中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
The Effects of Physicochemical Factors and Cell Density on Nitrite Transformation in a Lipid-Rich Chlorella

文献类型:期刊论文

作者Liang, Fang1,2; Du, Kui2,3; Wen, Xiaobin2; Luo, Liming2; Geng, Yahong2; Li, Yeguang2
刊名JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
出版日期2015-12-01
卷号25期号:12页码:2116-2124
关键词Chlorella NOX nitrite transformation flue gas
ISSN号1017-7825
DOI10.4014/jmb.1505.05102
英文摘要To understand the effects of physicochemical factors on nitrite transformation by microalgae, a lipid-rich Chlorella with high nitrite tolerance was cultured with 8 mmol/l sodium nitrite as sole nitrogen source under different conditions. The results showed that nitrite transformation was mainly dependent on the metabolic activities of algal cells rather than oxidation of nitrite by dissolved oxygen. Light intensity, temperature, pH, NaHCO3 concentrations, and initial cell densities had significant effects on the rate of nitrite transformation. Single-factor experiments revealed that the optimum conditions for nitrite transformation were light intensity: 300 mu mol/m(2)/s; temperature: 30 degrees C; pH: 7-8; NaHCO3 concentration: 2.0 g/l; and initial cell density: 0.15 g/l; and the highest nitrite transformation rate of 1.36 mmol/l/d was achieved. There was a positive correlation between nitrite transformation rate and the growth of Chlorella. The relationship between nitrite transformation rate (mg/l/d) and biomass productivity (g/l/d) could be described by the regression equation y = 61.3x (R-2 = 0.9665), meaning that 61.3 mg N element was assimilated by 1.0 g dry biomass on average, which indicated that the nitrite transformation is a process of consuming nitrite as nitrogen source by Chlorella. The results demonstrated that the Chlorella suspension was able to assimilate nitrite efficiently, which implied the feasibility of using flue gas for mass production of Chlorella without preliminary removal of NOX.
资助项目National Natural Foundation of China[CNSF31272680] ; Ministry of Science and Technology of China[2012FY112900] ; Ministry of Science and Technology of China[2013AA065805]
WOS研究方向Biotechnology & Applied Microbiology ; Microbiology
语种英语
WOS记录号WOS:000368425500019
出版者KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY
源URL[http://202.127.146.157/handle/2RYDP1HH/165]  
专题中国科学院武汉植物园
通讯作者Li, Yeguang
作者单位1.Zhengzhou Normal Univ, Inst Bioengn, Zhengzhou 450044, Peoples R China
2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan 430074, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Liang, Fang,Du, Kui,Wen, Xiaobin,et al. The Effects of Physicochemical Factors and Cell Density on Nitrite Transformation in a Lipid-Rich Chlorella[J]. JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY,2015,25(12):2116-2124.
APA Liang, Fang,Du, Kui,Wen, Xiaobin,Luo, Liming,Geng, Yahong,&Li, Yeguang.(2015).The Effects of Physicochemical Factors and Cell Density on Nitrite Transformation in a Lipid-Rich Chlorella.JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY,25(12),2116-2124.
MLA Liang, Fang,et al."The Effects of Physicochemical Factors and Cell Density on Nitrite Transformation in a Lipid-Rich Chlorella".JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY 25.12(2015):2116-2124.

入库方式: OAI收割

来源:武汉植物园

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