Agro-industrial by-products; Biomass valorization; Cassava; Circular economy; Green synthesis; Sustainable materials; Agro-industrial by-product; Biomass valorizations; Cassavum; Functionals; Industrial by-products; Thermal; Valorisation; Bioengineering; Environmental Engineering; Renewable Energy, Sustainability and the Environment; Waste Management and Disposal
Abstract :
[en] Cassava (Manihot esculenta Crantz) is a staple crop of high socioeconomic relevance, and its industrial processing generates large volumes of by-products with potential for valorization. In this study, cassava cultivated in southern Brazil (Palmital, Paraná) was processed, and the derivatives: starch, fiber, and cassava wastewater (manipueira) were systematically separated and characterized to assess their complementary potential for sustainable material development. The starch showed a type A semi-crystalline structure (XRD) with granules averaging 10.8 μm, low acidity (1.58%), and low ash content (0.13%). Thermogravimetric analysis indicated near-complete decomposition below 380 °C, supporting its use as a clean organic fuel, polymeric matrix, and precursor for biodegradable films. XPS revealed high surface oxygen content (40%), indicating suitability for combustion synthesis. The fibers exhibited a lignocellulosic composition with a rough, fibrillar morphology (SEM), higher mineral content, moderate acidity (2.30%), and multistage thermal degradation, suggesting greater thermal stability and potential applications in activated carbon, composites, and catalytic supports. The manipueira was an amorphous aqueous derivative (99.7% moisture), rich in organic and inorganic compounds, with near-neutral pH (6.54) and major thermal decomposition at 605 °C with 66% mass loss, indicating its potential as a liquid precursor, dispersing medium, or reducing agent in combustion-assisted and sol–gel routes. Overall, the derivatives displayed distinct yet complementary properties, enabling the full valorization of cassava biomass and its processing streams, minimizing waste generation, supporting the development of functional materials through sustainable, low-impact pathways, and reinforcing cassava as a strategic feedstock for circular agro-industrial systems.
Disciplines :
Chemistry
Author, co-author :
Balaba, Nayara; Chimie des Interactions Plasma-Surface (ChIPS), Research Institute in Materials Science and Engineering, Université de Mons, Mons, Belgium ; Chemistry Department, University Estadual do Centro-Oeste, UNICENTRO, Guarapuava, Brazil
de Oliveira Primo, Julia; Chimie des Interactions Plasma-Surface (ChIPS), Research Institute in Materials Science and Engineering, Université de Mons, Mons, Belgium ; Chemistry Department, University Estadual do Centro-Oeste, UNICENTRO, Guarapuava, Brazil
Noirfalise, Xavier; Chimie des Interactions Plasma-Surface (ChIPS), Research Institute in Materials Science and Engineering, Université de Mons, Mons, Belgium
Bodnar, Luiz Felipe; Food Engineering Department, University Estadual do Centro-Oeste, Guarapuava, Brazil
Klumpp, Rafael Emil; Materials Science Department, Faculty of Engineering, University of Mons, Mons, Belgium
Bittencourt, Carla ; Université de Mons - UMONS > Faculté des Sciences > Service de Chimie des Interactions Plasma-Surface
Anaissi, Fauze Jaco; Chemistry Department, University Estadual do Centro-Oeste, UNICENTRO, Guarapuava, Brazil
Language :
English
Title :
Integral cassava valorization: Evaluation of derivatives to produce functional and sustainable materials
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