An Approach to Correlate Chemical Pretreatment to Digestibility Through Biomass Characterization by SEM, FTIR and XRD
A comprehensive study was carried out to assess the efficiency of different chemicals on the pretreatment of plant biomass, corn cobs. The efficiency was assessed based on its effect on subsequent hydrolysis of biomass for the conversion to fermentable sugars. Both alkali- and acid-based pretreatmen...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2022.802522/full |
| _version_ | 1811339268282384384 |
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| author | Bindu Sunkar Bhima Bhukya |
| author_facet | Bindu Sunkar Bhima Bhukya |
| author_sort | Bindu Sunkar |
| collection | DOAJ |
| description | A comprehensive study was carried out to assess the efficiency of different chemicals on the pretreatment of plant biomass, corn cobs. The efficiency was assessed based on its effect on subsequent hydrolysis of biomass for the conversion to fermentable sugars. Both alkali- and acid-based pretreatments were carried out under optimized conditions to avoid the formation of inhibitors and also to yield more sugars. Among the different chemicals used, 2% NaOH (w/v) was found to be effective with the delignification efficiency of 84.32%, and furthermore, the biomass saccharification efficiency was found to be 86.28% using 1.20% (v/v) HNO3 at 100°C for 90 min, whereas the pretreatment with other chemicals such as KOH, NaClO2, Na2SO3, and NH3 had significantly (p < 0.05) low delignification, which ultimately reduced the saccharification efficiency. In acid–base-based pretreatment, 1.5% (v/v) HNO3 resulted in 63.42% delignification along with 68% digestion of hemicelluloses. The effect of pretreatment efficiency on digestibility was investigated by biomass characterization using SEM, FTIR, and XRD analyses before and after the treatment process. The imaging studies clearly indicated that 2% NaOH efficiently digested the complex matrix alignment and enhanced the surface area of the carbohydrate polymer which had shown a positive impact on the rate of hydrolysis. The study concludes that alkali-based pretreatment is the efficient and cost-viable technique for the effective valorization of corn cobs for the production of fermentable sugars which can be further converted to various valuable bioproducts. |
| first_indexed | 2024-04-13T18:23:46Z |
| format | Article |
| id | doaj.art-bdcb4b46962f4024813167874525803e |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-04-13T18:23:46Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-bdcb4b46962f4024813167874525803e2022-12-22T02:35:19ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2022-05-011010.3389/fenrg.2022.802522802522An Approach to Correlate Chemical Pretreatment to Digestibility Through Biomass Characterization by SEM, FTIR and XRDBindu SunkarBhima BhukyaA comprehensive study was carried out to assess the efficiency of different chemicals on the pretreatment of plant biomass, corn cobs. The efficiency was assessed based on its effect on subsequent hydrolysis of biomass for the conversion to fermentable sugars. Both alkali- and acid-based pretreatments were carried out under optimized conditions to avoid the formation of inhibitors and also to yield more sugars. Among the different chemicals used, 2% NaOH (w/v) was found to be effective with the delignification efficiency of 84.32%, and furthermore, the biomass saccharification efficiency was found to be 86.28% using 1.20% (v/v) HNO3 at 100°C for 90 min, whereas the pretreatment with other chemicals such as KOH, NaClO2, Na2SO3, and NH3 had significantly (p < 0.05) low delignification, which ultimately reduced the saccharification efficiency. In acid–base-based pretreatment, 1.5% (v/v) HNO3 resulted in 63.42% delignification along with 68% digestion of hemicelluloses. The effect of pretreatment efficiency on digestibility was investigated by biomass characterization using SEM, FTIR, and XRD analyses before and after the treatment process. The imaging studies clearly indicated that 2% NaOH efficiently digested the complex matrix alignment and enhanced the surface area of the carbohydrate polymer which had shown a positive impact on the rate of hydrolysis. The study concludes that alkali-based pretreatment is the efficient and cost-viable technique for the effective valorization of corn cobs for the production of fermentable sugars which can be further converted to various valuable bioproducts.https://www.frontiersin.org/articles/10.3389/fenrg.2022.802522/fullcorn cobspretreatmenthydrolysisSEMFTIRXRD |
| spellingShingle | Bindu Sunkar Bhima Bhukya An Approach to Correlate Chemical Pretreatment to Digestibility Through Biomass Characterization by SEM, FTIR and XRD Frontiers in Energy Research corn cobs pretreatment hydrolysis SEM FTIR XRD |
| title | An Approach to Correlate Chemical Pretreatment to Digestibility Through Biomass Characterization by SEM, FTIR and XRD |
| title_full | An Approach to Correlate Chemical Pretreatment to Digestibility Through Biomass Characterization by SEM, FTIR and XRD |
| title_fullStr | An Approach to Correlate Chemical Pretreatment to Digestibility Through Biomass Characterization by SEM, FTIR and XRD |
| title_full_unstemmed | An Approach to Correlate Chemical Pretreatment to Digestibility Through Biomass Characterization by SEM, FTIR and XRD |
| title_short | An Approach to Correlate Chemical Pretreatment to Digestibility Through Biomass Characterization by SEM, FTIR and XRD |
| title_sort | approach to correlate chemical pretreatment to digestibility through biomass characterization by sem ftir and xrd |
| topic | corn cobs pretreatment hydrolysis SEM FTIR XRD |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2022.802522/full |
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