Sulfur balance of sulfur dioxide-ethanol-water fractionation of sugarcane straw

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • University of Maine
  • American Process Inc.

Kuvaus

The sulfur balance of SO2-ethanol-water (AVAP®) fractionation of sugarcane (SC) straw was investigated. Hydrogen sulfite and sulfite anions are nearly absent in the liquors, despite cations present in straw, whose effect is thus limited to neutralization of lignosulfonic acids decreasing the acidity. Higher degree of sulfonation was observed for dissolved straw lignin compared to wood lignin (0.8–0.9 vs. 0.25 S/C9). Sulfur dioxide amounts of 0.9–1.2, 4.1–4.3 and 44–49 g per o.d. kg straw were bound to pulp, precipitated lignin and lignosulfonic acid, respectively, while the rest of SO2 was recovered by distillation from the spent fractionation suspensions.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut998-1002
Sivumäärä5
JulkaisuBioresource Technology
Vuosikerta241
TilaJulkaistu - 1 lokakuuta 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 14387395