Andrade, J.C.

Gonzalez-Pajuelo, M.

Vasconcelos, I.

English

Repositório Institucional da Universidade Católica Portuguesa

. FerreiraS. Feyo de • evedo E.E ropean Federati•n of Bi•,technol•,gySection on Bi•chemical Engindering Science97th Ev-nt of the urosean federation of Biotechkol gyEdite•by'-:1'9.	 €2-tei tti, 4, ,,Porto Po.raiia2nd European Symposium on Biochemical Engineering Science - 	 Ent*manzental ProcessesPorto. 16-19 September 1998	 ParlorGlycerol bioconversion to 1,3-propanediol by Clostridium butyricum incontinuous cultures with cell recycleM. Gonzalez-Pajuelo, J.C. Andrade and I. Vasconcelos*Escola Superior de Biotecnologia, Porto, PORTUGALKeywords: glycerol, 1,3-propanediol, Cl. butyricum, cell recycleThe production of biodiesel, a less pollutant fuel, generates glycerol as a by-product. Thus thisglycerol can be consider as a cheap renewable resource to obtain a chemical more in demand suchas 1,3-propanediol which can be used as a monomer on biodegradable polymers synthesis.It has been shown that Costridium butyricum is able to ferment glycerol to 1,3- propanediol.Continuous cultures of Cl.butyricum VPI 1718 were performed at pH= 6.5 and D= 0.1 h-1, usingglycerol as sole carbon source. Low-grade glycerol of diferent purity degrees were also used(without prior purification), with results similar to those observed with commercial glycerol (0.65mol L3-propanediol/ mol glycerol).A flat-plate membrane ultrafiltration unit is being used in a continuous cultures system to recyclebiomass. An improvement in 1,3-propanediol yield and productivity was achieved. Low gradeglycerol will also be used in this system.331

Glycerol bioconversion to 1,3-propanediol by Clostridium butyricum in continuous cultures with cell recycle

https://repositorio.ucp.pt/bitstream/10400.14/5585/1/1998_ESB_Vasconcelos_Isabel-dig3.PDF

Glycerol bioconversion to 1,3-propanediol by Clostridium butyricum in continuous cultures with cell recycle

Abstract

Similar works

Full text

Available Versions

Repositório Institucional da Universidade Católica Portuguesa