Performance of microbial induced carbonate precipitation for immobilizing Cd in water and soil

Peng, Dinghua; Qiao, Suyu; Luo, Yao; Ma, Hang; Zhang, Lei; Hou, Siyu; Wu, Bin; Xu, Heng

doi:10.1016/j.jhazmat.2020.123116

Cited by 110 publications

(25 citation statements)

References 46 publications

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“…Firstly, the EGS contain many substances involving amino acid that had functional group similar to urea, which could be used by urease (Nagamalli et al 2017). Secondly, the enrichment of calcium carbonate source provided for the ureolytic bacteria by the addition of EGS to the soil, triggered the MICP process (Peng et al 2020). Therefore the outcome revealed that the EGS can be combined with urease-producing bacteria as an alternate of urea, to achieve high immobilization e ciency in the soil.…”

Section: Fractionation Of Pb and CD In Soilmentioning

confidence: 99%

Study on the performance of carbonate-mineralized bacteria combined with eggshell for immobilizing Pb and Cd in water and soil

Wei

Yashir

et al. 2021

Environ Sci Pollut Res

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Microbially induced carbonate precipitation (MICP) is an advanced bioremediation approach to remediate heavy metals (HMs) contaminated water and soil. In this study, metal tolerant urease-producing bacterial isolates, namely UR1, UR16, UR20 and UR21, were selected based on their urease activity. The e ciency of these isolates in water for Pb and Cd immobilization was explored. Our results revealed that UR21 had the highest removal rates of Pb (81.9%) and Cd (65.0%) in solution within 72 h through MICP. The scanning electron microscopy-energy dispersive x-ray and x-ray diffraction analysis con rmed the structure and the existence of PbCO 3 and CdCO 3 crystals in the precipitates. In addition, the strain UR21, in combination with urea/eggshell waste (EGS) or both, was further employed to investigate the effect of MICP on soil enzymatic activity, chemical fractions and bioavailability of Pb and Cd. The outcomes indicated that the applied treatments reduced the proportion of soluble-exchangeable Pb and Cd, resulted an increment in carbonated bound Pb and Cd in the soil. The DTPA extractable Pb and Cd was reduced by 29.2% and 25.2% with the treatment of UR21 + urea + EGS as compared to the control. Besides, the application of UR21 and EGS signi cantly increased the soil pH, cation exchange capacity, and enzyme activities. Our ndings may provide a novel perceptive for an eco-friendly and sustainable approach to remediate heavy metal contaminated environment through a combination of metal-resistant ureolytic bacterial strain and EGS.

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Section: Fractionation Of Pb and CD In Soilmentioning

confidence: 99%

Study on the performance of carbonate-mineralized bacteria combined with eggshell for immobilizing Pb and Cd in water and soil

Wei

Yashir

et al. 2021

Environ Sci Pollut Res

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“…For untreated living and dead cells, in Table S3, the peaks observed at 3429. 88, 2923.73, 1647.93, 1544.78, 1236,90, 1069.97, 672.87 (living) and 3413.90, 2921.66, 1643.37, 1540.02, 1245.74, 1054.21 and 633.56 (dead) were assigned to associated O-H, N-H., -CH2, amide I (-C=O/C-N), amide II (C-N/N-H), S 2-, C-N and phosphate, or sulfate functional groups, respectively (Peng et al 2020). The free Cd 2+ could be fixed by the abundant oxygen-containing and amino functional groups via the formation of surface complexation, which could be described:…”

Section: Ftir Analysismentioning

confidence: 99%

Cadmium Resistance, Microbial Biosorptive Performance and Mechanisms of a Novel Biocontrol Bacterium Paenibacillus sp. LYX-1

Luo

Liao

Zhang

et al. 2021

Preprint

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In order to explore whether the newly discovered biocontrol strain Paenibacillus sp., LYX-1 having antagonistic effect on peach brown rot was resistant to Cd2+, a series of growth of strain LYX-1 under different Cd concentration and biosorption experiments were conducted to living and dead strain LYX-1. Meanwhile, the Cd2+ resistance and biosorption mechanisms were further identified by Cd-resistant genes, TEM, SEM-EDS, FTIR and XPS analysis. The results showed that strain LYX-1 could resist 50 mg/L Cd2+ and the adsorption process of both living and dead strain LYX-1 all satisfied the pseudo-second kinetic equation. Under pH 8.0 and at a dose of 1.0 g/L strain, the removal capacities of living and dead cells were as high as 90.39% and 75.67% at 20 mg/L Cd2+, respectively. For the adsorption isotherm test, results revealed that both Langmuir (R2=0.9704) and Freundlich (R2=0.9915) model could describe the Cd2+ biosorption well for living strain LYX-1. The maximum equilibrium biosorption capacities of living and dead biomass were 30.6790 and 24.3752 mg/g, respectively. The adsorption mechanism was controlled by chemisorption with -OH, -NH, -C=O, O=C-O, C-N, S2− and phosphate functional groups on the cell surface of strain LYX-1, which were further identified by XPS. The insignificant biosorption difference of living and dead biomass was caused by CzcD gene in strain LYX-1 detoxifying cadmium through the heavy metal efflux system. The above results indicated that strain LYX-1 had higher tolerance and fixed capacity to Cd2+.

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“…Oyster shell is a low-cost and largely available bio-waste product from oyster farming (Li et al, 2020). Previous studies found that oyster shell as a promising slow-release alkaloid has outstanding effects on pH adjustment and Cd immobilization in soils (Chen et al, 2018b;Peng et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

The cooperative application of oyster shell and biochar efficiently enhanced in-situ remediation of cadmium contaminated soil around intensive industry

Sheng

et al. 2022

Preprint

Self Cite

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Abstract. Biochar has been widely used for the in-situ remediation in the cadmium (Cd) contaminated soil, while the high-cost of biochar limited its application in farmland. In this study, we firstly investigated the possibility of cooperative application of oyster shell and biochar to enhance Cd immobilization efficiency and reduce the cost in field experiments under rice-oilseed rape rotation. Treatments were comprised of: rice planting without amendments (R-PA0); followed with 15000 kg/ha biochar (R-PA1); followed with 15000 kg/ha oyster shell (R-PA2); followed with 7500 kg/ha biochar and 7500 kg/ha oyster shell (R-PA3); rice-oilseed rape rotation without amendments (RT-PA0); rotation with 15000 kg/ha biochar (RT-PA1); rotation with 15000 kg/ha oyster shell (RT-PA2); rotation with 7500 kg/ha biochar and 7500 kg/ha oyster shell (RT-PA3). Results revealed that HOAc-extractable Cd was significantly decreased by 38.46 % in R-PA2. Cd contents in brown rice and oilseed were reduced by 29.67 % in R-PA3 and 19.74 % in RT-PA3 compared with control. Meanwhile, Hazard Quotient of brown rice and oilseed significantly decreased in RT-PA3. The Olsen-P in R-PA3 and RT-PA3 was markedly increased by 187.46 % and 184.73 %, respectively. In addition, activities of urease, catalase, and β-galactosidase in RT-PA3 were significantly increased by 268.88 %, 30.44 % and 245.28 %, respectively. Furthermore, the jiont application of biochar with oyster shell significantly decreased the cost of soil remediation at least 9600 RMB/ha. These results demonstrated that the joint utilization of biochar with oyster shell might be an economical and effective pathway to achieve in-situ remediation of Cd contaminated farmland.

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Performance of microbial induced carbonate precipitation for immobilizing Cd in water and soil

Cited by 110 publications

References 46 publications

Study on the performance of carbonate-mineralized bacteria combined with eggshell for immobilizing Pb and Cd in water and soil

Study on the performance of carbonate-mineralized bacteria combined with eggshell for immobilizing Pb and Cd in water and soil

Cadmium Resistance, Microbial Biosorptive Performance and Mechanisms of a Novel Biocontrol Bacterium Paenibacillus sp. LYX-1

The cooperative application of oyster shell and biochar efficiently enhanced in-situ remediation of cadmium contaminated soil around intensive industry

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