Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Kelly Roberta Spacino"'
Autor:
Julyane Karolyne Teixeira da Costa, Karina Gomes Angilelli, Kelly Roberta Spacino, Elisangela Tavares da Silva, Livia Ramazzoti Chanan Silva, Dionisio Borsato
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 37, Iss 1, Pp 107-118 (2016)
The process of obtaining B100 biodiesel from vegetable oil and animal fat mixtures by transesterification under basic conditions was optimised using the super-modified simplex method. For simultaneous optimisation, yield, cost, oxidative stability an
Externí odkaz:
https://doaj.org/article/cc6bebae41824394a82714ce3e681085
Autor:
Elisangêla Tavares Silva, Kelly Roberta Spacino, Lívia Ramazzoti Chanan Silva, Érica Signori Romagnoli, Karina Gomes Angilelli, Dionisio Borsato
Publikováno v:
Acta Scientiarum: Technology, Vol 40, Iss 1, Pp e35108-e35108 (2018)
Antioxidants are an alternative to prevent or retard the degradation of biofuels. In this study was utilized biodiesel obtained from the soybean oil transesterification, by methylic route, using sodium methoxide as catalyst. The synthetic antioxidant
Externí odkaz:
https://doaj.org/article/70407764d96b4389a764fe65643fe693
Autor:
Vilson Machado de Campos Filho, Kelly Roberta Spacino, Érica Signori Romagnoli, Lívia Ramazzoti Chanan Silva, Dionisio Borsato
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 36, Iss 2, Pp 63-70 (2015)
The 97 samples were grouped according to the year of analysis. For each year, letters from A to D were attributed, between 2010 and 2013; A (33) B (25) C (24) and D (15). The parameters of compliance previously analyzed are those established by the N
Externí odkaz:
https://doaj.org/article/01e41b3531e94fdb9d253c8752f0439e
Autor:
Caroline de Souza Cardoso, Kelly Roberta Spacino, Elisângela Tavares da Silva, Cezar Henrique Furtoso Rodrigues, Karina Gomes Angilelli, Ivanira Moreira, Dionisio Borsato
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 36, Iss 1, Pp 3-10 (2015)
The fermentation conditions were established and an incomplete Box-Behnken factorial design was applied. The independent variables used were yeast extract, yeast and NH4H2PO4, and the alcohol yield obtained was optimized. The validity of the model fo
Externí odkaz:
https://doaj.org/article/ea34fa122e334631ab29e746ba157cae
Autor:
Diego Galvan, Juliane R. Orives, Rodolfo L. Coppo, Cezar Henrique F. Rodrigues, Kelly Roberta Spacino, Jurandir P. Pinto, Dionísio Borsato
Publikováno v:
Química Nova, Vol 37, Iss 2, Pp 244-248 (2014)
The quality of biodiesel is extremely important for its commercialization and use; oxidation of biodiesel is a critical factor because it decreases the fuel storage time. A commercial biodiesel was mixed with synthetic antioxidants, according to a si
Externí odkaz:
https://doaj.org/article/62a8cdf64bb442ae80d92eba624bd9f0
MODELAGEM E SIMULAÇÃO DA DIFUSÃO MULTICOMPONENTE DURANTE A DESIDRATAÇÃO OSMÓTICA EM PEDAÇOS DE MELÃO
Autor:
Dionísio BORSATO, Célia Guadalupe Tardeli de Jesus ANDRADE, Pedro Paulo de Almeida PACCOLA, Marcos Vinicios Roberto PINA, Juliane Resges ORIVES, Kelly Roberta SPACINO
Publikováno v:
Alimentos e Nutrição, Vol 22, Iss 3, Pp 379-389 (2011)
A perda de água e o ganho de açúcar foram modelados durante o processo de desidratação osmótica de pedaços de melão. A transferência de soluto para a fruta e de água para a solução, foi modelada com base na 2ª Lei generalizada de Fic
Externí odkaz:
https://doaj.org/article/6a16a7c533bf4d30b70137916ad95bd8
Autor:
Kelly Roberta Spacino, Gabriel Henrique Dias, Jurandir Pereira Pinto, Ivanira Moreira, Carmen Luisa Barbosa Guedes, Dionisio Borsato
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 31, Iss 1, Pp 3-13 (2010)
The optimization of the yield of transesterification reaction to obtain the B100 biodiesel has been studied using sodium hydroxide, potassium hydroxide, methoxide and sodium ethoxide as catalysts. We applied a randomized simplex centroid mixture and
Externí odkaz:
https://doaj.org/article/f898d8f0b1504a11bda39399b1683a01
Autor:
Dionísio Borsato, Luiz Henrique Dall'Antonia, Carmen Luísa B. Guedes, Elaine Cristina R. Maia, Heverson Renan de Freitas, Ivanira Moreira, Kelly Roberta Spacino
Publikováno v:
Química Nova, Vol 33, Iss 8, Pp 1726-1731 (2010)
Antioxidants are an alternative to prevent or slow the degradation of the biofuel. In this study, it was evaluated the oxidative stability of B100 biodiesel from soybean oil in the presence of three commercial synthetic antioxidants, butylated hydrox
Externí odkaz:
https://doaj.org/article/dafe2197d46e49c38dabd9424d2b5536
Autor:
Dionisio Borsato, Carmen Luisa Barbosa Guedes, Ivanira Moreira, Jurandir Pereira Pinto, Gabriel Henrique Dias, Kelly Roberta Spacino
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 31, Iss 1 (2010)
A otimização do rendimento da reação de transesterificação de obtenção do biodiesel B100 foi estudada utilizando hidróxido de sódio, hidróxido de potássio, metóxido e etóxido de sódio como catalisadores. Foi aplicado o delineamento exp
Externí odkaz:
https://doaj.org/article/1e966d9f86fa42eeac4cd11cfcb5c7e1
Autor:
Gustavo Galo Marcheafave, Ana Carolina Gomes Mantovani, Dionísio Borsato, Karina Benassi Angilelli, José Gonçales Filho, Kelly Roberta Spacino
Publikováno v:
Revista Virtual de Química. 12:840-851
Since biodiesel has unsaturated esters in its composition, it is susceptible to oxidation reaction. Studies have shown that small traces of transition metals are able to promote biodiesel oxidation. Biodiesel samples containing Cr3+, Co2+, Fe2+ and F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::deb4d53ef9e89e2ffe9e312955546426
https://doi.org/10.21577/1984-6835.20200083
https://doi.org/10.21577/1984-6835.20200083