PMID- 35200110
OWN - NLM
STAT- MEDLINE
DCOM- 20230707
LR  - 20230718
IS  - 1479-487X (Electronic)
IS  - 0959-3330 (Linking)
VI  - 44
IP  - 19
DP  - 2023 Jul-Aug
TI  - Nitrate removal under low carbon to nitrogen ratio by modified corn straw 
      bioreactor: Optimization and possible mechanism.
PG  - 2889-2899
LID - 10.1080/09593330.2022.2046649 [doi]
AB  - ABSTRACTThe removal of nitrate (NO(3)(-)-N) from water bodies under the 
      conditions of poor nutrition and low carbon to nitrogen (C/N) ratio is a 
      widespread problem. In this study, modified corn stalk (CS) was used to 
      immobilize Burkholderia sp. CF6 with cellulose-degrading and denitrifying 
      abilities. The optimal operating parameters of the bioreactor were explored. The 
      results showed that under the hydraulic retention time (HRT) of 3 h and the C/N 
      ratio of 2.0, the maximum nitrate removal efficiency was 96.75%. In addition, the 
      organic substances in the bioreactor under different C/N ratios and HRT were 
      analyzed by three-dimensional fluorescence excitation-emission mass spectrometry 
      (3D-EEM), and it was found that the microorganisms have high metabolic activity. 
      Scanning electron microscope (SEM) showed that the new material has excellent 
      immobilization effects. Fourier transform infrared spectrometer (FTIR) showed 
      that it has potential as a solid carbon source. Through high-throughput 
      sequencing analysis, Burkholderia sp. CF6 was observed as the main bacteria 
      present in the bioreactor. These research results showed that the use of waste 
      corn stalks waste provides a theoretical basis for the advanced treatment of low 
      C/N ratio wastewater.
FAU - Shi, Jun
AU  - Shi J
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
FAU - Su, Junfeng
AU  - Su J
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
FAU - Ali, Amjad
AU  - Ali A
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
FAU - Chen, Changlun
AU  - Chen C
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
FAU - Xu, Liang
AU  - Xu L
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
FAU - Yan, Huan
AU  - Yan H
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
FAU - Su, Lindong
AU  - Su L
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Xi'an Yiwei Putai Environmental Protection Company Limited, Xi'an, People's 
      Republic of China.
FAU - Qi, Zening
AU  - Qi Z
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of 
      Architecture and Technology, Xi'an, People's Republic of China.
AD  - Xi'an Yiwei Putai Environmental Protection Company Limited, Xi'an, People's 
      Republic of China.
LA  - eng
PT  - Journal Article
DEP - 20220308
PL  - England
TA  - Environ Technol
JT  - Environmental technology
JID - 9884939
RN  - 0 (Nitrates)
RN  - 7440-44-0 (Carbon)
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - *Nitrates/chemistry
MH  - *Zea mays/metabolism
MH  - Carbon/chemistry
MH  - Nitrogen/metabolism
MH  - Denitrification
MH  - Bioreactors/microbiology
OTO - NOTNLM
OT  - bioreactor
OT  - denitrification
OT  - low C/N
OT  - microbial community structure
OT  - modified corn stalk
EDAT- 2022/02/25 06:00
MHDA- 2023/07/07 06:42
CRDT- 2022/02/24 12:19
PHST- 2023/07/07 06:42 [medline]
PHST- 2022/02/25 06:00 [pubmed]
PHST- 2022/02/24 12:19 [entrez]
AID - 10.1080/09593330.2022.2046649 [doi]
PST - ppublish
SO  - Environ Technol. 2023 Jul-Aug;44(19):2889-2899. doi: 
      10.1080/09593330.2022.2046649. Epub 2022 Mar 8.