您的位置：首页 > 论文页面
异养硝化-好氧反硝化菌Bacillus sp. JB4的异养硝化特性研究
发表时间：2017-08-15 浏览量：1807 下载量：221
| 全部作者： | 李泳洪，陈小岚，许旭萍 |
| 作者单位： | 福建师范大学生命科学学院 |
| 摘 要： | 为进一步探究已筛选并分离纯化出的异养硝化-好氧反硝化菌JB4（Bacillus sp. JB4）的异养硝化活性，采用单因素对照实验，并结合相关分光光度法，分别研究pH值、温度、接种量、转速、碳源、底物浓度和C/N等因素对该株异养硝化-好氧反硝化菌去除氨氮的影响。结果显示该菌株适宜的脱氮条件为：初始氨氮浓度50～75 mg/L，碳源为丁二酸钠，C/N为8，温度35℃，转速180 r/min，接种量3%，pH值为7.0. 在此条件下，12 h内氨氮去除率为76.95%～83.54%，表明菌株JB4具有良好的异养硝化能力。 |
| 关 键 词： | 微生物学；异养硝化；单因素对照；芽孢杆菌；生物脱氮 |
| Title： | Heterotrophic nitrification characteristics of heterotrophic nitrification-aerobic denitrification strain Bacillus sp. JB4 |
| Author： | LI Yonghong, CHEN Xiaolan, XU Xuping |
| Organization： | College of Life Sciences, Fujian Normal University |
| Abstract： | The activity of heterotrophic nitrificationis explored in this study, which has been screened and isolated from the heterotrophic nitrification-aerobic denitrification bacteria JB4 (Bacillus sp. JB4). The effect of pH, temperature, inoculation amount, shaking speed, carbon source, substrate concentration and C/N on the heterotrophic nitrification-aerobic denitrifying bacteria for ammonia nitrogenremoval were researched by using single factor control experiment, combined with spectrophotometry respectively. The results show that the appropriate nitrogen removal conditions are as follows: initial ammonia nitrogen concentration is 50-75 mg/L, sodium succinate is the best carbon source, C/N is 8, temperature is 35℃, shaking speed is 180 r/min, inoculation quantity is 3%, and pH value is 7.0. Strain JB4 shows good heterotrophic nitrification ability under above conditions, and the removal rate of ammonia nitrogen is 76.95%-83.54% within 12 h. |
| Key words： | microbiology; heterotrophic nitrification; single factor control; Bacillus sp.; biological nitrogen removal |
| 发表期数： | 2017年8月第15期 |
| 引用格式： | 李泳洪，陈小岚，许旭萍. 异养硝化-好氧反硝化菌Bacillus sp. JB4的异养硝化特性研究[J]. 中国科技论文在线精品论文，2017，10（15）：1694-1700. |
2
评论数 0请您登录
暂无评论
下载全文
多维论文