The New Jersey Institute of Technology's
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Title:	Microbial phenol degradation utilizing a complete-mix biological reactor : the effects of dissolved oxygen content
Author:	Kollar, Keith
View Online:	njit-etd1988-040 (121 pages ~ 2.9 MB pdf)
Department:	Department of Chemical Engineering, Chemistry and Environmental Science
Degree:	Master of Science
Program:	Environmental Science
Document Type:	Thesis
Advisory Committee:	Lewandowski, Gordon (Committee chair) Armenante, Piero M. (Committee member) Baltzis, Basil (Committee member)
Date:	1988-05
Keywords:	Phenols -- Biodegradation Sewage -- Purification -- Biological treatment
Availability:	Unrestricted
Abstract:	Experiments were conducted using phenol as a sole carbon source in a series of completely mixed biological reactors with solids recycle (CMBR). The reactor working volume was 4 liters, and solids were recycled from 3 liter clarifiers. Dissolved oxygen concentration (DO) was varied in order to determine the impact of this important variable on system operability. Phenol was removed at better than 99 percent efficiency during most of the runs. Filamentous growth was not observed during any run. However, bulking did occur at higher DO levels, which was the result of microbial slime production.