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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Bioenergy and Biofuels
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1444813
This article is part of the Research Topic Advances in Biofuel Production from Utilization of Biomass Resources for Sustainable Bioenergy View all 3 articles

Alkaline hydrogen peroxide pretreatment of bamboo residues and its influence on physiochemical properties and enzymatic digestibility for bioethanol production

Provisionally accepted
Sabeela B. Ummalyma Sabeela B. Ummalyma 1*Ningthoujam Herojit Ningthoujam Herojit 2Rajeev K. Sukumaran Rajeev K. Sukumaran 3
  • 1 Rajagiri College of Social Sciences, Kochi, Kerala, India
  • 2 Microbial Resources Division, Institute of Bioresources and Sustainable Development (IBSD), Imphal, Manipur, India
  • 3 National Institute for Interdisciplinary Science and Technology (CSIR), Thiruvananthapuram, Kerala, India

The final, formatted version of the article will be published soon.

    Bamboo is a perennial rapid-growing plant that is given preference for renewable biosources for biofuels and bio-based chemical conversion. Bamboos are rich in cellulose and have highly recalcitrant biomass due to high lignin. Bamboo is abundantly available in Northeastern India and can be utilized as a feedstock biofuels. Here, we evaluated the pretreatment of bamboo residues Dendrocalamus strictus with different concentrations of alkali, hydrogen peroxide, and alkaline hydrogen peroxide and its influence on biomass digestibility for enhancement of sugar recovery with Celic C cellulase enzyme blend. Enzymatic hydrolysis data indicated untreated raw biomass showed a digestibility of 40% after 48 hours of incubation. The biomass pretreated with alkali showed a maximum digestibility of 61% obtained from 10% loaded with 0.5% w/v NaOH. Pretreatment of the bamboo with H2O2 shows a maximum digestibility of 75% from biomass loaded with 1% w/v of H2O2. Combinational pretreatment of alkaline hydrogen peroxide showed a maximum efficiency of biomass digestibility of 83% attained from biomass loaded with 1% w/v NaOH-H2O2. Crystallinity index (CrI) analysis showed that CrI increased from 64 to 70.75% in pretreated biomass. FTIR and SEM analysis show changes in functional groups, morphology, and surface of biomass in pretreated biomass. Compositional analysis shows that 68% of lignin removal is obtained from alkaline hydrogen peroxide pretreatment. Cellulose content increased from 52 to 65%, and hemicellulose decreased from 18.6 to 8.6%. Results indicated that the potential possibility of bamboo waste biomass as feedstock for biorefinery products and alkaline hydrogen peroxide pretreatment methods is an efficient strategy for sugar recovery for bioethanol production.

    Keywords: Bamboo residues, Alkaline hydrogen peroxide, Biomass digestibility, pretreatment, Biofuels

    Received: 06 Jun 2024; Accepted: 15 Aug 2024.

    Copyright: © 2024 Ummalyma, Herojit and Sukumaran. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Sabeela B. Ummalyma, Rajagiri College of Social Sciences, Kochi, Kerala, India

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.