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For the production of bioethanol the biomass (corn, barley or wheat) is milled to a fine powder and is cooked together with water to extract the starch. Afterwards the mash is cooled and enzymes are added to convert the liquefied starch to fermentable sugars, a process called saccharification. Then yeast is added to ferment the sugars to ethanol and CO2.

The fermented mash contains up to 15 per cent alcohol, as well as the non-fermentable solids from the corn and yeast cells. The mash is then pumped into a continuous flow distillation system where the alcohol is separated from the solids and water. The product leaves the top of the final column with an alcohol content of about 96 per cent and is stored or further dehydrated up to 99.5 per cent, mostly in a molecular sieve. In case of using the ethanol as biofuels it is denatured with a small amount of ketones or other alcohols.

To optimise the ethanol yield and the end point of the fermentation process the sugar conversion and ethanol concentration during fermentation can be determined with the process density sensor DPRn 4122.

The Anton Paar alcohol monitors provide continuous ethanol concentration measurement with an accuracy of up to 0.03 per cent.

Anton Paar Ltd

Anton Paar develops, produces and distributes highly accurate laboratory instruments and process measuring systems, and provides custom-tailored automation and robotic solutions.

Anton Paar develops, produces and distributes highly accurate laboratory instruments and process measuring systems, and provides custom-tailored automation and robotic solutions.

It is the world leader in the measurement of density, concentration and CO2 and in the field of Rheometry. Other areas of specialty are: Viscometry, Polarimetry, Refractometry, Microwave Sample Preparation & Synthesis, Chemical and Mechanical Surface and Nanostructure Analysis.

With over 2200 employees at the headquarters in Graz (Austria) and the 25 sales subsidiaries worldwide, Anton Paar ensure that their products live up to their excellent reputation. The core competence of the company – high-precision production – and close contact to the scientific community form the basis for the quality of Anton Paar’s instruments.

A strong sales network in more than 110 countries guarantees customers rapid support and answers to their application and service queries.

Innovation is the basis for progress and every year Anton Paar invests more than 20 percent of the annual turnover in R&D.

Anton Paar Limited, a subsidiary of Anton Paar GmbH, provides sales, application support and service to users across the UK and Ireland.

With an office in St Albans (UK) and Dublin (Ireland) and a team of over 30 dedicated employees, Anton Paar Limited aims to provide first-class service at every stage in the customer relationship, ensuring our products live up to their excellent reputation.

Anton Paar Ltd
Unit F, The Courtyard
St Albans
AL4 0LA
UK

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