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Barrena R, Vargas-García MDC, Catacora-Padilla P, Gea T, Abo Markeb A, Moral-Vico J, Sánchez A, Font X, Aspray TJ. Magnetite-based nanoparticles and nanocomposites for recovery of overloaded anaerobic digesters. BIORESOURCE TECHNOLOGY 2023; 372:128632. [PMID: 36657586 DOI: 10.1016/j.biortech.2023.128632] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 06/17/2023]
Abstract
The effect of magnetite nanoparticles and nanocomposites (magnetite nanoparticles impregnated into graphene oxide) supplement on the recovery of overloaded laboratory batch anaerobic reactors was assessed using two types of starting inoculum: anaerobic granular sludge (GS) and flocculent sludge (FS). Both nanomaterials recovered methane production at a dose of 0.27 g/L within 40 days in GS. Four doses of magnetite nanoparticles from 0.075 to 1 g/L recovered the process in FS systems between 30 and 50 days relaying on the dose. The presence of nanomaterials helped to reverse the effect of volatile fatty acids inhibition and enabled microbial communities to recover but also favoured the development of certain microorganisms over others. In GS reactors, the methanogenic population changed from being mostly acetoclastic (Methanothrix soehngenii) to being dominated by hydrogenotrophic species (Methanobacterium beijingense). Nanomaterial amendment may serve as a preventative measure or provide an effective remedial solution for system recovery following overloading.
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Affiliation(s)
- Raquel Barrena
- GICOM Research Group Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona Edifici Q, Carrer de les Sitges 08193 Bellaterra (Cerdanyola del Vallès), Barcelona, Spain.
| | - María Del Carmen Vargas-García
- Department of Biology and Geology, CITE II-B Universidad de Almería CEIMAR Marine Campus of International Excellence, 04120 Almería, Spain
| | - Paula Catacora-Padilla
- GICOM Research Group Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona Edifici Q, Carrer de les Sitges 08193 Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | - Teresa Gea
- GICOM Research Group Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona Edifici Q, Carrer de les Sitges 08193 Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | - Ahmad Abo Markeb
- GICOM Research Group Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona Edifici Q, Carrer de les Sitges 08193 Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | - Javier Moral-Vico
- GICOM Research Group Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona Edifici Q, Carrer de les Sitges 08193 Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | - Antoni Sánchez
- GICOM Research Group Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona Edifici Q, Carrer de les Sitges 08193 Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | - Xavier Font
- GICOM Research Group Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona Edifici Q, Carrer de les Sitges 08193 Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | - Thomas J Aspray
- School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, UK; Solidsense Ltd, Bearsden, East Dunbartonshire G61 3BA, Scotland, UK
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2
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Garrido-Baserba M, Barnosell I, Molinos-Senante M, Sedlak DL, Rabaey K, Schraa O, Verdaguer M, Rosso D, Poch M. The third route: A techno-economic evaluation of extreme water and wastewater decentralization. WATER RESEARCH 2022; 218:118408. [PMID: 35462258 DOI: 10.1016/j.watres.2022.118408] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 04/01/2022] [Accepted: 04/02/2022] [Indexed: 06/14/2023]
Abstract
Water systems need to become more locally robust and sustainable in view of increased population demands and supply uncertainties. Decentralized treatment is often assumed to have the potential to improve the technical, environmental, and economic performance of current technologies. The techno-economic feasibility of implementing independent building-scale decentralized systems combining rainwater harvesting, potable water production, and wastewater treatment and recycling was assessed for six main types of buildings ranging from single-family dwellings to high-rise buildings. Five different treatment layouts were evaluated under five different climatic conditions for each type of building. The layouts considered varying levels of source separation (i.e., black, grey, yellow, brown, and combined wastewater) using the corresponding toilet types (vacuum, urine-diverting, and conventional) and the appropriate pipes and pumping requirements. Our results indicate that the proposed layouts could satisfy 100% of the water demand for the three smallest buildings in all but the aridest climate conditions. For the three larger buildings, rainwater would offset annual water needs by approximately 74 to 100%. A comprehensive economic analysis considering CapEx and OpEx indicated that the cost of installing on-site water harvesting and recycling systems would increase the overall construction cost of multi-family buildings by around 6% and single-family dwellings by about 12%, with relatively low space requirements. For buildings or combined water systems with more than 300 people, the estimated total price of on-site water provision (including harvesting, treatment, recycling, and monitoring) ranged from $1.5/m3 to $2.7/m,3 which is considerably less than the typical tariffs collected by utilities in the United States and Western Europe. Where buildings can avoid the need to connect to centralized supplies for potable water and sewage disposal, water costs could be even lower. Urine-diversion has the potential to yield the least expensive solution but is the least well developed and had higher uncertainty in the cost analysis. More mature layouts (e.g., membrane bioreactors) exhibited less cost uncertainty and were economically competitive. Our analysis indicates that existing technologies can be used to create economically viable systems that greatly reduce demands on centralized utilities and, under some conditions, eliminate the need for centralized water supply or sewage collection.
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Affiliation(s)
| | - Irene Barnosell
- LEQUiA, Institute of the Environment, University of Girona, E-17071, Girona, Spain
| | - Maria Molinos-Senante
- Department of Hydraulic and Environmental Engineering, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile; Centro de Investigación para la Gestión Integrada del Riesgo de Desastres (CIGIDEN), Avda. Vicuña Mackenna, 4860 Santiago, Chile
| | - David L Sedlak
- Department of Civil and Environmental Engineering, University of California, 609 Davis Hall, Berkeley, CA 94720, USA
| | - Korneel Rabaey
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 90 0 0 Ghent, Belgium; Center for Advanced Process Technology for Urban Resource Recovery (CAPTURE), Coupure Links 653, 90 0 0 Ghent, Belgium
| | | | - Marta Verdaguer
- LEQUiA, Institute of the Environment, University of Girona, E-17071, Girona, Spain
| | - Diego Rosso
- Water-Energy Nexus Center, University of California, Irvine, CA 92697-2175, USA; Department of Civil and Environmental Engineering, University of California, 5200 Engineering Hall, Irvine, CA 92697, USA
| | - Manel Poch
- LEQUiA, Institute of the Environment, University of Girona, E-17071, Girona, Spain
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3
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Cecconet D, Mainardis M, Callegari A, Capodaglio AG. Psychrophilic treatment of municipal wastewater with a combined UASB/ASD system, and perspectives for improving urban WWTP sustainability. CHEMOSPHERE 2022; 297:134228. [PMID: 35271894 DOI: 10.1016/j.chemosphere.2022.134228] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/27/2022] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
According to new paradigms of urban wastewater management, energy savings and resources and energy recovery from sewage will assume an ever-increasing importance. Anaerobic processes, aside from being more energy efficient than conventional aerobic ones, are particularly suited to recover embedded organic energy, improving the overall energy balance of treatment processes, however, their performance is limited by low temperatures and slower kinetics. In this study, a pilot Upflow Anaerobic Sludge Blanket (UASB) reactor was operated to treat municipal wastewater at low temperature regime (16.5-18.5 °C) for 22 weeks, both as standalone process and combined with a sidestream anaerobic sludge digester. Process performance highlighted good system robustness, as proved by stable pH and volatile fatty acid/total alkaline buffer capacity ratio, even though observed methane yield was low. Observed COD and TSS removal efficiencies were in the ranges of 60-69% and 63-73%, respectively. Methane production ranged between 0.106 and 0.132 Nm3CH4/kgCODrem. An economic assessment was carried out to evaluate the feasibility and benefits of implementing UASB pre-treatment of municipal wastewater in existing conventional facilities (activated sludge and anaerobic sludge digestion), showing that significant energy demand reduction could be achieved for both biological secondary treatment and sludge management, leading to considerable operational economies, and possible positive economic returns within a short pay-back period (3-4 yrs).
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Affiliation(s)
- Daniele Cecconet
- Dipartimento di Ingegneria Civile e Architettura, Università Degli Studi di Pavia, Via Ferrata 3, 27100, Pavia, Italy
| | - Matia Mainardis
- Dipartimento Politecnico di Ingegneria e Architettura (DPIA), Università Degli Studi di Udine, Via Del Cotonificio 108, 33100, Udine, Italy
| | - Arianna Callegari
- Dipartimento di Ingegneria Civile e Architettura, Università Degli Studi di Pavia, Via Ferrata 3, 27100, Pavia, Italy
| | - Andrea G Capodaglio
- Dipartimento di Ingegneria Civile e Architettura, Università Degli Studi di Pavia, Via Ferrata 3, 27100, Pavia, Italy.
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Hu Y, Cai X, Du R, Yang Y, Rong C, Qin Y, Li YY. A review on anaerobic membrane bioreactors for enhanced valorization of urban organic wastes: Achievements, limitations, energy balance and future perspectives. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 820:153284. [PMID: 35066041 DOI: 10.1016/j.scitotenv.2022.153284] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/03/2022] [Accepted: 01/16/2022] [Indexed: 06/14/2023]
Abstract
Sustainable urban development is threatened by an impending energy crisis and large amounts of organic wastes generated from the municipal sector among others. Conventional waste management methods involve greenhouse gas (GHG) emission and limited resource recovery, thus necessitating advanced techniques to convert such wastes into bioenergy, bio-fertilizers and valuable-added products. Research and application experiences from different scale applications indicate that the anaerobic membrane bioreactor (AnMBR) process is a kind of high-rate anaerobic digester for urban organic wastes valorization including food waste and waste sludge, while the research status is still insufficiently summarized. Through compiling recent achievements and literature, this review will focus on the following aspects, including AnMBR treatment performance and membrane fouling, technical limitations, energy balance and techno-economic assessment as well as future perspectives. AnMBR can enhance organic wastes treatment via complete retention of functional microbes and suspended solids, and timely separation of products and potential inhibitory substances, thus improving digestion efficiency in terms of increased organics degradation rates, biogas production and process robustness at a low footprint. When handling high-solid organic wastes, membrane fouling and mass transfer issues can be the challenges limiting AnMBR applications to a wet-type digestion, thus countermeasures are required to pursue extended implementations. A conceptual framework is proposed by taking various organic wastes disposal and final productions (permeate, biogas and biosolids) utilization into consideration, which will contribute to the development of AnMBR-based waste-to-resource facilities towards sustainable waste management and more economic-environmental benefits output.
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Affiliation(s)
- Yisong Hu
- Key Lab of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Xuli Cai
- XAUAT UniSA An De College, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Runda Du
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Yuan Yang
- Key Lab of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Chao Rong
- Department of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan
| | - Yu Qin
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan; Department of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan.
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5
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Bashiri R, Allen B, Shamurad B, Pabst M, Curtis TP, Ofiţeru ID. Looking for lipases and lipolytic organisms in low-temperature anaerobic reactors treating domestic wastewater. WATER RESEARCH 2022; 212:118115. [PMID: 35092910 DOI: 10.1016/j.watres.2022.118115] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/22/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Poor lipid degradation limits low-temperature anaerobic treatment of domestic wastewater even when psychrophiles are used. We combined metagenomics and metaproteomics to find lipolytic bacteria and their potential, and actual, cold-adapted extracellular lipases in anaerobic membrane bioreactors treating domestic wastewater at 4 and 15 °C. Of the 40 recovered putative lipolytic metagenome-assembled genomes (MAGs), only three (Chlorobium, Desulfobacter, and Mycolicibacterium) were common and abundant (relative abundance ≥ 1%) in all reactors. Notably, some MAGs that represented aerobic autotrophs contained lipases. Therefore, we hypothesised that the lipases we found are not always associated with exogenous lipid degradation and can have other roles such as polyhydroxyalkanoates (PHA) accumulation/degradation and interference with the outer membranes of other bacteria. Metaproteomics did not provide sufficient proteome coverage for relatively lower abundant proteins such as lipases though the expression of fadL genes, long-chain fatty acid transporters, was confirmed for four genera (Dechloromonas, Azoarcus, Aeromonas and Sulfurimonas), none of which were recovered as putative lipolytic MAGs. Metaproteomics also confirmed the presence of 15 relatively abundant (≥ 1%) genera in all reactors, of which at least 6 can potentially accumulate lipid/polyhydroxyalkanoates. For most putative lipolytic MAGs, there was no statistically significant correlation between the read abundance and reactor conditions such as temperature, phase (biofilm and bulk liquid), and feed type (treated by ultraviolet light or not). Results obtained by metagenomics and metaproteomics did not confirm each other and extracellular lipases and lipolytic bacteria were not easily identifiable in the anaerobic membrane reactors used in this study. Further work is required to identify the true lipid degraders in these systems.
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Affiliation(s)
- Reihaneh Bashiri
- School of Engineering, Newcastle University, Newcastle-upon-Tyne, NE1 7RU, United Kingdom
| | - Ben Allen
- School of Engineering, Newcastle University, Newcastle-upon-Tyne, NE1 7RU, United Kingdom
| | - Burhan Shamurad
- School of Engineering, Newcastle University, Newcastle-upon-Tyne, NE1 7RU, United Kingdom
| | - Martin Pabst
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Thomas P Curtis
- School of Engineering, Newcastle University, Newcastle-upon-Tyne, NE1 7RU, United Kingdom
| | - Irina D Ofiţeru
- School of Engineering, Newcastle University, Newcastle-upon-Tyne, NE1 7RU, United Kingdom.
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6
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UASB Performance and Perspectives in Urban Wastewater Treatment at Sub-Mesophilic Operating Temperature. WATER 2022. [DOI: 10.3390/w14010115] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
UASBs present several advantages compared to conventional wastewater treatment processes, including relatively low construction cost facilities, low excess sludge production, plain operation and maintenance, energy generation in the form of biogas, robustness in terms of COD removal efficiency, pH stability, and recovery time. Although anaerobic treatment is possible at every temperature, colder climates lead to lower process performance and biogas production. These factors can be critical in determining the applicability and sustainability of this technology for the treatment of urban wastewater at low operating temperature. The purpose of this study is the performance evaluation of a pilot-scale (2.75 m3) UASB reactor for treatment of urban wastewater at sub-mesophilic temperature (25 °C), below the optimal range for the process, as related to biogas production and organic matter removal. The results show that, despite lower methane production and COD removal efficiency compared to operation under ideal conditions, a UASB can still achieve satisfactory performance, and although not sufficient to grant effluent discharge requirements, it may be used as a pretreatment step for carbon removal with some degree of energy recovery. Options for UASB pretreatment applications in municipal WWTPs are discussed.
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Kuroda K, Narihiro T, Nobu MK, Tobo A, Yamauchi M, Yamada M. Ecogenomics Reveals Microbial Metabolic Networks in a Psychrophilic Methanogenic Bioreactor Treating Soy Sauce Production Wastewater. Microbes Environ 2021; 36. [PMID: 34588388 PMCID: PMC8674449 DOI: 10.1264/jsme2.me21045] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
An ecogenomic analysis of the methanogenic microbial community in a laboratory-scale up-flow anaerobic sludge blanket (UASB) reactor treating soy sauce-processing wastewater revealed a synergistic metabolic network. Granular sludge samples were collected from the UASB reactor operated under psychrophilic (20°C) conditions with a COD removal rate >75%. A 16S rRNA gene amplicon sequencing-based microbial community analysis classified the major microbial taxa as Methanothrix, Methanobacterium, Pelotomaculaceae, Syntrophomonadaceae, Solidesulfovibrio, and members of the phyla Synergistota and Bacteroidota. Draft genomes of dominant microbial populations were recovered by metagenomic shotgun sequencing. Metagenomic- and metatranscriptomic-assisted metabolic reconstructions indicated that Synergistota- and Bacteroidota-related organisms play major roles in the degradation of amino acids. A metagenomic bin of the uncultured Bacteroidales 4484-276 clade encodes genes for proteins that may function in the catabolism of phenylalanine and tyrosine under microaerobic conditions. Syntrophomonadaceae and Pelotomaculaceae oxidize fatty acid byproducts presumably derived from the degradation of amino acids in syntrophic association with aceticlastic and hydrogenotrophic methanogen populations. Solidesulfovibrio organisms are responsible for the reduction of sulfite and may support the activity of hydrogenotrophic methanogens and other microbial populations by providing hydrogen and ammonia using nitrogen fixation-related proteins. Overall, functionally diverse anaerobic organisms unite to form a metabolic network that performs the complete degradation of amino acids in the psychrophilic methanogenic microbiota.
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Affiliation(s)
- Kyohei Kuroda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Takashi Narihiro
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Masaru K Nobu
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Atsushi Tobo
- Department of Urban Environmental Design and Engineering, National Institute of Technology, Kagoshima College
| | - Masahito Yamauchi
- Department of Urban Environmental Design and Engineering, National Institute of Technology, Kagoshima College
| | - Masayoshi Yamada
- Department of Urban Environmental Design and Engineering, National Institute of Technology, Kagoshima College
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