A novel process for CO2 purification and recycling based on subcritical adsorption in oat bran

Author(s)

Torres, R. Abel C. ^{[1, 2]} ; Santana, Adina L. ^[3] ; Santos, Diego T. ^[1] ; Albarelli, Juliana Q. ^[1] ; Meireles, M. Angela A. ^[1]

Affiliation

^[1] Univ Estadual Campinas, Sch Food Engn, UNICAMP, LASEFI, DEA, FIA, R Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

^[2] Natl Univ Peruvian Amazon UNAP, Fac Food Ind FIA, Food Engn Dept DIA, Jiron Nauta 16002, Iquitos - Peru

^[3] Univ Estadual Campinas, Sch Food Engn, Bioproc Lab, UNICAMP, DEPAN, FEA, R Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF CO2 UTILIZATION; v. 34, p. 362-374, DEC 2019.
• Web of Science Citations: 0

Abstract

A novel process for the purification and recycling of CO2 (PRCO2) in a pilot scale unit was implemented and validated. The system is a 4-cycle pseudocontinuous process composed of on-line supercritical fluid extraction integrated with fractionation of extracts in three separation vessels, followed by purification of CO2 in adsorption column at subcritical conditions, and subsequent recycling of the purified CO2 with the aid of a storage tank. Turmeric and annatto were the plant matrices used for extraction and oat bran was used as adsorbent. The PRCO2 reduced the consumption of CO2 in 85.24% for annatto and 74.27% for turmeric, representing monetary savings of USD 186.40 and USD 111.83, respectively. Economical evaluation showed that the increasing of the number of cycles decreased the cost of manufacture from USD 349.60/kg to 122.67/kg for the processing of annatto and USD 91.31/kg to USD 36.56/kg for the processing of turmeric. (AU)

• FAPESP's process: 15/13299-0 - From seeds to final products: feasible manufacturing routes of annatto applying process intensification and process integration
• Grantee: Maria Angela de Almeida Meireles Petenate
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/18114-2 - Integral utilization of biomasses using sub/supercritical fluids: environmental, energetic and economic assessment of technological scenarios
• Grantee: Juliana Queiroz Albarelli
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 15/06954-1 - Development of an energetic self-sufficient and economically viable integrated sub/supercritical fluid-based biorefinery by the aid of computational modeling and simulation
• Grantee: Juliana Queiroz Albarelli
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor