{"title":"棕榈仁壳转化为可持续能源以及湿法合成纳米铁颗粒对其热降解动力学的影响","authors":"","doi":"10.1016/j.biteb.2024.101933","DOIUrl":null,"url":null,"abstract":"<div><p>Pisifera Palm kernel shells (PPKS) were torrefied at 260, 280, and 300 °C, and ASTM methods were used to determine variations in their ultimate and proximate parameters. Iron nanoparticles were synthesized via coprecipitation of FeCl<sub>3</sub>.6H<sub>2</sub>O and NaBH<sub>4</sub>, characterized, and used as catalysts in the thermal degradation of torrefied PPKS. Torrefied PPKS samples showed moderate MC (9.26–10.73 %), high carbon content (46.74 %), AC (2.77–3.39 %), VM (49.48–54.12 %), and FC (31.76 %–38.49 %). At 300 °C, the calorific value of the untreated PPKS increased by 13.3 % to 18.02 kJ/mol, making it suitable as a solid fuel. An increase in heating rate enhances faster decomposition and higher devolatization of torrefied PPKS at lower temperatures. Hemicellulosic components degrade at a reduced temperature as compared to cellulosic and lignin components. The 47.58 % Fe in the nanoparticle made it a good catalyst for the thermal degradation of PPKS. The E<sub>a</sub> expended on catalyzed torrefied PPKS was lower as compared to torrefied PPKS calculated via the Coats-Redfern kinetic model. Torrefaction improved untreated PPKS by achieving higher fuel quality and calorific value, suitable physical properties, and a suitable chemical composition. The nano-Fe was suitable to reduce E<sub>a</sub> needed for the thermal degradation of torrefied PPKS.</p></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Conversion of palm kernel shell to sustainable energy and the effect of wet synthesized nanoparticles of iron on its thermal degradation kinetics\",\"authors\":\"\",\"doi\":\"10.1016/j.biteb.2024.101933\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Pisifera Palm kernel shells (PPKS) were torrefied at 260, 280, and 300 °C, and ASTM methods were used to determine variations in their ultimate and proximate parameters. Iron nanoparticles were synthesized via coprecipitation of FeCl<sub>3</sub>.6H<sub>2</sub>O and NaBH<sub>4</sub>, characterized, and used as catalysts in the thermal degradation of torrefied PPKS. Torrefied PPKS samples showed moderate MC (9.26–10.73 %), high carbon content (46.74 %), AC (2.77–3.39 %), VM (49.48–54.12 %), and FC (31.76 %–38.49 %). At 300 °C, the calorific value of the untreated PPKS increased by 13.3 % to 18.02 kJ/mol, making it suitable as a solid fuel. An increase in heating rate enhances faster decomposition and higher devolatization of torrefied PPKS at lower temperatures. Hemicellulosic components degrade at a reduced temperature as compared to cellulosic and lignin components. The 47.58 % Fe in the nanoparticle made it a good catalyst for the thermal degradation of PPKS. The E<sub>a</sub> expended on catalyzed torrefied PPKS was lower as compared to torrefied PPKS calculated via the Coats-Redfern kinetic model. Torrefaction improved untreated PPKS by achieving higher fuel quality and calorific value, suitable physical properties, and a suitable chemical composition. The nano-Fe was suitable to reduce E<sub>a</sub> needed for the thermal degradation of torrefied PPKS.</p></div>\",\"PeriodicalId\":8947,\"journal\":{\"name\":\"Bioresource Technology Reports\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-08-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bioresource Technology Reports\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2589014X24001749\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Environmental Science\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bioresource Technology Reports","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589014X24001749","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Environmental Science","Score":null,"Total":0}
引用次数: 0
摘要
在 260、280 和 300 °C 下对棕榈仁壳(PPKS)进行托烧,并采用 ASTM 方法测定其最终和近似参数的变化。通过共沉淀 FeCl3.6H2O 和 NaBH4 合成了铁纳米粒子,对其进行了表征,并将其用作热降解托烧 PPKS 的催化剂。焦烧 PPKS 样品的 MC 值(9.26-10.73 %)适中,含碳量(46.74 %)、AC 值(2.77-3.39 %)、VM 值(49.48-54.12 %)和 FC 值(31.76 %-38.49 %)较高。300 °C 时,未经处理的 PPKS 热量值增加了 13.3 %,达到 18.02 kJ/mol,因此适合用作固体燃料。加热速度的增加会加快分解速度,并使托烧聚丙烯卡纸在较低温度下的分解率更高。与纤维素和木质素成分相比,半纤维素成分的降解温度较低。纳米颗粒中 47.58% 的铁使其成为 PPKS 热降解的良好催化剂。通过 Coats-Redfern 动力学模型计算得出的经催化的托布津 PPKS 所消耗的 Ea 值低于托布津 PPKS。通过获得更高的燃料质量和热值、合适的物理性质以及合适的化学成分,Torrefaction 对未经处理的 PPKS 进行了改进。纳米铁适用于降低托热PPKS热降解所需的Ea。
Conversion of palm kernel shell to sustainable energy and the effect of wet synthesized nanoparticles of iron on its thermal degradation kinetics
Pisifera Palm kernel shells (PPKS) were torrefied at 260, 280, and 300 °C, and ASTM methods were used to determine variations in their ultimate and proximate parameters. Iron nanoparticles were synthesized via coprecipitation of FeCl3.6H2O and NaBH4, characterized, and used as catalysts in the thermal degradation of torrefied PPKS. Torrefied PPKS samples showed moderate MC (9.26–10.73 %), high carbon content (46.74 %), AC (2.77–3.39 %), VM (49.48–54.12 %), and FC (31.76 %–38.49 %). At 300 °C, the calorific value of the untreated PPKS increased by 13.3 % to 18.02 kJ/mol, making it suitable as a solid fuel. An increase in heating rate enhances faster decomposition and higher devolatization of torrefied PPKS at lower temperatures. Hemicellulosic components degrade at a reduced temperature as compared to cellulosic and lignin components. The 47.58 % Fe in the nanoparticle made it a good catalyst for the thermal degradation of PPKS. The Ea expended on catalyzed torrefied PPKS was lower as compared to torrefied PPKS calculated via the Coats-Redfern kinetic model. Torrefaction improved untreated PPKS by achieving higher fuel quality and calorific value, suitable physical properties, and a suitable chemical composition. The nano-Fe was suitable to reduce Ea needed for the thermal degradation of torrefied PPKS.