Abstract
High carbohydrate content of seaweeds (SWs) biomass makes them a potential feedstock for bioethanol production. Improvement of the conversion efficiency from polysaccharide to fermentable sugar during the pretreatment process is helpful to enhance the bioethanol yield. In this study, the response surface methodology (RSM) was used to optimize the thermal-acid pretreatment of SWs (S. thunbergii GEEL-15 and Ulva sp. GEEL-17). Biomass loading, acid concentration, and pretreatment time were studied as independent variables and total reducing sugar (TRS) content was selected as response value. The results showed that the correlation between independent variables with TRS content was significant (p<0.001). The optimal biomass loading for GEEL-15 and GEEL-17 was 9.0% w/v and 5.5% w/v at 85 and 82 min, respectively, at an acid concentration of 1.2% v/v. The TRS content increased upto nearly 150.621 and 262.543 mg/g biomass for GEEL-15 and GEEL-17, respectively.
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The authors are thankful to Deanship of Scientific Research and under the supervision of the Scientific and Engineering Research Center at Najran University for funding this work under the Research centers Funding program grant code (NU/RCP/SERC/12/11).
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Yulu Yang: Methodology, Investigation, Visualization, Formal analysis, Writing-original draft preparation, Writing-review and editing, Revision. Mohammed Jalalah: Data curation, Funding support, Writing-review, and editing. Saeed A. Alsareii: Methodology, Investigation, Formal analysis. Farid A. Harraz: Methodology, Formal analysis. Abdulrhman A. Almadiy: Methodology, Formal analysis. Nandini Thakur: Methodology, Formal analysis, Writing-original draft preparation. El-Sayed Salama: Supervision, Resources, Data curation, Validation, Visualization, Formal analysis, Writing-review and editing, Funding acquisition, Project administration, Revision.
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Yang, Y., Jalalah, M., Alsareii, S.A. et al. Enhancement of total reducing sugar content from seaweeds (SWs) biomass via pretreatment for ethanol production: an optimized study. Biomass Conv. Bioref. (2023). https://doi.org/10.1007/s13399-023-05186-6
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DOI: https://doi.org/10.1007/s13399-023-05186-6