PMID- 38176381
OWN - NLM
STAT- MEDLINE
DCOM- 20240115
LR  - 20240115
IS  - 1095-8630 (Electronic)
IS  - 0301-4797 (Linking)
VI  - 351
DP  - 2024 Feb
TI  - Mechanisms of ammonia, calcium and heavy metal removal from nutrient-poor water 
      by Acinetobacter calcoaceticus strain HM12.
PG  - 119912
LID - S0301-4797(23)02700-7 [pii]
LID - 10.1016/j.jenvman.2023.119912 [doi]
AB  - An Acinetobacter calcoaceticus strain HM12 capable of heterotrophic 
      nitrification-aerobic denitrification (HN-AD) under nutrient-poor conditions was 
      isolated, with an ammonia nitrogen (NH(4)(+)-N) removal efficiency of 98.53%. It 
      can also remove heavy metals by microbial induced calcium precipitation (MICP) 
      with a Ca(2+) removal efficiency of 75.91%. Optimal conditions for HN-AD and 
      mineralization of the strain were determined by kinetic analysis (pH = 7, 
      C/N = 2.0, Ca(2+) = 70.0 mg L(-1), NH(4)(+)-N = 5.0 mg L(-1)). Growth curves and 
      nitrogen balance elucidated nitrogen degradation pathways capable of converting 
      NH(4)(+)-N to gaseous nitrogen. The analysis of the bioprecipitation showed that 
      Zn(2+) and Cd(2+) were removed by the MICP process through co-precipitation and 
      adsorption (maximum removal efficiencies of 93.39% and 80.70%, respectively), 
      mainly ZnCO(3), CdCO(3), ZnHPO(4), Zn(3)(PO(4))(2) and Cd(3)(PO(4))(2). Strain 
      HM12 produces humic and fulvic acids to counteract the toxicity of pollutants, as 
      well as aromatic proteins to increase extracellular polymers (EPS) and promote 
      the biomineralization process. This study provides a experimental evidence for 
      the simultaneous removal of multiple pollutants from nutrient-poor waters.
CI  - Copyright (c) 2023 Elsevier Ltd. All rights reserved.
FAU - Zhang, Lingfei
AU  - Zhang L
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: lingfei@xauat.edu.cn.
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 - 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 - 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 - Li, Xuan
AU  - Li X
AD  - College of Environmental Science & Engineering, Yancheng Institute of Technology, 
      Yancheng, 224051, China.
LA  - eng
PT  - Journal Article
DEP - 20240104
PL  - England
TA  - J Environ Manage
JT  - Journal of environmental management
JID - 0401664
RN  - 7664-41-7 (Ammonia)
RN  - SY7Q814VUP (Calcium)
RN  - 0 (Nitrites)
RN  - 00BH33GNGH (Cadmium)
RN  - 0 (Metals, Heavy)
RN  - N762921K75 (Nitrogen)
RN  - 0 (Environmental Pollutants)
SB  - IM
MH  - Ammonia
MH  - Denitrification
MH  - *Acinetobacter calcoaceticus/metabolism
MH  - Calcium/metabolism
MH  - Nitrites/metabolism
MH  - Kinetics
MH  - Cadmium
MH  - Aerobiosis
MH  - Nitrification
MH  - *Metals, Heavy
MH  - Nitrogen/analysis
MH  - Heterotrophic Processes
MH  - Nutrients
MH  - *Environmental Pollutants
OTO - NOTNLM
OT  - Heavy metal removal
OT  - Heterotrophic nitrification-aerobic denitrification
OT  - Microbial induced calcium precipitation
OT  - Nitrogen balance
OT  - Nutrient-poor
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- 2024/01/05 00:42
MHDA- 2024/01/15 12:42
CRDT- 2024/01/04 18:16
PHST- 2023/09/12 00:00 [received]
PHST- 2023/12/07 00:00 [revised]
PHST- 2023/12/12 00:00 [accepted]
PHST- 2024/01/15 12:42 [medline]
PHST- 2024/01/05 00:42 [pubmed]
PHST- 2024/01/04 18:16 [entrez]
AID - S0301-4797(23)02700-7 [pii]
AID - 10.1016/j.jenvman.2023.119912 [doi]
PST - ppublish
SO  - J Environ Manage. 2024 Feb;351:119912. doi: 10.1016/j.jenvman.2023.119912. Epub 
      2024 Jan 4.