Kinetics and Mass Transfer of Free Fatty Acids Esterification with Methanol in a Tubular Packed Bed Reactor:  A Key Pretreatment in Biodiesel Production

2007 ◽  
Vol 46 (15) ◽  
pp. 5113-5121 ◽  
Author(s):  
E. Santacesaria ◽  
R. Tesser ◽  
M. Di Serio ◽  
M. Guida ◽  
D. Gaetano ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Mass Transfer ◽  
Free Fatty Acids ◽  
Packed Bed ◽  
Biodiesel Production ◽  
Packed Bed Reactor

Functional Nanomaterials-Catalyzed Production of Biodiesel

2020 ◽  
Vol 16 (3) ◽  
pp. 376-391
Author(s):  
Hu Pan ◽  
Hu Li ◽  
Heng Zhang ◽  
Anping Wang ◽  
Song Yang
Keyword(s):  
Fatty Acids ◽  
Mass Transfer ◽  
Free Fatty Acids ◽  
Active Site ◽  
Edible Oils ◽  
High Surface ◽  
Transesterification Reaction ◽  
Biodiesel Production ◽  
Synthesis Methods ◽  
Transfer Resistance

Background: Biodiesel, as a green and renewable biofuel, has great potential to replace fossil diesel. The development of efficient and stable heterogeneous catalysts is vital to produce biodiesel in an efficient and green way. Nanocatalysts provide a high surface-to-volume ratio as well as high active site loading and can improve mass transfer, which is beneficial to enhance their catalytic activity. Objective: The review focuses on the latest advances in the production of biodiesel using nanostructured catalysts. Methods: Biodiesel is mainly produced through esterification and transesterification reaction using acids, bases or lipases as catalysts. We mainly review the synthesis methods and physicochemical properties of various basic, acidic and lipase nanocatalysts. Meanwhile, their catalytic activities in biodiesel production are also discussed. Results: Alkali nanocatalysts are mainly suitable for transformation of oils with low acid values to biodiesel via transesterification reaction. In contrast, acidic nanocatalysts are not sensitive to water as well as free fatty acids and can avoid saponification associated with basic nanocatalysts while promote simultaneous esterification and transesterification reaction. However, acid-catalyzed transesterification usually requires harsh reaction conditions. In addition, the lipase-catalyzed process is also suitable for non-edible oils containing high contents of free fatty acids, which possess environmental and economic advantages. Conclusion: Nanocatalysts have many advantages such as good accessibility with nanostructure, high active site loading and reduction of mass transfer resistance. However, most of those materials undergo deactivation after several cycles. Therefore, the development of more efficient, stable, and low-cost nanocatalysts is desirable for producing biodiesel.

Removal of free fatty acids in Pongamia Pinnata (Karanja) oil using divinylbenzene-styrene copolymer resins for biodiesel production

2012 ◽  
Vol 37 ◽  
pp. 335-341 ◽  
Author(s):  
V. Sathya Selva Bala ◽  
K.V. Thiruvengadaravi ◽  
P. Senthil Kumar ◽  
M.P. Premkumar ◽  
Vaidyanathan Vinoth kumar ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Pongamia Pinnata ◽  
Biodiesel Production ◽  
Styrene Copolymer ◽  
Karanja Oil

scholarly journals Continuous biodiesel production under subcritical condition of methanol – Design of pilot plant and packed bed reactor with MnCO3/Na-silicate catalyst

2018 ◽  
Vol 168 ◽  
pp. 494-504 ◽  
Author(s):  
Hui Liu ◽  
Ivana Lukić ◽  
Marija R. Miladinović ◽  
Vlada B. Veljković ◽  
Miodrag Zdujić ◽  
...  
Keyword(s):  
Pilot Plant ◽  
Packed Bed ◽  
Biodiesel Production ◽  
Packed Bed Reactor ◽  
Subcritical Condition

Lipase Acrylic Resin Catalyzed Interesterification of Sewage Sludge in Micro Packed Bed Reactor: Box-Behnken Design

2020 ◽  
Vol 870 ◽  
pp. 81-96
Author(s):  
Ali A. Jazie ◽  
Riyam Imad Jaddan ◽  
Mohamed F. Al-Dawody ◽  
Suhad A. Abed
Keyword(s):  
Enzyme Activity ◽  
Sewage Sludge ◽  
Ethyl Acetate ◽  
Acrylic Resin ◽  
Packed Bed ◽  
Biodiesel Production ◽  
Packed Bed Reactor ◽  
Heating Process ◽  
Optimum Conditions ◽  
Box Behnken Design

Ethyl acetate as acyl accepter have been used for sewage sludge biodiesel production in micro packed bed reactor. Lipase acrylic resin enzyme activity was investigated in the interesterification reaction of converting the sewage sludge into a biodiesel product. The main parameters affecting the process was adjusted via the design of Box-Behnken and approach of response surface then the optimum conditions were as follow (reaction time=15 h, ethyl acetate/oil ratio=24:1, temperature=40 °C and enzyme quantity=18 wt%) providing 95.78 % biodiesel yield. The lipase acrylic resin was examined under the optimum conditions for the reusability. the flow effect and the heating process of the micro packed bed reactor was investigated. The product biodiesel physicochemical properties were evaluated according to the ASTM D-6751-2 and found acceptable comparable to the mineral diesel properties.

Biodiesel production from high free fatty acids content Jatropha curcas L. oil using dual step process

2013 ◽  
Vol 3 (4) ◽  
pp. 361-369 ◽  
Author(s):  
Purabi Mazumdar ◽  
Swaroopa Rani Dasari ◽  
Venu Babu Borugadda ◽  
Garima Srivasatava ◽  
L. Sahoo ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Jatropha Curcas ◽  
Biodiesel Production ◽  
Step Process ◽  
Jatropha Curcas L
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