Production of a pure lignin product, part 1: Distribution and removal of Inorganics in Eucalyptus Globulus Kraft Lignin, 2013 PEERS Conference

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The LignoBoost process is a recently commercialized process for separation of lignin from kraft cooking black liquor. It is believed that future high value lignin-based products, such as carbon fibers, will require a lignin raw material essentially free from inorganic impurities. This work focuses on the effect of different process parameters on the content of inorganic impurities in the final LignoBoost lignin, produced from a black liquor from pulping of Eucalyptus Globulus. Attention has been paid to the distribution of the inorganics Na, K, Ca, Al, Mn, Mg, Si and Fe.