Microbial growth and degradation kinetics of perchlorate by Proteus sp. LMNCRE in a batch reactor system Online publication date: Wed, 29-Jun-2016
by J.R. Anoop Raj; L. Muruganandam
International Journal of Environment and Sustainable Development (IJESD), Vol. 15, No. 3, 2016
Abstract: The present work is a laboratory-scale study of perchlorate (ClO−4) degradation using Proteus sp. LMNCRE in a batch reactor. The average hourly value of perchlorate degradation rate in this system was 1.95 mg/L at optimum pH 7.5 and 0.25% NaCl salinity. The microbial growth and degradation kinetics have been studied to a variety of ClO−4 levels (0 to 100 mg/L) under anoxic conditions. The biomass optical-density value of strain gradually increased from 0-0.37 during the operating period of 30h. The perchlorate level in which the bacterium could withstand for effective removal was found to be 75 ± 2.0 mg/L with zero order reaction coefficient (k) of 2.08 mg/L/h. The observed anoxic degradation rate of strain was 87.0 ± 0.6 % within 12 h of incubation period at 25 mg/L of initial perchlorate level. From the experimental findings, the uptake of perchlorate by the bacterium is suggested to obey a zero-order substrate-utilising kinetic model, allowed the growth rates constants to be determined.
Online publication date: Wed, 29-Jun-2016
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environment and Sustainable Development (IJESD):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email firstname.lastname@example.org