The edition contains articles that were presented at the 2nd Eco-Materials Conference in Africa (CEMA’2022) organized by the African Eco-Materials Society (ECOMAT-AFRICA) from June 15 to 17, 2022, in Saly, Senegal. The presented research results are linked to problems of ecology safety, waste utilisation, applications of natural materials and biowaste for building materials and biogas production, analysis of wood materials applications in construction, etc. This edition will be useful to many specialists whose activity relates to materials science, environmental engineering, construction and biomass processing.