Solublization of ammoniacal Nitrogen in landfills under tropical Environment its effect on waste Stabilization and struvite recovery

Abstract

newlineMunicipal Solid Waste MSW contains about 4 protein, a major newlinesource of Nitrogen N which solubilizes as Ammonia N in leachate over a newlinelong period of time Ammonia N can inhibit the anaerobic degradation newlineprocess particularly at higher concentration Regardless of the newlineimportance of nitrogenous emissions and factors that affect its stabilization newlinelandfill studies have largely focused on carbon stabilization and soluble newlineorganic compounds in leachate This study is an investigation of the N newlinesolubilization pattern its effects on waste stabilization and a suitable newlinetreatment system for its recovery Assessment of N solubilization newlinestabilization and transformation mechanisms within different landfill newline operating conditions was done using lysimeter studies newline Young and old landfill conditions were simulated using newlinefresh MSW and partially stabilized MSW mined from open dumpsite For newlineeach substrate one lysimeter was operated as controlled landfill newlinewithout any leachate recirculation and another as bioreactor landfill with leachate recirculation Lysimeters were operated over a period of 1000 days under tropical climatic condition and monitored for waste stability parameters such as substrate settlement nitrogenous compounds in the leachate biogas yield and Specific Oxygen Uptake Rate SOUR of the newlinestabilized waste newline