Adsorption Kinetics of Cellulase and Xylanase Immobilized on Magnetic Mesoporous Silica

Sulaiman, Nurul Jannah; Mansor, Azmi Fadziyana; Rahman, Roshanida A.; Illias, Rosli Md.; Shaarani, Shalyda Md

doi:10.1002/ceat.201800657

Cited by 18 publications

(9 citation statements)

References 47 publications

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“…To investigate the adsorption mechanism of SO 2 on TAIL/SiO 2 , several kinetic models were used to fit the experimental data. Commonly used kinetic models include the pseudo-first-order kinetic, pseudo-second-order kinetic, Elovich kinetic, and Bangham rate models. − …”

Section: Methodsmentioning

confidence: 99%

“…Commonly used kinetic models include the pseudo-first-order kinetic, pseudo-second-order kinetic, Elovich kinetic, and Bangham rate models. 37 − 41 …”

Section: Methodsmentioning

confidence: 99%

“…If the data are consistent with that of the Elovich kinetic model, the reaction rate decreases exponentially with increasing surface adsorption. 37 Bangham rate model, eq 7 q q (1 e )…”

Section: Kinetic Model Developmentmentioning

confidence: 99%

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SO₂ Adsorption and Kinetics Analysis during Supported Triethanolamine Acetate Ionic Liquid Desulfurization

et al. 2022

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Ionic liquid desulfurization is an effective method for achieving green and circulating desulfurization. To overcome the negative impact of the high viscosity of ionic liquids on the desulfurization process, an economical and efficient supported ionic liquidtriethanolamine acetate ionic liquid/silica (TAIL/SiO2) was prepared in this study. TAIL is synthesized using triethanolamine and acetic acid and subsequently loaded onto silica gel particles. The effects of the reaction temperature, humidity, silica particle size, and loading ratio on SO2 adsorption are investigated using a fixed-bed reactor. The results indicate that the surface of the silica gel loaded with ionic liquid formed uneven spherical clusters, and the aggregate volume increased with an increase in the loading ratio. The TAIL/SiO2 sulfur capacity could be effectively increased by increasing the loading ratio (exceeding 0.74 is unfavorable), decreasing the silica particle size, and reducing the reaction temperature and moisture content. The maximum sulfur capacity can reach 124.98 mg SO2/(g TAIL/SiO2) under experimental conditions, which is higher than that of activated carbon. The Bangham rate model effectively predicts the kinetics of the adsorption process of SO2.

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Section: Methodsmentioning

confidence: 99%

“…Commonly used kinetic models include the pseudo-first-order kinetic, pseudo-second-order kinetic, Elovich kinetic, and Bangham rate models. 37 − 41 …”

Section: Methodsmentioning

confidence: 99%

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SO₂ Adsorption and Kinetics Analysis during Supported Triethanolamine Acetate Ionic Liquid Desulfurization

et al. 2022

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“…For better protection of iron oxide NPs, Poorakbar et al used a gold shell around magnetic NPs followed by the silica shell and functionalization with PEG and L-aspartic acid for a covalent cellulase attachment [ 110 ]. The other avenue for a magnetic nanobiocatalyst synthesis is realized when magnetic NPs are embedded into porous or polymer materials [ 111 , 112 ]. Even bare magnetite NPs have been utilized for adsorption of cellulase [ 113 ] or after functionalization with glutaraldehyde [ 114 ].…”

Section: Types Of Nanostructured Supportsmentioning

confidence: 99%

Cellulase Immobilization on Nanostructured Supports for Biomass Waste Processing

2022

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Nanobiocatalysts, i.e., enzymes immobilized on nanostructured supports, received considerable attention because they are potential remedies to overcome shortcomings of traditional biocatalysts, such as low efficiency of mass transfer, instability during catalytic reactions, and possible deactivation. In this short review, we will analyze major aspects of immobilization of cellulase—an enzyme for cellulosic biomass waste processing—on nanostructured supports. Such supports provide high surface areas, increased enzyme loading, and a beneficial environment to enhance cellulase performance and its stability, leading to nanobiocatalysts for obtaining biofuels and value-added chemicals. Here, we will discuss such nanostructured supports as carbon nanotubes, polymer nanoparticles (NPs), nanohydrogels, nanofibers, silica NPs, hierarchical porous materials, magnetic NPs and their nanohybrids, based on publications of the last five years. The use of magnetic NPs is especially favorable due to easy separation and the nanobiocatalyst recovery for a repeated use. This review will discuss methods for cellulase immobilization, morphology of nanostructured supports, multienzyme systems as well as factors influencing the enzyme activity to achieve the highest conversion of cellulosic biowaste into fermentable sugars. We believe this review will allow for an enhanced understanding of such nanobiocatalysts and processes, allowing for the best solutions to major problems of sustainable biorefinery.

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“…So far, only a few studies have been carried out on the immobilization of cellulase in this kind of material. Sulaiman et al [151] studied the adsorption kinetics of cellulase and xylanase immobilized on magnetically separable, hierarchically ordered mesocellular mesoporous silica, while Lee et al used cellulase immobilized on Fe 3 O 4 loaded mesoporous silica nanoparticles in cascading cellulose-glucose-fructose [152] and fructose-5-hydroxymethylfurfural (HMF) [153] conversion. HMF is a versatile platform for biofuel production.…”

Section: Immobilization Of Cellulase On Mesostructured Silicamentioning

confidence: 99%

Immobilization of Cellulolytic Enzymes in Mesostructured Silica Materials

Califano

Costantini

2020

Catalysts

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Mesostructured silica nanoparticles offer a unique opportunity in the field of biocatalysis thanks to their outstanding properties. The tunable pore size in the range of mesopores allows for immobilizing bulky enzyme molecules. The large surface area improves the catalytic efficiency by increasing enzyme loading and finely dispersing the biocatalyst molecules. The easily tunable pore morphology allows for creating a proper environment to host an enzyme. The confining effect of mesopores can improve the enzyme stability and its resistance to extreme pH and temperatures. Benefits also arise from other peculiarities of nanoparticles such as Brownian motion and easy dispersion. Fossil fuel depletion and environmental pollution have led to the need for alternative sustainable and renewable energy sources such as biofuels. In this context, lignocellulosic biomass has been considered as a strategic fuel source. Cellulases are a class of hydrolytic enzymes that convert cellulose into fermentable sugars. This review is intended to survey the immobilization of cellulolytic enzymes (cellulases and β-glucosidase) onto mesoporous silica nanoparticles and their catalytic performance, with the aim to give a contribution to the urgent action required against climate change and its impacts, by biorefineries’ development.

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Adsorption Kinetics of Cellulase and Xylanase Immobilized on Magnetic Mesoporous Silica

Cited by 18 publications

References 47 publications

SO₂ Adsorption and Kinetics Analysis during Supported Triethanolamine Acetate Ionic Liquid Desulfurization

SO₂ Adsorption and Kinetics Analysis during Supported Triethanolamine Acetate Ionic Liquid Desulfurization

Cellulase Immobilization on Nanostructured Supports for Biomass Waste Processing

Immobilization of Cellulolytic Enzymes in Mesostructured Silica Materials

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Adsorption Kinetics of Cellulase and Xylanase Immobilized on Magnetic Mesoporous Silica

Cited by 18 publications

References 47 publications

SO2 Adsorption and Kinetics Analysis during Supported Triethanolamine Acetate Ionic Liquid Desulfurization

SO2 Adsorption and Kinetics Analysis during Supported Triethanolamine Acetate Ionic Liquid Desulfurization

Cellulase Immobilization on Nanostructured Supports for Biomass Waste Processing

Immobilization of Cellulolytic Enzymes in Mesostructured Silica Materials

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Product

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SO₂ Adsorption and Kinetics Analysis during Supported Triethanolamine Acetate Ionic Liquid Desulfurization

SO₂ Adsorption and Kinetics Analysis during Supported Triethanolamine Acetate Ionic Liquid Desulfurization