| 초록 |
According to the IMO (international maritime organization) policy, every ship entering the Baltic has to equip the gas cleaning scrubber. Although various advanced de-SOx/de-NOx devices have been proposed, recovery of waste scrubbing liquid is of critical interests in a limited space of the ship. This waste solution contains many types of salts, this work attempts to recover some valuable materials before disposal. Some typical processes including thermal evaluation, low temperature extraction method and a selective organic solvent extraction method were experimentally evaluated. It primarily aims for extraction of ammonium sulfates and nitrates. Extraction yield was found 82.7% by heating evaporation. The obtained material was analyzed in its chemical and physical properties using TGA, FT-IR, EA and SEM-EDX. |
