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Influence of microwave radiation on bacterial community structure in biofilm

Paper ID Volume ID Publish Year Pages File Format Full-Text
35823 45108 2007 4 PDF Available
Title
Influence of microwave radiation on bacterial community structure in biofilm
Abstract

Organic matter exposed to microwave radiation triggers standard thermal effects as well as a range of so called non-thermal effects. The present work examined the non-thermal effects of microwave radiation on the biofilm in bioreactors with immobilised biomass. Microwave-exposed and conventionally heated reactors were used and both groups of reactors operated on analogous technological parameters. The analysis of the treated sewage demonstrated a significant increase in nitrification and denitrification efficiency in the bioreactors treated with microwave radiation. An analysis of bacteria diversity based on DGGE method showed significantly different bacterial communities developed in the reactors exposed to the microwave radiation in comparison to the control reactors. Moreover, bacterial richness measured by Shannon index was significantly higher in the microwave treated samples (Mann–Whitney's test, p < 0.05). These findings indicate that microwave radiation can affect the structure and function of bacterial communities independent of thermal effects.

Keywords
PCR-DGGE; Richness index; Bacterial communities; Nitrogen compounds removal; Organic compounds removal
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Influence of microwave radiation on bacterial community structure in biofilm
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 42, Issue 8, August 2007, Pages 1250–1253
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