Using NaOH@Graphene oxide-Fe3O4 as a magnetic heterogeneous catalyst for ultrasonic transesterification; experimental and modelling

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: June 22, 2024

Abstract Burning fossil fuels causes toxic gas emissions to increase, therefore, scientists are trying find alternative green fuels. One of the important is biodiesel. However, using eco-friendly primary materials a main factor. Sustainable catalysts should have high performance, good activity, easy separation from reaction cells, and regenerability. In this study, solve mentioned problem NaOH@Graphene oxide-Fe 3 O 4 as magnetic catalyst was used for first time generate biodiesel waste cooking oil. The crystal structure, functional groups, surface area morphology were studied by XRD, FTIR, BET, FESEM techniques. response methodology based central composite design (RSM-CCD) production via ultrasonic technique. maximum yield 95.88% in following operation: 10.52:1 molar ratio methanol oil, weight 3.76 wt%, voltage 49.58 kHz, 33.29 min. physiochemical characterization ASTM standard. standstill free fatty acid due five cycle’s regeneration. kinetic study results possess agreement with first-order kinetics well activation energy Arrhenius constant 49.2 kJ/min 16.47 * 10 min −1 , respectively.

Language: Английский

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Cellulose Nanocrystal-Immobilized Lipase for Pickering Interface Biocatalysis

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

Enzymes are promising biocatalysts due to their high efficiency, mild conditions, specificity, nontoxicity, and environmental friendliness. However, the enzyme suffers from poor stability reusability. Enzyme immobilization is a commonly used technology enhance its In this study, cellulose nanocrystal (CNC) was chosen as carrier sustainability, specific surface area, biocompatibility, water dispersibility, excellent Pickering emulsifying ability. Lipase immobilized on polydopamine-coated CNC (PC), obtained lipase-immobilized PC (LPC) displayed significantly enhanced higher activity in harsh conditions compared free lipase. LPC possessed partial wettability with both oil phases lower absolute value of zeta potential than CNC, endowing it better ability CNC. fixed at oil–water interface emulsion by ultrasonication, resulting droplets were employed microreactors for ester hydrolysis synthesis via biocatalysis. catalysis lipase traditional biphasic system increased contact area between substrate, reduced diffusion distance activation effect. Moreover, could be facilely recycled centrifugation, still retains activity. This study proposed facile sustainable method reusability achieved

Language: Английский

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Catalyzing Transformation: Organo-Inorganic Materials Based Immobilized Lipases in the Ongoing Quest for Sustainable Biodiesel Production

Topics in Catalysis, Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 26, 2024

Language: Английский

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Controlled and rapid microreactor-assisted hydrolysis of sesame protein by a novel nanobiocatalyst; immobilized alcalase over activated sol–gel magnetic nanosupport

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 153900 - 153900

Published: July 10, 2024

Language: Английский

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A Comprehensive Review of the Impact of Nano-Catalysts on Biodiesel Production

Journal of Biosystems Engineering, Journal Year: 2024, Volume and Issue: 49(3), P. 277 - 290

Published: Sept. 1, 2024

Language: Английский

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