Análise Energética De Sistemas De Produção De Etanol De Mandioca, Cana-De-Açúcar E Milho

Salla, Diones Assis; Cabello, Cláudio

doi:10.17224/energagric.2010v25n2p32-53

Cited by 21 publications

(9 citation statements)

References 3 publications

(3 reference statements)

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“…The cassava plant (Manihot esculenta Crantz) is originally from South America and is regarded as a low input crop (Salla and Cabello, 2010). Its tuberous roots, rich in starch, are used in human and animal feeding.…”

Section: Introductionmentioning

confidence: 99%

Digestible energy of unpeeled cassava root meal and its effect on growth performance and carcass traits in rabbits

et al. 2014

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Two experiments were conducted to evaluate the use of cassava root meal (891 g dry matter [DM]/kg, 639 g starch/kg, 74.1 g neutral detergent fibre [NDF]/kg, and 26.6 g crude protein [CP]/kg) in diets for growing rabbits. In the first experiment, a basal diet (419 g NDF/kg and 181 g CP/kg) and a test diet, in which cassava replaced 25% of the DM of the reference diet, were used. Twenty 50-d-old New Zealand White rabbits weighing 1474±10 g were randomly assigned to the 2 treatments, and digestibility of DM and gross energy (GE) were determined. The inclusion of cassava root meal in the diet increased DM digestibility (67.0±0.80 vs. 58.0±1.12%, P<0.01) and digestible energy (DE) content (11.86±0.16 vs. 10.45±0.22 MJ/kg, P<0.01). Digestible DM and DE contents of the unpeeled cassava root meal, obtained by the substitution method, were 943.3±15.8 g/kg and 15.28±0.32 MJ/kg. In the second experiment, 5 experimental diets were formulated to contain 150 g CP/kg, 184 g acid detergent fibre/kg and 10.9 MJ DE/kg, and increasing levels (0, 7, 14, 21 and 28%) of unpeeled cassava root meal, mainly in substitution of corn. A growth trial was carried out using 90 rabbits from the Botucatu genetic group from weaning (35 d, weighing 951±13 g) up to 71 d of age. The rabbits were housed in pairs, and randomly assigned to the 5 treatments (9 replicates/ treatment). No effect of the substitution of corn with cassava root meal was detected on growth performance (growth rate, feed intake and feed conversion ratio, on av. 44.6±0.50 g/d, 132±1.4 g/d and 2.97±0.028 g/g, respectively). The level of inclusion of cassava root meal had a quadratic effect (P=0.005) on the dressing out percentage, showing a minimal value (51.2%) for inclusion of 139 g/kg. No other effect was observed on slaughter and reference carcass weights (2383±19 and 1238±11 g, respectively). Unpeeled cassava root meal may be used to completely replace corn in the diet, supporting high performance in growing rabbits, but its effects on carcass traits should be investigated further.

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Section: Introductionmentioning

confidence: 99%

Digestible energy of unpeeled cassava root meal and its effect on growth performance and carcass traits in rabbits

et al. 2014

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“…The use of cassava as a carbohydrate source for ethanol production has become a reference to the sugar cane culture because it competes with not inconsiderable advantages (Camacho, 2009). Salla & Cabello (2010) confirmed that cassava consumes less energy than cane sugar in the categories: energy expenditure for agronomic production, industrial processing of raw materials per liter of ethanol produced, resulting in a final energetic more favorable.…”

Section: Revista Brasileira De Tecnologia Agroindustrialmentioning

confidence: 78%

Modelling of a Fermentation Process to Obtain Alcohol From Hydrolyzed of Cassava

Praxedes

Koop

2015

RBTA

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he following work is about the creation of two computer programs, one for simulation and one for parameter estimation of fermentation processes from cassava hydrolyzed in a batch system. The first program estimates the biomass, substrate and product concentration at different times during a fermentation process. The other program performs adjustments at the mathematical model to provide great kinetics parameters from the comparison among data calculated by the program and data obtained in the literature. Based on comparison of results with literature data, it can be stated that the programs provide a true representation of the fermentation process. The structure of the programs developed allows its use for simulating and providing data of different fermentation processes changing only the input data and equations involving the kinetics.

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“…An important point to note, especially when analyzing the sustainability and competitiveness of ethanol production, is the consumption and how to obtain the energy used in industrial steps. In a published study [13] the authors state that the industrial processing of a ton of sugarcane, to obtain 85 L of ethanol consumes 1641.56 MJ, while processing a ton of corn produces 352 L of ethanol and consumes 3882.39 MJ of energy. These data become important when placed in the analysis of sugarcane bagasse that is the main source of supply of thermal and electric energy for ethanol production in the plants.…”

Section: Sugarcane Ethanol and Corn Ethanol Production In The Midwestmentioning

confidence: 99%

Flexible Ethanol Production: Energy from Sugarcane Bagasse Might Help the Sustainability of Biofuels

Shibuya

Nääs

Neto

2015

Advances in Production Management Systems: Innovative Production Management Towards Sustainable Growth

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The ethanol industry in Brazil is going through a period of stagnation, resulting in the reduction of ethanol supply. The ethanol for automotive purposes may be anhydrous, which is used as an anti-detonating additive to gasoline; and hydrated ethanol, which can be used in the flex-fuel vehicles, which can use the biofuel, gasoline or a mixture of both in any proportion. This study is aimed to analyze the contribution that energy from the sugarcane bagasse could bring to the production of corn ethanol in plants adapted to operate with both sugarcane and the cereal. Therefore, it was considered, the surplus energy from sugarcane biomass and maize availability in the producing region. At the end of the article, the results are discussed by providing an analysis of the application of corn as alternative raw material for the production of ethanol in Brazil.

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Análise Energética De Sistemas De Produção De Etanol De Mandioca, Cana-De-Açúcar E Milho

Cited by 21 publications

References 3 publications

Digestible energy of unpeeled cassava root meal and its effect on growth performance and carcass traits in rabbits

Digestible energy of unpeeled cassava root meal and its effect on growth performance and carcass traits in rabbits

Modelling of a Fermentation Process to Obtain Alcohol From Hydrolyzed of Cassava

Flexible Ethanol Production: Energy from Sugarcane Bagasse Might Help the Sustainability of Biofuels

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