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Population dynamics and spatial distribution of microbial species in multispecies biofilms under the action of direct electric current.
- Source :
- Chinese Science Bulletin; Dec2003, Vol. 48 Issue 24, p2688-2693, 6p
- Publication Year :
- 2003
-
Abstract
- Investigates the metabolism, population dynamics and spatial distribution of nitrifying bacteria and heterotrops in biofilms. Use of direct electric current and the micro-slicing technique; Inhibition of the nitrification rate by a current over 10 Am<superscript>-2</superscript> at lower C/N ratios; Significant decrease in bacterial density of nitrifying bacteria in surface biofilms; Finding that an increase in current density narrowed the inner biofilm region; Changes in the density of NQ<subscript>2</subscript>-oxidizers and NH<subscript>1</subscript>-oxidizers in the surface biofilms, suggesting dectrochemical reactions at the anode; Finding that the current's effect on population dynamics and spatial distribution was less significant at larger C/N ratios.
Details
- Language :
- English
- ISSN :
- 10016538
- Volume :
- 48
- Issue :
- 24
- Database :
- Complementary Index
- Journal :
- Chinese Science Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 12569591
- Full Text :
- https://doi.org/10.1360/03wb0122