|
|
|
|
|
| Farias,Fabiane Oliveira; Jasko,Ariana Crasnhak; Colman,Tiago André Denck; Pinheiro,Luís Antônio; Schnitzler,Egon; Barana,Ana Cláudia; Demiate,Ivo Mottin. |
| The main objective of this study was to characterise the cassava bagasse and to evaluate its addition in composites. Two cassava bagasse samples were characterised using physicochemical, thermal and microscopic techniques, and by obtaining their spectra in the mid-infrared region and analysing them by using x-ray diffraction. Utilising sorption isotherms, it was possible to establish the acceptable conditions of temperature and relative humidity for the storage of the cassava bagasse. The incorporation of cassava bagasse in a low-density polyethylene (LDP) matrix was positive, increasing the elasticity modulus values from 131.90 for LDP to 186.2 for 70% LDP with 30% SP bagasse. These results were encouraging because cassava bagasse could serve as a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manihot esculenta Crantz; Residue; Polymers. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600821 |
| |
|
|
| Beux,Simone; Nunes,Ezequiel; Barana,Ana Cláudia. |
| The effectiveness of the anaerobic treatment of effluent from a swine and bovine slaughterhouse was assessed in two sets of two-phase anaerobic digesters, operated with or without temperature control. Set A, consisting of an acidogenic reactor with recirculation and an upflow biological filter as the methanogenic phase, was operated at room temperature, while set B, consisting of an acidogenic reactor without recirculation and an upflow biological filter as the methanogenic phase, was maintained at 32°C. The methanogenic reactors showed COD (Chemical Demand of Oxygen) removal above 60% for HRT (Hydraulic Retention Time) values of 20, 15, 10, 8, 6, 4, and 2 days. When the HRT value in those reactors was changed to 1 day, the COD percentage removal decreased... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Effluent; Slaughterhouse; Treatment; Anaerobic; Two-phase. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700017 |
| |
|
|
| Oliveira,Tatiana Roselena de; Jaccoud-Filho,David de Souza; Henneberg,Luciana; Michel,Milton Domingos; Demiate,Ivo Mottin; Pinto,Alessandra Teixeira Barbosa; Machinski Junior,Miguel; Barana,Ana Cláudia. |
| This work had as objectives the study of the physical and mechanical characteristics of maize kernels in relation to the contamination by Fusarium sp and by zearalenone in twenty landraces of maize from the southern region of Brazil. From the analyzed samples, 60 % has been considered to have a hard endosperm type and 40 % an intermediary one. A correlation between the physical and mechanical variables was observed as an indication that the higher is the proportion of hard endosperm, more dense will be the kernel and more force for its rupture will be necessary. The level of contamination by Fusarium sp was between 5.5 and 24.75% among the analyzed grains, correlating positively with the flotation index, indicating that the landraces of maize with a softer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungi; Texture of endosperm; Corn landraces; Mycotoxins. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700002 |
| |
|
|
| Ribas,Maria Magdalena Ferreira; Barana,Ana Cláudia. |
| Manipueira, wastewater of cassava (Manihot esculenta) processing, can be treated by anaerobic biodigestion. To study the start-up process of a plug-flow digester for manipueira treatment, this work consisted of two stages: gradual decrease of the hydraulic retention time (HRT) to the preset time of 4 days or maintaining a fixed HRT of 4 days with gradual increase of the substrate concentration. A digester of 1980 mL capacity was opperated, at constant temperature (32 ± 1º C), with substrate pH corrected between 5.5 and 6.0. The first stage had durations of 16.6; 13.6; 11.6; and 9.6 days and the organic loads were 3.1; 2.0; 2.3; and 2.9 COD L-1 d-1, (chemical oxigen demand) respectively. The second stage was characterized by a fixed HRT (4 days) and organic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cassava; Anaerobic; Effluent; Biodigestion. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200004 |
| |
|
|
|
