Record Details

Efficacy of free and encapsulated Bacillus lichenformis strain SL10 on degradation of phenol: A comparative study of degradation kinetics.

IR@CSIR-CFTRI

View Archive Info
 
 
Field Value
 
Relation http://ir.cftri.com/13398/
http://dx.doi.org/10.1016/j.jenvman.2017.04.005
 
Title Efficacy of free and encapsulated Bacillus lichenformis strain SL10 on
degradation of phenol: A comparative study of degradation kinetics.
 
Creator Chris Felishia, S.
Aswin Karthick, N.
Thilagam, R.
Chandralekha, A.
Raghavarao, K. S. M. S.
 
Subject 03 Environmental Sciences
02 Bacteriology
 
Description The present study exemplifies phenol degradation efficacy of the free and encapsulated bacterial isolate,
explored the degradation kinetics and storage stability in detail. In brief, isolation, identification and
phenol degradation potential of the bacterial made from wastewater treated sludge samples. The organism
identified as B. licheniformis demonstrates phenol degradation at a concentration more than
1500 ppm. Optimization of environmental parameters reduces the time taken for degradation considerably.
The organism has further been encapsulated using whey protein and the efficacy of encapsulated
species suggested that encapsulation protects the cells from high concentration of phenol and at the
same time expedite the degradation of the chosen pollutant at appreciable level. The encapsulated
species effectively degrade 3000 ppm concentration of phenol within 96 h of incubation. Both pH and
temperature stability observed in the encapsulated species suggests the effectiveness of the encapsulation.
The encapsulated cells displayed storage stability for a four week period at 4 C and reusability up
to three exposures. Degradation effected through intracellular catechol 2,3 dioxygenase. In conclusion,
encapsulation of B. licheniformis (i) protects the cells from direct exposure to toxic pollutants; (ii) facilitates
the field scale application and (iii) eliminate the practical difficulties in handling wet biomass in
field application and assures the best possible way of remediating the phenol contaminated soil.
 
Date 2017
 
Type Article
PeerReviewed
 
Format pdf
 
Language en
 
Identifier http://ir.cftri.com/13398/1/Journal%20of%20Environmental%20Management%20197%20%282017%29%20373e383.pdf
Chris Felishia, S. and Aswin Karthick, N. and Thilagam, R. and Chandralekha, A. and Raghavarao, K. S. M. S. (2017) Efficacy of free and encapsulated Bacillus lichenformis strain SL10 on degradation of phenol: A comparative study of degradation kinetics. Journal of Environmental Management, 197. pp. 373-383.