Strategic lignin removal from lignocellulosic matrix of wheat straw using selectivity characteristics of ozone
Keywords:Ozone, lignin, lignocellulose, ozonolysis, Selectivity, wheat straw
Current study was planned to investigate the ozone selectivity for lignin in wheat straw delignification process under controlled conditions. Operating variables such as ozone concentration, reaction time of ozone with wheat straw and flow rate of ozone were explored and the focus was to prevent depolymerization of cellulose in the lignocellulosic matrix.
The novelty in the technique is the strategic use of operating parameters to get maximum lignin removal and least cellulose damage in wheat straw matrix. The removal of lignin was maximum till the first 60 minutes for the ozone flowrates of 4 L min-1, 2 L min-1 and 1 L min-1 of reaction. Further increase in reaction time above 60 min made the process less selective.Results support the idea that the lignin can both sustain and restrict the disintegration of carbohydrates. The flow rate of 2L min-1 with a contact time of 60 min is recommended for optimum removal of 85% of lignin.
How to Cite
Baig, K. S., Quraishi, K. S., Farrukh, A., & Mehmood, N. (2022). Strategic lignin removal from lignocellulosic matrix of wheat straw using selectivity characteristics of ozone. Journal of the Pakistan Institute of Chemical Engineers, 50(1). https://doi.org/10.54693/piche.05011
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