Artículo
Effect of acid pretreatment and process temperature on characteristics and yields of pyrolysis products of peanut shells
Fecha de publicación:
12/2017
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Renewable Energy
ISSN:
0960-1481
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Pyrolysis of acid pretreated peanut (Arachis hypogaea) shells was examined in order to improve the yield of liquids (bio-oils) and the characteristics of the three kinds of pyrolysis products. Also, pyrolysis of the pristine shells was comparatively investigated. The acid pretreatment was carried out employing a dilute HCl solution and it successfully diminished the ash content of the shells. Pyrolysis assays were performed in a fixed-bed reactor at different process temperatures (400 °C, 500 °C, and 600 °C). The maximum bio-oil yield was obtained at a temperature of 500 °C for both the pretreated and the pristine shells, but pyrolysis of the formers yielded more bio-oils than the untreated ones (42 wt% vs. 33 wt%). The increase of the process temperature resulted in a reduction of the solid (bio-char) generation for both samples. Demineralization also led to a further reduction of the bio-char yield. Regarding the products characteristics, neither the pretreatment nor the temperature had a noticeable influence on the elemental composition of the bio-oils. However, water content of the bio-oils was lower for the ones arising from pyrolysis of the demineralized shells although it increased with growing process temperature. Likewise, pyrolysis of the demineralized shells resulted in bio-chars with less ash, improving their potentialities as bio-fuels. Also, the bio-chars arising from the treated shells at the higher temperatures (500 °C and 600 °C) resulted in higher BET surface areas (up to 300 m2/g), pointing to their possible use as rough adsorbents or for further upgrading to activated carbons.
Palabras clave:
Bio-Char
,
Bio-Oil
,
Demineralization
,
Peanut Shells
,
Pyrolysis
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(OCA CIUDAD UNIVERSITARIA)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Citación
Gurevich Messina, Luciano Ignacio; Bonelli, Pablo Ricardo; Cukierman, Ana Lea; Effect of acid pretreatment and process temperature on characteristics and yields of pyrolysis products of peanut shells; Pergamon-Elsevier Science Ltd; Renewable Energy; 114; 12-2017; 697-707
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