Immobilization of cadmium in soil by microbially induced carbonate precipitation with Exiguobacterium undae at low temperature

Deepika Kumari; Xiangliang Pan; Duu Jong Lee; Varenyam Achal

doi:10.1016/j.ibiod.2014.07.007

Immobilization of cadmium in soil by microbially induced carbonate precipitation with Exiguobacterium undae at low temperature

Deepika Kumari, Xiangliang Pan, Duu Jong Lee^*, Varenyam Achal

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

128 Scopus citations

Abstract

Microbially induced carbonate precipitation (MICP) is an advanced biological treatment technology to immobilize heavy metals in form of carbonate salts. In this MICP study, ureolytic Exiguobacterium undae was employed for immobilization of cadmium in contaminated soil at low temperature (10°C). The sequential extraction test revealed conversion of more than 90% of cadmium in the tested soil from the soluble-exchangeable fraction to carbonate-bound fraction in 14 days of treatment. The cadmium may be precipitated in a separate CdCO₃ phase or be co-precipitated in calcite crystals. Activities of urease and dehydrogenase were enhanced during MICP, which were not affected by the testing temperatures. MICP with E. undae is a biological approach that may be worth investigating further to immobilize cadmium in soils of cold regimes.

Original language	English
Pages (from-to)	98-102
Number of pages	5
Journal	International Biodeterioration and Biodegradation
Volume	94
DOIs	https://doi.org/10.1016/j.ibiod.2014.07.007
State	Published - Oct 2014
Externally published	Yes

Keywords

Bioremediation
Dehydrogenase
Heavy metal
Microbial carbonate
Urase

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10.1016/j.ibiod.2014.07.007

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title = "Immobilization of cadmium in soil by microbially induced carbonate precipitation with Exiguobacterium undae at low temperature",

abstract = "Microbially induced carbonate precipitation (MICP) is an advanced biological treatment technology to immobilize heavy metals in form of carbonate salts. In this MICP study, ureolytic Exiguobacterium undae was employed for immobilization of cadmium in contaminated soil at low temperature (10°C). The sequential extraction test revealed conversion of more than 90% of cadmium in the tested soil from the soluble-exchangeable fraction to carbonate-bound fraction in 14 days of treatment. The cadmium may be precipitated in a separate CdCO3 phase or be co-precipitated in calcite crystals. Activities of urease and dehydrogenase were enhanced during MICP, which were not affected by the testing temperatures. MICP with E. undae is a biological approach that may be worth investigating further to immobilize cadmium in soils of cold regimes.",

keywords = "Bioremediation, Dehydrogenase, Heavy metal, Microbial carbonate, Urase",

author = "Deepika Kumari and Xiangliang Pan and Lee, {Duu Jong} and Varenyam Achal",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China ( U1120302 and 41350110533 ).",

year = "2014",

month = oct,

doi = "10.1016/j.ibiod.2014.07.007",

language = "英语",

volume = "94",

pages = "98--102",

journal = "International Biodeterioration and Biodegradation",

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T1 - Immobilization of cadmium in soil by microbially induced carbonate precipitation with Exiguobacterium undae at low temperature

AU - Kumari, Deepika

AU - Pan, Xiangliang

AU - Lee, Duu Jong

AU - Achal, Varenyam

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China ( U1120302 and 41350110533 ).

PY - 2014/10

Y1 - 2014/10

N2 - Microbially induced carbonate precipitation (MICP) is an advanced biological treatment technology to immobilize heavy metals in form of carbonate salts. In this MICP study, ureolytic Exiguobacterium undae was employed for immobilization of cadmium in contaminated soil at low temperature (10°C). The sequential extraction test revealed conversion of more than 90% of cadmium in the tested soil from the soluble-exchangeable fraction to carbonate-bound fraction in 14 days of treatment. The cadmium may be precipitated in a separate CdCO3 phase or be co-precipitated in calcite crystals. Activities of urease and dehydrogenase were enhanced during MICP, which were not affected by the testing temperatures. MICP with E. undae is a biological approach that may be worth investigating further to immobilize cadmium in soils of cold regimes.

AB - Microbially induced carbonate precipitation (MICP) is an advanced biological treatment technology to immobilize heavy metals in form of carbonate salts. In this MICP study, ureolytic Exiguobacterium undae was employed for immobilization of cadmium in contaminated soil at low temperature (10°C). The sequential extraction test revealed conversion of more than 90% of cadmium in the tested soil from the soluble-exchangeable fraction to carbonate-bound fraction in 14 days of treatment. The cadmium may be precipitated in a separate CdCO3 phase or be co-precipitated in calcite crystals. Activities of urease and dehydrogenase were enhanced during MICP, which were not affected by the testing temperatures. MICP with E. undae is a biological approach that may be worth investigating further to immobilize cadmium in soils of cold regimes.

KW - Bioremediation

KW - Dehydrogenase

KW - Heavy metal

KW - Microbial carbonate

KW - Urase

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U2 - 10.1016/j.ibiod.2014.07.007

DO - 10.1016/j.ibiod.2014.07.007

M3 - 文章

AN - SCOPUS:84905219467

SN - 0964-8305

VL - 94

SP - 98

EP - 102

JO - International Biodeterioration and Biodegradation

JF - International Biodeterioration and Biodegradation

ER -

Immobilization of cadmium in soil by microbially induced carbonate precipitation with Exiguobacterium undae at low temperature

Abstract

Keywords

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