This collection contains selected papers from the 1st International FibEnTech Congress (FibEnTech21) – New Opportunities for Fibrous Materials in the Ecological Transition held in Covilhã, Portugal on the 9^th–10^th of December 2021. This event was hosted by the Fiber Materials and Environmental Technologies (FibEnTech) research unit and supported by project UIDB/00195/2020, funded by the Portuguese Fundação para a Ciencia e Tecnologia (FCT).

The conference was held to discuss the latest advances and innovations in environmentally sound technologies and fibrous materials from the perspectives of ecological transition and sustainable development.

This KnE Materials Sciences collection contains 28 peer-reviewed papers on innovative and smart cellulose-based materials; functionalisation of textile and cellulosic materials; smart textile-based materials; production of biomaterials from nanofibers; innovative technologies for the engineering of fabrics and knits; water use and waste valorisation; nutrient, biomass and energy recovery in the wastewater treatment process; and eco-design for fibrous materials, among others.

These papers will be of interest to academics, students and professionals researching or working in the fields of paper engineering and cellulosic-based materials, textile engineering and textile fibrous-based materials, chemical engineering, mining engineering and environmental science and engineering.

Conference date: 9–10 December 2021
Location: Covilhã, Portugal
Organizer: Fiber Materials and Environmental Technologies (FibEnTech)
Chief Academic Editor: Arlindo Gomes
Editors: Ana Carreira Lopes, Annabel Fernandes, António Albuquerque, Antonio Mendes, Joana Curto, Paulo Fiadeiro, Rogério Simões
Published: 10 August 2022
ISSN: 2519-1438