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

  • Cristhian Carrasco Villanueva Universidad Mayor de San Andrés (UMSA). Bolivia
  • Luis Fernando Quispe Instituto de Investigación y Desarrollo de Procesos Químicos, Ingeniería Química. Bolivia
  • Gunnar Lidén Lund University. Sweden

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

Biografía del autor

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.

Publicado
2018-10-26
Como citar
CARRASCO VILLANUEVA, Cristhian; QUISPE, Luis Fernando; LIDÉN, Gunnar. Study of sulphuric acid catalysed steam pretreatment of the hardwood anadenanthera colubrina. ENERLAC. Revista de energía de Latinoamérica y el Caribe, [S.l.], v. 2, n. 1, p. 56-70, oct. 2018. ISSN 2631-2522. Disponible en: <http://enerlac.olade.org/index.php/ENERLAC/article/view/60>. Fecha de acceso: 20 mayo 2019