NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Biotechnology (IJBT) >
IJBT Vol.05 [2006] >
IJBT Vol.05(1) [January 2006] >

Title: Optimization of microbial degradation of an azo dye (methyl red) in fixed film bioreactors
Authors: Kumar, Suresh
Sharma, K P
Sharma, Shweta
Grover, Ruby
Kumar, Pawan
Soni, Pratima
Sharma, Subhasini
Keywords: bioreactor
solid matrix-texture
aerated and non-aerated conditions
inorganic and organic nutrients
methyl red
Bacillus sp.
Issue Date: Jan-2006
Publisher: CSIR
IPC CodeInt. Cl.7 C02F3/34; C02F103:30; C12R1: 645, 1:07, 1:67, 1:68, 1:685, 1:885
Abstract: The effects of inorganic (5 ppm PO4-P and 50 ppm NO3-N) and organic (30 mL/day milk whey) nutrients were examined on the microbial degradation of 100 ppm methyl red (MR) at one day retention period under aerobic and anaerobic conditions in two types of fixed film bioreactors; one prepared by using only gravel while the other, by using a mixture (3:1) of gravel and coarse river sand. The performance of the bioreactor outflows was judged (with reference to the four types of inflows used) on the basis of their per cent decolourisation, reduction in COD load and toxicity to Lemna, which was found to be more sensitive than Hydrilla. The order of their performance was as follows: MR (100 ppm) +PO4-P (5 ppm) >/ MR (100 ppm) + PO4-P+NO3-N+ Milk whey > MR (100 ppm) + PO4-P+NO3-N (50 ppm) >/MR (100 ppm). In MR +PO4-P treatment, the outflows from aerated bioreactors were found non-toxic to Lemna and percentage reduction in COD load (63-70%) and decolourisation (90-94%) were also maximum. They, however, were found toxic in other treatments. Among the bioreactors, gravel bed exhibited excellent performance.
Page(s): 68-75
ISSN: 0975-0967 (Online); 0972-5849 (Print)
Source:IJBT Vol.05(1) [January 2006]

Files in This Item:

File Description SizeFormat
IJBT 5(1) 68-75.pdf128.83 kBAdobe PDFView/Open
 Current Page Visits: 930 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 171581 since 01-Sep-2015  Last updated on 30-Jun-2016Webmaster: