Isolation and characterization of lignin-degrading bacterium Bacillus aryabhattai from pulp and paper mill wastewater and evaluation of its lignin-degrading potential.

ABSTRACT: This study reports the degradation and decolourization capability of a manganese peroxidase enzyme producing bacterium isolated from pulp and paper mill wastewater. The isolate was identified as Bacillus aryabhattai based on biochemical analysis and 16S rRNA gene sequencing. The strain was designated MG966493. This bacterium was able to reduce 67% and 54% colour and lignin, respectively, from the pulp and paper mill wastewater after 144 h of treatment at 32 °C, pH 7.6 and 120 rpm. Further, FT-IR analysis showed that during the lignin degradation process a number of metabolites were produced comprising different functional groups such as carbonyl (C=C), carboxyl (-COOH), alkene (C=C), amines (-NH₂), sulphonic (-SO₃) and nitro (-NO₂). In addition, the

SUBMITTER: Zainith S 

PROVIDER: S-EPMC6385068 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature