Abstract

  Traditional pretreatment methods have several disadvantages, including lower efficiency in terms of cellulose purity, high cost and incomplete separation of biomass components. Considering this, we compared different pretreatment processes and studied their effect on separation of biomass components. Effective delignification was achieved by alkali pretreatment with sodium hydroxide and ammonia. Among alkalis, sodium hydroxide treatment requires less severe process condition like lower concentration, temperature and pressure compared to ammonia pretreatment and produces enzyme amenable substrate, which made sodium hydroxide ideal for biomass pretreatment. Efforts were mounted to optimize sodium hydroxide pretreatment on wheat straw in terms of reaction temperature, reaction time and reagent concentration to produce enzymatically amenable substrate. The best experimental results were obtained when biomass was treated with 2% sodium hydroxide at 130°C for 30 minutes, which was found to extract lignin and significant amount of hemicellulose from biomass.

Keywords: Biomass; Alkali Pretreatment; Precipitation; Separation

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Citation

Citation: Parmeshwar Patil., et al. “Separation of Lignocellulosic Biomass Components by Alkali Pretreatment". Acta Scientific Microbiology 3.3 (2020): 123-128.

Copyright

Copyright: © 2020 Parmeshwar Patil., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.