Urban parks and gardens green waste: A valuable resource for the production of fillers for biocomposites applications

Autor: Hélène Angellier-Coussy, Nathalie Gontard, Amandine Viretto
Přispěvatelé: Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), European Project: 0730349(2007), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)
Rok vydání: 2021
Předmět:
Urban green waste
Parks
Recreational
020209 energy
Hydroxybutyrates
Fraction (chemistry)
02 engineering and technology
Fractionation
010501 environmental sciences
engineering.material
01 natural sciences
Matrix (chemical analysis)
[SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture
forestry
Filler (materials)
[SDV.IDA]Life Sciences [q-bio]/Food engineering
0202 electrical engineering
electronic engineering
information engineering
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Waste Management and Disposal
0105 earth and related environmental sciences
Biocomposites
15. Life on land
Pulp and paper industry
6. Clean water
Grinding
Green waste
Anaerobic digestion
Dry fractionation
engineering
Environmental science
Composition (visual arts)
Lignocellulosic fillers
Gardens
Zdroj: Waste Management
Waste Management, Elsevier, 2021, 120, pp.538-548. ⟨10.1016/j.wasman.2020.10.018⟩
Waste Management, 2021, 120, pp.538-548. ⟨10.1016/j.wasman.2020.10.018⟩
ISSN: 0956-053X
DOI: 10.1016/j.wasman.2020.10.018
Popis: International audience; Urban parks and gardens green waste constitute a low-cost and highly available lignocellulosic-rich resource, that is currently treated in composting or anaerobic digestion processes. The present work investigated for the first time the potential of using urban green waste as raw resource for the production of lignocellulosic fillers by dry fractionation (combination of sorting and grinding processes). Five fractions of lignocellulosic fillers with controlled composition were produced: a branches-rich fraction, a grasses-rich fraction, a leaves-rich fraction, and two fractions constituted of a mixture of constituents. All the fractions were ground to reach an average median diameter around 100 μm. The reinforcing effect of each fraction was investigated and compared to that of the sample as a whole. Biocomposites based on a poly(3-hydroxybutyrate-co-3-hydroxyvalerate) as matrix were produced by melt extrusion, with filler contents up to 30 wt%. It was shown that the branches-rich fraction displayed the best reinforcing effect (e.g. stress at break of 37 ± 1 MPa for a filler content of 15 wt%, similar to that of the neat matrix) whereas the grasses-rich fraction slightly degraded the overall mechanical performance (e.g. stress at break of 33.5 ± 1.5 MPa for a filler content of 15 wt%). The dry fractionation and formulation steps could be thus adapted depending on the targeted application, e.g. by choosing to use the whole urban green waste resource, or to remove grasses, or to keep only branches.
Databáze: OpenAIRE
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