The drying of sewage sludge by immersion frying

Silva, D. P., Rudolph, V. and Taranto, O. P. (2005) The drying of sewage sludge by immersion frying. Brazilian Journal of Chemical Engineering, 22 2: 271-276.

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Author Silva, D. P.
Rudolph, V.
Taranto, O. P.
Title The drying of sewage sludge by immersion frying
Journal name Brazilian Journal of Chemical Engineering   Check publisher's open access policy
ISSN 0104-6632
Publication date 2005-01-01
Sub-type Article (original research)
Open Access Status File (Publisher version)
Volume 22
Issue 2
Start page 271
End page 276
Total pages 6
Editor Milton Mori
Place of publication Brazil
Publisher Brazilian Society Chemical Engineering
Language eng
Subject C1
290699 Chemical Engineering not elsewhere classified
770599 Other
Abstract The objective of this work was to dry sewage sludge using a fry-drying process. The frying experiments were carried out in commercial fryers modified by adding thermocouples to the setup. During frying, typical drying curves were obtained and it was verified that, in relation to the parameters: oil temperature, oil type and shape of the sample, the shape factor the most effect on the drying rate, at least within the range chosen for the variables studied. Oil uptake and calorific value were also analyzed. The calorific value of the samples increased with frying time, reaching values around 24MJ/kg after 600s of frying (comparable to biocombustibles such as wood and sugarcane bagasse). The process of immersion frying showed great potential for drying materials, especially sewage sludge, obtaining a product with a high energy content, thereby increasing its value as a combustible.
Keyword Engineering, Chemical
Sewage Sludge
Calorific Value
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 15:36:11 EST