Bae, Hyokwan Paul, Tanusree Kim, Daeik Jung, Jin-Young 2024-01-20T03:02:13Z 2024-01-20T03:02:13Z 2021-09-05 2016-11 1866-6280 https://pubs.kist.re.kr/handle/201004/123479 A sequencing batch reactor (SBR) is a suitable system for evaluating an anaerobic ammonium oxidation (ANAMMOX) process. Response surface analysis was employed to optimize the specific ANAMMOX activity (SAA) and evaluate its technical features in a SBR with a range of total nitrogen (TN) concentration as NH4+-N and NO2--N at 1: 1 ratio and an appropriate pH. A partial cubic model adequately fit the response surface with high statistical significance. SAA was optimized at 1.77 mg-N/mg-VSS day with 155.9 mg-N/L TN concentration and pH at 7.34. The inhibition factors of free ammonia, free nitrous acid (FNA), and nitrite gave specific rise to the SAA responses of over 1.4 mg-N/mg-VSS day in square-like boundaries. However, the toxic effect of 2.4 mg-N/L of FNA was identified to induce a drastic decrease at the lowest pH of 5.6. For the most optimized fed-batch mode for ANAMMOX-SBRs, this study found that TN was 100-200 mg/L and pH was 6.5-8, which can become controlling factors for physicochemical reactions at the time of substrate feeding and microbial reacting stages. English SPRINGER ANAEROBIC AMMONIUM OXIDATION AUTOTROPHIC NITROGEN REMOVAL MICROBIAL COMMUNITY STRUCTURE START-UP OXIDIZING MICROORGANISMS LOW-TEMPERATURE WASTE-WATER SBR ENRICHMENT PERFORMANCE Specific ANAMMOX activity (SAA) in a sequencing batch reactor: optimization test with statistical comparison Article 10.1007/s12665-016-6252-7 1 ENVIRONMENTAL EARTH SCIENCES, v.75, no.22 ENVIRONMENTAL EARTH SCIENCES 75 22 scie scopus 000388601200026 2-s2.0-84995780097 Environmental Sciences Geosciences, Multidisciplinary Water Resources Environmental Sciences & Ecology Geology Water Resources Article ANAEROBIC AMMONIUM OXIDATION AUTOTROPHIC NITROGEN REMOVAL MICROBIAL COMMUNITY STRUCTURE START-UP OXIDIZING MICROORGANISMS LOW-TEMPERATURE WASTE-WATER SBR ENRICHMENT PERFORMANCE ANAMMOX Response surface analysis (FSA) Sequencing batch reactor (SBR) Free ammonia (FA) Free nitrous acid (FNA) Fed-batch strategy