Two-step pyrolysis of corncob for value-added chemicals and high-quality bio-oil: Effects of alkali and alkaline earth metals

被引：32
作者：
Zhang, Liqiang [1 ]
Li, Shanshan [1 ]
Ding, Haozhi [1 ]
Zhu, Xifeng [1 ]
机构：
[1] Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China
来源：
WASTE MANAGEMENT | 2019年 / 87卷
基金：
中国国家自然科学基金;
关键词：
Two-step pyrolysis; Alkali and alkaline earth metals; Value-added chemicals; Py-GC/MS; TG-FTIR; TG-FTIR; TORREFACTION PRETREATMENTS; SULFURIC-ACID; RICE STRAW; BIOMASS; CELLULOSE; LIGNIN; HEMICELLULOSE; CONVERSION; WASTE;
D O I：
10.1016/j.wasman.2019.03.002
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Two-step pyrolysis (TSP) of corncob(CC) coupled with water and acid washing pretreatment was conducted to investigate the effects of alkali and alkaline earth metals (AAEMs) on TSP by Py-GC/MS. TG-FTIR was used to analyze the pyrolysis characteristics of the samples. The results showed that the removal of AAEMs postponed the pyrolysis process and significantly influenced the distribution of the pyrolysis products. As the content of AAEMs decreased, the bio-oil yield increased and the biochar yield decreased. TSP of CC achieved high selectivities for phenols and ketones in the first step and for hydrocarbons in the second step. TSP of acid-washed corncob (ACC) achieved high selectivities for furans in the first step and for sugars in the second step. Additionally, some value-added chemicals such as furfural (11.54%, ACC), 4-vinylphenol (23.57%, CC) and levoglucosan (43.05%, ACC) were also enriched in TSP. Therefore, a promising polygeneration scheme of TSP for the efficient utilization of biomass was proposed. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：709 / 718
页数：10
相关论文
共 53 条
  • [11] Biomass valorisation by staged degasification A new pyrolysis-based thermochemical conversion option to produce value-added chemicals from lignocellulosic biomass
    de Wild, P. J.
    den Uil, H.
    Reith, J. H.
    Kiel, J. H. A.
    Heeres, H. J.
    [J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2009, 85 (1-2) : 124 - 133
  • [12] Effect of water washing on fuel properties, pyrolysis and combustion characteristics, and ash fusibility of biomass
    Deng, Lei
    Zhang, Tao
    Che, Defu
    [J]. FUEL PROCESSING TECHNOLOGY, 2013, 106 : 712 - 720
  • [13] Thermal degradation of beech wood with thermogravimetry/Fourier transform infrared analysis
    Ding, Yanming
    Ezekoye, Ofodike A.
    Lu, Shouxiang
    Wang, Changjian
    [J]. ENERGY CONVERSION AND MANAGEMENT, 2016, 120 : 370 - 377
  • [14] Cellulose dehydration and depolymerization reactions during pyrolysis in the presence of phosphoric acid
    Dobele, G
    Rossinskaja, G
    Telysheva, G
    Meier, D
    Faix, O
    [J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 1999, 49 (1-2) : 307 - 317
  • [15] Effects of four types of dilute acid washing on moso bamboo pyrolysis using Py-GC/MS
    Dong, Qing
    Zhang, Shuping
    Zhang, Li
    Ding, Kuan
    Xiong, Yuanquan
    [J]. BIORESOURCE TECHNOLOGY, 2015, 185 : 62 - 69
  • [16] Influence of heating rates on the products of high-temperature pyrolysis of waste wood pellets and biomass model compounds
    Efika, Chidi E.
    Onwudili, Jude A.
    Williams, Paul T.
    [J]. WASTE MANAGEMENT, 2018, 76 : 497 - 506
  • [17] Characterization of primary thermal degradation features of lignocellulosic biomass after removal of inorganic metals by diverse solvents
    Eom, In-Yong
    Kim, Kwang-Ho
    Kim, Jae-Young
    Lee, Soo-Min
    Yeo, Hwan-Myung
    Choi, In-Gyu
    Choi, Joon-Weon
    [J]. BIORESOURCE TECHNOLOGY, 2011, 102 (03) : 3437 - 3444
  • [18] Effects of the cellulose, xylan and lignin constituents on biomass pyrolysis characteristics and bio-oil composition using the Simplex Lattice Mixture Design method
    Fan, Yongsheng
    Cai, Yixi
    Li, Xiaohua
    Jiao, Lihua
    Xia, Jisheng
    Deng, Xiuli
    [J]. ENERGY CONVERSION AND MANAGEMENT, 2017, 138 : 106 - 118
  • [19] TG-FTIR analysis of pecan shells thermal decomposition
    Fasina, Oladiran
    Littlefield, Brad
    [J]. FUEL PROCESSING TECHNOLOGY, 2012, 102 : 61 - 66
  • [20] Analysis of the relation between the cellulose, hemicellulose and lignin content and the thermal behavior of residual biomass from olive trees
    Garcia-Maraver, A.
    Salvachua, D.
    Martinez, M. J.
    Diaz, L. F.
    Zamorano, M.
    [J]. WASTE MANAGEMENT, 2013, 33 (11) : 2245 - 2249
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