fulltext.study @t Gmail

Performance evaluation of various bioreactors for the removal of Cr(VI) and organic matter from industrial effluent

Paper ID Volume ID Publish Year Pages File Format Full-Text
4266 218 2009 13 PDF Available
Title
Performance evaluation of various bioreactors for the removal of Cr(VI) and organic matter from industrial effluent
Abstract

Performances of various bioreactors under different operating conditions were evaluated with respect to hexavalent chromium (Cr(VI)) reduction and COD removal. Continuous reactor studies were carried out with (i) aerobic suspended growth system, (ii) aerobic attached growth system, and (iii) anoxic attached growth system, using both synthetic and actual industrial wastewater. Arthrobacter rhombi-RE (MTCC7048), a Cr(VI) reducing strain enriched and isolated from chromium contaminated soil, was used in all the bioreactors for Cr(VI) biotransformation and COD removal. Aerobic and anoxic batch experiments were conducted to evaluate the bio-kinetic parameters. The bio-kinetic parameters for aerobic system were: μmax = 2.34/d, Ks = 190 mg/L (as COD), Ki = 3.8 mg/L of Cr(VI), and YT = 0.377. These parameters for anoxic conditions were: μmax = 0.57/d, Ks = 710 mg/L (as COD), Ki = 8.77 mg/L of Cr(VI), and YT = 0.13. Aerobic attached growth system, operated at a hydraulic retention time (HRT) of 24 h and an organic loading rate (OLR) of 3 kg/m3/d, performed better than aerobic suspended and the anoxic attached growth systems operated under identical conditions, while treating synthetic wastewater as well as industrial effluent.

Keywords
Arthrobacter rhombi-RE; Cr(VI) reduction; COD removal; Kinetic parameter; Bioreactor
First Page Preview
Performance evaluation of various bioreactors for the removal of Cr(VI) and organic matter from industrial effluent
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 44, Issues 2–3, 15 May 2009, Pages 174–186
Authors
, ,
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