{"title":"蛋壳注入稻壳灰分(RHA)催化稻壳油合成生物柴油的开发、评价及效率研究","authors":"Amit Kumar Rajak , Devi Lal Mahato , Shivani Dalal , Syeda Fatima Zeenath , Abdurahman Hajinur Hirad , Ramyakrishna Pothu , Masimukku Srinivaas , Senthilkumar Nangan , Rajender Boddula","doi":"10.1016/j.biombioe.2025.108347","DOIUrl":null,"url":null,"abstract":"<div><div>This study addresses the growing demand for sustainable fuel alternatives by developing a solid, eco-friendly catalyst for biodiesel production. Waste eggshells and rice husks were repurposed to create a heterogeneous alkaline catalyst, offering a low-cost and efficient solution. Rice husks were alkali-treated to extract silica, which was mixed with eggshells and calcined at 800 °C to produce calcium silicate in varying ratios (10 %–50 %). Among them, the catalyst containing 30 % eggshell (RHA+30 % EH) exhibited the highest calcium (44.58 %) and silica (51.82 %) content and was selected for transesterification of Lluppai ennai oil into biodiesel. Process parameters ethanol-to-oil ratio, catalyst loading, temperature, and time were optimized, yielding a maximum biodiesel conversion of 94.8 % under ideal conditions: 15:1 ethanol-to-oil molar ratio, 2 wt% catalyst, 150 min at 80 °C. The catalyst was characterized using FT-IR, SEM, XRD, XRF, and XPS, while the biodiesel product was validated via FT-IR, GC, and NMR techniques, meeting ASTM standards. The catalyst retained its efficiency over five reuse cycles, confirming its potential for industrial application as a sustainable, reusable, and effective catalyst for biodiesel synthesis.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"204 ","pages":"Article 108347"},"PeriodicalIF":5.8000,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Development, assessment, and efficiency of rice husk ash (RHA) infused by eggshell as a hybrid catalyst towards biodiesel synthesis from iluppai ennai oil\",\"authors\":\"Amit Kumar Rajak , Devi Lal Mahato , Shivani Dalal , Syeda Fatima Zeenath , Abdurahman Hajinur Hirad , Ramyakrishna Pothu , Masimukku Srinivaas , Senthilkumar Nangan , Rajender Boddula\",\"doi\":\"10.1016/j.biombioe.2025.108347\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study addresses the growing demand for sustainable fuel alternatives by developing a solid, eco-friendly catalyst for biodiesel production. Waste eggshells and rice husks were repurposed to create a heterogeneous alkaline catalyst, offering a low-cost and efficient solution. Rice husks were alkali-treated to extract silica, which was mixed with eggshells and calcined at 800 °C to produce calcium silicate in varying ratios (10 %–50 %). Among them, the catalyst containing 30 % eggshell (RHA+30 % EH) exhibited the highest calcium (44.58 %) and silica (51.82 %) content and was selected for transesterification of Lluppai ennai oil into biodiesel. Process parameters ethanol-to-oil ratio, catalyst loading, temperature, and time were optimized, yielding a maximum biodiesel conversion of 94.8 % under ideal conditions: 15:1 ethanol-to-oil molar ratio, 2 wt% catalyst, 150 min at 80 °C. The catalyst was characterized using FT-IR, SEM, XRD, XRF, and XPS, while the biodiesel product was validated via FT-IR, GC, and NMR techniques, meeting ASTM standards. The catalyst retained its efficiency over five reuse cycles, confirming its potential for industrial application as a sustainable, reusable, and effective catalyst for biodiesel synthesis.</div></div>\",\"PeriodicalId\":253,\"journal\":{\"name\":\"Biomass & Bioenergy\",\"volume\":\"204 \",\"pages\":\"Article 108347\"},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2025-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Biomass & Bioenergy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0961953425007585\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"AGRICULTURAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biomass & Bioenergy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0961953425007585","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURAL ENGINEERING","Score":null,"Total":0}
Development, assessment, and efficiency of rice husk ash (RHA) infused by eggshell as a hybrid catalyst towards biodiesel synthesis from iluppai ennai oil
This study addresses the growing demand for sustainable fuel alternatives by developing a solid, eco-friendly catalyst for biodiesel production. Waste eggshells and rice husks were repurposed to create a heterogeneous alkaline catalyst, offering a low-cost and efficient solution. Rice husks were alkali-treated to extract silica, which was mixed with eggshells and calcined at 800 °C to produce calcium silicate in varying ratios (10 %–50 %). Among them, the catalyst containing 30 % eggshell (RHA+30 % EH) exhibited the highest calcium (44.58 %) and silica (51.82 %) content and was selected for transesterification of Lluppai ennai oil into biodiesel. Process parameters ethanol-to-oil ratio, catalyst loading, temperature, and time were optimized, yielding a maximum biodiesel conversion of 94.8 % under ideal conditions: 15:1 ethanol-to-oil molar ratio, 2 wt% catalyst, 150 min at 80 °C. The catalyst was characterized using FT-IR, SEM, XRD, XRF, and XPS, while the biodiesel product was validated via FT-IR, GC, and NMR techniques, meeting ASTM standards. The catalyst retained its efficiency over five reuse cycles, confirming its potential for industrial application as a sustainable, reusable, and effective catalyst for biodiesel synthesis.
期刊介绍:
Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials.
The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy.
Key areas covered by the journal:
• Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation.
• Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal.
• Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes
• Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation
• Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.