Aiming to add knowledge to the search for new possibilities of alternative biomass to the biomasses that are already adopted by the sugar-energy industries, this work sought to analyze the possibility of using cassava husks that are residues from the production of starch to obtain fuel ethanol. Treatments to optimize the acid hydrolysis process were carried out, having as variants the concentration of sulfuric acid with 1%, 3% and 5% (m/v), the sieve granulometry varying in 16, 24 and 32 mesh, also having different autoclaving times varying from 10, 35 and 60 minutes with cassava husks (Manihot esculenta Crantz), in order to obtain a broth with a high content of fermentable sugars. Therefore, it was possible to verify that the use of cassava husks (cassava plant residues) as sources for obtaining ethanol have promising properties using a concentration of 5% sulfuric acid, a 32 mesh sieve and autoclaving the samples for a period of 22.5 minutes.
Broilers production suffered, due to major investments in technology and genetic development in recent decades, to adapt to the conditions and requirements of the national and world market. Studies on the production systems of reraring show the importance of the economy in the sector, which is one of the most competitive in the agribusiness sector. The present work aimed at studying two dark house aviaries construction, with and without thermal insulation, to evaluate the variations in temperature, gas consumption, and effect of the insulation. Both facilities were checked for temperature variation, using J-type thermocouple sensors and recording in datalogger; LPG consumption, and the production performance considering mortality of birds, feed consumption, water intake, and weight gain. It was concluded that the Dark House with Thermal Insulation (DHTI) aviary showed better broiler birds performance indexes, lower mortality, and greater weight gain. But when it comes to performance in the face of temperature conditions, the Conventional Dark House (CDH) aviary showed values better suited to the production, as noted in the bibliographic references.
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