Document Detail


Treatment of catechol bearing wastewater in an upflow anaerobic sludge blanket (UASB) reactor: sludge characteristics.
MedLine Citation:
PMID:  18524576     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This paper deals with the characteristics of anaerobic microbial granules grown in an UASB reactor treating catechol bearing synthetic wastewater (SWW). The specific methanogenic activity of the sludge showed an increase in trend with an increase in the organic loading rate and the catechol concentration in the SWW. The settling velocity of individual granules in the size range of 0.5-2.5mm was found to be in the range of 30-75mh(-1). The ash content in the sludge was 11.7% with a sludge volume index of 18-20mlg(-1). The inorganic elemental distribution within the granules showed a decrease except that for phosphorous and cobalt, which increased by approximately 12% and 18%, respectively, after the treatment of SWW. Scanning electron microscopy (SEM) coupled with electron disperse X-ray analysis showed an increase in the sulphur content by approximately 300% after the treatment of SWW. Surface mineral composition of the granules determined by XRD analysis indicated the existence of vuagnatite (CaAlSiO(4)(OH)). SEM observation of the granules showed the predominance of Methanosaeta and Methanobacterium type of species on the surface along with a variety of other species.
Authors:
Revanuru Subramanyam; I M Mishra
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Publication Detail:
Type:  Journal Article     Date:  2008-06-03
Journal Detail:
Title:  Bioresource technology     Volume:  99     ISSN:  0960-8524     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-09-04     Completed Date:  2008-12-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  8917-25     Citation Subset:  IM    
Affiliation:
Department of Chemical Engineering, Indian Institute of Technology, Roorkee 247 667, Uttarakhand, India.
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MeSH Terms
Descriptor/Qualifier:
Anaerobiosis
Bioreactors*
Catechols / isolation & purification*
Elements
Glucose
Methane
Sewage*
Spectroscopy, Fourier Transform Infrared
Spectrum Analysis
Waste Disposal, Fluid / instrumentation*
Water Purification / instrumentation*
X-Ray Diffraction
Chemical
Reg. No./Substance:
0/Catechols; 0/Elements; 0/Sewage; 120-80-9/catechol; 50-99-7/Glucose; 74-82-8/Methane

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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