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Fast pyrolysis of coffee grounds: Characteristics of product yields and biocrude oil quality

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  • Bok, Jin Pil
  • Choi, Hang Seok
  • Choi, Yeon Seok
  • Park, Hoon Chae
  • Kim, Seock Joon

Abstract

The high demand of renewable energy has been growing nowadays due to shortage of fossil fuels and global warming. The studies on fast pyrolysis of biomass were mostly in progress by using woody biomass, to investigate characteristics of biocrude oil and optimum conditions of fast pyrolysis. Currently a variety of biomass have been used for sample material of fast pyrolysis to produce biocrude oil. In particular, coffee grounds are expected to be a valuable energy source because of consumption growth of coffee and higher heating value than woody biomass. In the present experiment, coffee grounds were chosen as feedstock for fast pyrolysis. The objective of this work was to study the characteristics of product yields and biocrude oil quality depending on reaction temperatures ranging from 673 K to 873 K. Also, higher heating value, water content, viscosity, pH, density, ash, and solid residue of the collected biocrude oils were analyzed. From the result, the reaction temperature is the most important variable in fast pyrolysis of coffee grounds, significantly influencing the product yields. The highest yield of biocrude oil (54.85%) was obtained at 823 K. Also, the characteristics of biocrude oil were scrutinized by variations of experimental conditions.

Suggested Citation

  • Bok, Jin Pil & Choi, Hang Seok & Choi, Yeon Seok & Park, Hoon Chae & Kim, Seock Joon, 2012. "Fast pyrolysis of coffee grounds: Characteristics of product yields and biocrude oil quality," Energy, Elsevier, vol. 47(1), pages 17-24.
    • Handle: RePEc:eee:energy:v:47:y:2012:i:1:p:17-24
    DOI: 10.1016/j.energy.2012.06.003
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    References listed on IDEAS

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    1. Pütün, Ayşe E. & Apaydın, Esin & Pütün, Ersan, 2004. "Rice straw as a bio-oil source via pyrolysis and steam pyrolysis," Energy, Elsevier, vol. 29(12), pages 2171-2180.
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    1. Bok, Jin Pil & Choi, Hang Seok & Choi, Joon Weon & Choi, Yeon Seok, 2013. "Fast pyrolysis of Miscanthus sinensis in fluidized bed reactors: Characteristics of product yields and biocrude oil quality," Energy, Elsevier, vol. 60(C), pages 44-52.
    2. Leng, Erwei & He, Ben & Chen, Jingwei & Liao, Gaoliang & Ma, Yinjie & Zhang, Feng & Liu, Shuai & E, Jiaqiang, 2021. "Prediction of three-phase product distribution and bio-oil heating value of biomass fast pyrolysis based on machine learning," Energy, Elsevier, vol. 236(C).
    3. Battista, Federico & Barampouti, Elli Maria & Mai, Sofia & Bolzonella, David & Malamis, Dimitris & Moustakas, Konstantinos & Loizidou, Maria, 2020. "Added-value molecules recovery and biofuels production from spent coffee grounds," Renewable and Sustainable Energy Reviews, Elsevier, vol. 131(C).
    4. Rijo, Bruna & Soares Dias, Ana Paula & Ramos, Marta & de Jesus, Nicole & Puna, Jaime, 2021. "Catalyzed pyrolysis of coffee and tea wastes," Energy, Elsevier, vol. 235(C).
    5. Alsulami, Radi A. & El-Sayed, Saad A. & Eltaher, Mohamed A. & Mohammad, Akram & Almitani, Khalid H. & Mostafa, Mohamed E., 2023. "Pyrolysis kinetics and thermal degradation characteristics of coffee, date seed, and prickly pear wastes and their blends," Renewable Energy, Elsevier, vol. 216(C).
    6. Wang, Wei-Cheng & Jan, Jyun-Jhih, 2018. "From laboratory to pilot: Design concept and techno-economic analyses of the fluidized bed fast pyrolysis of biomass," Energy, Elsevier, vol. 155(C), pages 139-151.
    7. Merckel, Ryan D. & Labuschagne, Frederick J.W.J. & Heydenrych, Michael D., 2020. "Energy metrics of fuel juxtaposed with mass yield metrics," Renewable Energy, Elsevier, vol. 159(C), pages 371-379.
    8. Tomasz Matula & Jerzy Labaj & Krzysztof Nowacki & Leszek Blacha & Lukasz Kortyka & Lukasz Mycka & Piotr Madej & Lukasz Jaworek & Tomasz Wojtal, 2023. "Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper Industry," Energies, MDPI, vol. 16(5), pages 1-17, March.
    9. A. E. Atabani & Eyas Mahmoud & Muhammed Aslam & Salman Raza Naqvi & Dagmar Juchelková & Shashi Kant Bhatia & Irfan Anjum Badruddin & T. M. Yunus Khan & Anh Tuan Hoang & Petr Palacky, 2023. "Emerging potential of spent coffee ground valorization for fuel pellet production in a biorefinery," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 25(8), pages 7585-7623, August.
    10. Choi, Sang Kyu & Choi, Yeon Seok & Han, So Young & Kim, Seock Joon & Rahman, Tawsif & Jeong, Yeon Woo & Van Nguyen, Quynh & Cha, Young Rok, 2019. "Bio-crude oil production from a new genotype of Miscanthus sacchariflorus Geodae-Uksae 1," Renewable Energy, Elsevier, vol. 144(C), pages 153-158.
    11. Sang Kyu Choi & Yeon Seok Choi & Yeon Woo Jeong & So Young Han & Quynh Van Nguyen, 2020. "Characteristics of Flame Stability and Gaseous Emission of Bio-Crude Oil from Coffee Ground in a Pilot-Scale Spray Burner," Energies, MDPI, vol. 13(11), pages 1-12, June.

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