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Direct transesterification of wet Cryptococcus curvatus cells to biodiesel through use of microwave irradiation

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  • Cui, Yi
  • Liang, Yanna

Abstract

Cryptococcus curvatus is a highly promising oleaginous yeast strain that can accumulate intracellular lipids when grown on renewable carbon sources. In order to convert yeast lipids to biodiesel in a simple but cost-effective way, we aim to react whole yeast cells with methanol to produce biodiesel eliminating the step of drying and lipid extraction while adopting microwave energy for heating and disrupting cell walls. Through use of a screening test followed by response surface methodology, optimal parameters leading to the highest yield of crude biodiesel and FAMEs were identified. Under optimal conditions of reaction time (2min), methanol/biomass ratio (50/1, v/m), stirring speed (966rpm), KOH concentration (5%), and water content (80%), the yield of crude biodiesel (% of total lipids) was 56.1% after the first round reaction. A second round reaction using the residual yeast cells increased the total yield to 92%. Among the crude biodiesel, 63.88% was FAMEs as revealed by GC analysis. Results from this study indicated that it is feasible to produce biodiesel from wet microbial biomass directly without the steps of drying and lipid extraction. With the assistance of microwave, this process can be accomplished in minutes with good process efficiency.

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  • Cui, Yi & Liang, Yanna, 2014. "Direct transesterification of wet Cryptococcus curvatus cells to biodiesel through use of microwave irradiation," Applied Energy, Elsevier, vol. 119(C), pages 438-444.
    • Handle: RePEc:eee:appene:v:119:y:2014:i:c:p:438-444
    DOI: 10.1016/j.apenergy.2014.01.016
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    References listed on IDEAS

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    1. Liang, Yanna & Tang, Tianyu & Umagiliyage, Arosha Loku & Siddaramu, Thara & McCarroll, Matt & Choudhary, Ruplal, 2012. "Utilization of sorghum bagasse hydrolysates for producing microbial lipids," Applied Energy, Elsevier, vol. 91(1), pages 451-458.
    2. Liang, Yanna & Tang, Tianyu & Siddaramu, Thara & Choudhary, Ruplal & Umagiliyage, Arosha Loku, 2012. "Lipid production from sweet sorghum bagasse through yeast fermentation," Renewable Energy, Elsevier, vol. 40(1), pages 130-136.
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    1. Sitepu, Eko K. & Heimann, Kirsten & Raston, Colin L. & Zhang, Wei, 2020. "Critical evaluation of process parameters for direct biodiesel production from diverse feedstock," Renewable and Sustainable Energy Reviews, Elsevier, vol. 123(C).
    2. Bi, Zheting & Zhang, Ji & Zhu, Zeying & Liang, Yanna & Wiltowski, Tomasz, 2018. "Generating biocrude from partially defatted Cryptococcus curvatus yeast residues through catalytic hydrothermal liquefaction," Applied Energy, Elsevier, vol. 209(C), pages 435-444.
    3. Nayak, Sheetal N. & Bhasin, Chandra Prakash & Nayak, Milap G., 2019. "A review on microwave-assisted transesterification processes using various catalytic and non-catalytic systems," Renewable Energy, Elsevier, vol. 143(C), pages 1366-1387.
    4. Carvalho, Ana Karine F. & Bento, Heitor B.S. & Izário Filho, Hélcio J. & de Castro, Heizir F., 2018. "Approaches to convert Mucor circinelloides lipid into biodiesel by enzymatic synthesis assisted by microwave irradiations," Renewable Energy, Elsevier, vol. 125(C), pages 747-754.
    5. Martinez-Guerra, Edith & Gude, Veera Gnaneswar & Mondala, Andro & Holmes, William & Hernandez, Rafael, 2014. "Microwave and ultrasound enhanced extractive-transesterification of algal lipids," Applied Energy, Elsevier, vol. 129(C), pages 354-363.
    6. Stamenković, Olivera S. & Siliveru, Kaliramesh & Veljković, Vlada B. & Banković-Ilić, Ivana B. & Tasić, Marija B. & Ciampitti, Ignacio A. & Đalović, Ivica G. & Mitrović, Petar M. & Sikora, Vladimir Š., 2020. "Production of biofuels from sorghum," Renewable and Sustainable Energy Reviews, Elsevier, vol. 124(C).
    7. Tran, Dang-Thuan & Chang, Jo-Shu & Lee, Duu-Jong, 2017. "Recent insights into continuous-flow biodiesel production via catalytic and non-catalytic transesterification processes," Applied Energy, Elsevier, vol. 185(P1), pages 376-409.
    8. Ling, Jiayin & Nip, Saiwa & de Toledo, Renata Alves & Tian, Yuan & Shim, Hojae, 2016. "Evaluation of specific lipid production and nutrients removal from wastewater by Rhodosporidium toruloides and biodiesel production from wet biomass via microwave irradiation," Energy, Elsevier, vol. 108(C), pages 185-194.
    9. Chukwuma Onumaegbu & Abed Alaswad & Cristina Rodriguez & Abdul G. Olabi, 2018. "Optimization of Pre-Treatment Process Parameters to Generate Biodiesel from Microalga," Energies, MDPI, vol. 11(4), pages 1-16, March.
    10. Fazril Ideris & Mohd Faiz Muaz Ahmad Zamri & Abd Halim Shamsuddin & Saifuddin Nomanbhay & Fitranto Kusumo & Islam Md Rizwanul Fattah & Teuku Meurah Indra Mahlia, 2022. "Progress on Conventional and Advanced Techniques of In Situ Transesterification of Microalgae Lipids for Biodiesel Production," Energies, MDPI, vol. 15(19), pages 1-32, September.
    11. Hoang Chinh Nguyen & Fu-Ming Wang & Kim Khue Dinh & Thanh Truc Pham & Horng-Yi Juan & Nguyen Phuong Nguyen & Hwai Chyuan Ong & Chia-Hung Su, 2020. "Microwave-Assisted Noncatalytic Esterification of Fatty Acid for Biodiesel Production: A Kinetic Study," Energies, MDPI, vol. 13(9), pages 1-15, May.
    12. Metawea, Rodaina & Zewail, Taghreed & El-Ashtoukhy, El-Sayed & El Gheriany, Iman & Hamad, Hesham, 2018. "Process intensification of the transesterification of palm oil to biodiesel in a batch agitated vessel provided with mesh screen extended baffles," Energy, Elsevier, vol. 158(C), pages 111-120.
    13. Onumaegbu, C. & Alaswad, A. & Rodriguez, C. & Olabi, A., 2019. "Modelling and optimization of wet microalgae Scenedesmus quadricauda lipid extraction using microwave pre-treatment method and response surface methodology," Renewable Energy, Elsevier, vol. 132(C), pages 1323-1331.
    14. Savienne M. F. E. Zorn & Ana Paula T. da Silva & Eduardo H. Bredda & Heitor B. S. Bento & Guilherme A. Pedro & Ana Karine F. Carvalho & Messias Borges Silva & Patrícia C. M. Da Rós, 2022. "In Situ Transesterification of Microbial Biomass for Biolubricant Production Catalyzed by Heteropolyacid Supported on Niobium," Energies, MDPI, vol. 15(4), pages 1-12, February.
    15. Katre, Gouri & Raskar, Shubham & Zinjarde, Smita & Ravi Kumar, V. & Kulkarni, B.D. & RaviKumar, Ameeta, 2018. "Optimization of the in situ transesterification step for biodiesel production using biomass of Yarrowia lipolytica NCIM 3589 grown on waste cooking oil," Energy, Elsevier, vol. 142(C), pages 944-952.

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