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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.6
- 수록면
- 254 - 262 (9page)
이용수
초록· 키워드
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The impact of free cyanide (CN⁻) and thiocyanate (SCN⁻) on the CN⁻ (CDO) and SCN⁻ degraders (TDO) to nitrify and denitrify aerobically was evaluated under alkaline conditions. The CDO’s were able to nitrify under cyanogenic conditions, achieving NH₄⁺-N removal rates above 1.66 mg NH₄⁺-N.L<SUP>-1</SUP>.h<SUP>-1</SUP>, except when CN⁻ and SCN⁻ loading was 15 mg CN⁻/L and 50 mg SCN⁻.L<SUP>-1</SUP>, respectively, which slightly inhibited nitrification. The TDO’s were able to achieve a nitrification rate of 1.59 mg NH₄⁺-N.L<SUP>-1</SUP>.h<SUP>-1</SUP> in the absence of both CN⁻ and SCN⁻, while the presence of CN⁻ and SCN⁻ was inhibitory, with a nitrification rates of 1.14 mg NH₄⁺-N.L<SUP>-1</SUP>.h<SUP>-1</SUP>. The CDO’s and TDO’s were able to denitrify aerobically, with the CDO’s obtaining NO₃⁻-N removal rates above 0.67 mg NO₃⁻-N.L<SUP>-1</SUP>.h<SUP>-1</SUP>, irrespective of the tested CN⁻ and SCN⁻ concentration range. Denitrification by the TDO’s was inhibited by CN⁻, achieving a removal rate of 0.46 mg NO₃⁻-N.L<SUP>-1</SUP>.h<SUP>-1</SUP> and 0.22 mg NO₃⁻-N.L<SUP>-1</SUP>.h<SUP>-1</SUP> when CNconcentration was 10 and 15 mg CN⁻.L<SUP>-1</SUP>, respectively. However, when the CDO’s and TDO’s were co-cultured, the nitrification and aerobic denitrification removal rates were 1.78 mg NH₄⁺-N.L<SUP>-1</SUP>.h<SUP>-1</SUP> and 0.63 mg NO₃⁻-N.L<SUP>-1</SUP>.h<SUP>-1</SUP> irrespective of CN⁻ and SCN⁻ concentrations.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (34)
참고문헌 신청
Johnson CA. The fate of cyanide in leach wastes at gold mines: An environmental perspective. Appl. Geochem. 2015;57:194-205.
Yao S, Ni J, Ma T, Li C. Heterotrophic nitrification and aerobic denitrification at low temperature by a newly isolated bacterium, Acinetobacter sp. HA2. Bioresour. Technol. 2013;139:80-86.
Joo HS, Hirai M, Shoda M. Characteristics of ammonium re moval by heterotrophic nitrification-aerobic denitrification by Alcaligenes faecalis No. 4. J. Biosci. Bioeng. 2005;100:184-191.
Chen Q, Ni J. Heterotrophic nitrification ? Aerobic denitrification by novel isolated bacteria. J. Ind. Microbiol. Biotechnol. 2011;38:1305-1310.
Zhang QL, Liu Y, Ai GM, Miao LL, Zheng HY, Liu ZP. The characteristics of a novel heterotrophic nitrification ? Aerobic denitrification bacterium, Bacillus methylotrophicus strain L7. Bioresour. Technol. 2012;108:35-44.
Yao S, Ni J, Ma T, Li C. Heterotrophic nitrification and aerobic denitrification at low temperature by a newly isolated bacterium, Acinetobacter sp. HA2. Bioresour. Technol. 2013;139:80-86.
Joo HS, Hirai M, Shoda M. Characteristics of ammonium re moval by heterotrophic nitrification-aerobic denitrification by Alcaligenes faecalis No. 4. J. Biosci. Bioeng. 2005;100:184-191.
Chen Q, Ni J. Heterotrophic nitrification ? Aerobic denitrification by novel isolated bacteria. J. Ind. Microbiol. Biotechnol. 2011;38:1305-1310.
Zhang QL, Liu Y, Ai GM, Miao LL, Zheng HY, Liu ZP. The characteristics of a novel heterotrophic nitrification ? Aerobic denitrification bacterium, Bacillus methylotrophicus strain L7. Bioresour. Technol. 2012;108:35-44.
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UCI(KEPA) : I410-ECN-0101-2019-539-000342702