Next Article in Journal
Nickel-Modified TS-1 Catalyzed the Ammoximation of Methyl Ethyl Ketone
Previous Article in Journal
Enzymatically Produced Trimethylamine N-Oxide: Conserving It or Eliminating It
Open AccessArticle

Silica Nanoflowers-Stabilized Pickering Emulsion as a Robust Biocatalysis Platform for Enzymatic Production of Biodiesel

by Lihui Wang 1,2,†, Xinlong Liu 2,†, Yanjun Jiang 1, Peng Liu 2, Liya Zhou 1, Li Ma 1, Ying He 1, Heyu Li 3 and Jing Gao 1,*
1
School of Chemical Engineering, Hebei University of Technology, No. 8 Guangrong Road, Hongqiao District, Tianjin 300130, China
2
Department of Biochemical Engineering, Tianjin Modern Vocational Technology College, No. 3 Yaguan Road, Jinnan District, Tianjin 300350, China
3
Tianjin Ubasio Biotechnology Group Co., Ltd., Tianjin 300457, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Catalysts 2019, 9(12), 1026; https://doi.org/10.3390/catal9121026
Received: 15 October 2019 / Revised: 26 November 2019 / Accepted: 30 November 2019 / Published: 4 December 2019
Enzymatic production of biodiesel had attracted much attention due to its high efficiency, mild conditions and environmental protection. However, the high cost of enzyme, poor solubility of methanol in oil and adsorption of glycerol onto the enzyme limited the popularization of the process. To address these problems, we developed a silica nanoflowers-stabilized Pickering emulsion as a biocatalysis platform with Candida antarctica lipase B (CALB) as model lipase for biodiesel production. Silica nanoflowers (SNFs) were synthesized in microemulsion and served as a carrier for CALB immobilization and then used as an emulsifier for constructing Pickering emulsion. The structure of SNFs and the biocatalytic Pickering emulsion ([email protected]) were characterized in detail. Experimental data about the methanolysis of waste oil to biodiesel was evaluated by response surface methodology. The highest experimental yield of 98.5 ± 0.5% was obtained under the optimized conditions: methanol/oil ratio of 2.63:1, a temperature of 45.97 °C, [email protected] dosage of 33.24 mg and time of 8.11 h, which was closed to the predicted value (100.00%). Reusability test showed that [email protected] could retain 76.68% of its initial biodiesel yield after 15 cycles, which was better than that of free CALB and N435.
Keywords: pickering emulsion; silica nanoflowers; biodiesel; response surface methodology pickering emulsion; silica nanoflowers; biodiesel; response surface methodology
MDPI and ACS Style

Wang, L.; Liu, X.; Jiang, Y.; Liu, P.; Zhou, L.; Ma, L.; He, Y.; Li, H.; Gao, J. Silica Nanoflowers-Stabilized Pickering Emulsion as a Robust Biocatalysis Platform for Enzymatic Production of Biodiesel. Catalysts 2019, 9, 1026.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop