Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/33769

Title: Assessment of biomass and biochar of maritime pine as a porous medium for water retention in soils
Authors: Santos, Rodrigo V.
Mendes, Miguel A. A.
Alexandre, Carlos
Carrott, Manuela Ribeiro
Rodrigues, Abel
Ferreira, Ana F.
Keywords: biomass
biochar
carbonization
specific surface area
porosity
soil water retention
Issue Date: 13-Aug-2022
Publisher: MDPI
Citation:  Rodrigo V. Santos, Miguel A. A. Mendes, Carlos Alexandre, Manuela Ribeiro Carrott, Abel Rodrigues, Ana F. Ferreira. 2022. Assessment of biomass and biochar of maritime pine as a porous medium for water retention in soils. Energies 15, 5882.
Abstract: Pinewood biomass in Portugal can be considered a major source of biochar for soil physical, chemical, and biological edaphic amendment. This work intended to evaluate the aptitude of lab produced biochar for upgrading soil moisture dynamics’ relationships considering mixtures of biochar with silica-based sand. The methodology used focused on the carbonization of pine biomass with inert atmosphere at 300 ◦C, 400 ◦C, 500 ◦C and 600 ◦C, followed by a chemical proximate and thermogravimetric analysis, scanning electron microscopy, Fourier Transform Infrared analysis, numerical modeling, and characterization of biochar porosity by gas adsorption (Brunauer– Emmett–Teller) and mercury porosimetry. The results showed the increased amounts of soil water retention and plant available water, evaluated through pF curves, due to biochar application. The thermogravimetric analysis mass loss patterns and FTIR transmittance, reflected major structural modifications in carbonized products by comparison with raw biomass. Mercury porosimetry showed that biochar pores between 392 and 250 μm and 32 μm and 6 μm gave the highest pore volume for water retention with a major increase from carbonization, by comparison with physical activation. The used methodologies allowed us to conclude that the carbonaceous feedstock can potentiate the improvement of soil water relations aiming at agricultural land use.
URI: http://hdl.handle.net/10174/33769
Type: article
Appears in Collections:MED - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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