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Trametes versicolor pellets production: Low-cost medium and scale-up

Paper ID Volume ID Publish Year Pages File Format Full-Text
4019 204 2008 6 PDF Available
Title
Trametes versicolor pellets production: Low-cost medium and scale-up
Abstract

A cost analysis of a decolourization process using the ligninolytic fungus Trametes versicolor in pellet form was carried out. It established that the key to making the process cost-efficient was to reduce the cost of the culture medium for pellet production, which accounts for over 95% of the total cost of the process, due to the high price of malt extract. A cheaper defined medium was formulated in order to obtain spherical pellets approximately 3 mm in diameter. The pH of the medium played an important role in pellet production. Experiments were therefore conducted to allow the control of the pH. A stirred-tank bioreactor (1 L) was ruled out, since problems related to oxygen transfer and types of agitation have been shown to exert a great influence on pellet formation. Use of air-pulsed bioreactors solved these problems, allowing both pellet production and scale-up of the process in a 10 L air-pulsed bioreactor. The new pellet production process reduced the total cost by up to 94.4% per unit volume of wastewater treated. In a decolourization test the pellets obtained from the new process showed an outstanding performance.

Keywords
Bioreactor; Scale-up; White-rot; Filamentous fungi; Wastewater treatment; Economic study
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 42, Issue 1, 15 October 2008, Pages 61–66
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us