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Removal of methanol from air in a low-pH trickling monolith bioreactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
35417 45089 2008 7 PDF Available
Title
Removal of methanol from air in a low-pH trickling monolith bioreactor
Abstract

A novel ceramic monolith bioreactor colonized by a methanol-degrading culture was investigated in order to assess its suitability for waste gas treatment. The acidotolerant yeast Candida boidinii was identified as dominant organism in the biofilm. The culture was able to efficiently biodegrade methanol at a pH as low as 2, both in batch and in continuous bioreactor studies. Operational parameters that were considered include start-up of the bioreactor, methanol loading, mineralization of methanol, pressure drop and biofilm accumulation during steady-state operation. A high maximal elimination capacity of 234 g m−3 h−1 was reached, with more than 80% removal efficiency and complete conversion of methanol into biomass and end products. Removal efficiencies exceeding 90% were obtained up to loads of about 200 g m−3 h−1. Problems of excess biomass accumulation and pressure drop after long-term operation can easily be solved by temporarily increasing the liquid trickling rate. This is the first report on the treatment of methanol-polluted air in such a low-pH monolith bioreactor.

Keywords
Monolith; Acidotolerant microorganism; Mass transfer; Pressure drop; Volatile organic compound; Waste gas
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Removal of methanol from air in a low-pH trickling monolith bioreactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 43, Issue 9, September 2008, Pages 925–931
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