Compared exergy analysis of sugarcane bagasse sequential hydrolysis and fermentation and simultaneous saccharification and fermentation

Author(s)

Ortiz, Pablo Silva ; de Oliveira, Silvio, Jr.

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF EXERGY; v. 19, n. 4, p. 22-pg., 2016-01-01.

Abstract

This paper presents the compared exergy analysis of the enzymatic hydrolysis of sugarcane bagasse through Sequential Hydrolysis and Fermentation-SHF and Simultaneous Saccharification and Fermentation-SSF configurations to obtain lignocellulosic ethanol. Four pre-treatment processes were considered: Steam Explosion-SE, Organosolv, Liquid Hot Water-LHW, and a combined SE and LHW method. The pre-treatments analysed simultaneously with the SHF (Cases 1, 3, 5 and 7) and SSF (Cases 2, 4, 6 and 8) configurations were carried out for the overall system focus on the wine production. Processes simulations were performed by using Aspen Plus (R) to a plant with 500 t/h milling capacity. The results for SHF configurations in terms of exergy efficiency rate were 60.0% for case 1, 56.5% for case 3, 58.3% for case 5 and 59.4% for case 7. For SSF configurations, the exergy efficiency obtained in case 2, case 4, case 6 and case 8 were 62.4%, 58.3%, 60.3% and 61.5%, respectively. (AU)

• FAPESP's process: 12/23049-2 - EXERGY AND ENVIRONMENTAL RANKING OF BIOETHANOL PRODUCTION ROUTES
• Grantee: Pablo Andrés Silva Ortiz
• Support Opportunities: Scholarships in Brazil - Doctorate