The presented proceedings contain the selected peer-reviewed full text papers from the 5th International Conference on Advanced Materials Science (ICoAMS 2022) held on August 24-25, 2022, at the Universitas Muhammadiyah Surakarta, Indonesia, virtually. The collected articles describe the results of research and engineering achievements in biomass processing, biomaterials and environmental protection, including water treatment. This edition will be helpful to specialists in environmental engineering and biotechnologies.