Biodiesel production from marine microalga Chlorella salina using whole cell yeast immobilized on sugarcane bagasse

Surendhiran, Duraiarasan; Mani, Vijay; Sirajunnisa, Abdul Razack

doi:10.1016/j.jece.2014.05.004

Cited by 46 publications

(18 citation statements)

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“…This could be possible because of number of reasons like long exposure to methanol and hexane, conformational changes in lipase, and leaking of whole cell enzyme from the BSPs. Surendhiran et al [24] studied conversion of Chlorella salina lipids using immobilized R. mucilaginosa MTCC8737 yeast as whole cell catalyst. In their study, they reported that immobilized whole cell catalyst can be reused for 10 reaction cycles without much loss in activity.…”

Section: Reusability Of Whole Cell Lipasementioning

confidence: 99%

“…Therefore, step-wise addition of methanol and use of solvent as the reaction medium has been suggested by researchers to overcome this constraint [6,23]. Recently, Surendhiran et al [24] investigated the conversion of Chlorella salina lipids employing Rhodotorula mucilaginosa MTCC8737 yeast as whole cell catalyst immobilized on sugarcane bagasse chips. In their study, with methyl acetate as an acyl acceptor, they observed 85.29% biodiesel yield at optimum conditions.…”

Section: Introductionmentioning

confidence: 99%

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Biodiesel synthesis from microalgae using immobilized Aspergillus niger whole cell lipase biocatalyst

et al. 2016

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a b s t r a c tWhole cell lipase catalysis and microalgal feedstocks make overall biodiesel synthesis greener and sustainable. In this study, a novel approach of whole cell lipase-catalyzed conversion of Scenedesmus obliquus lipids was investigated for biodiesel synthesis. Microalgal biodiesel was characterized for its fuel properties. Optimization of process parameters for immobilized Aspergillus niger whole cell lipasecatalyzed biodiesel synthesis was carried out. Highest biodiesel conversion of 53.76% was achieved from S. obliquus lipids at 35 C, methanol to oil ratio of 5:1 and 2.5% water content based on oil weight with 6 BSPs (Biomass support particles).Step-wise methanol addition was applied to account for methanol tolerance, which improved biodiesel conversion upto 80.97% and gave 90.82 ± 1.43% yield. Immobilized A. niger lipase can be used for 2 batches without significant loss in conversion efficiency. Most of the fuel properties of biodiesel met the specifications set by international standards.

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Section: Reusability Of Whole Cell Lipasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biodiesel synthesis from microalgae using immobilized Aspergillus niger whole cell lipase biocatalyst

et al. 2016

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“…The authors found that the encapsulation of the enzymes limited mass transfer with the result that the immobilised enzyme produced higher FAME yields compared to the encapsulated enzymes. Surendhiran and co-workers [59] used R mucilaginosa immobilised on pretreated sugarcane bagasse as a whole cell biocatalyst for FAME production. The feedstock was Chlorella salina in the presence of methyl acetate in a solvent-free environment.…”

Section: Enzymatic Methods Using Methyl Acetate As Acyl Acceptormentioning

confidence: 99%

Glycerol-free biodiesel production through transesterification: a review

Marx

2016

Fuel Processing Technology

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“…A pesar de los altos rendimientos de conversión de biodiésel usando enzimas comerciales, se considera que la producción enzimática de biodiésel a base de microalgas no es factible debido al elevado costo de los procesos de aislamiento, purificación, inmovilización y a la baja estabilidad de las lipasas en medio etanólico (Ognjanovic et al, 2009), de modo que se ha trabajado en el desarrollo de métodos libres de solventes, lo cual evita riesgos de flamabilidad, toxicidad y reduce el costo por el uso de solventes y procesos de separación, además del desarrollo de soportes para enzimas económicos y biosustentables, que mejoren el rendimiento de producción de biodiésel . Surendhiran et al (2014) desarrollaron un método para la obtención de biodiésel a partir de Chlorella salina inmovilizando la levadura Rhodotorula mucilaginosa (A. Jorg.)…”

Section: Hidrobiológicaunclassified

Biodiesel production from microalgae: progress and biotechnological prospects

et al. 2017

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RESUMENAntecedentes. Las microalgas son una alternativa para la obtención de biodiésel por su alto rendimiento de lípidos y su perfil de ácidos grasos. Objetivos. Hacer una revisión sobre los avances y perspectivas actuales de la producción de biodiésel a partir de microalgas. Métodos. Se realizó una búsqueda actualizada de los trabajos de investigación relacionados con la producción de biodiésel a partir de microalgas, con especial énfasis en la biosíntesis de ácidos grasos y triglicéridos, la producción de biomasa, las técnicas de extracción, los procesos biotecnológicos implementados en sistemas de cultivo, la transesterificación y los sistemas de doble propósito. Resultados. Las microalgas tienen rendimientos altos de producción de lípidos (59 m 3 ha -1 año -1 ), por lo que representa una alternativa para la obtención de biodiésel; sin embargo, el costo de producción y recuperación de biomasa sigue siendo elevado ($5.8 USD Kg -1 ), aunado a los altos requerimientos energéticos (33 MJ Kg -1 ). Actualmente no existen técnicas industriales factibles para la extracción de lípidos y se están probando los métodos por fluidos supercríticos, campo eléctrico de pulso, microondas y ultrasonicación. La biotecnología ha propuesto un novedoso sistema biológico mediante el uso de lipasas recuperadas de hongos filamentosos para el proceso de transesterificación, los cuales ya son comerciales, y ha logrado rendimientos de biocatálisis mayores al 90%. Los "sistema de doble propósito" pueden ser optimizados utilizando un diseño modular que establezca los procesos y operaciones unitarias bien definidas. Conclusiones. El uso de microalgas para la obtención de biodiésel representa una técnica viable gracias a su alto contenido lipídico y a su perfil de ácidos grasos, aunque hace falta el desarrollo de tecnologías que disminuyan el costo de producción. El uso de sistemas de doble propósito se vislumbra como una buena opción para reducir estos precios, al mismo tiempo que se reusan aguas residuales. ABSTRACTBackground. Microalgae have proven to be an excellent alternative to produce biodiesel due of its high lipid yield and its fatty acid profile. Goals. A review was made on the current advances and perspectives on the production of biodiesel from microalgae. Methods. An updated search was done of the research work related to biodiesel production from microalgae, emphasizing fatty acid and triglyceride biosynthesis, biomass production, extraction techniques, biotechnological processes implemented in culture systems, transesterification and dual purpose systems. Results. Microalgae have shown high yields of lipid production (59 m 3 ha -1 year -1 ) representing an alternative to produce biodiesel. However, costs of biomass production and recovery remain high (US $ 5.8 kg -1 ), coupled with high-energy requirements (33 MJ kg-kg -1 ). Supercritical fluids, electric pulse field, microwave and ultra sonication have being tested for lipid extraction, but currently there are no feasible industrial techniques in this field. Biotechnology ha...

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Biodiesel production from marine microalga Chlorella salina using whole cell yeast immobilized on sugarcane bagasse

Cited by 46 publications

References 57 publications

Biodiesel synthesis from microalgae using immobilized Aspergillus niger whole cell lipase biocatalyst

Biodiesel synthesis from microalgae using immobilized Aspergillus niger whole cell lipase biocatalyst

Glycerol-free biodiesel production through transesterification: a review

Biodiesel production from microalgae: progress and biotechnological prospects

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