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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.11 [2004] >
IJCT Vol.11(1) [January 2004] >
| Title: | Preparation of biocatalyst for the removal of dissolved organics in wastewater |
| Authors: | Sekaran, G
Gnanamani, A
Yogesh, P |
| Issue Date: | Jan-2004 |
| Publisher: | CSIR |
| IPC Code: | (C02F3/34, 101:30), C02F103:34 |
| Abstract: | Xenobiotic compounds
are used in considerable quantities in leather industries besides organic and
inorganic compounds. These compounds resist biological degradation and thus
they remain present in the treated wastewater in the unaltered molecular
configurations. Immobilization of organisms in carrier matrices protects them
from shock load applications and from the toxicity of chemicals in bulk liquid
phase. Rice Bran based Activated Carbon (RBAC) has been considered in the
present study as the carrier matrix for the immobilization of Bacillus sp. isolated from Effluent
Treatment Plant (ETP) employed for the treatment of wastewater containing
sulphonated phenolic (SP) compounds. The influence of temperature, pH,
concentration, particle size, mass of the adsorbent were observed on the
immobilization behaviour of Bacillus sp.
in RBAC. The percentage immobilization of Bacillus
sp. was maximum at pH 7.0, temperature 20°C and for particle size 300  . Enthalpy, free energy and entropy of adsorption were –46.9 kj mole-1, -1.187 kj mole-1 and –161.36 J °K-1mole-1 respectively at pH 7.0, temperature
30°C and particle size 600 . Higher
values of  H° indicate the firm bonding of the Bacillus sp. in RBAC. |
| Page(s): | 95-102 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.11(1) [January 2004]
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