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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2000.8
- 수록면
- 1,651 - 1,659 (9page)
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초록· 키워드
To study the physiological characteristics of autotrophic denitrifying sulfur bacteria, steady-state anaerobic master culture reactor (MCR) was operated over six months under a semi-continuous mode and nitrate limiting conditions using the medium containing thiosulfate and nitrate with nutrient/mineral/buffer (NMB). Characteristics of autotrophic denitrifier were investigated through the cumulative gas production volume and rate, measured using microbial respirometer, and through the nitrate, nitrite, and sulfate concentrations in serum bottles. Inhibition of denitrification began when the concentration of NO₃⁻-N, and SO₄²⁻ reached about 666 mg/L and 2,000 mg/L, respectively. Autotrophic denitrifying sulfur bacteria was observed to be very sensitive to nitrite but relatively tolerant of nitrate, sulfate, and thiosulfate. Under mixotrophic conditions, denitrification by these bacteria occurred autotrophically; even with as high as 2 g COD, autotrophic denitrification was not significantly affected. The optimum pH and temperature for autotrophic denitrification was about 6.5~7.5 and 33~35 °C, respectively. Denitrification was completely inhibited at a pH of 6 and 9 and a temperature of 40 °C.
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참고문헌
참고문헌 신청최근 본 자료
UCI(KEPA) : I410-ECN-0101-2017-539-001524388
