Cellulose rarely makes headlines, yet it sits at the centre of some of today’s most important questions in sustainable materials. How do we produce it with less energy? How can agricultural residues and other overlooked biomass become high-value products? And what will it take to move these technologies beyond the laboratory?
These were among the questions explored at the Cellulose International Summit (CIS) 2026 , held in Grenoble, France, where researchers and industry representatives gathered to discuss recent advances in cellulose science. Over four days, the programme ranged from new processing technologies and nanocellulose production to packaging, composites and functional materials, reflecting a field that is rapidly expanding both scientifically and industrially.
Among the speakers were two PhD researchers from the Bio-LUSH consortium, whose presentations approached the same challenge from different perspectives: making cellulose-based materials more sustainable to produce while broadening the range of applications they can enable.
Producing more with less
Representing Empa and ETH Zürich, Beatriz Arsuffi presented Tailored Pretreatments for Energy-Efficient Fibrillation of Lignocellulosic Biomass. Her work asks a seemingly simple question: can high-quality microfibrillated cellulose be produced without relying on increasingly intensive processing?
By comparing conventional pretreatment methods with the Bio-LUSH approach, her research demonstrates how carefully designed, milder pretreatments can prepare biomass for fibrillation while reducing energy demand. The work forms part of Bio-LUSH’s wider effort to rethink fibre production through processes that are both technically effective and more resource-efficient.
Around fifty researchers and industry representatives attended the session. Questions from the audience reflected a growing interest in the Bio-LUSH process and, more broadly, in new approaches to fibre processing.
Looking beyond production
Later in the programme, Arthur Valencony from FCBA presented Production of Nanocelluloses and Their Utilization in Different Applications. His presentation shifted the focus from how nanocellulose is produced to what it can become.
Nanocellulose continues to attract attention for its versatility, with applications ranging from sustainable packaging to advanced composites. Arthur’s presentation explored the production of nanocelluloses and their potential across a wide range of applications, reflecting one of Bio-LUSH’s central ideas: that underutilised biomass can be transformed into high-value, bio-based materials.
His session attracted around forty participants, while the conference itself brought together approximately 150 specialists working across cellulose science. One keynote, in particular, echoed a theme familiar to the Bio-LUSH consortium: the growing interest in smaller, decentralised biorefineries capable of processing locally available biomass instead of relying exclusively on large-scale production facilities.
