scholarly journals The usability evaluation of domestic urban sewage sludge as feedstock for biodiesel production( I ) - Comparison of the yields and composition of fatty acid methyl esters -

2012 ◽  
Vol 26 (1) ◽  
pp. 115-121
Author(s):  
Nack-Joo Kim ◽  
You-Won Jung ◽  
Ik-Soo Lee
Keyword(s):  
Fatty Acid ◽  
Sewage Sludge ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Usability Evaluation ◽  
Biodiesel Production ◽  
Urban Sewage ◽  
Acid Methyl ◽  
Urban Sewage Sludge

scholarly journals Trends in Widely Used Catalysts for Fatty Acid Methyl Esters (FAME) Production: A Review

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1085
Author(s):  
Shafaq Nisar ◽  
Muhammad Asif Hanif ◽  
Umer Rashid ◽  
Asma Hanif ◽  
Muhammad Nadeem Akhtar ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Large Scale ◽  
Heterogeneous Catalysts ◽  
Fatty Acid Methyl Esters ◽  
Low Cost ◽  
Methyl Esters ◽  
Acid Catalyst ◽  
Product Formation ◽  
Biodiesel Production ◽  
Acid Methyl

The effective transesterification process to produce fatty acid methyl esters (FAME) requires the use of low-cost, less corrosive, environmentally friendly and effective catalysts. Currently, worldwide biodiesel production revolves around the use of alkaline and acidic catalysts employed in heterogeneous and homogeneous phases. Homogeneous catalysts (soluble catalysts) for FAME production have been widespread for a while, but solid catalysts (heterogeneous catalysts) are a newer development for FAME production. The rate of reaction is much increased when homogeneous basic catalysts are used, but the main drawback is the cost of the process which arises due to the separation of catalysts from the reaction media after product formation. A promising field for catalytic biodiesel production is the use of heteropoly acids (HPAs) and polyoxometalate compounds. The flexibility of their structures and super acidic properties can be enhanced by incorporation of polyoxometalate anions into the complex proton acids. This pseudo liquid phase makes it possible for nearly all mobile protons to take part in the catalysis process. Carbonaceous materials which are obtained after sulfonation show promising catalytic activity towards the transesterification process. Another promising heterogeneous acid catalyst used for FAME production is vanadium phosphate. Furthermore, biocatalysts are receiving attention for large-scale FAME production in which lipase is the most common one used successfully This review critically describes the most important homogeneous and heterogeneous catalysts used in the current FAME production, with future directions for their use.

scholarly journals Biodiesel Production from Rubber Seed Oil by Transesterification Using a Co-solvent of Fatty Acid Methyl Esters

2018 ◽  
Vol 41 (5) ◽  
pp. 1013-1018 ◽  
Author(s):  
Hanh Ngoc Thi Le ◽  
Kiyoshi Imamura ◽  
Norie Watanabe ◽  
Masakazu Furuta ◽  
Norimichi Takenaka ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Seed Oil ◽  
Methyl Esters ◽  
Biodiesel Production ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Acid Methyl

Chromatographic characterization of triacylglycerides and fatty acid methyl esters in microalgae oils for biodiesel production

2013 ◽  
Vol 5 (5) ◽  
pp. 053111 ◽  
Author(s):  
A. T. Soares ◽  
B. F. Silva ◽  
L. L. Fialho ◽  
M. A. G. Pequeno ◽  
A. A. H. Vieira ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Biodiesel Production ◽  
Acid Methyl ◽  
Chromatographic Characterization

scholarly journals Prospecting for Oleaginous and Robust Chlorella spp. for Coal-Fired Flue-Gas-Mediated Biodiesel Production

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2026 ◽  
Author(s):  
Bohwa Kim ◽  
Ramasamy Praveenkumar ◽  
Eunji Choi ◽  
Kyubock Lee ◽  
Sang Jeon ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Lipid Content ◽  
Flue Gas ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
International Standards ◽  
Biodiesel Production ◽  
Acid Methyl ◽  
G Cell ◽  
Mixotrophic Conditions

Prospecting for robust and high-productivity strains is a strategically important step in the microalgal biodiesel process. In this study, 30 local strains of Chlorella were evaluated in photobioreactors for biodiesel production using coal-fired flue-gas. Three strains (M082, M134, and KR-1) were sequentially selected based on cell growth, lipid content, and fatty acid composition under autotrophic and mixotrophic conditions. Under autotrophic conditions, M082 and M134 showed comparable lipid contents (ca. 230 mg FAME [fatty acid methyl esters derived from microalgal lipids]/g cell) and productivities (ca. 40 mg FAME/L·d) versus a reference strain (KR-1) outdoors with actual flue-gas (CO2, 13%). Interestingly, under mixotrophic conditions, M082 demonstrated, along with maximal lipid content (397 mg FAME/g cell), good tolerance to high temperature (40 °C). Furthermore, the fatty acid methyl esters met important international standards under all of the tested culture conditions. Thus, it was concluded that M082 can be a feedstock of choice for coal-fired, flue-gas-mediated biodiesel production.

scholarly journals Fatty Acid Methyl Esters from the Herbal Industry Wastes as a Potential Feedstock for Biodiesel Production

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3702
Author(s):  
Aneta Sienkiewicz ◽  
Alicja Piotrowska-Niczyporuk ◽  
Andrzej Bajguz
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Cetane Number ◽  
Biodiesel Production ◽  
Ultrasound Assisted Extraction ◽  
Selected Ion Monitoring ◽  
Acid Methyl ◽  
Assisted Extraction ◽  
Potential Resource

Due to thegrowing awareness of fossil fuel depletion and environmental issues, biodiesel alternative fuel is currently of substantial interest. This research assessed herbal industry wastes as a potential resource for biodiesel production for the first time. Fatty acid methyl esters (FAMEs), obtained in the transesterification reaction, were extracted from the herbal samples by ultrasound-assisted extraction and identified withgas chromatography-mass spectrometry in the selected ion monitoring mode. The presence of at least 20 (e.g., in chamomile and chicory) FAMEs, up to 31 in nettle and senna, was reported. The unsaturated FAMEs were found in higher amounts than saturated. Linoleic acidwas the major polyunsaturated FAME in herbal wastes, while palmitic acid was the major saturated FAME. The highest content of FAMEs was identified in rye bran, Figure tea, and chicory. According to the cetane number prediction, BS EN 14214:2012+A2:2019, and hierarchical clustering on principal components (HCPC)wastes from, e.g., nettle, sage, and senna, are the most suitable in biodiesel production with fuel properties acceptable by the EuropeanStandards.Principal component analysis and HCPC allowed to classify and groupsimilar plants according to their FAMEs content; however, additional studies of herbal biofuel properties are needed.

scholarly journals Esterification of Palm Fatty Acid Distillate for Biodiesel Production Catalyzed by Synthesized Kenaf Seed Cake-Based Sulfonated Catalyst

Catalysts ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 482 ◽  
Author(s):  
Shehu-Ibrahim Akinfalabi ◽  
Umer Rashid ◽  
Thomas Yaw Choong Shean ◽  
Imededdine Arbi Nehdi ◽  
Hassen Mohamed Sbihi ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Specific Surface ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Biodiesel Production ◽  
Seed Cake ◽  
Palm Fatty Acid Distillate ◽  
Acid Methyl ◽  
Kenaf Seed

Sulfonated kenaf seed cake (SO3H-KSC) catalyst, was synthesized to aid biodiesel production from palm fatty acid distillate (PFAD). It was chemically activated with phosphoric acid for an impregnation period of 24 h in order to enhance the porosity and the specific surface area of kenaf seed cake (KSC). After the carbonization and sulfonation, the resultant catalyst was characterized with powder X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscope (FESEM), NH3-temperature programmed desorption (NH3-TPD) and thermogravimetric analysis (TGA). The SO3H-KSC catalyst was amorphous in nature and had an acid density of 14.32 mmol/g, specific surface area of 365.63 m2/g, pore volume of 0.31 cm3/g and pore diameter of 2.89 nm. At optimum esterification conditions--reaction time 90 mins, temperature of 338 K, methanol:PFAD molar ratio of 10:1 and catalyst concentration of 2 wt.%—a free fatty acid (FFA) conversion of 98.7% and fatty acid methyl esters (FAME) yield of 97.9% was achieved. The synthesized SO3H-KSC catalyst underwent five reaction cycles while maintaining a fatty acid methyl esters (FAME) yield and free fatty acid (FFA) conversion of >90%. Thus, the SO3H-KSC catalyst was shown to be an excellent application of bio-based material as a precursor for catalyst synthesis for esterification of PFAD.

The Potential of Biodiesel Production from Fatty Acid Methyl Esters of Some European/Mediterranean and Cosmopolitan Halophyte Seed Oils

2010 ◽  
Vol 7 (3) ◽  
pp. 102565
Author(s):  
S. W. Dean ◽  
Vassilios T. Sotiroudis ◽  
Theodore G. Sotiroudis ◽  
Fragiskos N. Kolisis
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Biodiesel Production ◽  
Seed Oils ◽  
Acid Methyl

scholarly journals Engineering Escherichia coli for Biodiesel Production Utilizing a Bacterial Fatty Acid Methyltransferase

2011 ◽  
Vol 77 (22) ◽  
pp. 8052-8061 ◽  
Author(s):  
Parwez Nawabi ◽  
Stefan Bauer ◽  
Nikos Kyrpides ◽  
Athanasios Lykidis
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acids ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Acyl Chain ◽  
Biodiesel Production ◽  
Common Component ◽  
Acid Methyl ◽  
Bacterial Fatty Acid

ABSTRACTThe production of low-cost biofuels in engineered microorganisms is of great interest due to the continual increase in the world's energy demands. Biodiesel is a renewable fuel that can potentially be produced in microbes cost-effectively. Fatty acid methyl esters (FAMEs) are a common component of biodiesel and can be synthesized from either triacylglycerol or free fatty acids (FFAs). Here we report the identification of a novel bacterial fatty acid methyltransferase (FAMT) that catalyzes the formation of FAMEs and 3-hydroxyl fatty acid methyl esters (3-OH-FAMEs) from the respective free acids andS-adenosylmethionine (AdoMet). FAMT exhibits a higher specificity toward 3-hydroxy free fatty acids (3-OH-FFAs) than FFAs, synthesizing 3-hydroxy fatty acid methyl esters (3-OH-FAMEs)in vivo. We have also identified bacterial members of the fatty acyl-acyl carrier protein (ACP) thioesterase (FAT) enzyme family with distinct acyl chain specificities. These bacterial FATs exhibit increased specificity toward 3-hydroxyacyl-ACP, generating 3-OH-FFAs, which can subsequently be utilized by FAMTs to produce 3-OH-FAMEs. PhaG (3-hydroxyacyl ACP:coenzyme A [CoA] transacylase) constitutes an alternative route to 3-OH-FFA synthesis; the coexpression of PhaG with FAMT led to the highest level of accumulation of 3-OH-FAMEs and FAMEs. The availability of AdoMet, the second substrate for FAMT, is an important factor regulating the amount of methyl esters produced by bacterial cells. Our results indicate that the deletion of the global methionine regulatormetJand the overexpression of methionine adenosyltransferase result in increased methyl ester synthesis.

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