From Waste to Value: Diagnosing Ethiopia’s Coffee By-Product Circular Economy Commercialization Gap. Journal of Clean Technology, [S. l.], v. 3, n. 2, p. 39–54, 2026. DOI: 10.15294/joct.v3i2.62493. Disponível em: https://journal.unnes.ac.id/journals/joct/article/view/62493. Acesso em: 16 oct. 2026.