Abstract: Aqueous additive comprising, as weight percentages based on the total weight of the additive: water: balance to 100%, 10% to 30% of a hydroxylated carbon-based component chosen among sucrose, fructose, glucose, sorbitol, pentaerythritol and its derivatives, maltose, arabinose, glycerol and its derivatives, and mixtures thereof, PO43? ions in an amount expressed as a weight content of phosphorus pentoxide P2O5 ranging between 15% and 37%, 2% to 15% of NH4+ ions, 1% to 15% of a non-fluorinated surfactant chosen among an anionic surfactant, a non-ionic surfactant and mixtures thereof, 7% at most of a corrosion inhibitor, 7% at most of a stabilizer, 5% at most of a thickening agent, 3% at most of other components.

Abstract: A method and burner for combusting fuels having a heating value of <80 BTU/scf (<2.98 MJ/Nm3) in which the fuel premixed with air is injected into a porous inert media so that the fuel is combusted with the air. Oxygen may be optionally injected into the porous inert media separately from the premixed air/fuel.