Rice straw structure changes following green pretreatment with petha wastewater for economically viable bioethanol production
Abstract Energy efficient and environment friendly pretreatment processes for the production of biofuel have remained elusive and the research is further compounded by the high cost of processing lignocellulosic biomass—an essential factor for producing sustainable biofuels. In the last few decades,...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-14627-7 |
| _version_ | 1811227286211395584 |
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| author | Dolly Kumari Radhika Singh |
| author_facet | Dolly Kumari Radhika Singh |
| author_sort | Dolly Kumari |
| collection | DOAJ |
| description | Abstract Energy efficient and environment friendly pretreatment processes for the production of biofuel have remained elusive and the research is further compounded by the high cost of processing lignocellulosic biomass—an essential factor for producing sustainable biofuels. In the last few decades, a number of pretreatment methods have been proposed, specifically chemical pretreatments but are either expensive or harmful to the environment. To address this urgent need, we propose a green pretreatment method that utilises the highly alkaline by-product, petha wastewater to pretreat the lignocellulosic waste rice straw (RS). The effectiveness of the pretreatment was analysed by monitoring both enhanced cellulose content and reducing sugar yield along with removal of hemicellulose and lignin. We found that PWW pretreatment yielded five times more reducing sugar than native RS with 10.12% increment in cellulose content. SEM and EDX studies further revealed that our process enhanced surface roughness and carbon content (from 32.19% increased to 41.59% and 41.66% for A and D, respectively) along with reduction in silica content (from 8.68% in RS to 4.30% and 7.72% for A and D, respectively). XRD and FTIR analyses indicate crystallinity index (CI) and alteration in lignocellulosic structure of RS, respectively. Decrease in CI was about 43.4% in A whereas only 4.5% in D as compared to native RS (CI 54.55%). Thereby we found PWW to be better substitute of an alkali for pretreatment of RS with negligible environmental impacts. |
| first_indexed | 2024-04-12T09:38:57Z |
| format | Article |
| id | doaj.art-826ed4ecb459493e80f8fe52752524c5 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-12T09:38:57Z |
| publishDate | 2022-06-01 |
| publisher | Nature Portfolio |
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| spelling | doaj.art-826ed4ecb459493e80f8fe52752524c52022-12-22T03:38:08ZengNature PortfolioScientific Reports2045-23222022-06-0112111010.1038/s41598-022-14627-7Rice straw structure changes following green pretreatment with petha wastewater for economically viable bioethanol productionDolly Kumari0Radhika Singh1Biohydrogen Production Lab, Department of Chemistry, Faculty of Science, Dayalbagh Educational InstituteBiohydrogen Production Lab, Department of Chemistry, Faculty of Science, Dayalbagh Educational InstituteAbstract Energy efficient and environment friendly pretreatment processes for the production of biofuel have remained elusive and the research is further compounded by the high cost of processing lignocellulosic biomass—an essential factor for producing sustainable biofuels. In the last few decades, a number of pretreatment methods have been proposed, specifically chemical pretreatments but are either expensive or harmful to the environment. To address this urgent need, we propose a green pretreatment method that utilises the highly alkaline by-product, petha wastewater to pretreat the lignocellulosic waste rice straw (RS). The effectiveness of the pretreatment was analysed by monitoring both enhanced cellulose content and reducing sugar yield along with removal of hemicellulose and lignin. We found that PWW pretreatment yielded five times more reducing sugar than native RS with 10.12% increment in cellulose content. SEM and EDX studies further revealed that our process enhanced surface roughness and carbon content (from 32.19% increased to 41.59% and 41.66% for A and D, respectively) along with reduction in silica content (from 8.68% in RS to 4.30% and 7.72% for A and D, respectively). XRD and FTIR analyses indicate crystallinity index (CI) and alteration in lignocellulosic structure of RS, respectively. Decrease in CI was about 43.4% in A whereas only 4.5% in D as compared to native RS (CI 54.55%). Thereby we found PWW to be better substitute of an alkali for pretreatment of RS with negligible environmental impacts.https://doi.org/10.1038/s41598-022-14627-7 |
| spellingShingle | Dolly Kumari Radhika Singh Rice straw structure changes following green pretreatment with petha wastewater for economically viable bioethanol production Scientific Reports |
| title | Rice straw structure changes following green pretreatment with petha wastewater for economically viable bioethanol production |
| title_full | Rice straw structure changes following green pretreatment with petha wastewater for economically viable bioethanol production |
| title_fullStr | Rice straw structure changes following green pretreatment with petha wastewater for economically viable bioethanol production |
| title_full_unstemmed | Rice straw structure changes following green pretreatment with petha wastewater for economically viable bioethanol production |
| title_short | Rice straw structure changes following green pretreatment with petha wastewater for economically viable bioethanol production |
| title_sort | rice straw structure changes following green pretreatment with petha wastewater for economically viable bioethanol production |
| url | https://doi.org/10.1038/s41598-022-14627-7 |
| work_keys_str_mv | AT dollykumari ricestrawstructurechangesfollowinggreenpretreatmentwithpethawastewaterforeconomicallyviablebioethanolproduction AT radhikasingh ricestrawstructurechangesfollowinggreenpretreatmentwithpethawastewaterforeconomicallyviablebioethanolproduction |