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Lipophilic extracts, chemical substrates and biogas production from sugarcane bagasse by green technologies in a biorefinery concept

Grant number: 18/23835-4
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): December 01, 2019
Effective date (End): November 30, 2021
Field of knowledge:Engineering - Chemical Engineering - Chemical Process Industries
Principal Investigator:Rubens Maciel Filho
Grantee:Daniel Lachos Perez
Home Institution: Faculdade de Engenharia Química (FEQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:15/20630-4 - Biorefinery development integrated to a bioethanol sugar cane plant with zero CO2 emission: routes to convert renewable resources to bio-products and bio-electricity, AP.TEM

Abstract

The increasing demand for products from green process has promoted the development of products that are produced through environmentally friendly techniques and supply the needs of the consumers. Thus, the integration of different processes in order to obtain different products with higher concentration of target compounds from the same raw material can be considered as a way to attend such expectations. It is known that sugarcane bagasse has been used as a source for the production of steam in the mills and 2G ethanol production. However, due to the large number of substances with different chemical characteristics reported in this matrix, the possibility of integrating processes and obtaining different products is evident. Thus, the objective of this proposal is the production of different chemical platforms from bagasse, including lipophilic extracts, chemical substrates and biogas. The present proposal is strategically structured in three stages that are integrated with the concept of biorefinery: first, a pre-treatment of bagasse with supercritical CO2 (scCO2) will be carried out with the aim of obtaining lipophilic extracts. Subsequently, the second stage has the objective of performing the hydrothermal process to obtain a substrate rich in hemicellulosic sugars using as raw material the pre-treated bagasse in the previous stage. Finally, the third stage of this proposal aims to obtain biogas by anaerobic digestion technology under mesophilic conditions, using as substrate the extract obtained in the second step. As such, the ultimate goal of this proposal is to increase the economic competitiveness of 2G ethanol in the fuels market. Different approaches will be studied in order to increase the efficiency of the process efficiency at each stage of the project. (AU)