Household carbon footprint integrating extension and teaching in an undergraduate course in environmental engineering
DOI:
https://doi.org/10.14295/bjs.v5i3.822Keywords:
environmental impact, solid waste, energy management, logistics, climate changeAbstract
The curricularization of university extension within the pedagogical projects of Engineering programs is a recent and still consolidating approach in Brazil. This study aimed to evaluate household carbon footprint management as an extension-based educational strategy in undergraduate Environmental Engineering. The extension project was conducted in 2024 and 2025 within the Environmental Management course of the Environmental Engineering program at São Paulo State University (Unesp), in Sorocaba, São Paulo, Brazil. Students assessed environmental management practices in household settings that could reduce carbon emissions. 15 residences located in 8 municipalities within approximately 100 km of São Paulo were evaluated. The project included: (a) raising residents’ awareness of climate change impacts; (b) inventorying logistics (Scope 1), energy consumption (Scope 2), and solid waste generation and management (Scope 3); (c) conducting dialogic activities with residents to discuss alternatives for reducing the carbon footprint; and (d) estimating the projected carbon footprint based on management options selected by the residents. The results indicated that logistics was the main source of household carbon dioxide emissions (69%), followed by household waste management (20%) and energy consumption (11%). Although all residents demonstrated awareness of climate change and willingness to reduce their carbon footprint, resistance to change was observed, particularly regarding logistics-related practices. Consequently, the projected reductions based on feasible actions reached 12% for logistics, 23% for waste management, and 19% for energy consumption. The integration of extension activities into the Environmental Engineering curriculum contextualized course content and provided students with practical experience in understanding the social, economic, and cultural factors that influence environmental management decision-making at the household level.
References
Abbass, K., Qasim, M. Z., Song, H., Murshed, M., Mahmood, H., & Younis, I. (2022). A review of the global cli-mate change impacts, adaptation, and sustainable mitigation measures. Environmental Science and Pollu-tion Research, 29, 42539-42559. https://doi.org/10.1007/s11356-022-19718-6 DOI: https://doi.org/10.1007/s11356-022-19718-6
Agritempo (2025). Sistema de Monitoramento Agrometeorológico. Available in: <https://www.agritempo.gov.br/br/estado/SP/pesquisa/>. Access on: November 29, 2025
ANFAVEA. Associação Nacional dos Fabricantes de Veículos Automotores. Brazilian automotive industry ye-arbook. São Paulo: ANFAVEA, 2025.
ABEP. Associação Brasileira de Empresa de Pesquisa (2024). Critério de classificação econômica Brasil, publi-cado em 27 de junho de 2024. Available in: < chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://abep.org/wp-content/uploads/2024/09/01_cceb_2024.pdf>. Access on: November 17, 2025.
Araujo, L. M., Gianelli, B. F., Mancini, S. D., & Medeiros, G. A. (2025). Life cycle assessment of the artisanal bamboo pole (Guadua angustifolia) production in the Brazilian Amazon. Brazilian Journal of Science, 4(4), 13-28. https://doi.org/10.14295/bjs.v4i4.719 DOI: https://doi.org/10.14295/bjs.v4i4.719
Barbosa, J. T. L., Mancini, S. D., Maranduba, H. L., Souza, R. G., Medeiros, G. A., & Belli, M. C. A. S. (2025). Avaliando os impactos ambientais de um parque fabril de eletroeletrônicos a partir de cenários sobre resí-duos sólidos. Revista DELOS, 18, 63, 01-22. https://doi.org/10.55905/rdelosv18.n63-184 DOI: https://doi.org/10.55905/rdelosv18.n63-184
Brasil (2018). Ministério da Educação. Resolução nº 7, de 18 de dezembro de 2018. Brasil: Ministério da Edu-cação. Available in: http://portal.mec.gov.br/index.php?option=com_docman&view= downlo-ad&alias=104251-rces007-18&category_slug=dezembro-2018-pdf&Itemid=30192 Access on: November 20, 2025.
Bressane, A, Roveda, S. R. M. M., Roveda, J. A. F., Martins, A. C. G., Ribeiro, A. I., Pravia, Z. M. C., & Medeiros, G. A. (2017). Aprendizagem baseada em dinâmicas: uma proposta pedagógica para formação integral na Engenharia. Revista de Ensino de Engenharia, 36(1), 59-71. https://doi.org/10.5935/2236-0158.20170006 DOI: https://doi.org/10.5935/2236-0158.20170006
Costa, M. P., Schoeneboom, J. C., Oliveira, S. A., Rafael S. Viñas, R. S. & Medeiros, G. A. (2018). A so-cio-eco-efficiency analysis of integrated and non-integrated crop-livestock-forestry systems in the Brazili-an Cerrado based on LCA. Journal of Cleaner Production, 171, 1460-1471. DOI: https://doi.org/10.1016/j.jclepro.2017.10.063
Cristóvão, G.S.F., Medeiros, G.A., Mancini, S.D., & Pessela, J.D. (2022). Index for the assessment of municipal solid waste management in Angola: a case study in Kuito, Bié province. African Geographical Review, 41(4), 545-557, https://doi.org/10.1080/19376812.2021.1974902 DOI: https://doi.org/10.1080/19376812.2021.1974902
Cruz, E. S., Santoro, B. F., & Hirota, W. H. (2024). Articula Tecnologias – É possível a inserção curricular da extensão em educação em cursos de engenharia? Revista Conexão, 20, e2424508, 01-18. https://doi.org/10.5212/Rev.Conexao.v20.24508.052 DOI: https://doi.org/10.5212/Rev.Conexao.v.20.24508.052
Deda, D., Gervasio, H., & Quina, M. J. (2025). Advancing carbon footprint in higher education: an integrated assessment model. The International Journal of Life Cycle Assessmen, 30, 1930-1943. https://doi.org/10.1007/s11367-025-02514-y DOI: https://doi.org/10.1007/s11367-025-02514-y
Dutra, A. C., Medeiros, G. A., & Gianelli, B. F. (2019). Avaliação do ciclo de vida como uma ferramenta de aná-lise de impactos ambientais e conceito aplicados em programas educativos. Revista Brasileira de Ciências Ambientais, 51, 15-27. DOI: https://doi.org/10.5327/Z2176-947820190399
Enlund, J., Andersson, D. & Carlsson, F. (2023). Individual carbon footprint reduction: evidence from pro‑environmental users of a carbon calculator. Environmental and Resource Economics, 86, 433-467. https://doi.org/10.1007/s10640-023-00800-7 DOI: https://doi.org/10.1007/s10640-023-00800-7
Feng, K., Hubacek, K., & Song, K. (2021). Household carbon inequality in the U.S. Journal of Cleaner Produc-tion, 278, 123994. https://doi.org/10.1016/j.jclepro.2020.123994 DOI: https://doi.org/10.1016/j.jclepro.2020.123994
Fengler, F. H., Medeiros, G. A., Ribeiro, A. I., Peche Filho, A., Moraes, J. F. L., & Bressane, A. (2015). Desenvol-vimento da percepção ambiental de alunos de pós-graduação em Ciências Ambientais da Unesp Sorocaba por meio da abordagem construtivista de ensino. Revista Brasileira de Pós Graduação, 12, 29, 805-834. DOI: https://doi.org/10.21713/2358-2332.2015.v12.857
Folli-Pereira, M. S., Silva, E. P., Deluski, E. C., & Pereira, S. S. (2025) Sensibilização da comunidade para a im-portância das árvores no ambiente urbano através de ação de extensão universitária: contribuições para a curricularização da extensão nos cursos de Engenharia Florestal. Revista Conexão, 21, e2524334, 01-16. https://doi.org/10.5212/Rev. Conexao.v21.24334.004 DOI: https://doi.org/10.5212/Rev.Conexao.v.21.24334.004
Fu, J., An, N. , Huang, C., Shen, Y., Pan, M., Wang, J., Yao, J., & Yu, Z. (2024). Chinese household carbon foot-print: structural differences, influencing factors, and emission reduction strategies analysis. Buildings, 14, 3451. https://doi.org/10.3390/buildings14113451 DOI: https://doi.org/10.3390/buildings14113451
Gershon, O., & Patricia, O. (2019). Carbon (CO2) Footprint determination: an empirical study of families in Port Harcourt. Journal of Physics: Conference Series, 1299, 012019. https://doi.org/10.1088/1742-6596/1299/1/012019 DOI: https://doi.org/10.1088/1742-6596/1299/1/012019
Hoffman, K. C., & Dicks, A. P. (2023). Incorporating the United Nations Sustainable Development Goals and green chemistry principles into high school curricula. Green Chemistry Letters and Reviews, 16(1), 2185108. https://doi.org/10.1080/17518253.2023.2185108 DOI: https://doi.org/10.1080/17518253.2023.2185108
Hogemann, E. R. (2025). Public policies in higher education in Brazil: From hollow inclusion to social trans-formation through the curricularization of university extension. Journal of Legal and Political Education, 2(2), 5-23. https://doi.org/10.47305/jlpe.2025.1900 DOI: https://doi.org/10.47305/jlpe.2025.1900
Hogemann, E. R. (2023). Sobre a curricularização da extensão nos projetos pedagógicos dos cursos de Direito. Revista Internacional Consinter de Direito, 9(17), 1-24. https://doi.org/10.19135/revista.consinter.00017.11 DOI: https://doi.org/10.19135/revista.consinter.00017.11
Hu, M., Fryer, K. C., & Mathis, J. (2025). Teaching carbon-neutral development using immersive virtual reality: An experiment. Journal of Civil Engineering Education, 151, 4. https://doi.org/10.1061/JCEECD.EIENG-2140 DOI: https://doi.org/10.1061/JCEECD.EIENG-2140
Huang, L., Yoshida, Y., Li, Y., Cheng, N., Xue, J., & Long, Y. (2024). Sustainable lifestyle: Quantification and determining factors analysis of household carbon footprints in Japan. Energy Policy, 186, 114016. https://doi.org/10.1016/j.enpol.2024.114016 DOI: https://doi.org/10.1016/j.enpol.2024.114016
Huang, L., Montagna, S., Wu, Y., Chen, Z., Tanaka, K., Yoshida, Y., & Long, Y. (2023a). Extension and update of multiscale monthly household carbon footprint in Japan from 2011 to 2022. Scientific Data, 10, 439. https://doi.org/10.1038/s41597-023-02329-2 DOI: https://doi.org/10.1038/s41597-023-02329-2
Huang, L., Long, Y., Chen, J., & Yoshida, Y. (2023b). Sustainable lifestyle: Urban household carbon footprint accounting and policy implications for lifestyle-based decarbonization. Energy Policy, 181, 113696. https://doi.org/10.1016/j.enpol.2023.113696 DOI: https://doi.org/10.1016/j.enpol.2023.113696
IBGE (2025). Instituto Brasileiro de Geografia e Estatística. IBGE divulga o rendimento domiciliar per capita 2024, publicado em 28 de fevereiro de 2025. Available in: https://biblioteca.ibge.gov.br/visualizacao/periodicos/3100/rdpc_2024.pdf>. Access on: september 22, 2025.
IBGE (2022). Instituto Brasileiro de Geografia e Estatística. Cidades e Estados do Brasil: Censo 2022. Available in: < https://cidades.ibge.gov.br/brasil/pesquisa/10102/122229>. Access on: november 22, 2025.
IPEA (2011). Instituto de Pesquisa Econômica Aplicada. Emissões relativas de poluentes do transporte motori-zado de passageiros nos grandes centros urbanos brasileiros. Brasília: Ipea.
ISO (2018). International Organization for Standardization. ISO 14064-1:2018. Greenhouse gases. Part 1: Specification with guidance at the organization level for quantification and reporting of greenhouse gas emissions and removals. Geneve: ISO.
Jiang, Y., Motose, R., & Ihara, T. (2023). Estimating the carbon footprint of household activities in Japan from the time‑use perspective. Environmental Science and Pollution Research, 30, 22343–22374. https://doi.org/10.1007/s11356-022-23387-w DOI: https://doi.org/10.1007/s11356-022-23387-w
Kiehle, J., Kopsakangas-Savolainen, M., Hilli, M., & Pongracz, E. (2023). Carbon footprint at institutions of higher education: The case of the University of Oulu. Journal of Environmental Management, 329, 117056. https://doi.org/10.1016/j.jenvman.2022.117056 DOI: https://doi.org/10.1016/j.jenvman.2022.117056
Klein, A. M., Lopes, S. F., & Cruz, L. A. N. (2024). A experiência da Universidade Estadual Paulista em São José do Rio Preto para a implementação da curricularização da extensão. InterMeio, 30(59), 126-141. https://doi.org/10.55028/intermeio.v30i59 DOI: https://doi.org/10.55028/intermeio.v30i59.20543
Lee, J., Taherzadeh, O., & Kanemoto, K. (2021). The scale and drivers of carbon footprints in households, cities and regions across India. Global Environmental Change, 66, 102205. https://doi.org/10.1016/j.gloenvcha.2020.102205 DOI: https://doi.org/10.1016/j.gloenvcha.2020.102205
Lenort, R., Wicher, P., & Zapletal, F. (2023). On influencing factors for Sustainable Development Goal prioriti-sation in the automotive industry. Journal of Cleaner Production, 387, 135718. https://doi.org/10.1016/j.jclepro.2022.135718. DOI: https://doi.org/10.1016/j.jclepro.2022.135718
Liang, L., Chen, M., Zhang, X., & Sun, M. (2024). Understanding changes in household carbon footprint during rapid urbanization in China. Energy Policy, 185, 113928. https://doi.org/10.1016/j.enpol.2023.113928 DOI: https://doi.org/10.1016/j.enpol.2023.113928
Liao, M., Jia, J., Han, G., Wang, G., Zhang, Z., & Wu, G. (2023). Reduced carbon footprint inequality in China: Evidence from latest household survey data. Journal of Cleaner Production, 384, 135342. https://doi.org/10.1016/j.jclepro.2022.135342 DOI: https://doi.org/10.1016/j.jclepro.2022.135342
Liu, X., & Wang, K. (2024). The inequality of household carbon footprint in China: A city-level analysis. Ener-gy Policy, 188, 114098. https://doi.org/10.1016/j.enpol.2024.114098 DOI: https://doi.org/10.1016/j.enpol.2024.114098
Liu, C., Shang, J., & Liu, C. (2023). Exploring household food waste reduction for carbon footprint mitigation: A case study in Shanghai, China. Foods, 12, 3211. https://doi.org/10.3390/foods12173211 DOI: https://doi.org/10.3390/foods12173211
Long, Y., Jiang, Y., Chen, P., Yoshida, Y., Sharifi, A., Gasparatos, A., Wu, Y., Kanemoto, K., Shigetomi, Y., & Guan, D. (2021). Monthly direct and indirect greenhouse gases emissions from household consumption in the major Japanese cities. Scientific Data, 8(301), 1-11. https://doi.org/10.1038/s41597-021-01086-4 DOI: https://doi.org/10.1038/s41597-021-01086-4
Lucas, A. C., Leite, J. P. A., Gonçalves Junior, O., Van Noije, P., & Sousa, R. R. (2023). Curricularização da ex-tensão: a experiência do curso de administração pública da Faculdade de Ciências Aplicadas Unicamp. Cadernos Gestão Pública e Cidadania, 28, e88038. DOI: https://doi.org/10.12660/cgpc.v28.88038
Markaki, M., Belegri-Robolia, A., Sarafidisb, Υ., & Mirasgedis, S. (2017). The carbon footprint of Greek house-holds (1995–2012). Energy Policy, 100, 206-215. http://dx.doi.org/10.1016/j.enpol.2016.10.031 DOI: https://doi.org/10.1016/j.enpol.2016.10.031
MCTI. Ministério da Ciência, Tecnologia e Inovação (2024). Fatores de emissão da margem de operação pelo método da análise de despacho. Available in: < https://www.gov.br/mcti/pt-br/acompanhe-o-mcti/sirene/dados-e-ferramentas/fatores-de-emissao> Access on: november 18, 2025.
Medeiros, G. A., & Daniel, L. A. (2009). Responsabilidade ambiental: neutralização do carbono gerado pelos alunos da Faculdade de Tecnologia De Indaiatuba – SP. Revista Reverte, 7, 7-19.
Menichelli, B. H., Oliveira, B. O. S., & Medeiros, G. A. (2023). Impact of collection from indigenous lands on the municipal solid waste management system: A case study in the Amazon. Research, Society and Devel-opment, 12(14), e88121444612. http://dx.doi.org/10.33448/rsd-v12i14.44612 DOI: https://doi.org/10.33448/rsd-v12i14.44612
Miehe, R., Scheumann, R., Jones, C. M., Kammen, D. M., & Finkbeiner, M. (2016). Regional carbon footprints of households: a German case study. Environment, Development, and Sustainability, 18, 577-591. http://dx.doi.org/10.1007/s10668-015-9649-7 DOI: https://doi.org/10.1007/s10668-015-9649-7
Oliveira, B. O. S., Medeiros, G. A., Mancini, S. D., Paes, M. X., & Gianelli, B. F. et al. (2022). Eco-efficiency transition applied to municipal solid waste management in the Amazon. Journal of Cleaner Production, 373, 133807. https://doi.org/10.1016/j.jclepro.2022.133807 DOI: https://doi.org/10.1016/j.jclepro.2022.133807
Oliveira, B. O. S., Medeiros, G. A., Paes, M. X., & Mancini, S. D. (2021). Integrated municipal and solid waste management in the Amazon: addressing barriers and challenges in using the Delphi Method. International Journal of Environmental Impacts, 4(1), 49-61. http://dx.doi.org/10.2495/EI-V4-N1-49-61 DOI: https://doi.org/10.2495/EI-V4-N1-49-61
Oliveira-Melo, F. G., Araújo, D. C., Sant’Anna, A. M. O., & Barbosa, A. S. (2025). Prática da extensão universitá-ria nos cursos de engenharia ofertados por instituições de ensino superior públicas no Brasil. Revista de Ensino de Engenharia, 44, 63-80. https://doi.org/10.37702/REE2236-0158.v44p63-80.2025 DOI: https://doi.org/10.37702/2175-957X.COBENGE.2024.5267
Ottelin, J., Heinonen, J., Nässén, J., & Junnila, S. (2019). Household carbon footprint patterns by the degree of urbanisation in Europe. Environmental Research Letters, 14, 114016. https://doi.org/10.1088/1748-9326/ab443d DOI: https://doi.org/10.1088/1748-9326/ab443d
Paes, M. X., Picavet, M. E. B., & Puppim de Oliveira, J. A. (2025). Innovation in small municipalities: The case of waste management. Habitat International, 165, 103554. https://doi.org/10.1016/j.habitatint.2025.103554 DOI: https://doi.org/10.1016/j.habitatint.2025.103554
Paes, M. X., Medeiros, G. A, Mancini, S. D., Ribeiro, F. M., & Oliveira, J. A. P. (2021). Transition to circular economy in Brazil: A look at the municipal solid waste management in the state of São Paulo. Manage-ment Decision, 59(8), 1827-1840. https://doi.org/10.1108/MD-09-2018-1053. DOI: https://doi.org/10.1108/MD-09-2018-1053
Patel, R., Marvuglia, A., Baustert, P., Huang, Y., Shivakumar, A., Nikolic, I., & Verma, T. (2022). Quantifying households’ carbon footprint in cities using socioeconomic attributes: A case study for The Hague (Neth-erlands). Sustainable Cities and Society, 86, 104087. https://doi.org/10.1016/j.scs.2022.104087 DOI: https://doi.org/10.1016/j.scs.2022.104087
Saccardo, R. R., Domingues, A. M., Battistelle, R. A. G., Bezerra, B. S., Siqueira, R. M., & Santos Neto, J. B. S. (2023). Investment in photovoltaic energy: An attempt to frame Brazil within the 2030 passage target of the Paris agreement. Cleaner Energy System, 5, 100070. https://doi.org/10.1016/j.cles.2023.100070 DOI: https://doi.org/10.1016/j.cles.2023.100070
Salo, M., Mattinen-Yuryev, M. K., & Nissinen, A. (2019). Opportunities and limitations of carbon footprint cal-culators to steer sustainable household consumption e Analysis of Nordic calculator features. Journal of Cleaner Production, 207, 658-666. https://doi.org/10.1016/j.jclepro.2018.10.035 DOI: https://doi.org/10.1016/j.jclepro.2018.10.035
São Paulo (2020) Secretaria de Infraestrutura e Meio Ambiente. Plano de resíduos sólidos do estado de São Paulo 2020. São Paulo: Secretaria de Infraestrutura e Meio Ambiente, 2020.
Shigetomi, Y., Kanemoto, K., Yamamoto, Y., & Kondo, Y. (2021). Quantifying the carbon footprint reduction potential of lifestyle choices in Japan. Environmental Research Letters, 16, 064022. https://doi.org/10.1088/1748-9326/abfc07 DOI: https://doi.org/10.1088/1748-9326/abfc07
Schvartz, M. A., Salvia, A. L., Brandli, L. L., Leal Filho, W., & Avila, L.V. (2024). The electric vehicle market in Brazil: A systematic literature review of factors influencing purchase decisions. Sustainability, 16, 4594. https://doi.org/10.3390/su16114594 DOI: https://doi.org/10.3390/su16114594
Silva, L. D., Vieira, A. M., & Tambosi Filho, E. (2024). Curricularização da extensão universitária: indicadores de avaliação para os cursos de administração e contabilidade. Avaliação, 29, e024001. http://dx.doi.org/10.1590/1982-57652024v29id275677 DOI: https://doi.org/10.1590/1982-57652024v29id275677
Silveira, G. T. R., Fernandes, I. K. M., Souza, M. M. C., & Dias, V. C. (2022). A importância da curricularização da extensão no curso de Engenharia Civil. Revista de Ensino de Engenharia, 41, 276-283. http://dx.doi.org/10.37702/REE2236-0158.v41p276-283.2022 DOI: https://doi.org/10.37702/REE2236-0158.v41p276-283.2022
Souza, F. S. H., Hojo‑Souza, N. S., Oliveira, D. C. R., Silva, C. M., & Guidoni, D. L. (2022). An overview of Bra-zilian working age adults vulnerability to COVID‑19. Scientific Reports, 12, 2798. https://doi.org/10.1038/s41598-022-06641-6 DOI: https://doi.org/10.1038/s41598-022-06641-6
Sri, P., & Banerjee, R. (2023). Characteristics, temporal trends, and driving factors of household carbon inequal-ity in India. Sustainable Production and Consumption, 35, 668-683. https://doi.org/10.1016/j.spc.2022.11.017. DOI: https://doi.org/10.1016/j.spc.2022.11.017
Sun, Y., Jia, R., Razzaq, A., & Bao, Q. (2024). Social network platforms and climate change in China: Evidence from TikTok. Technological Forecasting & Social Change, 200, 123197. https://doi.org/10.1016/j.techfore.2023.123197 DOI: https://doi.org/10.1016/j.techfore.2023.123197
West, S. E., Owen, A., Axelsson, K., & West, C. D. (2015). Evaluating the use of a carbon footprint calculator:
Communicating impacts of consumption at household level and exploring mitigation options. Journal of Industrial Ecology, 20(3), 396-409. http://dx.doi.org/10.1111/jiec.12372 DOI: https://doi.org/10.1111/jiec.12372
Zen, I. S., Uddin, M. S., Al-Amin, A. Q., Bin Majid, M. R., Almulhim, A. I., & Doberstein, B. (2022). Socioeco-nomics determinants of household carbon footprint in Iskandar Malaysia. Journal of Cleaner Production, 347, 131256. https://doi.org/10.1016/j.jclepro.2022.131256 DOI: https://doi.org/10.1016/j.jclepro.2022.131256
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