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Effect of pyrolysis temperature on the physicochemical properties of biochar derived from spent coffee grounds . International Journal of Sustainable Energy and Environmental Research, [S. l.], v. 14, n. 2, p. 54–64, 2025. DOI: 10.18488/13.v14i2.4452. Disponível em: https://archive.conscientiabeam.com/index.php/13/article/view/4452. Acesso em: 4 aug. 2026.