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Effects of different pretreatment methods on millet straw and millet bran for fuel properties and pyrolysis bio-oil

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Abstract

Effects of acid washing, torrefaction, and a combination of acid washing and torrefaction pretreatment millet straw (MS) and millet bran (MB) were investigated. The physicochemical properties of MS and MB before and after acid washing pretreatment were analyzed using industrial analysis, elemental analysis, component analysis, and Fourier infrared spectroscopy. Pyrolysis experiments using tube furnace and GC–MS analysis to investigate the composition and properties of bio-oil by comparing MS and MB under different temperatures. The results indicated that both acid washing and torrefaction pretreatment had a significant effect on fuel characteristics of MS and MB, while their effects on the molar ratios of C/O and C/H were opposed. The combination of acid washing and torrefaction pretreatment was beneficial for improving the fuel characteristics and increasing the yield of bio-oil. Compared to torrefaction pretreatment, the bio-oil yield of acid washing MS and acid washing MB all increased to 17% at 230 ℃. In addition, the relative content of sugars derived from MS and MB increased, but the relative content of oxygenates including acids, ketones, and furans, etc., decreased. These findings indicated that the combination of acid washing and torrefaction pretreatment was a promising method to improve the higher heating value and quality of bio-oil.

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References

  1. Ilyin SO, Makarova VV. Bio-oil: production, modification, and application. chem tech fuels oil. Chem Technol Fuels Oils. 2022;58:29–44.

    CAS  Google Scholar 

  2. Singhal A, Goel A, Bhatnagar A, et al. Improving inorganic composition and ash fusion behavior of spruce bark by leaching with water, acetic acid, and steam pre-treatment condensate. Chem Eng J. 2023;452: 139351.

    CAS  Google Scholar 

  3. Vuppaladadiyam AK, Vuppaladadiyam SS, Sahoo A, et al. Bio-oil and biochar from the pyrolytic conversion of biomass: a current and future perspective on the trade-off between economic, environmental, and technical indicators. Sci Total Environ. 2023;857: 159155.

    CAS  PubMed  Google Scholar 

  4. Drugkar K, Rathod W, Sharma T, et al. Advanced separation strategies for up-gradation of bio-oil into value-added chemicals: a comprehensive review. Sep Purif Technol. 2022;283: 120149.

    CAS  Google Scholar 

  5. Mong GR, Chong CT, Chong WWF, et al. Progress and challenges in sustainable pyrolysis technology: reactors, feedstocks and products. Fuel. 2022;324: 124777.

    CAS  Google Scholar 

  6. Zhou S, Tang S, Li G, et al. Catalytic fast pyrolysis of herbal medicine wastes over zeolite catalyst for aromatic hydrocarbons production. Fuel. 2023;333: 126311.

    CAS  Google Scholar 

  7. Zhuang X, Gan Z, Chen D, et al. An approach for upgrading bio-oil by using heavy bio-oil co-pyrolyzed with bamboo leached with light bio-oil. Fuel. 2023;331: 125931.

    CAS  Google Scholar 

  8. Casoni AI, Hoch PM, Volpe MA, Gutierrez VS. Catalytic conversion of furfural from pyrolysis of sunflower seed hulls for producing bio-based furfuryl alcohol. J Cleaner Prod. 2018;178:237–46.

    CAS  Google Scholar 

  9. Li Y, Yellezuome D, Liu R, Cai J, Gao Y. Investigation of product selectivity and kinetics of poplar sawdust catalytic pyrolysis over bi-metallic Iron-Nickel/ZSM-5 catalyst. Bioresour Technol. 2022;349:126838.

    CAS  PubMed  Google Scholar 

  10. Kabir G, Hameed BH. Recent progress on catalytic pyrolysis of lignocellulosic biomass to high-grade bio-oil and bio-chemicals. Renew Sustain Energy Rev. 2017;70:945–67.

    CAS  Google Scholar 

  11. Wigley T, Yip A, Pang S. Pretreating biomass via demineralisation and torrefaction to improve the quality of crude pyrolysis oil. Energy. 2016;109:481–94.

    CAS  Google Scholar 

  12. Zheng A, Xia S, Cao F, Liu S, Li H. Directional valorization of eucalyptus waste into value-added chemicals by a novel two-staged controllable pyrolysis process. Chem Eng J. 2020;404: 127045.

    Google Scholar 

  13. Carpenter D, Westover TL, Czernik S, et al. Biomass feedstocks for renewable fuel production: a review of the impacts of feedstock and pretreatment on the yield and product distribution of fast pyrolysis bio-oils and vapors. Green Chem. 2014;16:384–406.

    CAS  Google Scholar 

  14. Yao Z, Ma X, Xiao Z. The effect of two pretreatment levels on the pyrolysis characteristics of water hyacinth. Renew Energ. 2020;151:514–27.

    CAS  Google Scholar 

  15. Ma Z, Wang J, Zhou H, Zhang Y, Yang Y, Liu X, et al. Relationship of thermal degradation behavior and chemical structure of lignin isolated from palm kernel shell under different process severities. Fuel Process technol. 2018;181:142–56.

    CAS  Google Scholar 

  16. Chen D, Zhou J, Zhang Q. Effects of torrefaction on the pyrolysis behavior and bio-oil properties of rice husk by using TG-FTIR and Py-GC/MS. Energ Fuel. 2014;28:5857–63.

    CAS  Google Scholar 

  17. Jiang Y, Zhang H, Shao S, Xiao R. Torrefaction pretreatment on the pyrolysis performances of biomass. Combust Sci Technol. 2015;21:229–35.

    CAS  Google Scholar 

  18. Chen DY, Li Y, Deng M, et al. Effect of torrefaction pretreatment and catalytic pyrolysis on the pyrolysis poly-generation of pine wood. Bioresource Technol. 2016;214:615–22.

    CAS  Google Scholar 

  19. Saddawi A, Jones JM, Williams A, et al. Commodity fuels from biomass through pretreatment and torrefaction: effects of mineral content on torrefied fuel characteristics and quality. Energ Fuel. 2012;26:6466–74.

    CAS  Google Scholar 

  20. Özbay N, Yaman E, Yargıç AŞ, et al. Hydrothermal vs. dilute acid pre-treatments: comparison of the biomass properties, distribution of pyrolysis products, and bio-oil characteristics. Biomass Convers Biorefin. 2021;13:739–53.

    Google Scholar 

  21. Raveendran K, Ganesh A, Khilar KC. Influence of mineral matter on biomass pyrolysis characteristics. Fuel. 1995;74:1812–22.

    CAS  Google Scholar 

  22. Eom IY, Kim KH, Kim JY, et al. Characterization of primary thermal degradation features of lignocellulosic biomass after removal of inorganic metals by diverse solvents. Bioresource Technol. 2011;102:3437–44.

    CAS  Google Scholar 

  23. Zhang L, Li S, Li K, Zhu X. Two-step pyrolysis of corncob for value-added chemicals and high quality bio-oil: effects of pyrolysis temperature and residence time. Energ Convers Manage. 2018;166:260–7.

    CAS  Google Scholar 

  24. Channiwala SA, Parikh PP. A unified correlation for estimating HHV of solid, liquid and gaseous fuels. Fuel. 2002;81(8):1051–63.

    CAS  Google Scholar 

  25. Chen D, Gao D, Capareda SC, Huang S, Wang Y. Effects of hydrochloric acid washing on the microstructure and pyrolysis bio-oil components of sweet sorghum bagasse. Bioresource Technol. 2019;277:37–45.

    CAS  Google Scholar 

  26. Kumar R, Mago G, Balan V, Wyman CE. Physical and chemical characterizations of corn stover and poplar solids resulting from leading pretreatment technologies. Bioresource Technol. 2009;100:3948–62.

    CAS  Google Scholar 

  27. Ho SH, Zhang CY, Tao F, Zhang C, Chen WH. Microalgal torrefaction for solid biofuel production. Trends Biotechnol. 2020;38:1023–33.

    CAS  PubMed  Google Scholar 

  28. Chen WH, Lu KM, Tsai CM. An experimental analysis on property and structure variations of agricultural wastes undergoing torrefaction. Appl Energy. 2012;100:318–25.

    CAS  Google Scholar 

  29. Wang Y, Akbarzadeh A, Chong L, Du JY, Awasthi M, Liang DT. Catalytic pyrolysis of lignocellulosic biomass for bio-oil production: a review. Chemosphere. 2022;297: 134181.

    CAS  PubMed  Google Scholar 

  30. Carvalho DM, de Queiroz JH, Colodette JL. Assessment of alkaline pretreatment for the production of bioethanol from eucalyptus, sugarcane bagasse and sugarcane straw. Ind Crop Prod. 2016;94:932–41.

    CAS  Google Scholar 

  31. Cui ZP, Li ZH, Li N, et al. Effects of water washing pretreatment on pyrolysis properties and products of peanut shell. Kezaisheng Nengyuan/Renew Energy Resour. 2018;36:1431–6.

    Google Scholar 

  32. Sun HL, Feng DD, Sun SZ, Zhao YY, Zhang LY. Effect of acid washing and K/Ca loading on corn straw with the characteristics of gas-solid products during its pyrolysis. Biomass Bioenerg. 2022;165: 106569.

    CAS  Google Scholar 

  33. Ru B, Wang S, Dai G, Zhang L. Effect of torrefaction on biomass physicochemical characteristics and the resulting pyrolysis behavior. Energ Fuel. 2015;29(9):5865–74.

    CAS  Google Scholar 

  34. Chen D, Zheng Z, Fu K. Torrefaction of biomass stalk and its effect on the yield and quality of pyrolysis products. Fuel. 2015;159:27–32.

    CAS  Google Scholar 

  35. Duranay ND, Çaycı N. Production of solid fuel with torrefaction from agricultural wastes. Res Eng Struct Mater. 2019;5:311–20.

    Google Scholar 

  36. Cen K, Zhuang X, Gan Z, Ma Z, Chen D. Effect of the combined pretreatment of leaching and torrefaction on the production of bio-aromatics from rice straw via the shape selective catalytic fast pyrolysis. Energy Rep. 2021;7:732–9.

    Google Scholar 

  37. Chen DY, Liu QY, Sun Q, Yi LI, Zhang M, Jin-Yang LI. FTIR analysis and pyrolysis mechanism study of soybean stalk. Renew Energy Resour. 2012;30:40–4.

    CAS  Google Scholar 

  38. Peng YY, Wu SB. Characteristics and kinetics of sugarcana bagasse hemicellulose pyrolysis by TG-FTIR. Chem Ind Chem Eng Q. 2009;28:1478–84.

    CAS  Google Scholar 

  39. Zou J, Ling. (2008) Degradation of Cellulose of Walnut Shell Based on FTIR Characteristics. Scientia Silvae Sinicae. 44:129-34.

  40. Banerji A, Balakrishnan M, Kishore VVN. Low severity dilute-acid hydrolysis of sweet sorghum bagasse. Appl Energ. 2013;104:197–206.

    CAS  Google Scholar 

  41. Hsu TC, Guo G-L, Chen WH, Hwang WS. Effect of dilute acid pretreatment of rice straw on structural properties and enzymatic hydrolysis. Bioresource Technol. 2010;101:4907–13.

    CAS  Google Scholar 

  42. Sun Q, Foston M, Meng X, Sawada D, Kumar RR. Effect of lignin content on changes occurring in poplar cellulose ultrastructure during dilute acid pretreatment. Biotechnol Biofuels. 2014;150:1–14.

    Google Scholar 

  43. Kumar R, Wyman CE. Cellulase adsorption and relationship to features of corn stover solids produced by leading pretreatments. Biotechnol Bioeng. 2010;103:252–67.

    Google Scholar 

  44. Zhao XB, Wang L, Liu DH. Peracetic acid pretreatment of sugarcane bagasse for enzymatic hydrolysis: a continued work. J Chem Technol Biotechnol. 2008;83:950–6.

    CAS  Google Scholar 

  45. Peng H, Xu J, Wu Y. Effect of temperature on the physicochemical properties of cellulose hemicellulose and caliclulose of lignin. J Agric Eng-Italy. 2018;34:149–56.

    Google Scholar 

  46. Zhou L, Li F, Jiang E. Analysis of wood vinegar liquid composition based on TG-FTIR cotton straw pyrolysis process. Renew Energ. 2012;30:74–7.

    CAS  Google Scholar 

  47. Chen WH, Kuo PC. Torrefaction and co-torrefaction characterization of hemicellulose, cellulose and lignin as well as torrefaction of some basic constituents in biomass. Energy-Oxford. 2011;36:803–11.

    CAS  Google Scholar 

  48. Guo X, Wang S, Liu Q. The influence of different baking conditions on the mechanism of cellulose pyrolysis was studied. J Solar Energy. 2009;30:1246–51.

    CAS  Google Scholar 

  49. Hosseinpour S, Babatabar MA, Mousavi VM, et al. Production of high-quality bio-product by pyrolysis of acid/metal modified chickpea husk. Int J Energy Res. 2022;46:20228–48.

    CAS  Google Scholar 

  50. Mourant D, Wang Z, He M, Xiao SW, Garcia Perez M, Ling K, et al. Mallee wood fast pyrolysis: Effects of alkali and alkaline earth metallic species on the yield and composition of bio-oil. Fuel. 2011;90:2915–22.

    CAS  Google Scholar 

  51. Chen D, Cen K, Cao X, Li Y, Zhang Y, Ma H. Restudy on torrefaction of corn stalk from the point of view of deoxygenation and decarbonization. J Anal Appl Pyrol. 2018;135:85–93.

    Google Scholar 

  52. Fahmi R, Bridgwater AV, Donnison I, et al. The effect of lignin and inorganic species in biomass on pyrolysis oil yields, quality and stability. Fuel. 2008;87:1230–40.

    CAS  Google Scholar 

  53. Oudenhoven SRG, Westerhof RJM, Kersten SRA. Fast pyrolysis of organic acid leached wood, straw, hay and bagasse: improved oil and sugar yields. J Anal Appl Pyrol. 2015;116:253–62.

    CAS  Google Scholar 

  54. Lu X, Han T, Jiang J, Sun K, Yang W. Comprehensive insights into the influences of acid-base properties of chemical pretreatment reagents on biomass pyrolysis behavior and wood vinegar properties. J Anal Appl Pyrol. 2020;151:104907.

    CAS  Google Scholar 

  55. Cao B, Wang S, Hu Y, Abomohra EF, Qian L, He Z, et al. Effect of washing with diluted acids on Enteromorpha clathrata pyrolysis products: towards enhanced bio-oil from seaweeds. Renew Energ. 2019;138:29–38.

    CAS  Google Scholar 

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Acknowledgements

The authors are grateful for financial of the Liaoning Province Education Department Project (No.LSNJC202001 and LJKZ0694) and the Ministry of Agriculture and Rural Affairs Key Laboratory Open Project (KLERUAR2022-03), Key Laboratory of Energy Resource Utilization, MARA, P. R. China. In addition, The authors thank Dr. Qing Sun for her guidance in the revision process of the thesis.

Funding

Funding was provided by Ministry of Agriculture and Rural Affairs Key Laboratory Open Project, (KLERUAR2022-03), Dongyu Chen, Liaoning Province Education Department Project, (No.LSNJC202001 and LJKZ0694), Dongyu Chen.

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Authors and Affiliations

  1. College of Engineering, Shenyang Agricultural University, Shenyang, Liaoning, 110866, China

    Dongyu Chen, Jing Wang, Shun Li, Yide  Liu, Xiaojian  Zhu, Jin Li, Ting Zhang, Fanbin Meng, Weisheng Niu, Yueyang Liu & Qing Sun

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  1. Dongyu Chen
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Contributions

QS helped in conceptualization, methodology, and supervision. DC helped in conceptualization, writing—review and editing, and project administration. JW worked in methodology, data curation, writing—original draft, and preparation. SL and YL contributed to data curation and resources. XZ helped in characterization. JL and TZ worked in investigation, data curation, and resources. FM contributed to writing—review and editing and supervision. WN contributed to writing—review and editing. YL helped in conceptualization and supervision.

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Correspondence to Qing Sun.

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Chen, D., Wang, J., Li, S. et al. Effects of different pretreatment methods on millet straw and millet bran for fuel properties and pyrolysis bio-oil. J Therm Anal Calorim 148, 10429–10439 (2023). https://doi.org/10.1007/s10973-023-12393-w

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