您好，欢迎访问浙江省农业科学院 机构知识库！
浙江省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Deciphering autotrophic and heterotrophic partial nitrification under salinity stress

文献类型： 外文期刊

作者： Lin, Qiang 1 ; Luo, Ancheng 1 ; Wang, Yunlong 2 ; Liang, Zhiwei 1 ; Zhang, Yan 1 ; Yu, Chisheng 1 ;

作者机构： 1.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou, Peoples R China

2.Zhejiang Acad Agr Sci, Hangzhou, Peoples R China

3.Zhejiang Univ, Coll Environm & Resource Sci Room B518, 866 Yuhangtang Rd, Hangzhou 310058, Peoples R China

关键词： Autotrophy; Heterotrophy; Partial nitrification; Salinity load; Extracellular polymeric substances; Microbial succession; Autotrophy; Heterotrophy; Partial nitrification; Salinity load; Extracellular polymeric substances; Microbial succession

期刊名称：INTERNATIONAL BIODETERIORATION & BIODEGRADATION （ 影响因子：4.907； 五年影响因子：5.354 ）

ISSN： 0964-8305

年卷期： 2022 年 174 卷

页码：

收录情况： SCI

摘要： Autotrophic (R1) and heterotrophic (R2) partial nitrification exhibited differential nitrifying performance under salinity free conditions, however, their responses to salinity stress haven't been clearly established. Comparing their salinity response mechanisms provides intriguing insights for the treatment of saline wastewater. In the current study, assisted by organic matter, R2 excelled at ammonia removal efficiency (ARE) at 0 g/L NaCl. Gradual elevation of salinity load (>10 g/L) highlighted the higher salinity sensitivity of R2 as evidenced by precipitous drop in ARE. Furthermore, ARE of R2 reached to 73.25% at 50 g/L NaCl, while, ARE of R1 remained as high as 85.22%. The elevation in the ratio of protein to polysaccharides (PN/PS) in the tightly attached extracellular polymer substances of R1 suggested its enhancement of nutrients transferring efficiency by secreting more hydrophilic proteins, while the drop in the PN/PS of R2 implied its actions in stabilizing the aggregate structure under salinity stress. Subsequently, microbial analysis linked the higher salinity sensitivity of R2 with its greater loss of AOB density. Important AOB such as uncultured Nitrosomonas sp. exhibited differing salinity tolerances in two reactors. In a nut shell, the cliff-like drop of total bacterial density contrasted strongly with greater levels of total EPS in R2, indicating EPS may offer limited microbial protection under salinity stress.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：浙江省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台