PMID- 38271885
OWN - NLM
STAT- MEDLINE
DCOM- 20240219
LR  - 20240219
IS  - 1095-8630 (Electronic)
IS  - 0301-4797 (Linking)
VI  - 353
DP  - 2024 Feb 27
TI  - Mobility, speciation of cadmium, and bacterial community composition along soil 
      depths during microbial carbonate precipitation under simulated acid rain.
PG  - 120018
LID - S0301-4797(24)00004-5 [pii]
LID - 10.1016/j.jenvman.2024.120018 [doi]
AB  - An overexploitation of earth resources results in acid deposition in soil, which 
      adversely impacts soil ecosystems and biodiversity and affects conventional heavy 
      metal remediation using immobilization. A series of column experiments was 
      conducted in this study to compare the cadmium (Cd) retention stability through 
      biotic and abiotic carbonate precipitation impacted by simulated acid rain (SAR), 
      to build a comprehensive understanding of cadmium speciation and distribution 
      along soil depth and to elucidate the biogeochemical bacteria-soil-heavy metal 
      interfaces. The strain of Sporosarcina pasteurii DSM 33 was used to trigger the 
      biotic carbonate precipitation and cultivated throughout the 60-day column 
      incubation. Results of soil pH, electrical conductivity (EC), and quantitative 
      CdCO(3)/CaCO(3) analysis concluded that the combination of biotic and abiotic 
      soil treatment could reinforce soil buffering capacity as a strong defense 
      mechanism against acid rain disturbance. Up to 1.8 +/- 0.04 U/mg urease enzyme 
      activity was observed in combination soil from day 10, confirming the sustained 
      effect of urease-mediated microbial carbonate precipitation. Cadmium speciation 
      and distribution analyses provided new insights into the dual stimulation of 
      carbonate-bound and Fe/Mn-bound phases of cadmium immobilization under 
      microbially induced carbonate precipitation (MICP). As confirmed by the microbial 
      community analysis, outsourcing urea triggered diverse microbial metabolic 
      responses, notably carbonate precipitation and dissimilatory iron metabolism, in 
      both oxygen-rich topsoil and oxygen-depleted subsurface layers. The overall 
      investigation suggests the feasibility of applying MICP for soil Cd remediation 
      under harsh environments and stratagem by selecting microbial functionality to 
      overcome environmental challenges.
CI  - Copyright (c) 2024 Elsevier Ltd. All rights reserved.
FAU - Li, Weila
AU  - Li W
AD  - Department of Environmental Science and Engineering, Guangdong Technion - Israel 
      Institute of Technology, Shantou 515063, China; Department of Civil and 
      Environmental Engineering, University of Delaware, Newark, DE 19716, USA.
FAU - Cai, Yiting
AU  - Cai Y
AD  - Department of Environmental Science and Engineering, Guangdong Technion - Israel 
      Institute of Technology, Shantou 515063, China.
FAU - Li, Yilin
AU  - Li Y
AD  - Department of Environmental Science and Engineering, Guangdong Technion - Israel 
      Institute of Technology, Shantou 515063, China.
FAU - Achal, Varenyam
AU  - Achal V
AD  - Department of Environmental Science and Engineering, Guangdong Technion - Israel 
      Institute of Technology, Shantou 515063, China; Technion - Israel Institute of 
      Technology, Haifa 320003, Israel; Guangdong Provincial Key Laboratory of 
      Materials and Technologies for Energy Conversion, Guangdong Technion - Israel 
      Institute of Technology, Shantou 515063, China. Electronic address: 
      varenyam.achal@gtiit.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20240124
PL  - England
TA  - J Environ Manage
JT  - Journal of environmental management
JID - 0401664
RN  - 00BH33GNGH (Cadmium)
RN  - 0 (Acid Rain)
RN  - 0 (Soil)
RN  - H0G9379FGK (Calcium Carbonate)
RN  - EC 3.5.1.5 (Urease)
RN  - 0 (Carbonates)
RN  - 0 (Metals, Heavy)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Cadmium/chemistry
MH  - *Acid Rain
MH  - Soil/chemistry
MH  - Calcium Carbonate/chemistry
MH  - Ecosystem
MH  - Urease/metabolism
MH  - Carbonates/chemistry
MH  - Bacteria/metabolism
MH  - *Metals, Heavy
MH  - Oxygen/metabolism
OTO - NOTNLM
OT  - Bioremediation
OT  - Heavy metals
OT  - Immobilization
OT  - Iron metabolization
OT  - Microbial diversity
OT  - Urease
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- 2024/01/26 00:43
MHDA- 2024/02/19 06:43
CRDT- 2024/01/25 18:08
PHST- 2023/07/09 00:00 [received]
PHST- 2023/10/07 00:00 [revised]
PHST- 2024/01/02 00:00 [accepted]
PHST- 2024/02/19 06:43 [medline]
PHST- 2024/01/26 00:43 [pubmed]
PHST- 2024/01/25 18:08 [entrez]
AID - S0301-4797(24)00004-5 [pii]
AID - 10.1016/j.jenvman.2024.120018 [doi]
PST - ppublish
SO  - J Environ Manage. 2024 Feb 27;353:120018. doi: 10.1016/j.jenvman.2024.120018. 
      Epub 2024 Jan 24.