This book presents the selected papers presented at the Third International Congress of Applied Chemistry & Environment (ICACE–3) that took place on May 27-29, 2022. The topics of the conference covers topics from the thematic sections: (1) Environment and Climate Change; (2) Green Chemistry  and Natural Substances; (3) Biobased Materials and Nanomaterials; (4) Sustainable Textiles and Clean Processes. For this edition of the conference, it is devoted to present the advantage to use annual plants and/or lignocellulose material as sources for production of fibers and/or cellulose derivatives and/or nanocellulose material with focus on their processing, properties and applications. This book benefits lecturers, students, researchers and industrialists who are working in the field of natural fiber especially in order to preserve the forest resource and to satisfy the increasing demand in pulps.