Study of sulphuric acid catalysed steam pretreatment of the hardwood anadenanthera colubrina

Contenido principal del artículo

Cristhian Carrasco Villanueva
Luis Fernando Quispe
Gunnar Lidén

Resumen

Hemicellulose from lignocellulosic materials constitutes a large potential source of fermentable sugars to be used for fuel production. The hardwood Anadenanthera colubrina is used in the South American forest industry. The wood (and its residues) has a high carbohydrate content (cellulose 43% and hemicellulose 21%) and may be of interest as a lignocellulose feedstock for fuel production. The aim of the present study was to determine conditions for a good recovery of hemicellulose, primarily pentose sugars from that material. A. colubrina hardwood was subjected to steam pretreatment using dilute sulphuric acid (H2SO4 = 0.5 or 1.5 % (w/w)), at a temperature between 180 to 220 °C, a holding time of 300 or 600 s and two moisture contents (40 – 60%). Acid hydrolysis gave a good recovery of pentose sugars, with a xylose yield of 68%, and only minor amounts of degradation products in terms of furan compounds. Only minor proportion of the lignin was solubilised. Acid catalysed steam pretreatment thus appears to be a suitable pretreatment process for extraction of hemicellulose sugars from this feedstock to be used in fermentation processes.


Keywords:


Anadenanthera Colubrina; Ethanol; Steam Pretreatment

Detalles del artículo

Cómo citar
Carrasco Villanueva, C., Quispe, L. F., & Lidén, G. (2018). Study of sulphuric acid catalysed steam pretreatment of the hardwood anadenanthera colubrina. ENERLAC. Revista De energía De Latinoamérica Y El Caribe, 2(1), 56–70. Recuperado a partir de https://enerlac.olade.org/index.php/ENERLAC/article/view/60
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Biografía del autor/a

Cristhian Carrasco Villanueva, Universidad Mayor de San Andrés (UMSA). Bolivia

Department of Chemical Engineering, Lund University, Sweden. Instituto de Investigación y Desarrollo de Procesos Químicos, Ingeniería Química. La Paz, Bolivia

Luis Fernando Quispe, Instituto de Investigación y Desarrollo de Procesos Químicos, Ingeniería Química. Bolivia

Instituto de Investigación y Desarrollo de Procesos Químicos, Ingeniería Química. La Paz, Bolivia.

Gunnar Lidén, Lund University. Sweden

Department of Chemical Engineering, Lund University, Sweden.