天然产物研究与开发 ›› 2021, Vol. 33 ›› Issue (8): 1371-1381.doi: 10.16333/j.1001-6880.2021.8.013

• 开发研究 • 上一篇    下一篇

基于实验与文献研究热解温度和原料对木醋液组分的影响

郭根茂1,2,3,黄青1,2,3*,王青青1,2,3,王麓雅1,2,3,刘银1,2,3,刘权1,2,3,苏雪松1,2,3   

  1. 1海南大学生态与环境学院;2海南省农林环境过程与生态调控重点实验室;3海南省热带生态环境修复工程研究中心,海口 570228

  • 出版日期:2021-08-28 发布日期:2021-08-30
  • 基金资助:
    海南省自然科学基金(319MS008);海南大学引进人才基金(KYQD(ZR)20032);国家自然科学基金(41571288);福建省自然科学基金引导(重点)项目(2015Y0084)

The effect of pyrolysis temperature and raw materials on the composition of wood vinegar based on experiments and literature

GUO Gen-mao1,2,3,HUANG Qing1,2,3*,WANG Qing-qing1,2,3,WANG Lu-ya1,2,3,LIU Yin1,2,3,LIU Quan1,2,3,SU Xue-song1,2,3   

  1. 1College of Ecology and Environment,Hainan University,Haikou;2Key Laboratoryof Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province;3Hainan Tropical Ecological Environment Restoration Engineering Research Center,Haikou 570228,China
  • Online:2021-08-28 Published:2021-08-30

摘要:

为探讨不同原料、温度对木醋液组分的影响及其相互关系,分析了不同温度段的桉树木醋液组分,利用木醋液、木醋酸、Wood vinegar、Pyroligenous acid、Smoke liquid和Prolysis liquid等关键词,检索和查阅了国内外主流数据库10个,文献发表时间从1996年至2020年,经甄别筛选关于木醋液组分与含量研究有效文献75篇,包括低温和高温段的桉树木醋液组分数据。采用聚类热图分析、NMDS分析、线性回归分析、相关性分析和随机森林模型等统计学方法对木醋液组分进行分析,结果表明:热解温度低于和高于350 ℃的木醋液组分存在明显差异(P<0.01,R=0.466)。在热解温度低于350 ℃时,酸类物质平均相对含量最高(39.66%),当温度高于350 ℃时,酚类物质相对含量较低温段增加了1.9倍,酸类物质和醛类物质含量分别减少了86%和56%。温度与酸类物质(y=-0.08x+55.7)和酚类物质(y=0.03x+19.15)分别呈显著负相关和正相关线性关系。随机森林模型分析结果表明:木醋液组分中酸类物质(MDA =14.9%,MDGini=25.4%)和酚类物质(MDA =9.7%,MDGini=19.25%)是木醋液组分的主要物质。酚类物质和酸类物质呈显著负相关(P<0.01,r2=-0.43),醇类物质和酮类物质呈极显著正相关(P<0.01,r2=0.23),其中,乙酸(29.48%)是酸类物质中含量最高的化合物,其次为丙酸(3.13%),酚类物质以苯酚(8.07%)、2-甲氧基苯酚(8.02%)和2,6-二甲氧基苯酚(5.72%)等化合物为主。糠醛(8.31%)、1-羟基-2-丙酮(5.18%)和糠醇(2.52%)分别是醛类物质、酮类和醇类物质的主要化合物。本研究为木醋液功能性产品的开发以及生物质固废资源化利用提供参考与借鉴。

关键词: 木醋液, 酸类物质, 酚类物质, 化学组分, 随机森林模型

Abstract:

In order to explore the effects of different raw materials and temperatures on the composition of wood vinegar.Components of eucalyptus wood vinegar in different temperature ranges were analyzed,and keywords of wood vinegar,pyroligenous acid,smoke liquid,and pyrolysis liquid were searched in 10 domestic and international databases.The scientific papers were published from 1996 to 2020 and a total of 75 scientific papers on the composition of wood vinegar were obtained according to the requirements of scientific papers screening,as well as GC-MS analysis of eucalyptus wood vinegar components at different temperature ranges of 270-340 ℃ and 370-400 ℃.The analysis of wood vinegar compositions were conducted by statistical analysis methods such as cluster heat map analysis,NMDS analysis,linear equation relationship analysis,correlation analysis and random forest model.The results showed that there were significant differences in the composition of wood vinegar with pyrolysis temperature lower than 350 ℃and higher than 350 ℃ (P<0.01,R=0.466);when the pyrolysis temperature is lower than 350 ℃,the average relative content of acids is the highest,accounted for 39.66%.When the temperature higher than 350 ℃,compared with pyrolysis temperature ranges lower than 350 ℃,the relative contents of phenolics and ketones increases by 1.9 times and 1.3 times,respectively.Acids and aldehydes were reduced by 86% and 56%,respectively;and the contents of ketones,aldehydes,alcohols,lipids and other substances were less than that of acids and phenolics.Temperature was negatively linear relationship with acids (y=-0.08x+55.7) and positively linear relationship with phenolics (y=0.03x+19.15).The random forest model results showed that the acids (MDA =14.9% and MDGini=25.4%) and phenolics(MDA=9.7% and MDGini = 19.25%) were the main components of wood vinegar;phenolics significantly negatively correlated with acids (P<0.01,r2=-0.43),alcohols were significant negative correlation with ketones (P<0.01,r2=0.23),among them,acetic acid (29.48%) was the highest content among acids compounds,followed by propionic acid (3.13%).Phenol (8.07%),2-methoxyphenol (8.02%) and 2,6-dimethoxyphenol (5.72%) main the phenolics compounds,while furfural (8.31%),1-hydroxy-2-acetone (5.18%) and furfuryl alcohol (2.52%) were the main compounds of aldehydes,ketones and alcohols.This research will provide references for the resource utilization of biomass waste and the development of wood vinegar functional products.

Key words: wood vinegar, acids, phenols, chemical composition, random forest model

中图分类号:  X705