Microbial Community Analysis and Effect of nZVI on Autotrophic Denitrification in a Biological Reactor

Jun Feng Su; Dong Xin Guo; Ting Lin Huang; Xue Chen Bai; Jin Suo Lu; Li Wei; Lei He

doi:10.1089/ees.2018.0367

Microbial Community Analysis and Effect of nZVI on Autotrophic Denitrification in a Biological Reactor

Jun Feng Su^*
, Dong Xin Guo
, Ting Lin Huang
, Xue Chen Bai
, Jin Suo Lu
, Li Wei
, Lei He

^*Corresponding author for this work

School of Environment

Xi'an University of Architecture and Technology
China United Northwest Institute for Engineering Design and Research Co Ltd. (CUCED)

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

This study investigates the influence of dosage of nanoscale zero-valent iron (nZVI) on an immobilized biological autotrophic denitrification reactor. Effects of hydraulic retention time (HRT; 11, 13, and 15 h), initial Fe(II) concentration (10, 20, and 30 mg/L), and dosage of nZVI (2, 4, and 6 mg/L) were analyzed by response surface methodology to determine the effect on denitrification. The highest nitrate removal efficiency of 95% occurred under the following conditions: HRT of 13 h, 21 mg/L Fe(II), and 4 mg/L nZVI. High-throughput sequencing was used to analyze the compositions and structures of the microbial community in the bioreactor at different stages. Addition of nZVI had a significant impact on microbial richness and diversity. In addition, strain CC76 and relevant bacteria were the dominant bacteria for the removal of nitrate in the biological reactor.

Original language	English
Pages (from-to)	564-572
Number of pages	9
Journal	Environmental Engineering Science
Volume	36
Issue number	5
DOIs	https://doi.org/10.1089/ees.2018.0367
State	Published - May 2019

Keywords

autotrophic denitrification
dosage of nZVI
microbial community
response surface methodology.

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10.1089/ees.2018.0367

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title = "Microbial Community Analysis and Effect of nZVI on Autotrophic Denitrification in a Biological Reactor",

abstract = "This study investigates the influence of dosage of nanoscale zero-valent iron (nZVI) on an immobilized biological autotrophic denitrification reactor. Effects of hydraulic retention time (HRT; 11, 13, and 15 h), initial Fe(II) concentration (10, 20, and 30 mg/L), and dosage of nZVI (2, 4, and 6 mg/L) were analyzed by response surface methodology to determine the effect on denitrification. The highest nitrate removal efficiency of 95\% occurred under the following conditions: HRT of 13 h, 21 mg/L Fe(II), and 4 mg/L nZVI. High-throughput sequencing was used to analyze the compositions and structures of the microbial community in the bioreactor at different stages. Addition of nZVI had a significant impact on microbial richness and diversity. In addition, strain CC76 and relevant bacteria were the dominant bacteria for the removal of nitrate in the biological reactor.",

keywords = "autotrophic denitrification, dosage of nZVI, microbial community, response surface methodology.",

author = "Su, \{Jun Feng\} and Guo, \{Dong Xin\} and Huang, \{Ting Lin\} and Bai, \{Xue Chen\} and Lu, \{Jin Suo\} and Li Wei and Lei He",

note = "Publisher Copyright: {\textcopyright} 2019, Mary Ann Liebert, Inc.",

year = "2019",

month = may,

doi = "10.1089/ees.2018.0367",

language = "英语",

volume = "36",

pages = "564--572",

journal = "Environmental Engineering Science",

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TY - JOUR

T1 - Microbial Community Analysis and Effect of nZVI on Autotrophic Denitrification in a Biological Reactor

AU - Su, Jun Feng

AU - Guo, Dong Xin

AU - Huang, Ting Lin

AU - Bai, Xue Chen

AU - Lu, Jin Suo

AU - Wei, Li

AU - He, Lei

PY - 2019/5

Y1 - 2019/5

N2 - This study investigates the influence of dosage of nanoscale zero-valent iron (nZVI) on an immobilized biological autotrophic denitrification reactor. Effects of hydraulic retention time (HRT; 11, 13, and 15 h), initial Fe(II) concentration (10, 20, and 30 mg/L), and dosage of nZVI (2, 4, and 6 mg/L) were analyzed by response surface methodology to determine the effect on denitrification. The highest nitrate removal efficiency of 95% occurred under the following conditions: HRT of 13 h, 21 mg/L Fe(II), and 4 mg/L nZVI. High-throughput sequencing was used to analyze the compositions and structures of the microbial community in the bioreactor at different stages. Addition of nZVI had a significant impact on microbial richness and diversity. In addition, strain CC76 and relevant bacteria were the dominant bacteria for the removal of nitrate in the biological reactor.

AB - This study investigates the influence of dosage of nanoscale zero-valent iron (nZVI) on an immobilized biological autotrophic denitrification reactor. Effects of hydraulic retention time (HRT; 11, 13, and 15 h), initial Fe(II) concentration (10, 20, and 30 mg/L), and dosage of nZVI (2, 4, and 6 mg/L) were analyzed by response surface methodology to determine the effect on denitrification. The highest nitrate removal efficiency of 95% occurred under the following conditions: HRT of 13 h, 21 mg/L Fe(II), and 4 mg/L nZVI. High-throughput sequencing was used to analyze the compositions and structures of the microbial community in the bioreactor at different stages. Addition of nZVI had a significant impact on microbial richness and diversity. In addition, strain CC76 and relevant bacteria were the dominant bacteria for the removal of nitrate in the biological reactor.

KW - autotrophic denitrification

KW - dosage of nZVI

KW - microbial community

KW - response surface methodology.

UR - https://www.scopus.com/pages/publications/85065994448

U2 - 10.1089/ees.2018.0367

DO - 10.1089/ees.2018.0367

M3 - 文章

AN - SCOPUS:85065994448

SN - 1092-8758

VL - 36

SP - 564

EP - 572

JO - Environmental Engineering Science

JF - Environmental Engineering Science

IS - 5

ER -

Microbial Community Analysis and Effect of nZVI on Autotrophic Denitrification in a Biological Reactor

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Keywords

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