Biodegradation of biodiesel/diesel blends by Candida viswanathii

Made available in DSpace on 2013-08-28T14:09:48Z (GMT). No. of bitstreams: 1 WOS000268831200019.pdf: 455433 bytes, checksum: 74b4a366827f83d1a3b3db22103227ea (MD5) Made available in DSpace on 2013-09-30T18:47:39Z (GMT). No. of bitstreams: 2 WOS000268831200019.pdf: 455433 bytes, checksum: 74b4a366827f83d1a3b3db22103227ea (MD5) WOS000268831200019.pdf.txt: 23436 bytes, checksum: 6dab3bf68ed45c4689a5b8a1286873f7 (MD5) Previous issue date: 2009-06-17 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:56:31Z No. of bitstreams: 2 WOS000268831200019.pdf: 455433 bytes, checksum: 74b4a366827f83d1a3b3db22103227ea (MD5) WOS000268831200019.pdf.txt: 23436 bytes, checksum: 6dab3bf68ed45c4689a5b8a1286873f7 (MD5) Made available in DSpace on 2014-05-20T13:56:31Z (GMT). No. of bitstreams: 2 WOS000268831200019.pdf: 455433 bytes, checksum: 74b4a366827f83d1a3b3db22103227ea (MD5) WOS000268831200019.pdf.txt: 23436 bytes, checksum: 6dab3bf68ed45c4689a5b8a1286873f7 (MD5) Previous issue date: 2009-06-17 Agência Nacional do Petróleo, Gás Natural e Biocombustíveis (ANP) Gas Natural e Biocombustiveis (ANP) This work is aimed to assess the aerobic biodegradation of biodiesel/diesel blends (0, 2, 5, 20 and 100%, v/v) by Candida viswanathii. The biodegradation potential of the inoculum was assessed with the redox indicator 2,6-dichlorophenol indophenol (DCPIP) test and with respirometric experiment in biometer flasks (250 mL) used to measure the microbial CO(2) production. In the latter, the inoculum was added to a contaminated soil with the blends (addition of 50 mL of fuel/Kg of soil from a non-contaminated site). C. viswanathii was able to increase significantly (approximately 50% in terms of CO(2) production) the biodegradation in soil of biodiesel/diesel blends and neat biodiesel since it preferable biodegrades biodiesel. Without inoculum the biodegradation of diesel oil was higher than biodiesel and blends (47.3, 51.1, 5.7 and 22.1% in terms of CO(2) production by B2, B5, B20 and B100, respectively) presumably due to the presence of the antioxidant terc-butyl-hydroquinone (TBHQ) in the biodiesel. São Paulo State Univ, UNESP, Inst Biosci, Dept Biochem & Microbiol, BR-13506900 Rio Claro, SP, Brazil São Paulo State Univ, UNESP, Inst Biosci, Dept Biochem & Microbiol, BR-13506900 Rio Claro, SP, Brazil ANP: PRH-05