Production, bleaching and characterization of pulp from Stipa tenacissima

Houcine Ammar (1) , Fatma Abdelkafi (1) , Souhir Abid (1) , Bouchra Benjelloum-Mlayah (2) , Rachid El Gharbi (1) , Michel Delmas (3)

1 Université de Sfax - University of Sfax
2 CIMV - Compagnie Industrielle de la Matière Végétale
3 LGC - Laboratoire de Génie Chimique

Alfa grass pulping was successfully performed in hydro-organic acid medium under mild conditions (107°C, atmospheric pressure, cooking time: 3 h). Use of an acetic acid/formic acid/water mixture as pulping liquor was perfectly suitable for selective isolation of pulp, lignin, and hemicelluloses. The unbleached pulp obtained in good yield was first delignified by peroxyacids in organic acid medium and then bleached with hydrogen peroxide in a basic medium to give pulp offering good physico-chemical and mechanical characteristics.

Mots clés: Stipa tenacissima; Alfa; Delignification; Bleaching

Domaines: Génie chimique; Génie des procédés

Houcine Ammar, Fatma Abdelkafi, Souhir Abid, Bouchra Benjelloum-Mlayah, Rachid El Gharbi, et al.. Production, bleaching and characterization of pulp from Stipa tenacissima. Chemistry of Natural Compounds, 2012, vol. 48, pp. 99-102. ⟨10.1007/s10600-012-0167-7⟩. ⟨hal-00878707⟩