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+ S catalysts
+ Biodiesel
+ Catalyst design
+ Environmental catalysis
+ Viscosity
+ Heterogeneous catalysis
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Adrian Wiechoczek

How can I decrease the viscosity for biodiesel?

Covid-19  Follow

The viscosity of biodiesel depends on the length of the chain and the short-chain alcohol you use in the transesterification. Therefore, if you want to reduce the viscosity of biodiesel I would recommend to use blends from different raw materials such as babassu oil or coconut oil whose viscosity is below 4 cSt. If the oil you use to produce biodiesel is castor oil you will have problems to reduce its high viscosity and I would recommend to mix it such as B10 because its excellent oxidation stability properties.

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Camille Mayers  Follow

Following five techniques can be used to reduce the viscosity of vegetable oils:
· Preheating.
· Blending.
· Micro-emulsion.
· Pyrolysis (Thermal cracking).
· Transesterification

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Dan Vasii  Follow

The viscosity of biodiesel depends on the length of the chain and the short-chain alcohol you use in the transesterification. Therefore, if you want to reduce the viscosity of biodiesel I would recommend to use blends from different raw materials such as babassu oil or coconut oil whose viscosity is below 4 cSt. If the oil you use to produce biodiesel is castor oil you will have problems to reduce its high viscosity and I would recommend to mix it such as B10 because its excellent oxidation stability properties.

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Chris Bracher  Follow

There are two ways that commonly used to reduce the viscosity of biodiesel. 
1. by heating the biodiesel at 50 C ad 70C for period of time
2. by addition of low density diethyl ether (DEE) to the biodiesel.
AS a result, the viscosity maybe reduce and ignition delay period normally reduced also, but the exhaust gas temperature and other cycle temperature not change.. 

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Cherie Cone  Follow

In general, the biodiesel viscosity highly depends on the number of percent conversion of triglyceride into the alkyl ester compounds. if the total amount of triglyceride converted is 99%, the viscosity of alkyl ester will meet the standard requirement (for example: ASTM D6751). The trace compounds (such as: triglyceride, diglyceride and monoglyceride) contain in biodiesel also should be less than 1.0%.

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David  Follow

The long chains of hydrocarbon compound is highly impact on alkyl ester compounds (biodiesel)viscosity. The heat and physical treatment is able to reduce the viscosity of biodiesel, although it is not significantly.


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David Mott  Follow

You can also use Methanol for Transesterfication. This will give you lower viscosity biodiesel than using Ethanol.

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Attraction & Success  Follow

To decrease the viscosity for biodiesel best way to carry out trans- esterification by sodium methoxide in methanol.

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Darren Bord  Follow

Sutible of Density in condition reaction with temperature constant

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Chemistry point  Follow

Viscosity of biodiesel can be reduced in the following way:
1. Inclusion of ethanol/methanol
2. Subjecting the biodiesel to higher temperature
3. mixing low fraction of biodiesel with diesel

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