American Journal of Chemical Engineering

Volume 2, Issue 3, May 2014

  • Modeling and Analysis of Biogas Generation Rate Sensitivity to Initial-pH, Leachate-Level and Ash-Loading during Anaerobic Biodegradation of Organic Solid Waste

    William Wanasolo, Samwel Manyele, John Makunza

    Issue: Volume 2, Issue 3, May 2014
    Pages: 21-27
    Received: 10 May 2014
    Accepted: 3 June 2014
    Published: 20 June 2014
    DOI: 10.11648/j.ajche.20140203.11
    Abstract: Anaerobic biodegradation of solid waste food-residues mixed with fruit-waste was carried out at mesophilic conditions. The goal was to model the sensitivity of biogas generation rate to initial-pH, leachate-level and ash-loading. Two process parameters were analyzed at centre-points while the third factor was set at low-, mid- and high-levels. The ... Show More
  • Solid State Fermentation Process for Polygalacturonase Production Using Cashew Apple

    Siumara R. Alcântara, Flávio L. H. da Silva

    Issue: Volume 2, Issue 3, May 2014
    Pages: 28-34
    Received: 21 July 2014
    Accepted: 30 July 2014
    Published: 10 August 2014
    DOI: 10.11648/j.ajche.20140203.12
    Abstract: The aim of this work was the optimization of solid state fermentation for polygalacturonases production using cashew apple dry bagasse as substrate and Aspergillus niger CCT0916. For this, it was observed the influence of moisture content, spore concentration, ammonium sulfate concentration and fermentation temperature on polygalacturonase activity... Show More