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Author:

Zhang, Li (Zhang, Li.) | Lan, Shuang (Lan, Shuang.) | Hao, Shiwei (Hao, Shiwei.) | Dong, Tingjun (Dong, Tingjun.) | Peng, Yongzhen (Peng, Yongzhen.) | Yang, Jiachun (Yang, Jiachun.)

Indexed by:

EI Scopus SCIE

Abstract:

The mechanisms of Fe2+ on nitrogen and phosphorus removal and functional bacterial competition in anammox systems was investigated. Under 0.12 mM Fe2+, the performance of nitrogen and phosphorus removal increased by 10.08 % and 151.91 %, respectively, compared with the control stage. Phosphorus removal was achieved through extracellular polymeric substance (EPS) induced biomineralization to form Fe-P minerals, and functional group C-O-C in EPS played a critical role. T-EPSs was the major nucleation site due to it maintaining the supersaturated state (saturation index > 0) of Fe-P minerals for a long time. Population succession showed that Fe2+ weakened the competition between heterotrophic denitrifier (Denitrasoma) and anammox microbe (Can-didatus Brocadia) for space and substrates, which was favorable for the enrichment of anammox biomass. Moreover, the variation in gene abundance (such as Hao, Cyt c, and Nir) indicated that Fe2+ improved electron behaviors (generation, transport, and consumption) during the nitrogen metabolism of anammox systems.

Keyword:

Bio-induced mineralization Simultaneous removal of nitrogen and phosphorus Ferrous ion Anammox Microbial driving mechanisms

Author Community:

  • [ 1 ] [Zhang, Li]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing, Peoples R China
  • [ 2 ] [Lan, Shuang]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing, Peoples R China
  • [ 3 ] [Hao, Shiwei]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing, Peoples R China
  • [ 4 ] [Dong, Tingjun]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing, Peoples R China
  • [ 5 ] [Peng, Yongzhen]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing, Peoples R China
  • [ 6 ] [Yang, Jiachun]Shuifa Shandong Water Dev Grp Co Ltd, Shandong 274200, Peoples R China

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Source :

BIORESOURCE TECHNOLOGY

ISSN: 0960-8524

Year: 2022

Volume: 362

1 1 . 4

JCR@2022

1 1 . 4 0 0

JCR@2022

ESI Discipline: BIOLOGY & BIOCHEMISTRY;

ESI HC Threshold:43

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 17

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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