Consulta: creatorFacets:"Woiciechowski,Adenise Lorenci"
Registros recuperados: 7
Data/hora: 05/06/2024 04:42:36

Pretreatment strategies for delignification of sugarcane bagasse: a review
Provedor de dados: 52
Autores: Karp,Susan Grace; Woiciechowski,Adenise Lorenci; Soccol,Vanete Thomaz; Soccol,Carlos Ricardo.
The valorization of agro-residues by biological routes is a key technology that contributes to the development of sustainable processes and the generation of value-added products. Sugarcane bagasse is an agro-residue generated by the sugar and alcohol industry in Brazil (186 million tons per year), composed essentially of cellulose (32-44%), hemicellulose (27-32%) and lignin (19-24%). The conversion of sugarcane bagasse into fermentable sugars requires essentially two steps: pretreatment and hydrolysis. The aim of the pretreatment is to separate the lignin and break the structure of lignocellulose, and it is one of the most critical steps in the process of converting biomass to fermentable sugars. The aim of this review is to describe different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sugarcane Bagasse; Lignocellulose; Pretreatment; Delignification.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400019

Biofiltration of volatile organic compounds of Brazilian gasoline
Provedor de dados: 52
Autores: Rizzolo,Joana Antunez; Santos,Vanessa Cristina de Castro; Soares,Marlene; Woiciechowski,Adenise Lorenci; Soccol,Carlos Ricardo.
Gasoline vapors pollute the atmosphere and can be harmful to human and animal health. Tons of particles of this pollutant are expelled to the atmosphere, generating great economic losses to the industries and serious damage to the environment. Biofiltration is an option of simple technology with low costs that can be used for the gasoline vapor treatment. The present study was carried out in two biofilter systems of laboratorial scale. The biofilter system 1 was operated with a total volume of 2.72 L (four columns) and the biofilter 2 with 2.04 L (three columns) of total volume. Both of them were operated in sequence, with airflow of 450 mL entering each one. Results obtained were as follows for the removal efficiency (RE) of different gasoline vapor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofiltration; Volatile organic compounds; Gasoline; Atmospheric pollution.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000100017

Acid and enzymatic hydrolysis to recover reducing sugars from cassava bagasse: an economic study
Provedor de dados: 52
Autores: Woiciechowski,Adenise Lorenci; Nitsche,Saul; Pandey,Ashok; Soccol,Carlos Ricardo.
The objective of this work was to study the acid and enzymatic hydrolysis of cassava bagasse for the recovery of reducing sugars and to establish the operational costs. A statistical program "Statistica", based on the surface response was used to optimize the recovery of reducing sugars in both the processes. The process economics was determined considering the values of reducing sugars obtained at laboratory scale, and the operations costs of a cylindrical reactor of 1500 L, with flat walls at the top and bottom. The reactor was operated with 150 kg of cassava bagasse and 1350 kg of water. The yield of the acid hydrolysis was 62.4 g of reducing sugars from 100 g of cassava bagasse containing 66% starch. It represented 94.5% of reducing sugar recovery. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cassava bagasse; Hydrolysis; Acid; Enzyme; Reducing sugars; Economics.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300018

Thermoanalytical and starch content evaluation of cassava bagasse as agro-industrial residue
Provedor de dados: 52
Autores: Lacerda,Luiz Gustavo; Almeida,Rafael Ramires; Demiate,Ivo Mottin; Carvalho Filho,Marco Aurélio Silva; Vasconcelos,Eliane Carvalho; Woiciechowski,Adenise Lorenci; Bannach,Gilbert; Schnitzler,Egon; Soccol,Carlos Ricardo.
Starch nutritional fractions as well as thermal properties and other analysis are essential for food and industrial application. Cassava bagasse is an important agro-industrial residue and its starch content was evaluated using two alternative methods. Thermal characterization and microscopy analyses helped to understand how hydrolysis digests starchy fraction of cassava bagasse. The melting point of cassava starch occurred at 169.2ºC. Regarding TG analyses, after moisture content, there were observed two main mass losses for all samples. Results suggest hydrolysis carried out using enzyme is less effective in order to convert total starch content in cassava bagasse. However, using sulfuric acid, fibers are affected by analyses conditions.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amylase; Cassava; Hydrolysis; Thermal analysis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700019

Utilization of the biorreactor of imersion by bubbles at the micropropagation of Ananas comosus L. Merril
Provedor de dados: 52
Autores: Scheidt,Gessiel Newton; Arakaki,Andréa Haruko; Chimilovski,Jacqueline Sugitani; Portella,Augustus Caeser Franke; Spier,Michele Rigon; Woiciechowski,Adenise Lorenci; Biasi,Luiz Antonio; Soccol,Carlos Ricardo.
The research for new techniques of in vitro cultivation is being object of many studies around the world, in order to optimize and decrease production costs of seedlings with agronomical interest. The main goal of this work was to compare different systems of in vitro cultivations using Ananas comosus L. Merril. So, the in vitro growth of the plantlets was promoted in two different bioreactors: Bioreactor of Immersion by Bubbles (B.I.B.®) and the Reactor of Temporary Immersion (R.I.T.A.®) with immersion cycle every 2 hours for 15 minutes and the traditional system in flasks with 200 mL. All cultivation systems used the MS liquid nutritive solution, supplemented with BAP (1 mgL-1), ANA (0.25 mgL-1), sucrose (30 gL-1) and Tween 20® (0.5 µL). The pH was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioreactors; Ananas comosus; Micro propagation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700005

Evaluation of poultry litter traditional composting process
Provedor de dados: 52
Autores: Sanchuki,Carlos Eduardo; Soccol,Carlos Ricardo; Carvalho,Júlio Cesar de; Soccol,Vanete Thomaz; Nascimento,Camila do; Woiciechowski,Adenise Lorenci.
The objective of this work was to study the poultry litter composting and evaluate the physico-chemical and microbiological transformations as a time-function. At the end of composting, an increase of humification matter, a decrease of microbial diversity and the elimination of pathogens were observed. Results showed that poultry litter was liable of composting, without any nutritional complementation or inoculation and the process occurred similarly to other kind of organic residues.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry litter; Composting; Organic residues; Thermophilic phase.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000500024

A simplified model for A. Niger FS3 growth during phytase formation in solid State fermentation
Provedor de dados: 52
Autores: Spier,Michele Rigon; Letti,Luiz Alberto Junior; Woiciechowski,Adenise Lorenci; Soccol,Carlos Ricardo.
A simplified model to describe fungal growth during citric pulp fermentation for phytase production was described for the first time. Experimental data for biomass growth were adjusted to classical mathematical growth models (Monod and Logistic). The Monod model predictions showed good agreement with the experimental results for biomass concentration during 96 hours of fermentation. Parameters such as yield of biomass from oxygen (Y X/O), maintenance coefficient (m) and specific growth rate (µ) were compared showing a good correlation between the data and the model. An alternative method for biomass determination in this process was developed since a great correlation was found between biomass growth and enzyme formation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monod Model; Logistic model; Modelling; Fungal growth; Phytase formation; Citric pulp.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700020