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  • Title: Evaluation of continuous mesophilic anaerobic sludge digestion after high temperature microwave pretreatment.
    Author: Toreci I, Kennedy KJ, Droste RL.
    Journal: Water Res; 2009 Mar; 43(5):1273-84. PubMed ID: 19157485.
    Abstract:
    Effect of microwave pretreatment (MW) high temperature (175 degrees C) and MW intensity to waste activated sludge digested with acclimatized inoculum in single- and dual-stage semi-continuous mesophilic anaerobic digesters at different sludge retention times (SRTs) (20, 10 and 5 days) were investigated. MW pretreatment led to similar sludge stabilization at low SRTs (5 and 10 days). Although lowering MW intensity slightly improved sludge solubilization, it had a negative effect on digestion at low SRTs. Single-stage digesters with MW pretreatment surpass dual-stage digesters performances.
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