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Recovery of Sewage Sludge in the Cement Industry

Author

Listed:
  • Carmen Otilia Rusănescu

    (Department of Biotechnical Systems, Polytehnic University of Bucharest, 060042 Bucharest, Romania)

  • Gheorghe Voicu

    (Department of Biotechnical Systems, Polytehnic University of Bucharest, 060042 Bucharest, Romania)

  • Gigel Paraschiv

    (Department of Biotechnical Systems, Polytehnic University of Bucharest, 060042 Bucharest, Romania)

  • Mihaela Begea

    (Department of Biotechnical Systems, Polytehnic University of Bucharest, 060042 Bucharest, Romania)

  • Larisa Purdea

    (Department of Biotechnical Systems, Polytehnic University of Bucharest, 060042 Bucharest, Romania)

  • Ivona Camelia Petre

    (Faculty of Materials Engineering and Mechanics, Valahia University of Targoviste, 13 Aleea Sinaia Street, 130004 Targoviste, Romania)

  • Elena Valentina Stoian

    (Faculty of Materials Engineering and Mechanics, Valahia University of Targoviste, 13 Aleea Sinaia Street, 130004 Targoviste, Romania)

Abstract

This paper presents an analysis of the literature that studies the possibility of sewage sludge being used in the cement industry to reduce carbon dioxide emissions from cement production and thus solve the problem of disposing of sewage sludge so that it is no longer stored, avoiding soil pollution with heavy metals, and reducing pressure on the environment. The ash of sewage sludge is a good pozzolanic material, because when it is finely ground, it can be used as a partial substitute for Portland cement. This reduces waste storage costs. Sewage sludge ash was mixed with cement, and it was analyzed to determine whether the paste obtained could be used as a raw material in the cement industry. The presented results are on the hydration characteristics of the sewage sludge ash, the compressive strength of the cement determined after different days, the workability of the cement, and the porosity of the cement paste and the ash.

Suggested Citation

  • Carmen Otilia Rusănescu & Gheorghe Voicu & Gigel Paraschiv & Mihaela Begea & Larisa Purdea & Ivona Camelia Petre & Elena Valentina Stoian, 2022. "Recovery of Sewage Sludge in the Cement Industry," Energies, MDPI, vol. 15(7), pages 1-10, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:7:p:2664-:d:787387
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    References listed on IDEAS

    as
    1. Rafiu O. Yusuf & Zainura Zainon Noor & Moh'd Fadhil Moh'd Din & Ahmad H. Abba, 2012. "Use of sewage sludge ash (SSA) in the production of cement and concrete - a review," International Journal of Global Environmental Issues, Inderscience Enterprises Ltd, vol. 12(2/3/4), pages 214-228.
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