Valorization of Phytoremediation Biomass for Biogas Production: Advancing a Circular Economy Approach to Mine Tailings Rehabilitation in South Africa. CONECT. International Scientific Conference of Environmental and Climate Technologies, Riga, Latvia, p. 88, 2026. DOI: 10.7250/conect.2026.045. Disponível em: https://ect-journals.rtu.lv/conect/article/view/CONECT.2026.045.. Acesso em: 25 may. 2026.