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영산강 수계의 비점오염원에 관한 연구1 - 토지이용 및 강우를 중심으로 -
차진명(Jin Myeong Cha),신성의(Sung Euy Shin),차규석(Gyu Suk Cha) 한국환경영향평가학회 1999 환경영향평가 Vol.8 No.1
This study was carried out to estimate the runoff loading characteristics of the non-point source pollutions in the Youngsan river basins by the method of land-use types and rainfall. The lysimeter test, rainfall and stream flowmeter measurement were performed to develop the pollutant loading unit discharged from the non-point sources. As the non-point sources, the unit pollutant discharge rates were different from the land-use types such as paddy field, upland, forest, housing site and others. The pollutant loading units classified by land-use types in the Youngsan river basins are as follows : The total BOD loading rate is 15.3 ton/day and the housing site is discharged 50.6%, the total T-N loading rate is 6.0 ton/day and the paddy field and upland is discharged 77.6%, and the total T-P loading rate is 0.39 ton/day and the paddy field and upland is discharged 81.2%. The pollutant loadings by rainfall in the Youngsan river basins are about 7,425 ton/year of BOD, 324 ton/year of T-N and 118 ton/year of T-P, respectively.
Bacillus cereus KJA-118을 이용한 오이 모잘록병의 생물학적 방제
안규남,정우진,채동현,박노동,김태환,김용웅,김영철,차규석,김길용,An, Kyu-Nam,Jung, Woo-Jin,Chae, Dong-Hyun,Park, Ro-Dong,Kim, Tae-Hwan,Kim, Yong-Woong,Kim, Young-Cheol,Cha, Gyu-Suk,Kim, Kil-Yong Korean Society of Soil Science and Fertilizer 2003 한국토양비료학회지 Vol.36 No.4
해안가 토양으로부터 강력한 chitinase 활성을 가진 Bacillus cereus KJA-118이 분리.동정되었다. B. cereus KJA-118은 1% colloidal chitin이 포함된 배지를 pH 6.0으로 조절한 후 $30^{\circ}C$ 에서 4일동안 호기적으로 배양했을 때 가장 높은 chitinase 효소활성을 보였다. 탄소원 (crab shell powder, chitin powder, colloidal chitin, and R. solani 균사)에 따른 chitinase 활성은 R. solani 균사를 사용했을 때 가장 높았다. Glycol chitin 0.01%가 포함된 gel에서 전기영동 후 활성 염색한 결과, B. cereus KJA-118에 의해 생산되는 chitinase는 분자량이 68, 47, 37 KDa인 3개의 isoform이 검출되었다. 액체 배지에서 미리 배양한 B. cereus KJA-118과 R. solani를 다시 혼합 배양했을 때, 곰팡이의 세포벽이 완전히 파괴되었다. R. solan가 감염된 토양에 B. cereus KJA-118의 배양액을 처리했을 때 28.1%의 오이 모잘록병 억제 효과를 확인하였다. A bacterium, KJA-118 showing a strong chitinase activity, was isolated and identified as Bacillus cereus. The strain produced maximum level of chitinase, when grown aerobically at $30^{\circ}C$ for 4 days in basal broth containing 1% colloidal chitin in the initial pH adjusted to 6.0. Among various carbon sources such as crab shell powder, chitin powder, colloidal chitin, and R. solani mycelium, maximum chitinase activity was found in culture broth supplemented with R. solani mycelium. When KJA-118 was incubated with R. solani, the cell wall of the fungus was found to be completely destroyed. SDS-PAGE and active staining results revealed that KJA-118 produced three isoforms of chitinase with molecular weights of 68 kDa, 47 kDa, and 37 kDa. When the suspension of KJA-118 was treated to cucumber seedlings, reducing rate of damping-off caused by R. solani was about 28.1%.
안호근 ( Ho-geun Ahn ),조주식 ( Ju-sik Cho ),강종구 ( Jong-gu Kang ),김홍림 ( Hong-limkim ),차규석 ( Gyu-suk Cha ),손보균 ( Bo-kyoon Sohn ) 한국환경기술학회 2005 한국환경기술학회지 Vol.6 No.3
우리나라 남해안 연안의 양식현장에서 폐기되는 해조류 양식 부산물을 사용하여 액체비료를 제조하고 그 특성을 조사하였다. 실험재료는 다시마, 미역과 톳을 파쇄하거나 건조시켜 사용하고 첨가제로는 알칼리 용액을 사용하였다. 종류별 해조류는 많은 미네랄 성분을 함유하고 있고, 중금속은 검출되지 않았다. 해조류의 용해에는 KOH보다 NaOH 용액이 효율적이었다. NaOH 용액으로 제조한 해조류 용액은 인산용액으로 중화하고 적정한 배율로 희석하였다. 폐 미역의 최적 용해조건은 NaOH 용액에 대한 해조류의 비를 1:1로 하고, 용해온도는 80℃, 용해시간은 12시간정도이었다. 제조한 액체비료에서 중금속은 전혀 발견되지 않았고, 해조류내에 존재하는 오옥신과 사이토키닌과 같은 식물생장 호르몬은 용해과정을 거치더라도 분해되지 않았다. 결과적으로 해조류의 부산물을 NaOH 용액으로 용해하면 액체비료로 사용할 수 있는 특성을 가짐을 확인하였다. In order to reutilize the seaweeds which were spent on the culture field in Korean South coast and in industrial processes, fluid fertilizer was prepared by dissolving the seaweed into alkali solutions. Effective solvent and method for seaweed dissolution and properties of the solutions were studied. Undaria sp., Laminaria sp., and Hizikia fusiforma were used as raw sources of seaweed. The seaweed solutions were prepared by heating an alkali solution containing the seaweed. All seaweeds contained much mineral constituents, did not hazardous metals. Dissolution efficiency was evaluated by pH and viscosity of the solutions. Various seaweeds were well dissolved in alkali solution, especially NaOH solution. Seaweed solution prepared by NaOH solution could be neutralized using a H3PO4 solution to be used to spray for plant growth. In dissolution of spent Undaria sp, optimum ratio of seaweed to NaOH solution, temperature, required time were 1, 80℃, and 12 hours, respectively. Also, the hormones in seaweeds for plant growth such as Auxin and Cytokinin were not destroyed in dissolution process. As a result, it was confirmed that the seaweed concentrate from dissolution with NaOH solution could be utilized as a fluid fertilizer.
김석규,차규석 호남대학교산업기술연구소 2011 산업기술연구논문집 Vol.17 No.2
현재 전국에서 가장 수질이 좋지 못한 영산강을 대상으로 수질개선을 위한 다양한 방법을 검토하고 하천유지용수 확보에 따른 수질개선 효과를 검증하였다. 영산강 하천유지용수 확보를 위해 저수지 증고, 하상여과, 천변저류지 조성, 소규모 댐 건설 등의 방법을 선정하였다. 선정된 방법을 통해 확보된 유지유량에 따른 수질개선 효과를 예측하기 위해 수질모델(QUALKO)을 이용하여 수질의 변화상태를 모의하였다. 그 결과, 하천유지유량 증대가 BOD 3.6mg/L에서 2.5mg/L로 수질개선 효과가 있는 것으로 분석되었다. 주요어: 유지유량, 수질모델, QUALKO A approach based on the water quality model, was presented in this paper, in order to estimate effect of water quality management in Yeongsan River. Effect of water quality study by the increasing instream flow. Method of increasing instream flow was selected construction of washland and small dam, riverbed filtration, reservoir expansion. The results indicated that the instream flow would be effective in water quality improvement. It was suggested that the presented approach could be an useful tool to estimate effect of a water quality management policy. Key words: Instream Flow, Water Quality Model, QUALKO
확산 안개상자 내에서 일어나는 n-Nonane의 동질적 핵 형성에 관한 연구
차규석 광주대학교 산업기술연구소 1995 産業技術硏究 Vol.5 No.-
과 포화된 n-nonane의 핵 형성(nucleation)을 확산안개상자를 이용하여 측정하였다. 이 측정장치는 동질적 핵 형성(2 x 10-3 drops/sec 이상)을 관찰할 수 있는 문헌들의 자료를 참작하여 설비하였으며 또한 mass flux를 구별하여 측정할 수 있도록 하였다. n-nonane의 측정은 bottom temperature 300K-400K 사이에서 측정하였다. 확산과 응축진행은 bottom temperature와 증기의 과 포화에 상당히 의존하였다. 본 측정결과는 동질적 핵 형성에 관한 고전이론과 잘 일치하였다. The nucleation of supersaturated n-nonane was investigated with an improved version of the upward thermal diffusion cloud chamber. The design of the chamber was was modified to meet the experimental criteria required to observe the rate of homogeneous nucleation(down to 2 x 10-3 drops/sec ) to estimate the mass flux. Measurements were made on n-nonane, with the bottom temperature of 300K-400K. The diffusion and condensation processes were strongly dependent on the bottom temperature and on the supersaturation of the vapor. The experimental results obtained were compared with the predictions of the classical theory of homogeneous nucleation and were good agreement with the theory.
차규석 광주대학교 1997 産業技術硏究 Vol.8 No.-
영산강 유역의 농경지 및 골프장에서 농약의 영향을 평가하는 기초자료를 얻기위하여 농약 유출 특성을 조사하였다. 경지 면적당 농약 오염부하량은 매년 조금씩 감소하고 있다. 농약 특성을 조사하기 위하여 고체상 추출법을 사용하여 농약을 농축한 후 ethyl acetate로 용리하여 분석한 결과 농경지의 논, 밭에서는 Aldrin, Diazinon과 Dieldrin 성분이 유출되는 것으로 확인되었다. 과수원과 비닐하우스에서는 BHC, PCMB, Aldrin 및 Dieldrin이 많이 유출되는 것으로 나타났다. 골프장에서의 농약유출 특성은 평균 Chlorpyrifos가 0.003ppm, Fenitrothion이 0.0015ppm이 검출되었다. In order to investigate the characteristic of pesticide discharge from farmlands and golf links in the Youngsan river basin, the distribution of a number of pesticides were studied. Annual pollutant loading per unit agricultural area decreased gradually from the use of a land. The pesticides were concentrated with SPE column method and eluted with ethyl acetate. The pesticides contained in the farmland discharges were identified as Aldrin, Diazinon or Dieldrin in the paddy field and dry field; BHC, PCMB, Aldrin or Dieldrin in the orchard and vinylhouse; while those in the golf links were detected as containing Chlorpyrifos in 0.003 ppm and Fenitrothion in 0.0015 ppm.