해양퇴적층에서 적조생물 (Cochlodinium polykrikoides)의 혐기성 분해과정 중 황토가 휘발성 지방산 생성에 미치는 영향
분야
수해양 > 수산생물학
저자
박영태 ( Young Tae Park ) , 이창규 ( Chang Kyu Lee ) , 박태규 ( Tae Gyu Park ) , 이윤 ( Yoon Lee ) , 배헌민 ( Heon Meen Bae )
발행기관
한국수산과학회(구 한국수산학회)
간행물정보
한국수산과학회지 2012년, 제45권 제5호, 472~479페이지(총8페이지)
파일형식
05907410.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    The formation of volatile fatty acids (VFAs) and changes in p1-1, oxidation and reduction potential(Eh) and acid volatile sulfide(AVS) with the addition of yellow clay were investigated using microcosm systems to examine the effects of yellow clay dispersion on the anaerobic decomposition of Cochiodinium polykrikoides in marine sediments. The acetate concentration reached a maximum by day 4 and was 1.2-1.8 fold less in the sample treated with yellow clay compared to the untreated sample (224-270 vs. 333uM), The formate concentration reached a maximum by day 1 and was 1.3-2.8 fold less in the sample treated with yellow clay compared to the untreated sample (202-439 vs. 563uM). The propionate concentration reached a maximum by day 2 and was 1.5-1.8 fold less in the sample treated with yellow clay compared to the untreated sample (32.6 vs. 57.2uM), After the amounts of acetate, formate and propionate peaked the levels dropped dramatically due to the utilization by sulfate reducing bacteria. The Eh of the samples treated with yellow clay was similar to the untreated sample on day 0 but was higher in the sample treated with yellow clay (l40-206 mV) from days 4 to 17. AVS started to form on day 3 and this was sustained until day 6, and 1.2-2.2 Cold less was produced in the sample treated with yellow clay compared to the untreated sample (40.2-69.3 vs. 83.2-93.8 mg/L). Accordingly, during the anaerobic decomposition of C. polvkrikoides in marine sediments, yellow clay dispersal seems to suppress the reduction state of Eh and the formation of volatile fatty acids (acetate, formate and propionate) used as an energy source by sulfate reducing bacteria, indicating that this process controls the production of hydrogen sulfide that negatively affects marine organisms and the marine sediment environment.
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