Determination of kinetics for co-composting of organic fraction of municipal solid waste with Palm Oil Mill Sludge (POMS)

Saleh Ali Tweib, RakmiAbd Rahman, Mohd Sahaid Khalil

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Solid waste generated in Malaysia constitutes of large portion of organic material that can be readily composted. Composting which dispose of the organic material, and at the same time producing usable compost as the end product is thought to be a good option for organic wastes disposal. A reactor is chosen to be utilised in this study since it is economical and is a simpler alternative compared to other existing composting systems. Co-composting of palm oil mill sludge (POMS) and solid waste (SW) can be regarded as an environmental-friendly approach if compared to the current method whereby wastes are disposed in landfills. The compost starter was estimated based on its efficiency. The objectives were to investigate the appropriate 1:2 SWK to POMS mixing ration compost maturity and quality. The potential of the composting process is then found by using the proposed substrate and the possible usages of the compost for agricultural activities. Besides that, the physicochemical changes that occurred during the entire process of composting palm oil mill sludge together with solid waste were also studied. The pH value also decreased along the process and the final pH recorded was 7.28. Percentage of moisture content reduced from 64 to 55.32during the process. The highest temperature achieved was about 34.23°C, and eventually dropped to 20°C in the stages which followed. The model resulted in an experimental exponential equation. It also enable the formulation of another linear equation there from, that eventually give in the value of K1 and K2 (whereby K1 is the process constant and K2 is the process variable of a compo sting system). The model produced has a mathematical expression of y = 87.867 X-0.251 with R-square value of 0.943, and gave in the value of K1 and K2 81.64 and 1.0301. The results showed that the model is capable of describing the actual status of the kinetics composting.

    Original languageEnglish
    Pages (from-to)136-147
    Number of pages12
    JournalJournal of Solid Waste Technology and Management
    Volume40
    Issue number2
    DOIs
    Publication statusPublished - 1 May 2014

    Fingerprint

    composting
    municipal solid waste
    mill
    sludge
    kinetics
    compost
    oil
    solid waste
    waste disposal
    landfill
    moisture content
    substrate

    Keywords

    • Composting kinetics
    • Michaelis-Menten model

    ASJC Scopus subject areas

    • Waste Management and Disposal

    Cite this

    Determination of kinetics for co-composting of organic fraction of municipal solid waste with Palm Oil Mill Sludge (POMS). / Tweib, Saleh Ali; Rahman, RakmiAbd; Khalil, Mohd Sahaid.

    In: Journal of Solid Waste Technology and Management, Vol. 40, No. 2, 01.05.2014, p. 136-147.

    Research output: Contribution to journalArticle

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