TITLE:
Characterization of Peanut Shells for Their Valorization in Earth Brick
AUTHORS:
Ouanmini Bobet, Sory Nassio, Mohamed Seynou, Bakiono Remy, Lamine Zerbo, Issiaka Sanou, Moustapha Sawadogo, Younoussa Millogo, Escadeillas Gilles
KEYWORDS:
Agricultural Wastes, Peanut Shells, Thermal Conductivity, Adobes, Durability
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.8 No.4,
July
30,
2020
ABSTRACT: Peanut
shells from Burkina Faso were characterized using mineralogical,
microstructural and chemical methods to perform its possibility to be used as
reinforce in adobe bricks. It consists of cellulose (48 wt%), hemicellulose (3 wt%) and lignin (28 wt%). The
peanut shells were characterized by high porosity and showed water absorption around
198% at 72 hours. Its chemical composition is essentially composed of silica,
iron oxides, alumina and calcium oxide. Its microstructure showed that the
peanut shells were a compilation of microfibers with high porous of borders. In
watery solution, the peanut shells released polyphenols. Thermal conductivity
of peanut at 25 °C was 0.155 ± 0.021 W/mK.
The physico-chemical characteristics of peanut shells were similar to those
found with agricultural by-products used in adobe reinforce.