Zobrazeno 1 - 10
of 234
pro vyhledávání: '"Nehemias Curvelo Pereira"'
Publikováno v:
International Journal of Chemical Engineering, Vol 2019 (2019)
Fruit consumption and processing result in considerable volumes of residual biomass. Transformation of this biomass into biosorbents offers an alternative for its reuse and disposal. As the green coconut shell is a waste often discarded in landfills
Externí odkaz:
https://doaj.org/article/ae6c2d19c15949c9a2c83b5f5129b56d
Autor:
Priscilla dos Santos Gaschi, Paola dos Santos Gaschi, Sueli Tereza Davantel Barros, Nehemias Curvelo Pereira
Publikováno v:
Acta Scientiarum: Technology, Vol 36, Iss 2, Pp 303-306 (2014)
In the present study, the sugar cane juice from COCAFE Mill, was clarified using tubular ceramic membranes (α-Al2O3/TiO2) with pore size of 0.1 and 0.3 µm, and membrane area of 0.005 m2. Experiments were performed in batch with sugar cane juice, in
Externí odkaz:
https://doaj.org/article/851057a0c50d432480983b7482025ec8
Autor:
Maraísa Lopes de Menezes, Camila Cristina Kunz, Polyana Perine, Nehemias Curvelo Pereira, Onélia Aparecida Andreo dos Santos, Sueli Teresa Davantel de Barros
Publikováno v:
Acta Scientiarum: Technology, Vol 35, Iss 2, Pp 291-298 (2013)
This study aimed to analyze the convective drying in fixed bed of yellow passion fruit bagasse. Firstly, the initial moisture of the bagasse was determined in stove, at 105 ± 3ºC for 24 hours. In the drying tests, it was collected the bagasse mass
Externí odkaz:
https://doaj.org/article/c49bb1cbde8843f4b49990f2700af9cc
Publikováno v:
Acta Scientiarum: Technology, Vol 35, Iss 1, Pp 83-88 (2013)
This study investigated the optimization of time of coagulation, flocculation, and sedimentation of the chemical coagulant, aluminum sulfate and natural coagulant, Tannin. It was performed an economic analysis of the process, checked the removal effi
Externí odkaz:
https://doaj.org/article/951b9c6e10b14adabed7d297a7efaee8
Autor:
Rafael Ferro, Maria Luiza Melchert de Carvalho e Silva, Nehemias Curvelo Pereira, José Carlos de Sousa
Publikováno v:
Acta Scientiarum: Technology, Vol 34, Iss 1, Pp 13-20 (2012)
Pellets made from sugarcane bagasse and molasses in weight proportions 1.0:0.5 and 1.0:1.0 (wt%) were water-steam activated during 1, 2 and 4h, at 850°C, by two processes, namely, (1) pyrolysis and activation in two different assays or (2) pyrolysis
Externí odkaz:
https://doaj.org/article/a1d65059ce5b46aba0583a09d165b1ff
Autor:
José Carlos de Sousa, Nehemias Curvelo Pereira, Maria Luiza Melchert de Carvalho e Silva, Rafael Ferro
Publikováno v:
Acta Scientiarum: Technology, Vol 34, Iss 1, Pp 13-20 (2011)
Pellets made from sugarcane bagasse and molasses in weight proportions 1.0:0.5 and 1.0:1.0 (wt%) were water-steam activated during 1, 2 and 4h, at 850°C, by two processes, namely, (1) pyrolysis and activation in two different assays or (2) pyrolysis
Externí odkaz:
https://doaj.org/article/b701299e999b4e8a92be8cf4906c563f
Publikováno v:
Acta Scientiarum: Technology, Vol 34, Iss 1, Pp 9-12 (2011)
After transesterification reaction, biodiesel and glycerin (the resulting co-product), coupled to reaction excesses and impurities, make up two distinct phases that must be separated. The use of ethanol as a transesterificating agent impairs the abov
Externí odkaz:
https://doaj.org/article/0b0c568768dc49cfa7122d3a58868bdc
Autor:
Maria Carolina Sérgi Gomes, Mariza Zanon Ferreira, Vinícius Passador Tonelli, Sueli Teresa Devantel de Barros, Nehemias Curvelo Pereira
Publikováno v:
Acta Scientiarum: Technology, Vol 33, Iss 4, Pp 415-419 (2011)
Neste trabalho foi avaliada a eficiência da microfiltração com membranas cerâmicas na separação de biodiesel e glicerina. Foram preparadas misturas sintéticas com composição mássica de 80% de biodiesel, 10% de glicerina e 10% de etanol anid
Externí odkaz:
https://doaj.org/article/bfd566e4649b4276b01299b7fa7fff71
Autor:
Sueli Teresa Devantel de Barros, Vinícius Passador Tonelli, Mariza Zanon Ferreira, Maria Carolina Sérgi Gomes, Nehemias Curvelo Pereira
Publikováno v:
Acta Scientiarum: Technology, Vol 33, Iss 4, Pp 415-419 (2011)
Neste trabalho foi avaliada a eficiência da microfiltração com membranas cerâmicas na separação de biodiesel e glicerina. Foram preparadas misturas sintéticas com composição mássica de 80% de biodiesel, 10% de glicerina e 10% de etanol anid
Externí odkaz:
https://doaj.org/article/b47237ba66ce4a06970221a932cca1c7
Autor:
Ricardo Wagner Mori Moreira, Grasiele Scaramal Madrona, Ivanise Guilherme Branco, Rosângela Bergamasco, Nehemias Curvelo Pereira
Publikováno v:
Acta Scientiarum: Technology, Vol 32, Iss 4, Pp 435-438 (2010)
A soja é um alimento rico em proteínas e seu custo é menor quando comparado à proteína animal. No entanto, ainda é pouco consumida, principalmente no Ocidente. O soro de queijo é um subproduto da indústria de laticínios, originado a partir d
Externí odkaz:
https://doaj.org/article/78db4fe28c02410a87afb4cb78749b22