Recovery of lignocelluloses from pre-hydrolysis liquor in the lime kiln of kraft-based dissolving pulp production process by adsorption to lime mud

► A new process for recovering lignocelluloses of PHL from the kraft-based dissolving pulp production process was proposed. ► The adsorption of lignocelluloses on lime mud was a fast process. ► The addition of polydiallyldimethylammonium chloride significantly increased the amount of adsorbed lignocelluloses. ► The potential impact of the process concept on energy saving of the lime kiln was discussed. ► This process could be adapted to decrease the inhibitor concentrations.