| http://www.w3.org/ns/prov#value | - The biomass is then washed and pressed to produce hemicelluloses sugars.The Alpena Prototype Biorefinery (APB) is a pilot demonstration facility being developed in Alpena in Michigan, US.Hydrolysis is the second step, where the hemicelluloses sugars are hydrolysed with acid, neutralised with lime and impurities such as lignin are removed.
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