{"title":"Oxidative torrefaction of woody biomass: introducing a modified severity factor","authors":"Udya Madhavi Aravindi Devaraja, Chamini Lakshika Wickramarathna Dissanayake, Duleeka Sandamali Gunarathne, Wei-Hsin Chen","doi":"10.1007/s13399-024-05857-y","DOIUrl":null,"url":null,"abstract":"<p>Torrefaction experiments of Rubberwood and Gliricidia were conducted at 250–300 °C for 30–60 min in a 3–9% oxygen environment to study the oxidative torrefaction behavior. The higher heating value of the torrefied Rubberwood increased from 18.9 to 24.68 MJ/kg and from 19.46 to 23.19 MJ/kg for Gliricidia under the most severe oxidative conditions. Effects of torrefaction conditions on the solid yield, VM removal, C enhancement, HHV enhancement, and energy yield were modeled using response surface methodology, and temperature and oxygen concentration mainly affected the torrefied biomass properties. Rubberwood recorded a significantly greater energy mass co-benefit index (EMCI) than Gliricidia. EMCI of oxidative torrefaction of Gliricidia showed no significant difference from that of inert conditions. A new severity factor was introduced for oxidative torrefaction, and the normalized severity factor showed a linear correlation with torrefied biomass properties, which could facilitate oxidative torrefaction modeling.</p>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biomass Conversion and Biorefinery","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s13399-024-05857-y","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Torrefaction experiments of Rubberwood and Gliricidia were conducted at 250–300 °C for 30–60 min in a 3–9% oxygen environment to study the oxidative torrefaction behavior. The higher heating value of the torrefied Rubberwood increased from 18.9 to 24.68 MJ/kg and from 19.46 to 23.19 MJ/kg for Gliricidia under the most severe oxidative conditions. Effects of torrefaction conditions on the solid yield, VM removal, C enhancement, HHV enhancement, and energy yield were modeled using response surface methodology, and temperature and oxygen concentration mainly affected the torrefied biomass properties. Rubberwood recorded a significantly greater energy mass co-benefit index (EMCI) than Gliricidia. EMCI of oxidative torrefaction of Gliricidia showed no significant difference from that of inert conditions. A new severity factor was introduced for oxidative torrefaction, and the normalized severity factor showed a linear correlation with torrefied biomass properties, which could facilitate oxidative torrefaction modeling.
期刊介绍:
Biomass Conversion and Biorefinery presents articles and information on research, development and applications in thermo-chemical conversion; physico-chemical conversion and bio-chemical conversion, including all necessary steps for the provision and preparation of the biomass as well as all possible downstream processing steps for the environmentally sound and economically viable provision of energy and chemical products.