Consulta: subjectFacets:"Calcium oxide"
Registros recuperados: 4
Data/hora: 05/06/2024 18:20:24

Chemical treatment of roughage
Provedor de dados: 96
Autores: Pires,Aureliano José Vieira; Carvalho,Gleidson Giordano Pinto de; Ribeiro,Leandro Sampaio Oliveira.
Chemical treatment of roughage has been the aim of studies for a long time. However, until nowadays, many questions are arisen due to the efficiency of additives used in relation to the variation of answers, either in nutritive value of treated roughage or in performance of animals feed with diet containing such roughage. This revision will approach the main and most used products, which are anhydrous ammonia, urea, sodium hydroxide and calcium oxide. It has been noticed that ammonization (both for anhydrous ammonia and urea) has presented more efficient result in animal's performance when compared with sodium hydroxide or calcium oxide. However, regarding its nutritive value, both sodium hydroxide and calcium oxide have presented a higher efficiency in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Calcium oxide; Sodium hydroxide; Urea.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300022

Chemical composition and fermentative losses of sugar cane ensilage with different Brix degrees, with or without calcium oxide
Provedor de dados: 96
Autores: Magalhães,Felipe Antunes; Valadares Filho,Sebastião de Campos; Menezes,Gustavo Chamon de Castro; Machado,Marcelo Grossi; Zanetti,Diego; Pina,Douglas dos Santos; Pereira,Odilon Gomes; Paulino,Mário Fonseca.
The objective of this study was to evaluate the effect of sugar cane ensilage with different Brix degrees, with or without the addition of 0.5% of calcium oxide (lime) on the chemical composition and fermentation losses of silages. A complete random design in a 9 × 2 factorial arrangement was used. Experimental silos were used, ensilage was done every 15 days with Brix measuring, and they were opened after 30 days of fermentation. As the Brix degree of the ensiled material increased, the contents of dry matter (DM) increased and contents of ash, crude protein (CP) and fibers (neutral and acid detergent fiber corrected for proteins - NDFap and ADFap) reduced. After fermentation, DM content of the silage presented a linear increase with the Brix degree...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brix; Calcium oxide; Ethanol; Sugar cane silage.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200004

Nutritive value of sugarcane silage treated with chemical additives
Provedor de dados: 63
Autores: Santos,Mateus Castilho; Nussio,Luiz Gustavo; Mourão,Gerson Barreto; Schmidt,Patrick; Mari,Lucas José; Ribeiro,José Leonardo; Queiroz,Oscar Cézar Müller; Zopollatto,Maity; Sousa,Daniel de Paula; Sarturi,Jhones Onorino; Toledo Filho,Sérgio Gil de.
The use of ensiled sugarcane has been increased lately in Brazil due to the benefits that this technique represents. The objective of this study was to evaluate the effects of chemical additives on the nutritive value of sugarcane silages. The trial was carried out in a completely randomized experimental design with four replicates per treatment. The following additives were applied onto the fresh forage before ensiling: L. buchneri, lime or limestone, 1.0 and 1.5% (wet basis) each, and gypsum 1.0% (wet basis), all of them diluted into 40 L of water per ton of fresh weight of forage. The analyzed variables were: ash, crude protein, neutral detergent fiber, acid detergent fiber and organic and dry matter digestibility. The addition of lime or limestone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium carbonate; Calcium oxide; Calcium sulfate.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000200003

Waste shells of Chicken and Guinea fowl eggs as catalysts for the production biodiesel
Provedor de dados: 111
Autores: Oyelaran, Olatunde Ajani.
Raw material costs are responsible for the greater percentage of biodiesel production cost. In this research chicken and guinea fowl wastes eggshell were used as feedstock for the producing heterogeneous catalyst for production of biodiesel. Proceeding their utilization, calcium oxide (CaO) was obtained by calcining the eggshells which contains calcium carbonate (CaCO3) in a muffle furnace at of 1000 for four hours. The solid oxide catalyst produced were then characterized by the Brunauer-Emmett-Teller (BET) and XRF methods. The activity of the produced catalyst in transesterification of calabash seed oil with methanol was assessed, and the properties of biodiesel obtained were evaluated. The various effect of reaction time, reaction temperature,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Eggshell wastes; Calcium oxide; Transesterification; Heterogeneous catalyst.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6155