| Full text | |
| Author(s): |
Rostagno, Mauricio A.
[1]
;
Prado, Juliana M.
[1]
;
Mudhoo, Ackmez
[2]
;
Santos, Diego T.
[1]
;
Forster-Carneiro, Tania
[1]
;
Meireles, M. Angela A.
[1]
Total Authors: 6
|
| Affiliation: | [1] Univ Estadual Campinas, LASEFI DEA FEA, Sch Food Engn, UNICAMP, BR-13083862 Campinas, SP - Brazil
[2] Univ Mauritius, Fac Engn, Dept Chem & Environm Engn, Reduit - Mauritius
Total Affiliations: 2
|
| Document type: | Review article |
| Source: | CRITICAL REVIEWS IN BIOTECHNOLOGY; v. 35, n. 3, p. 302-312, 2015. |
| Web of Science Citations: | 13 |
| Abstract | |
There is increased interest in reducing our reliance on fossil fuels and increasing the share of renewable raw materials in our energy supply chain due to environmental and economic concerns. Ethanol is emerging as a potential alternative to liquid fuels due to its eco-friendly characteristics and relatively low production costs. As ethanol is currently produced from commodities also used for human and animal consumption, there is an urgent need of identifying renewable raw materials that do not pose a competitive problem. Lignocellulosic agricultural residues are an ideal choice since they can be effectively hydrolyzed to fermentable sugars and integrated in the context of a biorefinery without competing with the food supply chain. However, the conventional hydrolysis methods still have major issues that need to be addressed. These issues are related to the processing rate and generation of fermentation inhibitors, which can compromise the quality of the product and the cost of the process. As the knowledge of the processes taking place during hydrolysis of agricultural residues is increasing, new techniques are being exploited to overcome these drawbacks. This review gives an overview of the state-of-the-art of hydrolysis with subcritical and supercritical water in the context of reusing agricultural residues for the production of suitable substrates to be processed during the fermentative production of bioethanol. Presently, subcritical and/or supercritical water hydrolysis has been found to yield low sugar contents mainly due to concurrent competing degradation of sugars during the hydrothermal processes. In this line of thinking, the present review also revisits the recent applications and advances to provide an insight of future research trends to optimize on the subcritical and supercritical process kinetics. (AU) | |
| FAPESP's process: | 10/08684-8 - Hydrolysis of sugarcane bagasse and palm pressed fiber with sub/supercritical water and CO2: technical and economical evaluation |
| Grantee: | Juliana Martin Do Prado |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 11/19817-1 - Biorefinery in agricultural and food industry: recycling waste for production of new chemicals componds and biohydrogen |
| Grantee: | Tânia Forster Carneiro |
| Support Opportunities: | Program for Research on Bioenergy (BIOEN) - Young Investigators Grants |
| FAPESP's process: | 12/19304-7 - Brazilian ginseng biorefinery: simulation and multi-objective optimization |
| Grantee: | Diego Tresinari dos Santos |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 10/16485-5 - Technical and economic evaluation of the integration of sustainable processes for a better use of brazilian ginseng (Pfaffia glomerata) |
| Grantee: | Diego Tresinari dos Santos |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |