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VOL. 8, ISSUE 3 (2023)
Degradation of kraft lignin and simultaneous decolorization of pulp and paper mill wastewater by bacillus spp
Authors
Sandeep Kumar Shukla, Monika Verma, Amia Ekka
Abstract
The characteristics of effluent revealed that
it was dark brown in color with 1692 PtCo CU having high chemical oxygen demand
values, biological oxygen demand, slightly alkaline pH and contained high load
of inorganic and organic constituents, well above the prescribed standards. This
study gives out the degradation and decolorization of black liquor by potential
bacterium isolated from timber soil sample. The isolate was identified as Bacillus
velezensis based on 16s rRNA gene sequencing and biochemical analysis. This
bacterium was able to reduce color (28.83%), liginin (27.15%), BOD (96.21%),
COD (80.71%) and total phenol (15.55%) from pulp and paper mill wastewater
after 168h of treatment at 40 oC, pH 7.6. During the course of
degradation significant change in functional group composition was found
through FTIR analysis. The degradation and decolorization analysis indicated
potential application of the isolate Bacillus velezensis in treatment of
lignin containing pollutants and Kraft lignin (KL) valorization.
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Pages:63-68
How to cite this article:
Sandeep Kumar Shukla, Monika Verma, Amia Ekka "Degradation of kraft lignin and simultaneous decolorization of pulp and paper mill wastewater by bacillus spp". International Journal of Advanced Research and Development, Vol 8, Issue 3, 2023, Pages 63-68
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