RT Journal Article ID 4064f9d9269cfbcf A1 Lopes, M. Helena A1 Abelha, P. A1 Cabrita, Isabel A1 Oliveira, J. F. Santos A1 Gulyurtlu, I. T1 ENVIRONMENTAL EVALUATION OF SEWAGE SLUDGE CO-COMBUSTION IN A PILOT FLUIDIZED BED COMBUSTOR JF International Journal of Energy for a Clean Environment JO IJECE YR 2006 FD 2007-03-23 VO 7 IS 3 SP 269 OP 284 AB Co-combustion of coal with sludge did not result in greater NOx, SO2, HCl, and CO emissions. Sludge raised heavy metals emitted, especially Cd, Pb, and Hg, mostly associated with particles greater than 1 μm. Metals were retained in bed ashes and in the cyclones and most of the Hg was adsorbed in fly ashes. The leachability of metals and organic matter decreased with combustion. Results of acid neutralization capacity showed that ashes became more resistant to acidification than the parent sludge. Globally, this study shows that combustion of sludge can reduce environmental impact compared with the traditional direct use of sludge in soils. PB Begell House LK https://www.dl.begellhouse.com/journals/6d18a859536a7b02,4a467dbf7cf032fb,4064f9d9269cfbcf.html