Assessing cellulose nanofiber production from olive tree pruning residue
Úrsula Fillat1, Bernd Wicklein2, Raquel Martín-Sampedro1
1INIA-CIFOR, Departamento de Productos Forestales, Laboratorios de Celulosa y Papel, Ctra. de La Coruña, Km 7.5, Madrid 28040, Spain.
Carbohydrate Polymers
|November 8, 2017
Summary
Olive tree pruning residue can be transformed into cellulose nanofibers (CNF). This study demonstrates the potential of using agricultural waste to create valuable nanomaterials for diverse applications.
Area of Science:
- Agricultural Science
- Materials Science
- Nanotechnology
Background:
- Olive tree pruning generates significant biomass, posing environmental concerns due to burning.
- Valorizing agricultural residues into high-value products is crucial but technologically challenging.
Purpose of the Study:
- To investigate the feasibility of producing cellulose nanofibers (CNF) from olive tree pruning (OTP) residue.
- To characterize OTP-derived CNF and compare its properties with commercially sourced eucalyptus CNF.
Main Methods:
- TEMPO-mediated oxidation of OTP bleached pulp.
- Defibrillation using a microfluidizer.
- Characterization of CNF properties and comparison with eucalyptus CNF.
Main Results:
- OTP-derived CNF exhibited higher carboxylate content (1038 vs. 778 μmol/g) compared to eucalyptus CNF.
- Lower fibrillation yield (48% vs. 96%) and optical transmittance were observed for OTP CNF.
- The visco-elastic gel from OTP CNF demonstrated superior strength compared to the eucalyptus-derived gel.
Conclusions:
- Cellulose nanofibers can be successfully produced from olive tree pruning residue.
- OTP-derived CNF possesses unique properties, including higher carboxylate content and gel strength, making it suitable for various applications.
- This research highlights a sustainable pathway for converting agricultural waste into advanced nanomaterials.
