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    Study on performance enhancement of anaerobic digestion of municipal sewage sludge

    199908_Yeneneh 2014.pdf (5.671Mb)
    Access Status
    Open access
    Authors
    Yeneneh, Anteneh Mesfin
    Date
    2014
    Supervisor
    Prof. Ming Ang
    Dr Ahmet Kayaalp
    Dr Tushar Kanti Sen
    Type
    Thesis
    Award
    PhD
    
    Metadata
    Show full item record
    Faculty
    Faculty of Science and Engineering, Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/2056
    Collection
    • Curtin Theses
    Abstract

    This research focuses on investigating effects of combined microwave-ultrasonic pretreatment of municipal sewage sludge on anaerobic digester performance. Application of a novel combined microwave-ultrasonic pretreatment on thickened excess activated and mixed sludge significantly improved methane production, volatile solid and COD reduction, digestion kinetics, pathogen removal and dewaterability. Effects of Organic loading rate, sludge retention time and sludge mixing ratio were studied. Microwave and ultrasonic pretreatment conditions and digester operational parameters were optimized using experimental and modelling techniques.

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    • Rheological Properties of Pre-treated Wastewater Treatment Plant Sludge
      Yeneneh, Anteneh Mesfin; Sen, Tushar; Ang, Ha Ming; Kayaalp, A.; Kayaalp, N M. (2014)
      Sewage sludge is categorised under the class of non-Newtonian fluids and it manifests shear thinning behaviour. The flow patterns and rheology of sludge in wastewater treatment plants particularly before and after the ...
    • Effect of Ultrasonic, Microwave and Combined Microwave–Ultrasonic Pretreatment of Municipal Sludge on Anaerobic Digester Performance
      Yeneneh, Anteneh; Chong, Siew; Sen, Tushar; Ang, Ha Ming; Kayaalp, A. (2013)
      Anaerobic digestion is one of the most effective means for the stabilisation of sludge. However, it has a very slow rate-limiting hydrolysis phase which is attributed to the low biodegradability of cell walls and the ...
    • Effect of combined microwave-ultrasonic pretreatment of real mixed sludge on the enhancement of anaerobic digester performance
      Yeneneh, Anteneh; Kayaalp, A.; Sen, Tushar; Ang, Ming (2015)
      The anaerobic biodegradability of combined microwave-ultrasonic pretreated thickened excess activated sludge (PTEAS) mixed with raw primary sludge (PS) was investigated in this study. The pretreatment resulted in the ...
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