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Density measurement of biodiesel

Spanning the whole production process from monitoring of raw material to quality control of the final product, Anton Paar’s digital density meters are manifold applicable in the biodiesel production process.

Biodiesel – a renewable energy source

Biodiesel is a renewable diesel fuel substitute made from fats or oils of plant or animal origin. Biodiesel is available as pure fuel (referred to as B100) for specially adapted cars and in blends with petroleum diesel (e.g. B5 referring to a 5 % biodiesel blend according to standards).

Quality control and process monitoring in the biodiesel production

Density measurement is needed right from the start to determine the quality of the incoming raw materials. An adequate blending of the feedstock ensures not only optimization of the production costs but also helps to fulfill the required standards of the final product. Due to the fact that the density of the biofuel has an impact on fuel quality e.g. droplet size and lubrication behavior, the final product needs to be characterized accurately.

During the production process the density of different acid and base solutions needs to be determined to guarantee the right concentration. Further on the quality of glycerol, a by-product of the biodiesel production that has numerous applications (e.g. humectant, lubricant and starting material for resins or polymers), can be monitored over the whole purification process.

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