Optimization of sugar beet pulp pre-treatment with weak and strong acid under pressure and non-pressure conditions via RSM

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dc.contributor.authorGonen, Cagdas
dc.contributor.authorOnal, Nagehan Akter
dc.contributor.authorDeveci, Ece Ummu
dc.date.accessioned2024-11-07T13:24:46Z
dc.date.available2024-11-07T13:24:46Z
dc.date.issued2023
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractBiofuels, derived from sustainable biomass feedstock, are promising alternatives for fossil derivative fuels to mitigate climate change and air pollution. The molecular structure of lignocellulosic biomass, which creates the limitation of utilization by microorganisms, can be degraded to fermentable sugar via a pre-treatment process. In this study, citric acid as a weak acid and sulfuric acid as a strong acid were used for the pre-treatment of sugar beet pulp under pressure and non-pressure conditions. Fermentable sugar amount was determined for total sugar and reduced sugar formation. Acid ratio, solid ratio and reaction time variables were optimized for the highest fermentable sugar concentration via Box-Behnken statistical methods. Finally, pressure is significantly increasing the strong acid effect, where the total sugar can reach up to 33 g/L at 4% acid ratio, 27.5-min reaction time, and 5% solid ratio. A 27.5-min reaction time gives 11 g/L total sugar concentration under pressure conditions at 5% citric acid ratio. The highest reduced sugar concentration is 1170 mg/L for sulfuric acid under pressure with only 3% solid ratio. SEM-EDX and FT-IR analysis show reliable degradation of molecular structure. SEM analysis showed that under the same conditions at 100 degrees C and 1 atm, sulfuric acid produced a much more intense deformation than citric acid, with more fragmentation occurring on the surface parallel to the TS. In addition, protein analysis obtained using Aspergillus niger in microbial cultivation experiments supports that pre-treatment products may be suitable for biofuel production and microbial use. The highest protein value obtained by sulfuric acid pre-treatment is 120 mg/L. Pre-treatment is necessary for the development of microbial activity in the production of biofuels from agricultural wastes. The total protein content is an important parameter in determining total enzyme production in monitoring microbial growth.
dc.identifier.doi10.1007/s13399-021-02182-6
dc.identifier.endpage9226
dc.identifier.issn2190-6815
dc.identifier.issn2190-6823
dc.identifier.issue10
dc.identifier.scopus2-s2.0-85123069600
dc.identifier.scopusqualityQ3
dc.identifier.startpage9213
dc.identifier.urihttps://doi.org/10.1007/s13399-021-02182-6
dc.identifier.urihttps://hdl.handle.net/11480/14305
dc.identifier.volume13
dc.identifier.wosWOS:000742297000003
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Heidelberg
dc.relation.ispartofBiomass Conversion and Biorefinery
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectSugar beet pulp
dc.subjectPre-treatment
dc.subjectSulfuric acid
dc.subjectCitric acid
dc.subjectBox-Behnken
dc.subjectBiofuel feedstock
dc.subjectMicrobial activity
dc.titleOptimization of sugar beet pulp pre-treatment with weak and strong acid under pressure and non-pressure conditions via RSM
dc.typeArticle

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