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Title: A novel approach in organic waste utilization through biochar addition in wood/polypropylene composites

Highlights: • Biochar made from waste wood was added with wood polypropylene composites. • 24% biochar gave the best mechanical properties. • 6% biochar had no effect on physico-mechanical properties of composites. • Coupling agent remained unreacted in composites having higher amount of biochar. - Abstract: In an attempt to concurrently address the issues related to landfill gas emission and utilization of organic wastes, a relatively novel idea is introduced to develop biocomposites where biochar made from pyrolysis of waste wood (Pinus radiata) is added with the same wood, plastic/polymer (polypropylene) and maleated anhydride polypropylene (MAPP). Experiments were conducted by manufacturing wood and polypropylene composites (WPCs) mixed with 6 wt%, 12 wt%, 18 wt%, 24 wt%, and 30 wt% biochar. Though 6 wt% addition had similar properties to that of the control (composite without biochar), increasing biochar content to 24 wt% improved the composite’s tensile/flexural strengths and moduli. The biochar, having high surface area due to fine particles and being highly carbonised, acted as reinforcing filler in the biocomposite. Composites having 12 wt% and 18 wt% of biochar were found to be the most ductile and thermally stable, respectively. This study demonstrates that, WPCs added with biochar has good potentialmore » to mitigate wastes while simultaneously producing biocomposites having properties that might be suited for various end applications.« less
Authors:
 [1] ;  [1] ;  [2]
  1. Department of Civil and Environmental Engineering, University of Auckland, Auckland 1142 (New Zealand)
  2. Department of Mechanical Engineering, Center for Advanced Composite Materials, University of Auckland, Auckland 1142 (New Zealand)
Publication Date:
OSTI Identifier:
22470222
Resource Type:
Journal Article
Resource Relation:
Journal Name: Waste Management; Journal Volume: 38; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; ANHYDRIDES; BIOMASS; EMISSION; FINE PARTICLES; FLEXURAL STRENGTH; LANDFILL GAS; ORGANIC WASTES; PLASTICS; POLYPROPYLENE; PYROLYSIS; SURFACE AREA; WOOD