Wet Oxidation of Crude Manure and Manure Fibers: Substrate Characteristics Influencing the Pretreatment Efficiency for Increasing the Biogas Yield of Manure

Hinrich Uellendahl, Zuzana Mladenovska, Birgitte Kiær Ahring

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    The biogas yield of manure is typically lower than 25 m3/t due to its low dry matter content and its high ratio of lignocellulosic fibers that are recalcitrant towards anaerobic digestion. A new pre-treatment method – wet oxidation – has been tested for disruption of the lignocellulosic fiber structure with subsequent higher degradation efficiencies and methane yields. A screening of crude manure and the separated fiber fraction shows that wet oxidation is more adequate for treatment of high concentrated solid fraction than for crude manure and an increase of 35% in biogas yield can be gained from wet oxidation of digested fibers. The wet oxidation treatment of the manure fiber fraction has to be carefully adjusted in order to achieve the highest increase in biogas yield for the manure fiber fraction under low production of inhibiting compounds and low losses of valuable organic matter.
    Original languageEnglish
    Title of host publication11th World Congress on Anaerobic Digestion
    Publication date2007
    Publication statusPublished - 2007
    Event11th IWA World Congress on Anaerobic Digestion: Bio-energy for our Future - Brisbane, Australia
    Duration: 23 Sep 200727 Sep 2007
    Conference number: 11
    http://www.awmc.uq.edu.au/ad11/

    Conference

    Conference11th IWA World Congress on Anaerobic Digestion
    Number11
    CountryAustralia
    CityBrisbane
    Period23/09/200727/09/2007
    Internet address

    Cite this

    Uellendahl, H., Mladenovska, Z., & Ahring, B. K. (2007). Wet Oxidation of Crude Manure and Manure Fibers: Substrate Characteristics Influencing the Pretreatment Efficiency for Increasing the Biogas Yield of Manure. In 11th World Congress on Anaerobic Digestion