Enzymatic biodiesel production: Technical and economical considerations

Nielsen, Per Henning; Brask, Jesper; Fjerbæk, Lene

doi:10.1002/ejlt.200800064

Cited by 229 publications

(139 citation statements)

References 42 publications

Supporting

Mentioning

124

Contrasting

Unclassified

Order By: Relevance

“…The main studies focus on the relationship between the enzymatic production of biodiesel and the productivity of the biofuel manufacturing process (Nielsen et al, 2008). Table 4 presents a summary of the applications and yields of the seed lipases mentioned above.…”

Section: Biodieselmentioning

confidence: 99%

Seed lipases: sources, applications and properties - a review

Barros

Fleuri

Macêdo

2010

Braz. J. Chem. Eng.

173

100

View full text Add to dashboard Cite

-This paper provides an overview regarding the main aspects of seed lipases, such as the reactions catalyzed, physiological functions, specificities, sources and applications. Lipases are ubiquitous in nature and are produced by several plants, animals and microorganisms. These enzymes exhibit several very interesting features, such as low cost and easy purification, which make their commercial exploitation as industrial enzymes a potentially attractive alternative. The applications of lipases in food, detergents, oils and fats, medicines and fine chemistry, effluent treatment, biodiesel production and in the cellulose pulp industry, as well as the main sources of oilseed and cereal seed lipases, are reviewed.

show abstract

Section: Biodieselmentioning

confidence: 99%

Seed lipases: sources, applications and properties - a review

Barros

Fleuri

Macêdo

2010

Braz. J. Chem. Eng.

173

100

View full text Add to dashboard Cite

show abstract

“…It requires less energy and is also highly selective producing a very high purity product with less downstream operations (Xu et al 2011, Akoh et al 2007, Nielsen et al 2008. If the biocatalyst is to be reused, one challenge is mitigating the effects of inhibition and deactivation of the enzyme by the methanol substrate.…”

Section: Introductionmentioning

confidence: 99%

Fed-Batch Feeding Strategies for Enzymatic Biodiesel Production

Price

Nordblad

Woodley

et al. 2014

IFAC Proceedings Volumes

View full text Add to dashboard Cite

Abstract:In this work a kinetic model for the enzymatic transesterification of rapeseed oil using a solubilised lipase (Callera Trans L-Thermomyces lanuginosus) was developed from first principles. The model is based on a Ping-Pong Bi-Bi mechanism, with methanol inhibition, along with consideration of the differences in the interfacial and bulk concentrations of the enzyme. The model is then used to evaluate various feeding strategies to improve the enzymatic biodiesel production. The feeding strategies investigated, gave insight into how the methanol should be fed to potentially mitigate enzyme deactivation while improving the biodiesel yield. The best experimental results gave a yield of 703.76 g FAME L -1 and a reactor productivity of 28.12 g FAME L -1 h -1 . In comparison, to reach the same yield, the optimised two step feeding strategy took 6.25 hours less, which equates to an increase the reactor productivity of 36.9 %.

show abstract

“…The main problem for using soluble enzymes lies in fact that they are usually delivered in stabilized water solutions (with added preservative for the inhibition of microbial growth, e.g., benzoate and with stabilizer to prevent enzyme denaturation e.g. glycerol or sorbitol) (50). As already mentioned, water is a chemical contaminant in transesterification reaction.…”

Section: Enzymatic Catalytic Transesterificationmentioning

confidence: 99%

“…Several reports on successful application of these two immobilization methods for biodiesel production could be found in literature (48,(59)(60)(61)(62)(63). However, immobilized enzymes are much more expensive than free enzymes (50).…”

mentioning

confidence: 99%

Recent Trends in Biodiesel and Biogas Production

Bušić

Kundas

Morzak

et al. 2018

Food Technol. Biotechnol.

View full text Add to dashboard Cite

SummaryBiodiesel and biogas are two very important sources of renewable energy worldwide, and particularly in EU countries. While biodiesel is almost exclusively used as transportation fuel, biogas is mostly used for production of electricity and heat. The application of more sophisticated purification techniques in production of pure biomethane from biogas allows its delivery to natural gas grid and its subsequent use as transportation fuel. While biogas is produced mostly from waste materials (landfills, manure, sludge from wastewater treatment, agricultural waste), biodiesel in EU is mostly produced from rapeseed or other oil crops that are used as food. This raises the 'food or fuel' concerns. To mitigate this problem considerable efforts have been done to use non-food feedstock for biodiesel production. These include all kinds of waste oils and fats, but recently more attention has been devoted to production of microbial oils by cultivation of microorganisms that are able to accumulate high amounts of lipids in their biomass. Promising candidates for microbial lipids production can be found www.ftb.com.hrPlease note that this is an unedited version of the manuscript that has been accepted for publication. This version will undergo copyediting and typesetting before its final form for publication. We are providing this version as a service to our readers. The published version will differ from this one as a result of linguistic and technical corrections and layout editing.2 among different strains of filamentous fungi, yeast, bacteria and microalgae. Feedstocks of interest are agricultural waste rich in carbohydrates as well as different lignocellulosic raw materials where some technical issues have to be resolved. In this work, recovery and purification of biodiesel and biogas were also considered.

show abstract

Enzymatic biodiesel production: Technical and economical considerations

Cited by 229 publications

References 42 publications

Seed lipases: sources, applications and properties - a review

Seed lipases: sources, applications and properties - a review

Fed-Batch Feeding Strategies for Enzymatic Biodiesel Production

Recent Trends in Biodiesel and Biogas Production

Contact Info

Product

Resources

About