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Nonconventional treatment of sewage sludge using cement kiln dust for reuse and catalytic conversion of hydrocarbons

Author

Listed:
  • M. Hamdy El-Awady

    (National Research Centre)

  • Suzan A. Ali

    (Ain Shams University)

Abstract

Sewage sludge represents a critical environmental issue in Egypt. Large quantities of CKD are emitted from cement factories. It has negative impacts on humans, animals, plants, lands, water, and all remaining environment. It causes serious problems on the national level. Besides using CKD for sludge treatment and reuse as soil conditioner, a new scenario is to use it as catalytic convertor of some hydrocarbons. Results showed that CKD is used to separate the organic matters and suspended solids, reduce the organic micropollutants, scavenge heavy metals, and destruct viruses, parasites, and all pathogenic bacteria. The dehydrogenation of isopropanol to acetone and alcohol condensation of the produced acetone to give methyl isobutyl ketone over different catalyst samples was studied using a flow technique under normal pressure. Results revealed that treatment of raw sludge led to an increase in catalytic activity toward acetone formation by 50 % at 400 °C. A treatment system was proposed for continuous operation.

Suggested Citation

  • M. Hamdy El-Awady & Suzan A. Ali, 2012. "Nonconventional treatment of sewage sludge using cement kiln dust for reuse and catalytic conversion of hydrocarbons," Environment Systems and Decisions, Springer, vol. 32(4), pages 464-475, December.
    • Handle: RePEc:spr:envsyd:v:32:y:2012:i:4:d:10.1007_s10669-012-9411-8
    DOI: 10.1007/s10669-012-9411-8
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