Strategic lignin removal from lignocellulosic matrix of wheat straw using selectivity characteristics of ozone

Authors

  • Khurram Shahzad Baig Department of Chemical Engineering, Wah Engineering College, University of Wah, Quaid Avenue, 47040, Wah Cantt, Pakistan
  • Khurram Shehzad Quraishi Department of Chemical Engineering, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Nilore, Islamabad, Pakistan.
  • Aasia Farrukh Department of Chemical Engineering, Wah Engineering College, University of Wah, Quaid Avenue, 47040, Wah Cantt, Pakistan
  • Nazar Mehmood Department of Chemical Engineering, Wah Engineering College, University of Wah, Quaid Avenue, 47040, Wah Cantt, Pakistan

DOI:

https://doi.org/10.54693/piche.05011

Keywords:

Ozone, lignin, lignocellulose, ozonolysis, Selectivity, wheat straw

Abstract

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.

Downloads

Published

2022-03-31

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

Issue

Vol. 50 No. 1 (2022): Journal of the Pakistan Institute of Chemical Engineers

Section

Articles

License

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).