1
|
Rocha ME, Lazarino TC, Oliveira G, Teixeira L, Marques M, Mangiavacchi N. Analysis of biogas production from sewage sludge combining BMP experimental assays and the ADM1 model. PeerJ 2024; 12:e16720. [PMID: 38239297 PMCID: PMC10795531 DOI: 10.7717/peerj.16720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 12/04/2023] [Indexed: 01/22/2024] Open
Abstract
The Anaerobic Digestion Model No. 1 (ADM1) was employed to simulate methane (CH4) production in an anaerobic reactor (AR), and the associated bench-scale biochemical methane potential (BMP) assay, having sewage sludge (SWS) from a municipal wastewater treatment plant (WWTP) as feedstock. The SWS presented the following physical-chemical characteristics: pH (7.4-7.6), alkalinity (2,382 ± 100 mg CaCO3 L-1), tCOD (21,903 ± 1,000 mg L-1), TOC (895 ± 100 mg L-1), TS, TVS, and VSS (2.0%, 1.1%, and 0.8%, respectively). The BMP assay was conducted in six replicates under anaerobic mesophilic conditions (37 ± 0.1°C) for 11 days with a CH4 yield registered of 137.6 ± 6.39 NmL CH4 or 124 ± 6.72 CH4 g-1 VS-1. When the results obtained with the BMP bench-scale reactors were compared to the output generated with computational data by the ADM1 model having as input data the same initial sewage tCOD, similar cumulative CH4 production curves were obtained, indicating the accuracy of the ADM1 model. This approach allowed the characterization of the sludge and estimation of its biogas production potential. The combination of BMP assays, experimental data, and ADM1 model simulations provided a framework for studying anaerobic digestion (AD) processes.
Collapse
Affiliation(s)
- Mariana Erthal Rocha
- Department of Mechanical Engineering, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
- Department of Sanitary and Environmental Engineering, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - Thais Carvalho Lazarino
- Department of Mechanical Engineering, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - Gabriel Oliveira
- Department of Mechanical Engineering, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - Lia Teixeira
- Department of Sanitary and Environmental Engineering, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - Marcia Marques
- Department of Sanitary and Environmental Engineering, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - Norberto Mangiavacchi
- Department of Mechanical Engineering, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| |
Collapse
|
2
|
Mo R, Guo W, Batstone D, Makinia J, Li Y. Modifications to the anaerobic digestion model no. 1 (ADM1) for enhanced understanding and application of the anaerobic treatment processes - A comprehensive review. WATER RESEARCH 2023; 244:120504. [PMID: 37634455 DOI: 10.1016/j.watres.2023.120504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 08/29/2023]
Abstract
Anaerobic digestion (AD) is a promising method for the recovery of resources and energy from organic wastes. Correspondingly, AD modelling has also been developed in recent years. The International Water Association (IWA) Anaerobic Digestion Model No. 1 (ADM1) is currently the most commonly used structured AD model. However, as substrates become more complex and our understanding of the AD mechanism grows, both systematic and specific modifications have been applied to the ADM1. Modified models have provided a diverse range of application besides AD processes, such as fermentation and biogas upgrading processes. This paper reviews research on the modification of the ADM1, with a particular focus on processes, kinetics, stoichiometry and parameters, which are the major elements of the model. The paper begins with a brief introduction to the ADM1, followed by a summary of modifications, including extensions to the model structure, modifications to kinetics (including inhibition functions) and stoichiometry, as well as simplifications to the model. The paper also covers kinetic parameter estimation and validation of the model, as well as practical applications of the model to a variety of scenarios. The review highlights the need for improvements in simulating AD and biogas upgrading processes, as well as the lack of full-scale applications to other substrates besides sludge (such as food waste and agricultural waste). Future research directions are suggested for model development based on detailed understanding of the anaerobic treatment mechanisms, and the need to recover of valuable products.
Collapse
Affiliation(s)
- Rongrong Mo
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Wenjie Guo
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Damien Batstone
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jacek Makinia
- Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Narutowicza Street 11/12, Gdansk 80-233, Poland
| | - Yongmei Li
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| |
Collapse
|
3
|
Sanchis-Perucho P, Aguado D, Ferrer J, Seco A, Robles Á. Direct Membrane Filtration of Municipal Wastewater: Studying the Most Suitable Conditions for Minimizing Fouling Rate in Commercial Porous Membranes at Demonstration Scale. MEMBRANES 2023; 13:membranes13010099. [PMID: 36676906 PMCID: PMC9866899 DOI: 10.3390/membranes13010099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/03/2023] [Accepted: 01/10/2023] [Indexed: 05/12/2023]
Abstract
This study aimed to evaluate the feasibility of applying a commercial porous membrane to direct filtration of municipal wastewater. The effects of membrane pore size (MF and UF), treated influent (raw wastewater and the primary settler effluent of a municipal wastewater treatment plant) and operating solids concentration (about 1 and 2.6 g L-1) were evaluated on a demonstration plant. Filtration periods of 2-8 h were achieved when using the MF membrane, while these increased to 34-69 days with the UF membrane. This wide difference was due to severe fouling when operating the MF membrane, which was dramatically reduced by the UF membrane. Use of raw wastewater and higher solids concentration showed a significant benefit in the filtration performance when using the UF module. The physical fouling control strategies tested (air sparging and backwashing) proved to be ineffective in controlling UF membrane fouling, although these strategies had a significant impact on MF membrane fouling, extending the operating period from some hours to 5-6 days. The fouling evaluation showed that a cake layer seemed to be the predominant reversible fouling mechanism during each independent filtration cycle. However, as continuous filtration advanced, a large accumulation of irreversible fouling appeared, which could have been related to intermediate/complete pore blocking in the case of the MF membrane, while it could have been produced by standard pore blocking in the case of the UF membrane. Organic matter represented more than 70% of this irreversible fouling in all the experimental conditions evaluated.
Collapse
Affiliation(s)
- Pau Sanchis-Perucho
- CALAGUA–Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, 46100 Burjassot, Spain
- Correspondence:
| | - Daniel Aguado
- CALAGUA–Unidad Mixta UV-UPV, Institut Universitari d’Investigació d’Enginyeria de l’Aigua i Medi Ambient–IIAMA, Universitat Politècnica de Valencia, 46022 Valencia, Spain
| | - José Ferrer
- CALAGUA–Unidad Mixta UV-UPV, Institut Universitari d’Investigació d’Enginyeria de l’Aigua i Medi Ambient–IIAMA, Universitat Politècnica de Valencia, 46022 Valencia, Spain
| | - Aurora Seco
- CALAGUA–Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, 46100 Burjassot, Spain
| | - Ángel Robles
- CALAGUA–Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, 46100 Burjassot, Spain
| |
Collapse
|
4
|
Micro-Aerobic Pre-Treatment vs. Thermal Pre-Treatment of Waste Activated Sludge for Its Subsequent Anaerobic Digestion in Semi-Continuous Digesters: A Comparative Study. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8100565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This article investigates methane production, organic matter removal, and energy by comparing micro-aerobic pre-treatment and thermal pre-treatment of waste-activated sludge (WAS). For micro-aerobic pre-treatment, WAS was pre-treated at 0.35 vvm (volume of air per volume of medium per minute) for 48 h. The data showed over a 30% increase in soluble Chemical Oxygen Demand (COD) and soluble proteins when this pre-treatment was applied. Then, the micro-aerobically pre-treated sludge was mixed with primary sludge and anaerobically digested in semi-continuous digesters with Hydraulic Retention Times (HRT) of 20, 15, and 10 days at 35 °C. We used two digesters as a control: one fed with a mixture of primary sludge (PS) and raw WAS; another fed with a mixture of PS and thermally pre-treated WAS. The results showed a better performance for the digester fed with micro-aerobically pre-treated sludge than the other two at all the HRT tested. The better performance is because of the solubilization of particulate organic matter, as shown at the reactor outlet. Energy consumption analysis showed that micro-aerobic pre-treatment required 32% more energy in a year than thermal pre-treatment. However, if sludge is pre-thickened in a similar way as performed for thermal pre-treatment, then the energy demand required by micro-aerobic pre-treatment is reduced by 41% concerning the thermal pre-treatment; nevertheless, more studies should be performed to verify that methane production and solid reduction advantages are maintained.
Collapse
|
5
|
Sanchis-Perucho P, Aguado D, Ferrer J, Seco A, Robles Á. Evaluating the Feasibility of Employing Dynamic Membranes for the Direct Filtration of Municipal Wastewater. MEMBRANES 2022; 12:1013. [PMID: 36295772 PMCID: PMC9611946 DOI: 10.3390/membranes12101013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/13/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
The aim of this study was to assess the feasibility of using dynamic membranes for direct filtration of municipal wastewater. The influence of different alternative supporting materials (one or two layers of flat open monofilament woven polyamide meshes with 1 or 5 µm of pore size) was studied. A stable short-term self-forming DM was achieved (from some hours to 3 days) regardless of the supporting material used, producing relatively similar permeate qualities (total suspended solids, chemical oxygen demand, total nitrogen, total phosphorous and turbidity of 67-88 mg L-1, 155-186 mg L-1, 48.7-50.4 mg L-1, 4.7-4.9 mg L-1, and 167-174 NTU, respectively). A DM permeability loss rate of from 5.21 to 10.03 LMH bar-1 day-1 was obtained, which depended on the supporting material used. Unfortunately, the preliminary energy, carbon footprint, and economic evaluations performed showed that although DMs obtain higher pollutant captures than conventional treatments (primary settler), the benefits are not enough to justify their use for treating average municipal wastewater. However, this alternative scheme could be suitable for treating higher-loaded MWW with a higher fraction of organic matter in the non-settleable solids.
Collapse
Affiliation(s)
- Pau Sanchis-Perucho
- CALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, 46100 Burjassot, Spain
| | - Daniel Aguado
- CALAGUA—Unidad Mixta UV-UPV, Institut Universitari d’Investigació d’Enginyeria de l’Aigua i Medi Ambient–IIAMA, Universitat Politècnica de Valencia, 46022 Valencia, Spain
| | - José Ferrer
- CALAGUA—Unidad Mixta UV-UPV, Institut Universitari d’Investigació d’Enginyeria de l’Aigua i Medi Ambient–IIAMA, Universitat Politècnica de Valencia, 46022 Valencia, Spain
| | - Aurora Seco
- CALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, 46100 Burjassot, Spain
| | - Ángel Robles
- CALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, 46100 Burjassot, Spain
| |
Collapse
|
6
|
Donoso-Bravo A, Sadino-Riquelme MC, Valdebenito-Rolack E, Paulet D, Gómez D, Hansen F. Comprehensive ADM1 Extensions to Tackle Some Operational and Metabolic Aspects in Anaerobic Digestion. Microorganisms 2022; 10:microorganisms10050948. [PMID: 35630393 PMCID: PMC9143495 DOI: 10.3390/microorganisms10050948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 02/04/2023] Open
Abstract
Modelling in anaerobic digestion will play a crucial role as a tool for smart monitoring and supervision of the process performance and stability. By far, the Anaerobic Digestion Model No. 1 (ADM1) has been the most recognized and exploited model to represent this process. This study aims to propose simple extensions for the ADM1 model to tackle some overlooked operational and metabolic aspects. Extensions for the discontinuous feeding process, the reduction of the active working volume, the transport of the soluble compound from the bulk to the cell interior, and biomass acclimation are presented in this study. The model extensions are included by a change in the mass balance of the process in batch and continuous operation, the incorporation of a transfer equation governed by the gradient between the extra- and intra- cellular concentration, and a saturation-type function where the time has an explicit influence on the kinetic parameters, respectively. By adding minimal complexity to the existing ADM1, the incorporation of these phenomena may help to understand some underlying process issues that remain unexplained by the current model structure, broadening the scope of the model for control and monitoring industrial applications.
Collapse
Affiliation(s)
- Andrés Donoso-Bravo
- ProCycla SpA, Camino Fundo El Junco SN, Melipilla 9580000, Chile; (M.C.S.-R.); (E.V.-R.); (D.P.); (D.G.); (F.H.)
- ProCycla SL, Carretera Pont de Vilomara 140, 2-1, 08241 Manresa, Spain
- Department of Chemical Engineering, Universidad Técnica Federico Santa Maria, Valparaíso 2390123, Chile
- Correspondence:
| | - María Constanza Sadino-Riquelme
- ProCycla SpA, Camino Fundo El Junco SN, Melipilla 9580000, Chile; (M.C.S.-R.); (E.V.-R.); (D.P.); (D.G.); (F.H.)
- ProCycla SL, Carretera Pont de Vilomara 140, 2-1, 08241 Manresa, Spain
| | - Emky Valdebenito-Rolack
- ProCycla SpA, Camino Fundo El Junco SN, Melipilla 9580000, Chile; (M.C.S.-R.); (E.V.-R.); (D.P.); (D.G.); (F.H.)
- ProCycla SL, Carretera Pont de Vilomara 140, 2-1, 08241 Manresa, Spain
- Aroma SpA, Camino Fundo El Junco SN, Melipilla 9580000, Chile
| | - David Paulet
- ProCycla SpA, Camino Fundo El Junco SN, Melipilla 9580000, Chile; (M.C.S.-R.); (E.V.-R.); (D.P.); (D.G.); (F.H.)
- ProCycla SL, Carretera Pont de Vilomara 140, 2-1, 08241 Manresa, Spain
| | - Daniel Gómez
- ProCycla SpA, Camino Fundo El Junco SN, Melipilla 9580000, Chile; (M.C.S.-R.); (E.V.-R.); (D.P.); (D.G.); (F.H.)
- ProCycla SL, Carretera Pont de Vilomara 140, 2-1, 08241 Manresa, Spain
| | - Felipe Hansen
- ProCycla SpA, Camino Fundo El Junco SN, Melipilla 9580000, Chile; (M.C.S.-R.); (E.V.-R.); (D.P.); (D.G.); (F.H.)
- ProCycla SL, Carretera Pont de Vilomara 140, 2-1, 08241 Manresa, Spain
- Aroma SpA, Camino Fundo El Junco SN, Melipilla 9580000, Chile
| |
Collapse
|
7
|
Poblete IBS, Araújo ODQF, de Medeiros JL. Sewage-water treatment with bio-energy production and carbon capture and storage. CHEMOSPHERE 2022; 286:131763. [PMID: 34352552 DOI: 10.1016/j.chemosphere.2021.131763] [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: 11/30/2020] [Revised: 07/25/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Typical large-scale sewage-water treatments consume energy, occupy space and are unprofitable. This work evaluates a conceivable two-staged sewage-water treatment at 40,000 m3/d of sewage-water with sewage-sludge (totaling 10kgCOD/m3) that becomes a profitable bioenergy producer exporting reusable water and electricity, while promoting carbon capture. The first stage comprises microbial anaerobic digesters reducing the chemical oxygen demand (COD) by 95% and producing 60%mol methane biogas. The effluent waters enter the subsequent aerobic stage comprising microbial air-fed digesters that extend COD reduction to 99.7%. To simulate the process, up-to-date anaerobic/aerobic digester models were implemented. A biogas-combined-cycle power plant with/without post-combustion carbon capture is designed to match the biogas production, supplying electricity to the process and to the grid. Results comprehend electricity exportation of 13.21 MW (7.92 kWh/tReusable-Water) with -9.957tCO2/h of negative carbon emission (-0.6 kgCO2-Emitted/kgCOD-Removed). The biogas-combined-cycle without carbon capture achieves 21.08 MW of power exportation, while a 37.3% energy penalty arises if carbon capture is implemented. Configurations with/without carbon capture reach feasibility at 125 USD/MWh of electricity price, with respective net present values of 6.86 and 85.07 MMUSD and respective payback-times of 39 and 12 years. These results demonstrate that large-scale sewage-water treatment coupled to biogas-fired combined-cycles and carbon capture can achieve economically feasible bioenergy production with negative carbon emissions.
Collapse
Affiliation(s)
- Israel Bernardo S Poblete
- Escola de Química, Federal University of Rio de Janeiro, CT, E, Ilha do Fundão, Rio de Janeiro, RJ, 21941-909, Brazil
| | - Ofélia de Queiroz F Araújo
- Escola de Química, Federal University of Rio de Janeiro, CT, E, Ilha do Fundão, Rio de Janeiro, RJ, 21941-909, Brazil
| | - José Luiz de Medeiros
- Escola de Química, Federal University of Rio de Janeiro, CT, E, Ilha do Fundão, Rio de Janeiro, RJ, 21941-909, Brazil.
| |
Collapse
|
8
|
Donoso-Bravo A, Toledo-Alarcón J, Ortega V, Barría V, Lesty Y, Fontana J, Bossche HV. New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:2530-2540. [PMID: 34810329 DOI: 10.2166/wst.2021.422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Co-digestion of thermally pretreated sewage sludge with food waste is an innovative strategy that could improve the balance and availability of nutrients needed to increase the efficiency of anaerobic digestion in terms of biogas production. In this context, the aim of this research was to evaluate the impact of different proportions of sewage sludge/food waste in laboratory- and pilot-scale reactors. Special focus was placed on the impact of the variability of food waste composition on the behaviour of the pilot digester. Our results show that by adding 40% of co-substrate, a higher biogas production was possible during laboratory operation. Interestingly, using a co-substrate of variable composition had no negative impact on the reactor's stability at pilot-scale, promoting an increase in biogas production through a more efficient use of organic matter. In both the lab and pilot experiences there was an impact on the amount of nitrogen in the digestate compared to digester operating in monodigestion. This impact is more significant as the proportion of co-substrate rises. Overall, our results show that co-digestion of thermally pretreated sewage sludge with food waste allows better management of food waste, especially when their composition is variable.
Collapse
Affiliation(s)
- Andrés Donoso-Bravo
- Cetaqua, Centro Tecnológico del Agua, Los Pozos 7340 Santiago, Chile E-mail: ; Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, Avenida Vicuña, Mackenna 3939 Santiago, Chile
| | - Javiera Toledo-Alarcón
- Cetaqua, Centro Tecnológico del Agua, Los Pozos 7340 Santiago, Chile E-mail: ; Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso. Av. Brasil 2085 Valparaíso, Chile
| | - Valentina Ortega
- Cetaqua, Centro Tecnológico del Agua, Los Pozos 7340 Santiago, Chile E-mail:
| | - Valeria Barría
- Cetaqua, Centro Tecnológico del Agua, Los Pozos 7340 Santiago, Chile E-mail:
| | - Yves Lesty
- Aguas Andinas, Gerencia Economía Circular, Presidente Balmaceda 1398 Santiago, Chile
| | - Jordi Fontana
- EDAM Limitada, Alonso de Córdova 5151 Oficina 901, Santiago, Chile
| | | |
Collapse
|
9
|
Enhancement of Methanogenic Activity in Volumetrically Undersized Reactor by Mesophilic Co-Digestion of Sewage Sludge and Aqueous Residue. SUSTAINABILITY 2021. [DOI: 10.3390/su13147728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To date, energy recovery from biological sewage sludge (BSS) by anaerobic digestion has been very popular. However, it can often happen that anaerobic reactors are volumetrically undersized, thus reducing performance in terms of biogas production. A continuous-flow pilot-scale plant was used to investigate, for the first time, the effects of mesophilic anaerobic co-digestion (MACoD) of sewage sludge and aqueous residue (AR) from a biosolids treatment plant (BTP) on methanogenic activity under low hydraulic retention time (HRT) conditions (to simulate the undersizing of the reactor). The results showed that the digestate is always more rapidly biodegradable than the matrices fed, while particulate COD hydrolyzed (12 ± 1.3%) is independent of the quantity of AR dosed. Feeding over 35% of soluble OLR, the total VFAs in the system strongly decreased, despite the low HRT. In correspondence with higher dosages of AR, the percentage of CH4 increased up to 77–78% and the CO2 CH4−1 ratio decreased to 0.25 ± 0.2. Specific methane production increased from 0.09 ± 0.01 m3CH4 kgCODremoved−1 with BSS alone to 0.28 ± 0.01 m3CH4CH4 kgCODremoved−1 in the case of BSS co-digested with AR. Moreover, co-digestion with AR from a BTP allowed continuous specific methanogenic activity to be enhanced from 1.76 ± 0.02 m3CH4 tVSS−1 d−1 to 6.48 ± 0.88 m3CH4 tVSS−1 d−1. Therefore, the MACoD of BSS and AR from a BTP could be a good solution to enhance methanogenic activity in a volumetrically undersized anaerobic digester with reduced HRT.
Collapse
|
10
|
Serna-García R, Mora-Sánchez JF, Sanchis-Perucho P, Bouzas A, Seco A. Anaerobic membrane bioreactor (AnMBR) scale-up from laboratory to pilot-scale for microalgae and primary sludge co-digestion: Biological and filtration assessment. BIORESOURCE TECHNOLOGY 2020; 316:123930. [PMID: 32763806 DOI: 10.1016/j.biortech.2020.123930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/22/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
This research work proposes the scale-up evaluation in terms of biological and filtration performance from laboratory to pilot-scale of an anaerobic membrane bioreactor (AnMBR) co-digesting raw microalgae and primary sludge. Best operating conditions for this scale-up were energetically and economically assessed based on laboratory results. Economic balance showed 3% higher annual costs when operating a reactor at 100 d solids retention time (SRT) compared to 70 d SRT. Energetic balance showed a 5.5-fold increase in heat demand working at thermophilic temperature comparing to mesophilic. The AnMBR operating conditions were set at 70 d SRT and 35 °C. The pilot-scale and lab-scale co-digesters performed similarly in terms of biogas production and system stability. 154 mLbiogas·d-1·L-1reactor were produced at pilot-scale, corresponding to methane yield of 215 mLCH4·gCODinf-1. AnMBR filtration at both laboratory and pilot-scale showed stability working at permeate fluxes of 4.2-5.8 L·m-2·h-1.
Collapse
Affiliation(s)
- R Serna-García
- CALAGUA, Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, Valencia, Spain.
| | - J F Mora-Sánchez
- CALAGUA, Unidad Mixta UV-UPV, Institut Universitari d'Investigació d'Enginyeria de l'Aigua i Medi Ambient, IIAMA, Universitat Politècnica de Valencia, Camí de Vera s/n, 46022 Valencia, Spain
| | - P Sanchis-Perucho
- CALAGUA, Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, Valencia, Spain
| | - A Bouzas
- CALAGUA, Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, Valencia, Spain
| | - A Seco
- CALAGUA, Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, Valencia, Spain
| |
Collapse
|