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Characterization of Peanut Shells for Their Valorization in Earth Brick

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Document pages: 15 pages

Abstract: Peanutshells from Burkina Faso were characterized using mineralogical,microstructural and chemical methods to perform its possibility to be used asreinforce in adobe bricks. It consists of cellulose (48 wt ), hemicellulose (3 wt ) and lignin (28 wt ). Thepeanut shells were characterized by high porosity and showed water absorption around198 at 72 hours. Its chemical composition is essentially composed of silica,iron oxides, alumina and calcium oxide. Its microstructure showed that thepeanut shells were a compilation of microfibers with high porous of borders. Inwatery solution, the peanut shells released polyphenols. Thermal conductivityof peanut at 25 °C was 0.155 ± 0.021 W mK.The physico-chemical characteristics of peanut shells were similar to thosefound with agricultural by-products used in adobe reinforce.

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