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광촉매를 이용한 실내공기오염물질 중 오존제거 특성에 관한 연구
조기철,여현구 동남보건대학 2004 論文集-東南保健大學 Vol.22 No.2
Gas-phase catalytic and photocatalytic decomposition of ozone(O₃) was investigated using pure TiO₂.
조기철,최재구,황경철,이진하 동남보건대학 2003 論文集-東南保健大學 Vol.21 No.2
This study evaluated effects of CO concentration on SO₂ removal efficiency using a continuous moving bed system The result showed that the effluent SO₂ concentration when it reaches equilibrium concentration was not affected by inlet CO concentation.
유전자변형 미세조류의 생태 유출 모니터링 및 위해성평가 연구
조기철,전한철,황현주,홍지원,이대성,한종원 (사)한국해양바이오학회 2019 한국해양바이오학회지 Vol.11 No.2
Over the past few decades, microalgae-based biotechnology conjugated with innovative CRISPR/Cas9-mediated genetic engineering has been attracted much attention for the cost-effective and eco-friendly value-added compounds production. However, the discharge of reproducible living modified organism (LMO) into environmental condition potentially causes serious problem in aquatic environment, and thus it is essential to assess potential environmental risk for human health. Accordingly, in this study, we monitored discharged genetically modified microalgae (GMM) near the research complex which is located in Daejeon, South Korea. After testing samples obtained from 6 points of near streams, several green-colored microalgal colonies were detected under hygromicin-containing agar plate. By identification of selection marker genes, the GMM was not detected from all the samples. For the lab-scale environmental risk assessment of GMM, acute toxicity test using rotifer Brachionus calcyflorus was performed by feeding GMM. After feeding, there was no significant difference in mortality between WT and transformant Chlamydomonas reinhardtii. According to further analysis of horizontal transfer of green fluorescence protein (GFP)-coding gene after 24 h of incubation in synthetic freshwater, we concluded that the GFP-expressed gene not transferred into predator. However, further risk assessments and construction of standard methods including prolonged toxicity test are required for the accurate ecological risk assessment.