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김연재,주준걸,조성기,오광중,이문호,김동욱 한국공업화학회 2003 응용화학 Vol.7 No.2
To find microorganisms to degrade 7 kinds of polycarbonates prepared from waste carbon dioxide, U1 microbial consortium were discovered from Ulsook waste landfill in Busan, where degradation rate of PPC-PVL and PVL were 1.6*10 EXP (2) PPC-PVL/(day L) and 3.4*10 EXP (-2) g PVL/(day L), respectively. Y1 microorganisms from waste sewage treatment in Busan degraded PPC-PVL and PPC, where degradation rate of PPC-PVL and PPC were 1.9*10 EXP (-2) g PPC-PVL/(day L) and 5.5 *10 EXP (-3) g PPC/(day L), respectively.
김연재,주준걸,조성기,김동욱 한국공업화학회 2003 응용화학 Vol.7 No.2
To increase adsorption capacity of hydrogen sulfide and ammonia, H₂SO₄, H₃PO₄ and KI were impregnated to activated carbons. KI impregnated activated carbon showed highest adsorption capacity for hydrogen sulfide, and H₂SO₄ impregnated activated carbon appears to be an appropriate choice for the adsorbent because concentration of ammonia was higher than that of hydrogen sulfide in most food waste composting process.
김연재,박진수,주준걸,김동욱 한국공업화학회 2003 응용화학 Vol.7 No.1
The hydrogen sulfide and the ammonia are generated in large amount at leather processing plant, sanitary station and waste water treatment. Among various odor removal techniques, the adsorption has an advantage in removing non-continuous, high concentration gases. To increase the removal efficiency at low cost, the activated carbon was impregnated with KCl, NaOH, KI to remove hydrogen sulfide, and it eas impregnated with HNO_3 H_2SO_4 to remove ammonia. Activated carbon with efficiency after 4 cycles of regeneration. Activated carbon with H_2SO_4 showed higher removal efficiency of ammonia among solution test, however, it was not satisfactory.