PMID- 36963578
OWN - NLM
STAT- MEDLINE
DCOM- 20230414
LR  - 20230414
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 327
DP  - 2023 Jun
TI  - In-situ modified biosynthetic crystals with lanthanum for fluoride removal based 
      on microbially induced calcium precipitation: Characterization, kinetics, and 
      mechanism.
PG  - 138472
LID - S0045-6535(23)00739-7 [pii]
LID - 10.1016/j.chemosphere.2023.138472 [doi]
AB  - In this research, in-situ modified biosynthetic crystals with lanthanum (BC-La) 
      were synthesized based on anaerobic microbially induced calcium precipitation 
      (MICP) and investigated its capacity for groundwater defluoridation under various 
      operational conditions. The kinetic and thermodynamic models were simulated to 
      explore the effect of the material on the removal of fluoride ion (F(-)) under 
      various parameters (pH, initial concentration of F(-), and temperature). BC-La 
      had the maximum F(-) adsorption capacity of 10.92 mg g(-1) and 96.66% removal 
      efficiency. The pseudo-second-order kinetic model and Langmuir isotherm model 
      were the best kinetic and isotherm models for F(-) removal from BC-La, which 
      indicated that F(-) were mainly spontaneously removed through chemisorption and 
      adsorption processes. The specific surface area was 54.26 m(2) g(-1) and the 
      average pore size was 9.0670 nm. BC-La mainly contained LaCO(3)OH, LaPO(4), 
      CaCO(3), Ca(5) (PO(4))(3)OH, and F(-) was mainly removed through ion exchange 
      with the material surface. Moreover, OH(-), PO(4)(3-), and CO(3)(2-) 
      significantly influenced the F(-) removal. This work suggested a novel method for 
      in-situ modification of anaerobic biosynthetic crystals, which improved the 
      defluoridation effect of traditional biosynthetic crystals, increased the 
      stability of the BC-La and allowed to remove F(-) from groundwater consistently.
CI  - Copyright (c) 2023 Elsevier Ltd. All rights reserved.
FAU - Zhou, Zhennan
AU  - Zhou 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 - 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; State Key Laboratory of Green Building in West China, Xi'an 
      University of Architecture and Technology, Xi'an, 710055, China. Electronic 
      address: sjf1977518@sina.com.
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 - Huang, Tinglin
AU  - Huang T
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; State Key Laboratory of Green Building in West China, Xi'an 
      University of Architecture and Technology, Xi'an, 710055, China.
FAU - Li, Tianmeng
AU  - Li T
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
DEP - 20230322
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - Q80VPU408O (Fluorides)
RN  - SY7Q814VUP (Calcium)
RN  - 6I3K30563S (Lanthanum)
RN  - 0 (Calcium, Dietary)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Fluorides/chemistry
MH  - Calcium
MH  - Lanthanum/chemistry
MH  - Kinetics
MH  - *Water Purification/methods
MH  - Calcium, Dietary
MH  - Adsorption
MH  - Hydrogen-Ion Concentration
MH  - *Water Pollutants, Chemical/chemistry
OTO - NOTNLM
OT  - Adsorption dynamics
OT  - Aqueous solution
OT  - Biosynthetic crystals
OT  - Defluoridation
OT  - Lanthanum modification
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/03/25 06:00
MHDA- 2023/04/14 06:42
CRDT- 2023/03/24 20:29
PHST- 2022/12/31 00:00 [received]
PHST- 2023/03/17 00:00 [revised]
PHST- 2023/03/19 00:00 [accepted]
PHST- 2023/04/14 06:42 [medline]
PHST- 2023/03/25 06:00 [pubmed]
PHST- 2023/03/24 20:29 [entrez]
AID - S0045-6535(23)00739-7 [pii]
AID - 10.1016/j.chemosphere.2023.138472 [doi]
PST - ppublish
SO  - Chemosphere. 2023 Jun;327:138472. doi: 10.1016/j.chemosphere.2023.138472. Epub 
      2023 Mar 22.