Production of Activated Char and Producer Gas Sewage Sludge

摘要: According to the depletion of fossil fuel and global warming, energy conversion technology for waste has been considered as value added alternative source. Among potential that can be converted into energy, sludge continues increased due amount water treatment facilities, resulting from industry development population increase. Most was treated through landfill, incineration, land spreading (Fullana et al, 2003; Inguanzo 2002; Karayildirim 2006). However, landfill requires complete isolation between filling site surrounding area leaching hazardous substance in sludge, limited space site. Utilization compost incurs soil contamination by increasing content heavy metal soil, causes air pollution problem component atmosphere. Incineration benefits effective volume reduction recovery, but insufficient mixing could discharge organic pollutant especially condition low oxygen region. In addition, significant ashes with will created after incineration. As previously described methods, researches on pyrolysis (Dominguez 2006; Fullana 2006) gasification (Dogru Phuphuakrat 2010) have conducted. Pyrolysis/gasification produce gas, oil, char utilized fuel, adsorber feedstock petrochemicals. (excluding cadmium mercury) safely enclosed. It is at lower temperature than incineration so contaminant gas no or less usage air. Moreover, components, such dioxin, are not generated. However utilization producer engine turbine might cause condensation tar. aerosol polymerization reaction clogging cooler, filter element, inlet, etc (Devi el, 2005; Tippayawong & Inthasan, 2010). methods tar component, in-pyrolysis gasifier (IPGT) (TAPG) were suggested. Firstly, IPGT does require additional post-treatment facility removal, further required operating design gasifier. Through these conditions technical advancement, production syngas achievable, cost large scaled complex equipments needed (Bergman Devi 2003).