PMID- 35030488
OWN - NLM
STAT- MEDLINE
DCOM- 20220211
LR  - 20220211
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 428
DP  - 2022 Apr 15
TI  - Synergistic removal of fluoride, calcium, and nitrate in a biofilm reactor based 
      on anaerobic microbially induced calcium precipitation.
PG  - 128102
LID - S0304-3894(21)03071-5 [pii]
LID - 10.1016/j.jhazmat.2021.128102 [doi]
AB  - Fluoride (F(-)) and calcium (Ca(2+)) are primary causes of skeleton fluorosis and 
      scaling, posing a grievous threat to aquatic lives and public health. Therefore, 
      a novel strategy for polluted groundwater in immobilized biofilm reactor based on 
      the anaerobic microbial induced calcium precipitation (MICP) was proposed, in 
      which loofah was used as a multifunctional strain Cupriavidus sp. W12 growth 
      carrier. Effects of different hydraulic retention time (HRT), initial 
      F(-)concentration, and pH on the synchronous removal of pollutants were examined. 
      Under stable operation conditions, the highest efficiencies for Ca(2+), F(-), and 
      nitrate (NO(3)(-)-N) reached 76.73%, 94.92%, and 100%, respectively. Furthermore, 
      gas chromatography (GC), Fluorescence excitation-emission matrix (EEM), X-ray 
      diffraction (XRD), Scanning electron microscope-energy dispersive spectroscope 
      (SEM-EDS), and Fourier transform infrared spectrometer (FTIR) comprehensively 
      clarified the mechanism of pollutants removal. The results elucidated that the 
      removal of various pollutants was achieved through a combination of anaerobic 
      MICP, adsorption, and co-precipitation. Besides, high-throughput sequencing 
      analysis showed that Cupriavidus had a predominant proportion of 42.36% in the 
      reactor and had stability against pH impact. As the first application of a 
      biofilm reactor based on anaerobic MICP, it put forward a new insight for 
      efficient defluorination and decalcification.
CI  - Copyright (c) 2022 Elsevier B.V. All rights reserved.
FAU - Zhang, Ruijie
AU  - Zhang R
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of 
      Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 
      710055, China.
FAU - Ali, Amjad
AU  - Ali A
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of 
      Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 
      710055, China.
FAU - Su, Junfeng
AU  - Su J
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of 
      Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 
      710055, China. Electronic address: sjf1977518@sina.com.
FAU - Liu, Jiaran
AU  - Liu J
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of 
      Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 
      710055, China.
FAU - Wang, Zhao
AU  - Wang Z
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of 
      Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 
      710055, China.
FAU - Li, Jiawei
AU  - Li J
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of 
      Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 
      710055, China.
FAU - Liu, Yu
AU  - Liu Y
AD  - School of Environmental and Municipal Engineering, Xi'an University of 
      Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of 
      Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 
      710055, China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20211217
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Nitrates)
RN  - O3B55K4YKI (Calcium Fluoride)
RN  - Q80VPU408O (Fluorides)
RN  - SY7Q814VUP (Calcium)
SB  - IM
MH  - Anaerobiosis
MH  - Biofilms
MH  - Bioreactors
MH  - Calcium
MH  - Calcium Fluoride
MH  - Denitrification
MH  - *Fluorides
MH  - *Nitrates
OTO - NOTNLM
OT  - Anaerobic MICP
OT  - Biofilm reactor
OT  - Decalcification
OT  - Denitrification
OT  - Fluoride
EDAT- 2022/01/15 06:00
MHDA- 2022/02/12 06:00
CRDT- 2022/01/14 20:17
PHST- 2021/10/20 00:00 [received]
PHST- 2021/12/02 00:00 [revised]
PHST- 2021/12/15 00:00 [accepted]
PHST- 2022/01/15 06:00 [pubmed]
PHST- 2022/02/12 06:00 [medline]
PHST- 2022/01/14 20:17 [entrez]
AID - S0304-3894(21)03071-5 [pii]
AID - 10.1016/j.jhazmat.2021.128102 [doi]
PST - ppublish
SO  - J Hazard Mater. 2022 Apr 15;428:128102. doi: 10.1016/j.jhazmat.2021.128102. Epub 
      2021 Dec 17.