Bae, Hyokwan Yang, Heejeong Chung, Yun-Chul Yoo, Young Je Lee, Seockheon 2024-01-20T09:34:16Z 2024-01-20T09:34:16Z 2021-09-04 2014-06 1615-7591 https://pubs.kist.re.kr/handle/201004/126755 Poly(vinyl alcohol) (PVA) has been utilized as a support material for the immobilization of nitrifying bacteria without the comprehensive survey of partial nitritation. In the present study, the activities of nitrifiers and the maximum nitrogen conversion rate of partial nitritation with PVA sponge-cubes were specified according to different conditions. The selective enrichment of ammonia-oxidizing bacteria (AOB) on PVA sponge-cubes was achieved by the competition between AOB and nitrite-oxidizing bacteria for dissolved oxygen. The efficiency of ammonia oxidation was proportional to the concentration of HCO3 (-) with the molar ratio of HCO3 (-)-C/NH4 (+)-N = 1.91 and a half of the ratio was applied to the further experiments to ensure stable partial nitritation. The maximum nitrogen conversion rate of partial nitritation was dependent on the volume, not the size of sponge-cubes. The partial nitritation showed the superior rate performance of 3.09 kg N/m(3) day with the packing ratio of 32 % of 5 x 5 x 5 mm(3) PVA sponge-cubes. English SPRINGER BIOLOGICAL NITROGEN REMOVAL SEQUENCING BATCH REACTOR WASTE-WATER PARTIAL NITRIFICATION ANAMMOX PROCESS HIGH-STRENGTH BACTERIA DENITRIFICATION MICROORGANISMS CUBES High-rate partial nitritation using porous poly(vinyl alcohol) sponge Article 10.1007/s00449-013-1083-3 1 BIOPROCESS AND BIOSYSTEMS ENGINEERING, v.37, no.6, pp.1115 - 1125 BIOPROCESS AND BIOSYSTEMS ENGINEERING 37 6 1115 1125 scie scopus 000335666100014 2-s2.0-84905717183 Biotechnology & Applied Microbiology Engineering, Chemical Biotechnology & Applied Microbiology Engineering Article BIOLOGICAL NITROGEN REMOVAL SEQUENCING BATCH REACTOR WASTE-WATER PARTIAL NITRIFICATION ANAMMOX PROCESS HIGH-STRENGTH BACTERIA DENITRIFICATION MICROORGANISMS CUBES Partial nitritation Inorganic carbon Moving bed biofilm reactor Packing ratio PVA sponge-cube