Biodiesel production by various oleaginous microorganisms from organic wastes

The present study investigates the different approaches of biodiesel production by exploiting low cost feedstocks such as organic wastes of frying oils (WFO) and wastes of beef fats (WBF). The aim was to compare not only two different sources of waste raw materials but also different approaches of biodiesel production. Biodiesel which refers to fatty acid methyl esters (FAME) was produced by both chemical and enzymatic transesterification. The characterization of the biodiesel produced by both approaches was performed according to the European standard EN 14214. The results showed that the biological method gave a richer FAME biodiesel through the catalysis of whole-cell lipase. However, for the chemical method, better biodiesel physicochemical properties were observed for the two raw materials. Therefore, it would be interesting to compromise by optimizing the biological biodiesel production approach in order to obtain a better quality in coherence with EN 14214 requirements.

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Conversion of Solid Organic Wastes into Oil via Boettcherisca peregrine (Diptera: Sarcophagidae) Larvae and Optimization of Parameters for Biodiesel Production

PLoS ONE ◽

10.1371/journal.pone.0045940 ◽

2012 ◽

Vol 7 (9) ◽

pp. e45940 ◽

Cited By ~ 14

Author(s):

Sen Yang ◽

Qing Li ◽

Qinglan Zeng ◽

Jibin Zhang ◽

Ziniu Yu ◽

...

Keyword(s):

Organic Wastes ◽

Biodiesel Production ◽

Optimization Of Parameters

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Reproductive Potential and Nutritional Composition of Hermetia illucens (Diptera: Stratiomyidae) Prepupae Reared on Different Organic Wastes

Journal of Economic Entomology ◽

10.1093/jee/toz296 ◽

2019 ◽

Vol 113 (1) ◽

pp. 527-537 ◽

Cited By ~ 3

Author(s):

Sheng Yin Wang ◽

Lingli Wu ◽

Baoling Li ◽

Dayu Zhang

Keyword(s):

Food Waste ◽

Reproductive Potential ◽

Organic Wastes ◽

Nutrient Composition ◽

Biodiesel Production ◽

Chicken Manure ◽

Intrinsic Rate Of Increase ◽

Pig Manure ◽

Cow Dung ◽

Hermetia Illucens

Abstract Hermetia illucens L. (the black soldier fly) has received increased attention because of its great potential in converting organic waste into a renewable resource. The prepupae have high proportions of proteins and fats and can serve as feedstuff for livestock and as feedstock for biodiesel production. With the goal to upgrade the conversion of low-value organic wastes into high-value proteins and fat on a large scale, the effects of the feedstuffs food waste, pig manure, chicken manure, and cow dung on the reproductive potential and nutrient composition of H. illucens were evaluated. The intrinsic rate of increase of H. illucens fed food waste (0.1249 d−1) was significantly greater than the rate of those fed pig manure (0.1167 d−1), chicken manure (0.1154 d−1), and cow dung (0.1049 d−1). The ash content of H. illucens fed food waste (30.8 g·kg−1 lyophilized prepupa matter (LPM)) was significantly lower than that of those fed chicken manure (37.6 g·kg−1 LPM) and cow dung (49.5 g·kg−1 LPM). The contents of crude fat, 372.4 g·kg−1 LPM, and protein, 436.9 g·kg−1 LPM, in prepupae fed food waste were the highest among the four treatments. The reproductive performance and prepupal nutrient composition indicated that food waste was the most suitable feed for H. illucens. The results from this study further demonstrate that the prepupae of H. illucens have great potential for use as a protein and fat source in animal feeds and as biodiesel material.

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An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

Microorganisms ◽

10.3390/microorganisms8030434 ◽

2020 ◽

Vol 8 (3) ◽

pp. 434 ◽

Cited By ~ 11

Author(s):

Alok Patel ◽

Dimitra Karageorgou ◽

Emma Rova ◽

Petros Katapodis ◽

Ulrika Rova ◽

...

Keyword(s):

Fatty Acids ◽

Fatty Acid ◽

Dry Weight ◽

Downstream Processing ◽

Biodiesel Production ◽

Omega 3 Fatty Acids ◽

Omega 3 ◽

Oleaginous Microorganisms ◽

Chain Pufa ◽

Natural Oil

Microorganisms are known to be natural oil producers in their cellular compartments. Microorganisms that accumulate more than 20% w/w of lipids on a cell dry weight basis are considered as oleaginous microorganisms. These are capable of synthesizing vast majority of fatty acids from short hydrocarbonated chain (C6) to long hydrocarbonated chain (C36), which may be saturated (SFA), monounsaturated (MUFA), or polyunsaturated fatty acids (PUFA), depending on the presence and number of double bonds in hydrocarbonated chains. Depending on the fatty acid profile, the oils obtained from oleaginous microorganisms are utilized as feedstock for either biodiesel production or as nutraceuticals. Mainly microalgae, bacteria, and yeasts are involved in the production of biodiesel, whereas thraustochytrids, fungi, and some of the microalgae are well known to be producers of very long-chain PUFA (omega-3 fatty acids). In this review article, the type of oleaginous microorganisms and their expertise in the field of biodiesel or omega-3 fatty acids, advances in metabolic engineering tools for enhanced lipid accumulation, upstream and downstream processing of lipids, including purification of biodiesel and concentration of omega-3 fatty acids are reviewed.

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