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Influence of Pyrolysis Temperature on Product Distribution and Characteristics of Anaerobic Sludge

Author

Listed:
  • Muhammad Usman Hanif

    (Institute of Environmental Science and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology, Sector H-12, Islamabad 44000, Pakistan)

  • Mohammed Zwawi

    (Department of Mechanical Engineering, King Abdul Aziz University, Rabigh 21911, Saudi Arabia)

  • Sergio C. Capareda

    (Bio-Energy Testing and Analysis Laboratory (BETA Lab), Biological and Agricultural Engineering Department, Texas A&M University, College Station, TX 77843, USA)

  • Hamid Iqbal

    (Rawalpindi Waste Management Company, A-81, Iran Road, Satellite Town, Rawalpindi 46000, Pakistan)

  • Mohammed Algarni

    (Department of Mechanical Engineering, King Abdul Aziz University, Rabigh 21911, Saudi Arabia)

  • Bassem F. Felemban

    (Mechanical Engineering Department, Taif University, Taif 21974, Saudia Arabia)

  • Ali Bahadar

    (Department of Chemical and Materials Engineering, King Abdul Aziz University, Rabigh 21911, Saudi Arabia)

  • Adeel Waqas

    (Center for Advanced Studies in Energy, National University of Sciences and Technology, Islamabad 44000, Pakistan)

Abstract

Pyrolysis of anaerobically digested sludge can serve as an efficient biomass for biofuel production. Pyrolysis produces products like char, bio-oil, and combustible gases by thermochemical conversion process. It can be used for sludge treatment that decreases sludge disposal problems. Sludge produced from anaerobic co-digestion (microalgae, cow dung, and paper) waste has high carbon and hydrogen content. We investigated the candidacy of the anaerobic sludge having high heating value (HHV) of 20.53 MJ/kg as a reliable biomass for biofuels production. The process of pyrolysis was optimized with different temperatures (400, 500, and 600 °C) to produce high quantity and improved quality of the products, mainly bio-oil, char, and gas. The results revealed that with the increase in pyrolysis temperature the quantity of char decreased (81% to 55%), bio-oil increased (3% to 7%), and gas increased (2% to 5%). The HHV of char (19.2 MJ/kg), bio-oil (28.1 MJ/kg), and gas (18.1 MJ/kg) were predominantly affected by the amount of fixed carbon, hydrocarbons, and volatile substance, respectively. The study confirmed that the anaerobic sludge is a promising biomass for biofuel production and pyrolysis is an efficient method for its safe disposal.

Suggested Citation

  • Muhammad Usman Hanif & Mohammed Zwawi & Sergio C. Capareda & Hamid Iqbal & Mohammed Algarni & Bassem F. Felemban & Ali Bahadar & Adeel Waqas, 2019. "Influence of Pyrolysis Temperature on Product Distribution and Characteristics of Anaerobic Sludge," Energies, MDPI, vol. 13(1), pages 1-12, December.
    • Handle: RePEc:gam:jeners:v:13:y:2019:i:1:p:79-:d:301017
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    References listed on IDEAS

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    1. Kan, Tao & Strezov, Vladimir & Evans, Tim J., 2016. "Lignocellulosic biomass pyrolysis: A review of product properties and effects of pyrolysis parameters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 57(C), pages 1126-1140.
    2. Haykiri-Acma, H. & Yaman, S. & Kucukbayrak, S., 2006. "Effect of heating rate on the pyrolysis yields of rapeseed," Renewable Energy, Elsevier, vol. 31(6), pages 803-810.
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    1. Muhammad Usman Hanif & Mohammed Zwawi & Mohammed Algarni & Ali Bahadar & Hamid Iqbal & Sergio C. Capareda & Muhammad Adnan Hanif & Adeel Waqas & Nazia Hossain & Muhammad Tahir Hussain Siddiqui & Sabzo, 2022. "The Effects of Using Pretreated Cotton Gin Trash on the Production of Biogas from Anaerobic Co-Digestion with Cow Manure and Sludge," Energies, MDPI, vol. 15(2), pages 1-12, January.

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