{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T02:53:07Z","timestamp":1771037587859,"version":"3.50.1"},"reference-count":81,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2023,2,8]],"date-time":"2023-02-08T00:00:00Z","timestamp":1675814400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["UIDP\/50009\/2020-FCT"],"award-info":[{"award-number":["UIDP\/50009\/2020-FCT"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["UIDB\/50009\/2020-FCT"],"award-info":[{"award-number":["UIDB\/50009\/2020-FCT"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clean Technol."],"abstract":"<jats:p>The valorization of bio-waste as a resource for green energy production will be beneficial at a social, economic, and environmental level in different regions. The scope of this research is to develop the energetic valorization of the bio-waste fraction from municipal solid waste, to produce biogas from the anaerobic digestion process and electricity in a biogas CHP process, to increase the penetration of renewables in the electricity production system, with an application of these technologies on islands instead of these waste fractions being transported to other regions. The methodologies developed included: 1. Identification and mapping of resources; 2. State-of-the-art of bio-waste parameters and process solutions; 3. Pilot initiative for separation, collection, and analysis of food waste fractions; 4. Development of process solutions according to resources and needs; 5. Determination of investment, production costs, and revenues of the solution created. The case study selected was Porto Santo Island, with the potential to reduce maritime transportation costs of these undifferentiated waste fractions to Madeira Island and contribute to developing an innovative solution for the energetic valorization of bio-waste, including the participation of the local community. The results demonstrated a production of 272,221 m3 of biogas for use as fuel in a cogeneration unit to transform chemical energy into electrical and thermal energies. Furthermore, the self-consumption of the cogeneration unit is 25% of the total electricity produced and 29% of the total thermal energy produced. In conclusion, this research and solution is in compliance with PNEC, the EU Green Deal, and the European Directive 2018\/851, which will make mandatory from 2024: the selective collection of bio-waste, 60% by weight of urban waste to be recycled by 2030, and only 10% of waste to be landfilled by 2035.<\/jats:p>","DOI":"10.3390\/cleantechnol5010014","type":"journal-article","created":{"date-parts":[[2023,2,9]],"date-time":"2023-02-09T02:55:54Z","timestamp":1675911354000},"page":"233-258","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Energetic Valorization of Bio-Waste from Municipal Solid Waste in Porto Santo Island"],"prefix":"10.3390","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2203-6560","authenticated-orcid":false,"given":"Fab\u00edola","family":"Pereira","sequence":"first","affiliation":[{"name":"MIT Portugal Sustainable Energy Systems, Instituto Superior T\u00e9cnico, Universidade T\u00e9cnica de Lisboa, IN+ Center for Innovation, Technology and Policy Research, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7532-3993","authenticated-orcid":false,"given":"Carlos","family":"Silva","sequence":"additional","affiliation":[{"name":"MIT Portugal Sustainable Energy Systems, Instituto Superior T\u00e9cnico, Universidade T\u00e9cnica de Lisboa, IN+ Center for Innovation, Technology and Policy Research, 1049-001 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,8]]},"reference":[{"key":"ref_1","unstructured":"(2011). General Regime for Waste Management, Decree-Law n.\u00ba 73\/2011, Di\u00e1rio da Rep\u00fablica N.\u00ba 116\/2011, S\u00e9rie I, 17 June 2011, Minist\u00e9rio da Economia e do Emprego."},{"key":"ref_2","unstructured":"(2008). European Waste Framework Directive 2008\/98\/EC of the European Parliament and the Council on Waste, 19 November 2008, European Parliament and of the Council."},{"key":"ref_3","unstructured":"(2020). The Strategic Plan for Municipal Waste, PERSU 2020, Data Europa EU. Approved by Legal Ordinance No 187-A\/2014, 17 September 2020."},{"key":"ref_4","unstructured":"(2021). The Strategic Plan for Solid Urban Waste, PERSU 2020+, Data Europa EU."},{"key":"ref_5","unstructured":"(2018). European Directive 2018\/851 of the European Parliament and the Council, 30 May 2018, European Parliament and of the Council."},{"key":"ref_6","unstructured":"(2023, January 05). Biorres\u00edduos, Secretaria de Estado do Ambiente, Lisbon, Portugal. Available online: https:\/\/eco.nomia.pt\/contents\/documentacao\/2020-orientacoes-biorresiduos-v1.pdf."},{"key":"ref_7","unstructured":"(2023, January 06). Urban Waste Data, Ag\u00eancia Portuguesa do Ambiente, APA, Portugal. Available online: https:\/\/apambiente.pt\/index.php\/residuos\/dados-sobre-residuos-urbanos."},{"key":"ref_8","unstructured":"(2019). National Energy and Climate Plan, PNEC 2030, PENC."},{"key":"ref_9","unstructured":"Fetting, C. (2020). The European Green Deal, ESDN Office. ESDN Report."},{"key":"ref_10","unstructured":"(2023, January 05). The Waste Management Plan for Madeira\u2014PERRAM, approved in 1999. Madeira Island, Portugal. Available online: https:\/\/ec.europa.eu\/environment\/pdf\/waste\/framework\/facsheets%20and%20roadmaps\/Roadmap_Portugal.pdf."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"115566","DOI":"10.1016\/j.jenvman.2022.115566","article-title":"The advantages of co-digestion of vegetable oil industry by-products and sewage sludge: Biogas production potential, kinetic analysis and digestate valorisation","volume":"318","author":"Zirngast","year":"2022","journal-title":"J. Environ. Manag."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1165","DOI":"10.1002\/bbb.2396","article-title":"Characterization of lignocellulosic crop residues for potential biogas production in Zimbabwe","volume":"16","author":"Kamusoko","year":"2022","journal-title":"Biofuels Bioprod. Biorefin."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1194","DOI":"10.1016\/j.renene.2022.06.106","article-title":"The effects of micro-aeration on semi-continued anaerobic digestion of corn straw with increasing organic loading rates","volume":"195","author":"Zhu","year":"2022","journal-title":"Renew. Energy"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"101062","DOI":"10.1016\/j.biteb.2022.101062","article-title":"Effect of rice winery wastewater as a co-substrate to enhance anaerobic digestion of molasses for methane production","volume":"18","author":"Khan","year":"2022","journal-title":"Bioresour. Technol. Rep."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"126970","DOI":"10.1016\/j.biortech.2022.126970","article-title":"Dynamic simulation and optimization of anaerobic digestion processes using MATLAB","volume":"351","author":"Ganeshan","year":"2022","journal-title":"Bioresour. Technol."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"122928","DOI":"10.1016\/j.fuel.2021.122928","article-title":"Emerging trends and nanotechnology advances for sustainable biogas production from lignocellulosic waste biomass: A critical review","volume":"312","author":"Govarthanan","year":"2022","journal-title":"Fuel"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"507","DOI":"10.1002\/jsfa.9315","article-title":"A comprehensive review of anaerobic digestion of organic solid wastes in relation to microbial community and enhancement process","volume":"99","author":"Wang","year":"2019","journal-title":"J. Sci. Food Agric."},{"key":"ref_18","unstructured":"Themelis, N.J., and Verma, S. (2004). The Better Option: Anaerobic Digestion of Organic Waste in MSW, Waste Management World."},{"key":"ref_19","unstructured":"Ostrem, K., and Themelis, N.J. (2004). Greening Waste: Anaerobic Digestion for Treating the Organic Fraction of Municipal Solid Wastes, Columbia University."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Wo, D., Bi, G., Li, L., Kong, X., Jiang, E., and Xie, J. (2022). Iron-fortified Anaerobic Co-digestion Performance of Kitchen Waste and Pennisetum Hybrid. Bioenergy Res., 1\u20139.","DOI":"10.1007\/s12155-022-10426-0"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"124022","DOI":"10.1016\/j.biortech.2020.124022","article-title":"Revealing the mechanisms for potassium ferrate affecting methane production from anaerobic digestion of waste activated sludge","volume":"317","author":"Hu","year":"2020","journal-title":"Bioresour. Technol."},{"key":"ref_22","unstructured":"United Tech (2003). Anaerobic Digestion, UTI Web Design, United Tech."},{"key":"ref_23","unstructured":"European Environmental Agency, EEA (2023, January 06). Bio-Waste in Europe, Available online: https:\/\/www.eea.europa.eu\/publications\/bio-waste-in-europe."},{"key":"ref_24","unstructured":"(2023). Recycling of Bio-Waste, Eurostat."},{"key":"ref_25","unstructured":"Dire\u00e7\u00e3o Regional de Estat\u00edstica da Madeira (2023, January 06). Waste Statistics, Available online: https:\/\/estatistica.madeira.gov.pt."},{"key":"ref_26","unstructured":"(2023, January 06). Population Projections, OECD Statistics. Available online: https:\/\/stats.oecd.org\/Index.aspx?DataSetCode=POPPROJ."},{"key":"ref_27","unstructured":"Alves, M.M.S. (1998). Estudo e Caracteriza\u00e7\u00e3o de Digestores Anaer\u00f3bios de Leito Fixo, Disserta\u00e7\u00e3o para Doutoramento em Engenharia Biol\u00f3gica e Qu\u00edmica, Universidade do Minho."},{"key":"ref_28","unstructured":"(2000). Characterization of Sludges\u2014Determination of Trace Elements and Phosphorous (Standard No. BS EN 13346:2000)."},{"key":"ref_29","unstructured":"(2009). Establishes the Regime for the Use of Sewage Sludge in Agriculture Soils, Transposing Council Directive 86\/278\/EEC of 12 June (Standard No. No.276\/2009)."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"16577","DOI":"10.1021\/acs.iecr.1c03177","article-title":"Valorizing Waste Biomass via Hydrodynamic Cavitation and Anaerobic Digestion","volume":"60","author":"Nagarajan","year":"2021","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_31","unstructured":"Bisschops, H., and Spanjers, S.E. (2009). Development of Decentralized Anaerobic Digestion Systems for Application in the UK, Lettinga Associates Foundation."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1016\/j.wasman.2021.12.035","article-title":"Anaerobic digestate management, environmental impacts, and techno-economic challenges","volume":"140","author":"Lamolinara","year":"2022","journal-title":"Waste Manag."},{"key":"ref_33","unstructured":"Vandevivere, P., De Baere, L., and Verstraete, W. (2002). Types of Anaerobic Digester for Solid Wastes, Biomethanization of the Organic Fraction of Municipal Solid Wastes, IWA Publishing."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1016\/0043-1354(92)90217-R","article-title":"Effect of heavy metals on volatile fatty acid degradation in anaerobic digestion","volume":"26","author":"Lin","year":"1992","journal-title":"Water Res."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1016\/j.jenvman.2007.03.032","article-title":"Thermophilic adaptation of a mesophilic anaerobic sludge for food waste treatment","volume":"88","author":"Ortega","year":"2008","journal-title":"J. Environ. Manag."},{"key":"ref_36","unstructured":"David, A. (2013). Technical Document on Municipal Solid Waste Organics Processing: Municipal Solid Waste Organics Processing, Canadian Electronic Library. Available online: https:\/\/policycommons.net\/artifacts\/1188629\/technical-document-on-municipal-solid-waste-organics-processing\/1741754\/."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"655","DOI":"10.2175\/WER.65.5.8","article-title":"Competition Between Methanogens and Sulfate Reducers: Effect of COD: Sulfate Ratio and Acclimation","volume":"65","author":"McCartney","year":"1993","journal-title":"Water Environ. Res."},{"key":"ref_38","unstructured":"(2002). Regulamento n.\u00ba 1774 de 2002, da Comiss\u00e3o Europeia."},{"key":"ref_39","unstructured":"Kossmann, W., and P\u00f6nitz, U. (1997). Biogas Digest Volume I: Biogas Basics, ISAT."},{"key":"ref_40","unstructured":"(2000). Guia T\u00e9cnico de Biog\u00e1s, Minist\u00e9rio da Energia e Geologia."},{"key":"ref_41","unstructured":"(2019). Roteiro Para a Neutralidade Carb\u00f3nica 2050, RNC2050, Presidency of the Council of Ministers."},{"key":"ref_42","unstructured":"(2007). Plano Estrat\u00e9gico para os Res\u00edduos S\u00f3lidos Urbanos 2007\u20132016, PERSU II, Minist\u00e9rio do Ambiente e do Ordenamento do Territ\u00f3rio e do Desenvolvimento Regional."},{"key":"ref_43","unstructured":"(2012). Roteiro Nacional de Baixo Carbono 2050, RNBC, Ag\u00eancia Portuguesa do Ambiente, Minist\u00e9rio da Agricultura, do Mar, do Ambiente e do Ordenamento do Territ\u00f3rio."},{"key":"ref_44","unstructured":"Masson-Delmotte, V., Zhai, P., Pirani, A., Connors, S.L., P\u00e9an, C., Berger, S., Caud, N., and IPCC (2021). Climate Change 2021: The Physical Science Basis, IPCC. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change."},{"key":"ref_45","unstructured":"(2007). Portaria n.\u00ba 187\/2007; 1.\u00aa S\u00e9rie, N\u02da30, Di\u00e1rio da Rep\u00fablica."},{"key":"ref_46","unstructured":"(2010). Resolu\u00e7\u00e3o do Conselho de Ministros n.\u00ba 93\/2010; 1.\u00aas\u00e9rie N. \u00ba230, Di\u00e1rio da Rep\u00fablica."},{"key":"ref_47","unstructured":"(2019). Portaria n\u00ba241-B\/2019, Di\u00e1rio da Rep\u00fablica."},{"key":"ref_48","unstructured":"(2011). Decree-Law n.\u00ba 34, 2011, Minist\u00e9rio da Economia e do Emprego."},{"key":"ref_49","unstructured":"(2013). Decree-Law n.\u00ba 25, 2013, Minist\u00e9rio da Economia e do Emprego."},{"key":"ref_50","unstructured":"Canovai, A. (2015). La Digestion Anaerobica, Fondazione per lo Sviluppo Sostenible, SECIT."},{"key":"ref_51","unstructured":"Wolfram Research Company (2021, February 10). Air\u2014Isobaric Specific Heat at 300 \u00b0C. Available online: https:\/\/www.wolframalpha.com."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"283","DOI":"10.2166\/wst.2000.0082","article-title":"Anerobic Digestion of Solid Waste: State of the Art","volume":"41","year":"2000","journal-title":"Wat. Sci. Technol."},{"key":"ref_53","unstructured":"Jacinto, S. (2014). Sustentabilidade Urbana: An\u00e1lise de Viabilidade da Implementa\u00e7\u00e3o de um Digestor Anaer\u00f3bio de Res\u00edduos Org\u00e2nicos na Freguesia dos Olivais, T\u00e9cnico."},{"key":"ref_54","unstructured":"(2021, February 15). Industrial Crusher. Available online: https:\/\/franklinmiller.com\/product\/taskmaster-tm8500\/."},{"key":"ref_55","unstructured":"(2021, March 20). Batch Pasteurizer. Available online: http:\/\/www.alibaba.com\/."},{"key":"ref_56","unstructured":"(2021, March 20). Industrial Shredders. Available online: http:\/\/franklinmiller.com\/."},{"key":"ref_57","unstructured":"(2021, March 20). Compressores de ar e g\u00e1s. Available online: https:\/\/www.atlascopco.com\/content\/dam\/atlas-copco\/compressor-technique\/industrial-air\/documents\/leaflets\/compressors\/sf1-22\/SF1-22_antwerp_leaflet_EN_2935084448.pdf."},{"key":"ref_58","unstructured":"(2021, March 25). Sand, Sludge & Slurry Pumps. Available online: http:\/\/www.bjmpumps.com\/."},{"key":"ref_59","unstructured":"(2021, March 25). Grundfos, SL1 and SLV pumps. Available online: http:\/\/pt.grundfos.com\/."},{"key":"ref_60","unstructured":"(2021, March 25). Gasometer. Available online: https:\/\/www.alibaba.com\/product-detail\/ACME-Biogas-dedicated-flowmeter-automatic-biogas_60480218785.html."},{"key":"ref_61","unstructured":"Seadi, T., Rutz, D., Prassl, H., K\u00f6ttner, M., and Finsterwalder, T. (2008). Biogas Handbook, University of Southern Denmark Esbjerg."},{"key":"ref_62","unstructured":"(2021, March 25). Dab Pumps, Circulators and In-Line Pumps. Available online: http:\/\/www.dabpumps.com\/."},{"key":"ref_63","unstructured":"(2021, March 28). Solid Liquid Separator. Available online: https:\/\/sepcom.wamgroup.com\/en-GB\/SEPCOM\/News\/1533\/New-components-for-SEPCOM-Biogas-and-SEPCOM-015."},{"key":"ref_64","unstructured":"(2021, March 28). PORDATA, Data Base, Funda\u00e7\u00e3o Francisco Manuel dos Santos Wamgroup, Wastewater Treatment Equipment. Available online: http:\/\/www.wamgroup.com\/."},{"key":"ref_65","unstructured":"Phetteplace, G. (1995). Efficiency of Steam and Hot Water Heat Distribution Systems, CRREL."},{"key":"ref_66","doi-asserted-by":"crossref","unstructured":"(2015). Decree-Law No. 103\/2015, 15 June 2015, Minist\u00e9rio da Economia.","DOI":"10.1515\/iclr-2016-0038"},{"key":"ref_67","unstructured":"United Nations Framework Convention on Climate Change (2021, February 10). The Mechanisms under the Kyoto Protocol. Available online: http:\/\/unfccc.int\/."},{"key":"ref_68","unstructured":"Henriques (2008). Metodologia Para C\u00e1lculo Das Emiss\u00f5es De Gases De Efeito De Estufa Associadas A Edificios, Henriques."},{"key":"ref_69","unstructured":"(2021, February 12). Fusion Media Limited. Carbon Emissions Historical Data. Available online: http:\/\/www.investing.com."},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"130","DOI":"10.1016\/S1750-5836(07)00098-9","article-title":"Estimating local greenhouse gas emissions\u2014A case study on a Portuguese municipality","volume":"2","author":"Gomes","year":"2008","journal-title":"Int. J. Greenh. Gas Control"},{"key":"ref_71","unstructured":"Phong, N.T. (2012). Greenhouse Gas Emissions from Composting and Anaerobic Digestion Plants, Bonn University."},{"key":"ref_72","first-page":"44","article-title":"Treibhausgas emissionen aus Biogasanlagen","volume":"1\/2","author":"Cuhls","year":"2011","journal-title":"Umwelt Magazin. Ausgabe."},{"key":"ref_73","unstructured":"Wulf, S., Vandr\u00e9, R., and Clemens, J. (2002). Non-CO2 Greenhouse Gases: Scientific Understanding, Control Options and Policy Aspects, Proceedings of the Third International Symposium, Maastricht, The Netherlands, 21\u201323 January 2002, Millpress Science Publishers."},{"key":"ref_74","doi-asserted-by":"crossref","first-page":"813","DOI":"10.1177\/0734242X09344876","article-title":"Anaerobic digestion and digestate use: Accounting of greenhouse gases and global warming contribution","volume":"27","author":"Moller","year":"2009","journal-title":"Waste Manag. Res."},{"key":"ref_75","unstructured":"Tech4waste (2018). Waste and Resource Management in Germany and EU, Technical University Braunschweig."},{"key":"ref_76","unstructured":"Arati, J. (2009). Evaluating the Economic Feasibility of Anaerobic Digestion of Kawangware Market Waste, College of Agriculture, Kansas State University."},{"key":"ref_77","unstructured":"Nielsen, L.H., and Hjort-Gregersen, K. (2002). Socio-Economic Analysis of Centralized Biogas Plants, Ris\u00f8 National Laboratory and University of South Denmark."},{"key":"ref_78","doi-asserted-by":"crossref","first-page":"4235","DOI":"10.1016\/j.ijhydene.2008.06.010","article-title":"Energy scenarios for Malta","volume":"33","author":"Busuttil","year":"2008","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_79","unstructured":"TRATOLIXO (2020). Central de Compostagem para Res\u00edduos Verdes, TRATOLIXO."},{"key":"ref_80","unstructured":"(2021, March 08). Information from ARM, \u00c1gua e Res\u00edduos da Madeira, Madeira Island, Portugal. Available online: https:\/\/arm.pt\/."},{"key":"ref_81","unstructured":"(2023, January 08). Togo Composting. Available online: https:\/\/togohb.com\/food-waste-composting\/."}],"container-title":["Clean Technologies"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2571-8797\/5\/1\/14\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T18:28:23Z","timestamp":1760120903000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2571-8797\/5\/1\/14"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,2,8]]},"references-count":81,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2023,3]]}},"alternative-id":["cleantechnol5010014"],"URL":"https:\/\/doi.org\/10.3390\/cleantechnol5010014","relation":{},"ISSN":["2571-8797"],"issn-type":[{"value":"2571-8797","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,2,8]]}}}