Análise físico-química e energética do resíduo da terra diatomácea utilizada como auxiliar de filtração na indústria de cerveja
Carregando...
Data
2006-02-17
Autores
Pimentel, Paulo Alexandre [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
É sabido da existência de limites no meio ambiente e da capacidade de absorver e reciclar matéria ou resíduos, diante desta problemática, o escopo deste projeto de pesquisa foi desenvolver uma metodologia capaz de reutilizar os RTD de cervejaria, uma vez que não existe um tratamento e/ou uma destinação adequada. Foram realizados ensaios de DQO para determinar o potencial de poluição do RTD; análises de sólidos totais e sólidos totais fixos; umidade; tempo de decantação em provetas; seguidos de calcinação em mufla do RTD. Nas análises de sólidos totais, sólidos totais fixos e umidade foram determinados a eficiência no processo de recuperação do RTD. Na etapa de decantação foram estudados o tempo necessário para separar o RTD do sobrenadante. Nos ensaios de calcinação foram estudados a diferença no tempo de residência em mufla e comparados com o processo CETEM. A TDR obtida do processo de calcinação foram submetidas a análises de densidade aparente, superfície específica, umidade, perda ao fogo, pH, teor de sílica, aluminio, ferro, cálcio, sódio, potássio, magnésio e comparadas com as terras diatomáceas de uso corrente no mercado. A TDR e a TDP foram classificadas em peneiras vibratórias e submetidas a ensaios tecnológico de filtração a nível laboratorial com cerveja do tipo Pilsen sem filtrar produzida no Laboratório 2 de Bebidas da Faculdade de Ciências Agronômicas do Campus de Botucatu. O filtrado resultante foram submetidos a análises de turbidez, cor e contagem de células e comparados com a testemunha. Nas análises realizadas foram obtidos os seguintes resultados: DQO 121.667 mg L-1 e 62.500 mg L-1; sólidos totais 28,37%; sólidos totais fixos 22,17%; umidade 71,65%; tempo de decantação de 80 minutos; diferença no tempo de calcinação de 0,5 horas, reduzindo em 66,70% o consumo de energia elétrica; sílica 98,70% na TDR...
It is known that there is a limit in the environment an the capacity to absorb and recycle substance or waste, hence, the purpose of this research was to develop a method which could reuse RTD in the beer industry. It was accomplished DQO test to determine the pollution potential of the RTD; total solid, fixed total solid and humidity analysis, period of the decantation in cylinder test; followed by calcination in the oven of the RTD. In the total solid, fixed total solid and humidity test it was determinated efficiency on the process of recuperation of RTD. Yet, in the stage of decantation it was studied the necessary time to separate the RTD of that solution. And in the calcination test it was studied the difference in the residence time period in oven and compared with CETEM process. The TDR obtained from the calcination process was analyzed its apparent density, specific surface, humidity, fire loss, pH, silicon, aluminium, iron, calcium, sodium, potassium, magnesium and it was compared with diatomaceous earth of the commercial current use. The TDR and TDP were classified in vibrant strainer and submitted to the technological filtration test in laboratory scale with beer type Pilsen before being filtered which has been produced in beverage laboratory of that Science Agronomic Faculty in Botucatu. The filtered was submitted to haste, color and counting of cells analyses and compared with testimony. In the accomplished test it was obtained the following results: DQO 121.667 mg L-1 e 62.500 mg L-1; total solid 28,37%; fixed total solid 22,17%; humidity 71,65%; decantation time 80 minutes; calcination difference time 0,5 hour, reducing the 4 electronics consumpition in 66,70%; silicon 98,70% in TDR; filtered it showed acceptability in the haste analyses, color and counting of cells. At the end of the research it was established that with the adoption of the SGA... (Complete abstract click electronic access below)
It is known that there is a limit in the environment an the capacity to absorb and recycle substance or waste, hence, the purpose of this research was to develop a method which could reuse RTD in the beer industry. It was accomplished DQO test to determine the pollution potential of the RTD; total solid, fixed total solid and humidity analysis, period of the decantation in cylinder test; followed by calcination in the oven of the RTD. In the total solid, fixed total solid and humidity test it was determinated efficiency on the process of recuperation of RTD. Yet, in the stage of decantation it was studied the necessary time to separate the RTD of that solution. And in the calcination test it was studied the difference in the residence time period in oven and compared with CETEM process. The TDR obtained from the calcination process was analyzed its apparent density, specific surface, humidity, fire loss, pH, silicon, aluminium, iron, calcium, sodium, potassium, magnesium and it was compared with diatomaceous earth of the commercial current use. The TDR and TDP were classified in vibrant strainer and submitted to the technological filtration test in laboratory scale with beer type Pilsen before being filtered which has been produced in beverage laboratory of that Science Agronomic Faculty in Botucatu. The filtered was submitted to haste, color and counting of cells analyses and compared with testimony. In the accomplished test it was obtained the following results: DQO 121.667 mg L-1 e 62.500 mg L-1; total solid 28,37%; fixed total solid 22,17%; humidity 71,65%; decantation time 80 minutes; calcination difference time 0,5 hour, reducing the 4 electronics consumpition in 66,70%; silicon 98,70% in TDR; filtered it showed acceptability in the haste analyses, color and counting of cells. At the end of the research it was established that with the adoption of the SGA... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Diatomito, Cerveja, Poluição, Gestão ambiental, Kieselghur recycled, Beer, Environmental impact, Environmental management system
Como citar
PIMENTEL, Paulo Alexandre. Análise físico-química e energética do resíduo da terra diatomácea utilizada como auxiliar de filtração na indústria de cerveja. 2006. vii, 105 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2006.