Development of Nano Mullite Based Mesoporous Silica Biocer With Incorporated Bacteria for Arsenic Remediation

Kar, S.; Nandy, Papiya; Basu, Ruma; Das, Sukhen

doi:10.13168/cs.2016.0030

Cited by 4 publications

(4 citation statements)

References 14 publications

(15 reference statements)

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“…Immobilization of the biomaterial in ceramic coatings based on aluminosilicates [ 21 ] or in silicagels based on silicon dioxide [ 71 , 90 ] allows not only preservation of the catalytic activity of the biocomponent but also acquisition of a strong and time-stable biocomposite structure. Immobilization of phenol-decomposing bacteria Rhodococcus ruber into aluminosilicates enables bioceramics with durability of more than half a year to be obtained [ 21 ].…”

Section: Classification Of Hybrid Materials According To the Type Of ...mentioning

confidence: 99%

“…The mesoporous silica matrix reinforced with nanomullite was effectively used for biomaterial immobilization to preserve the long-term viability and enzymatic activity of the biocomponent. In this case, arsenic was efficiently removed by the bacterium Ralstonia eutropha MTCC 2487 [ 90 ], which remained viable in the obtained matrix for up to 120 days. Such biosensors and biofilters have great potential for monitoring heavy metal toxicity.…”

Section: Classification Of Hybrid Materials According To the Applicat...mentioning

confidence: 99%

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Preparation of Hybrid Sol-Gel Materials Based on Living Cells of Microorganisms and Their Application in Nanotechnology

et al. 2022

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Microorganism-cell-based biohybrid materials have attracted considerable attention over the last several decades. They are applied in a broad spectrum of areas, such as nanotechnologies, environmental biotechnology, biomedicine, synthetic chemistry, and bioelectronics. Sol-gel technology allows us to obtain a wide range of high-purity materials from nanopowders to thin-film coatings with high efficiency and low cost, which makes it one of the preferred techniques for creating organic-inorganic matrices for biocomponent immobilization. This review focuses on the synthesis and application of hybrid sol-gel materials obtained by encapsulation of microorganism cells in an inorganic matrix based on silicon, aluminum, and transition metals. The type of immobilized cells, precursors used, types of nanomaterials obtained, and their practical applications were analyzed in detail. In addition, techniques for increasing the microorganism effective time of functioning and the possibility of using sol-gel hybrid materials in catalysis are discussed.

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Section: Classification Of Hybrid Materials According To the Type Of ...mentioning

confidence: 99%

Section: Classification Of Hybrid Materials According To the Applicat...mentioning

confidence: 99%

Preparation of Hybrid Sol-Gel Materials Based on Living Cells of Microorganisms and Their Application in Nanotechnology

et al. 2022

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“…Cells coated with a protective shell or embedded in an inorganic matrix become stable “living materials” − and can serve as promising biocatalysts, meeting the demands of ecological applications. Moreover, these cells can be employed in the development of bioreactors, , biosensors, ,,, biopreparations for the degradation of toxic compounds, ,, implants, , and biofuel cells. , Microorganisms exhibit the ability to consume and oxidize a wide range of organic substances, enabling the detection and purification of lower alcohols, saccharides, amino acids, and other organic pollutants in water bodies. Their metabolic activity makes microorganisms indispensable components in the development of simple and environmentally friendly methods for monitoring the environment.…”

Section: Introductionmentioning

confidence: 99%

“3-in-1” Hybrid Biocatalysts: Association of Yeast Cells Immobilized in a Sol–Gel Matrix for Determining Sewage Pollution

Kamanina,

Lantsova,

Rybochkin

et al. 2023

ACS Appl. Mater. Interfaces

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This study presents a novel ″3-in-1″ hybrid biocatalyst design that combines the individual efficiency of microorganisms while avoiding negative interactions between them. Yeast cells of Ogataea polymorpha VKM Y-2559, Blastobotrys adeninivorans VKM Y-2677, and Debaryomyces hansenii VKM Y-2482 were immobilized in an organosilicon material by using the sol–gel method, resulting in a hybrid biocatalyst. The catalytic activity of the immobilized microorganism mixture was evaluated by employing it as the bioreceptor element of a biosensor. Optical and scanning electron microscopies were used to examine the morphology of the biohybrid material. Elemental distribution analysis confirmed the encapsulation of yeast cells in a matrix composed of methyltriethoxysilane (MTES) and tetraethoxysilane (TEOS) (85 and 15 vol %, respectively). The resulting heterogeneous biocatalyst exhibited excellent performance in determining the biochemical oxygen demand (BOD) index in real surface water samples, with a sensitivity coefficient of 50 ± 3 × 10–3·min–1, a concentration range of 0.3–31 mg/L, long-term stability for 25 days, and a relative standard deviation of 3.8%. These findings demonstrate the potential of the developed hybrid biocatalyst for effective pollution monitoring and wastewater treatment applications.

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“…Many research have been conducted on heavy metal immobilization in order to handle this sort of hazardous pollution. Minarikova and Skavara [3] used geopolymer made of fly ash to immobilize 0.5% Cd 2+ . Their samples were cured at 80 o C and after 7 days attained 20 MPa compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Cd2+ and Cr3+ Cation Immobilization by Using Geopolymer Based on PT. IPMOMI Fly Ash

Fansuri

Anisatun

Fatmawati

et al. 2016

MSF

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This study investigates the immobilization of Cd2+ and Cr3+ by using geopolymer paste based on PT. IPMOMI fly ash. The best composition of geopolimers paste was determined based on the highest magnitude of its 7 days compressive strength. Geopolymer pastes were prepared by varying SiO2/Al2O3 and Na2O/SiO2 molar ratio of the starting materials. X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM) were employed to examined these compositions. The molar ratio of SiO2/Al2O3 6.46 was found to produce the highest compressive strength of the resulting geopolymer paste, i.e 25 MPa and increased to 33.17 MPa by adjusting the ratio of Na2O/SiO2 to 0.65. Cd2+ and Cr3+ cations were added into geopolymers resin at the level of 1000 – 16000 ppm (mg/kg fly ash) and it was found to improve their compressive strength. The addition of 4000 ppm of Cd2+ increased the compressive strength to 38.6 MPa while the inclusion of 6800 ppm of Cr3+ reached 47.83 MPa. Further addition of cations reduced these values and the lowest compressive strength was observed on the addition of 16000 ppm of Cd2+ and Cr3+, i.e 8.65 MPa and 4.39 MPa, respectively. Leaching test was conducted by using Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) and the distribution of heavy metal cations were examined by using SEM-EDX. The results showed that geopolymer pastes were able to immobilize Cr3+ at the studied level as there was no trace of Cr3+ detected after 6.5 hours of leaching. Geopolymer pastes were also found to completely immobilize Cd2+ at the level of 1000 ppm albeit the addition of 16000 ppm results in 6.26% leached out of this cation.

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Development of Nano Mullite Based Mesoporous Silica Biocer With Incorporated Bacteria for Arsenic Remediation

Cited by 4 publications

References 14 publications

Preparation of Hybrid Sol-Gel Materials Based on Living Cells of Microorganisms and Their Application in Nanotechnology

Preparation of Hybrid Sol-Gel Materials Based on Living Cells of Microorganisms and Their Application in Nanotechnology

“3-in-1” Hybrid Biocatalysts: Association of Yeast Cells Immobilized in a Sol–Gel Matrix for Determining Sewage Pollution

Cd<sup>2</sup><sup>+ </sup>and Cr<sup>3+</sup> Cation Immobilization by Using Geopolymer Based on PT. IPMOMI Fly Ash

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