretreatment on the anaerobic digestion characteristics under 35 ± 17 °C. The anaerobic digestion materials were fruit waste liquid (group A1), fruit waste liquid after thermal pretreatment (group A2), fruit slurry (group A3), and the material of A2 and A3 mixed with municipal sludge (groups A4 and A5) has also been involved. The results showed that the thermal pretreatment is in favor of increasing the total gas production rate, which the waste liquid after thermal pretreatment (A2) was the highest one with 767.09 mL/gVS which 6.51% higher than A1; while it has not obviously influence on the total hydrogen production rate of waste liquid; the addition of municipal sludge increased the total methane production rate of fruit waste or its liquid. After thermal pretreatment, the pH of fruit waste was 0.37 lower than initial pH; VFAs and SCOD content were both increased, which are benefit for anaerobic digestion. In addition, the experimental data were verified by the modified Gompertz model.","PeriodicalId":23653,"journal":{"name":"Water Science and Technology","volume":"90 11","pages":"3041-3051"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824453","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}

引用次数: 0