http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
양어장수내의 암모니아성 질소제거를 위한 질화세균군의 고정화
김성구(Sung Koo Kim),서재관(Jae Koan Seo),이종석(Jong Seok Lee),공인수(In Soo Kong),서근학(Kuen hack Suh) 한국수산과학회 1997 한국수산과학회지 Vol.30 No.5
The immobilization of a microorganism has been rapidly progressed with the development of biotechnology in recent years. Although it has been used as a tool to isolate products from biological media in various areas, it has not yet been practiced in the treatment of waste water. In this paper, we suggest a possibility to apply the immobilization technique in the recirculating aquaculture system. We examined the ability of NH₄^+ removal by nitrifier consortium immobilized in Ba^(++)-alginate, κ-carrageenan and agar bead at the concentration of 50g/L, respectively. In order to use the immobilized nitrifier consortium as media in the fludized bed reactor, the strength of bead was measured. Ba^(++)-alginate as a support material showed higher strength of bead. Also, the nitrifier consortium immobilized in Ba^(++)-alginate showed higher nitrification activity that could remove 20㎎/L ammonium ion than those immobilized in other two support materials, carrageenan and agar. The immobilized nitrifier consortium showed better nitrification activity than free nitrifier consortium.
허현철(Hyun Chul Hur),서재관(Jae Koan Seo),박은주(Eun Ju Park),김성구(Sung Koo Kim) 한국수산과학회 1999 한국수산과학회지 Vol.32 No.2
Experiments were conducted to evaluate a experimental model developed for the protein removal by foam separation. The foam separator was operated in well-mixed tank which would be considered as a completely mixed condition. The feasibility of foam separation to remove protein from sea water was investigated. Protein removal characteristics of the foam separator were obtained by batch experiments. To find the effect of the operating parameter to protein removal rate, the foam separation was carried with variation of initial protein concentration and superficial air velocity. The result indicated that the protein removal efficiency was increased with increasing protein concentration and superficial air velo챠ty. The relationship between operation parameters and protein removal rate were evaluated by non-linear regression as the form of exponential function. Using both relationships, the simplified model was determined. The simplified foam separator operation model was verified by the batch operation. The simulation results showed a good relationship with the experimental data.
서재관,김성구 한국생명과학회 1998 한국생명과학회 학술발표회 Vol.20 No.-
The immobilization of nitrifier consortium was carried out for the application to recirculating aquaculture system(RAS). The abilities of NH₄^+-N removal by immobilized nitrifier consortia prepared with boric acid treated, ethanol treated, and freezing-thawing treated PVA beads at the concentration of 15% were examined. To identify the possibility of applying the beads in the fluidized bed reactor, characteristics of beads were evaluated. The suitable bead was boric acid treated beads which had highest ammonia removal rate of 16.09 g/㎥/day. It took 12 days for nitrifier consortium immobilized beads to be stable for the removal of NH₄^+-N. Life spans of the beads were more than three months with aggressive aeration in the fluidized bed reactor when nitrifier consortia immobilized in PVA beads were used. In order to apply the nitrifier consortium immobilized beads to aquaculture facility, the continuous reactor was used for 49 days with synthetic aquacultural water containing 2 ㎎/L ammonia. The highest ammonia removal rate of 31.87 g/㎥/day was observed when HRT was 0.6 hour(36min.).
PVA 에 고정화된 질화세균에 의한 암모니아성 질소제거
서근학,김용하,조진구,김병진,서재관,박은주,김성구 한국환경과학회 1999 한국환경과학회지 Vol.8 No.4
Nitrifier consortium immobilized in polyvinyl alcohol was used for the removal of ammonia nitrogen from synthetic aquaculture water in the airlift bioreactor. At the aeration rate of 0.15 vvm and bead packing volume fraction of 20%, airlift bioreactor was operated effectively for a removal of ammonia nitrogen and for a stability of operation. Ammonia nitrogen removal rate by airlift bioreactor was continuously increased with decreasing hydraulic residence time. At the HRT(hydraulic residence time) of 0.3 hour, ammonia nitrogen removal rate was 84.3 g/㎥·d and the highest ammonia nitrogen removal rate was 130.8 g/㎥·d when HRT was 0.1 hour.