1. Effective bioremediation of pulp and paper mill wastewater using Bacillus cereus as a possible kraft lignin-degrading bacterium
- Author
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Rajesh Kumar, Anjali Singh, Annapurna Maurya, Pooja Yadav, Ashutosh Yadav, Pankaj Chowdhary, and Abhay Raj
- Subjects
Paper ,Environmental Engineering ,Biodegradation, Environmental ,Bacillus cereus ,Renewable Energy, Sustainability and the Environment ,Industrial Waste ,Bioengineering ,Environmental Pollutants ,General Medicine ,Wastewater ,Waste Management and Disposal ,Lignin - Abstract
The effective degradation of KL from paper mill effluent is an important for environmental safety. This research is primarily concerned with the identification of KL-degrading Bacillus cereus from activated sludge and their possible use for the degradation of Kraft lignin (KL). This strain was involved in the production of lignin peroxidase-LiP (3.20 U/mL), manganese peroxidase-MnP (20.36 U/mL), and laccase (21.35 U/mL) enzymes, which were responsible for high KL degradation (89%) and decolorization (40%) at 1000 mg/L KL in 3 days. The SEM-EDS, UV-Vis, FTIR, and GC-MS analysis were used to analyze the bacterial cell and KL interactions to trace the KL degradation process. The significant reduction of pollutants (KL-72.5%, color-62.0%, COD-45.05%) and reduction in toxicity (80%) of bacterial-treated effluent indicated that B. cereus has the potential to be used in the degradation of pollutants from paper mill effluents.
- Published
- 2022