TY - JOUR
T1 - Immobilization of Lipase on Metal-Organic frameworks for biodiesel production
AU - Shomal, Reem
AU - Du, Wei
AU - Al-Zuhair, Sulaiman
N1 - Funding Information:
The authors express their gratitude for the support from the Joint Research Program between UAE University, UAE and Institutions of Asian Universities Alliance (AUA) (UAEU-AUA Fund number 31R167). The gratitude is also extended to the Center for Advanced Materials Research, University of Sharjah, Sharjah P.O. Box 27272, the United Arab Emirates for their invaluable assistance in characterization.
Funding Information:
The authors express their gratitude for the support from the Joint Research Program between UAE University , UAE and Institutions of Asian Universities Alliance (AUA) (UAEU-AUA Fund number 31R167 ). The gratitude is also extended to the Center for Advanced Materials Research, University of Sharjah, Sharjah P.O. Box 27272, the United Arab Emirates for their invaluable assistance in characterization.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/4
Y1 - 2022/4
N2 - A comprehensive study on lipase immobilization on ZIF-67, ZIF-8, and HKUST-1 and their use in biodiesel production were performed. The highest adsorption capacity of 26.9 mg/g was achieved using ZIF-67 at 45 °C and an initial protein concentration of 0.6 mg/mL. Adsorption equilibrium data suggested that lipase adsorbed physically on ZIF-67 and ZIF-8 and chemically of HKUST-1. The data were best fitted with the Langmuir isotherm model for the three supports. Whereas, adsorption kinetics data were best fitted using Elovish's model for ZIF-67 and ZIF-8, and the pseudo-second-order model for HKUST-1. It was also found that the process was influenced by intraparticle and film diffusion. The prepared bio-catalyst was successfully used to catalyze biodiesel production in a co-solvent medium. The ZIF-8 and ZIF-67 showed better catalytic activity, achieving 88% and 90% conversion, whereas HKUST-1 showed better reusability due to the stronger chemical adoption. In addition, diffusion-reaction kinetics of biodiesel production using adsorbed lipase on ZIF-8 have been analysed. The investigation provided an insight into adsorption pathways and probable mechanisms involved and a better understanding of their application in biodiesel production. Mathematical diffusion-reaction modeling of lipase-MOFs biocatalyst used in biodiesel production, similar to the one presented in this work, is not found in literature.
AB - A comprehensive study on lipase immobilization on ZIF-67, ZIF-8, and HKUST-1 and their use in biodiesel production were performed. The highest adsorption capacity of 26.9 mg/g was achieved using ZIF-67 at 45 °C and an initial protein concentration of 0.6 mg/mL. Adsorption equilibrium data suggested that lipase adsorbed physically on ZIF-67 and ZIF-8 and chemically of HKUST-1. The data were best fitted with the Langmuir isotherm model for the three supports. Whereas, adsorption kinetics data were best fitted using Elovish's model for ZIF-67 and ZIF-8, and the pseudo-second-order model for HKUST-1. It was also found that the process was influenced by intraparticle and film diffusion. The prepared bio-catalyst was successfully used to catalyze biodiesel production in a co-solvent medium. The ZIF-8 and ZIF-67 showed better catalytic activity, achieving 88% and 90% conversion, whereas HKUST-1 showed better reusability due to the stronger chemical adoption. In addition, diffusion-reaction kinetics of biodiesel production using adsorbed lipase on ZIF-8 have been analysed. The investigation provided an insight into adsorption pathways and probable mechanisms involved and a better understanding of their application in biodiesel production. Mathematical diffusion-reaction modeling of lipase-MOFs biocatalyst used in biodiesel production, similar to the one presented in this work, is not found in literature.
KW - Adsorption
KW - Biodiesel
KW - Lipase
KW - Metal-organic frameworks
KW - Thermodynamic
KW - Zeolitic Imidazolate frameworks
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U2 - 10.1016/j.jece.2022.107265
DO - 10.1016/j.jece.2022.107265
M3 - Article
AN - SCOPUS:85123729347
SN - 2213-2929
VL - 10
JO - Journal of Environmental Chemical Engineering
JF - Journal of Environmental Chemical Engineering
IS - 2
M1 - 107265
ER -