文献类型：期刊文献

中文题名：杉木屑提取精油及制活性炭联产技术研究

英文题名：Research on the Co-production of Activated Carbon and Extracting Essential Oil From Chinese Fir Sawdust

作者：文世涛[1] 卢辛成[1] 徐茹婷[1] 许伟[1] 林冠烽[2] 孙康[1]

第一作者：文世涛

机构：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏省林业资源高效加工利用协同创新中心,江苏南京210042;[2]福建农林大学材料工程学院,福建福州350002

年份：2025

卷号：45

期号：3

起止页码：113-120

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：;北大核心:【北大核心2023】；

基金：国家重点研发计划资助项目(2023YFD2201601)。

语种：中文

中文关键词：杉木精油;二氧化碳超临界;活性炭;联产技术

外文关键词：Chinese fir essential oil;carbon dioxide supercritical;activated carbon;co-generation technology

分类号：TQ35;TQ424

摘要：用超临界二氧化碳萃取技术(SFE)提取杉木精油,并以提取精油后的杉木屑残渣为原料,利用磷酸活化法制备高吸附木质活性炭,对萃取条件及磷酸浸渍工艺进行优化,得到SFE萃取杉木精油的较佳条件为萃取温度35℃、萃取压力30 MPa、萃取时间100 min,该条件下杉木精油得率达2.42%。磷酸浸渍的较佳工艺条件为浸渍温度130℃、浸渍时间60 min,磷酸质量分数55%,该条件下制备的活性炭,其碘吸附值达865.8 mg/g,亚甲基蓝吸附值达285.0 mg/g,能满足商业应用要求。采用SEM、BET以及XRD表征杉木萃取精油前后的形貌特征、孔隙结构以及纤维素结晶区结构演变,并探究SFE对萃取后杉木屑的磷酸浸渍工艺影响。结果表明:SFE在精油提取过程中使杉木屑表面生成一定孔隙,杉木屑萃取精油后,其比表面积从2.04 m^(2)/g提升为10.42 m^(2)/g;XRD结果表明SFE在磷酸浸渍过程中对杉木结晶度具有破坏作用。杉木屑提取精油联产高吸附活性炭较其他生产方式具有更高效益优势。
Supercritical fluid extraction with CO_(2)(SFE)was employed to extract essential oil from Chinese fir,and the postextraction Chinese fir sawdust residue was used to prepare highly adsorptive activated carbon via phosphoric acid activation.Optimization of SFE parameters and phosphoric acid impregnation processes generated the following optimal conditions for SFE:extraction temperature of 35℃,pressure of 30 MPa,and time of 100 min,achieving an essential oil yield of 2.42%.The optimized phosphoric acid impregnation conditions included an impregnation temperature of 130℃,duration of 60 min,and phosphoric acid mass fraction of 55%,resulting in activated carbon with an iodine adsorption value of 865.8 mg/g and methylene blue adsorption capacity of 285.0 mg/g,meeting commercial application standards.Scanning electron microscopy(SEM),BET,and X-ray diffraction(XRD)were employed to characterize morphological features,pore structure,and cellulose crystallinity evolution of Chinese fir before and after SFE.Additionally,the influence of SFE on phosphoric acid impregnation was examined.Results indicated that SFE generated surface porosity on Chinese fir sawdust during extraction,increasing the specific surface area from 2.04 m^(2)/g to 10.42 m^(2)/g.XRD results indicated that SFE has a destructive effect on the crystallinity of Chinese fir during the phosphoric acid impregnation process.Economic evaluation demonstrated that the co-production of Chinese fir essential oil and high-adsorption activated carbon offered greater economic benefits compared to conventional methods,affirming the superiority of this integrated approach.