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Wood chips are pretreated with steam or hot water prior to refining in a thermomechanical pulping (TMP) process. Currently, the resultant effluent (i.e., TMP pressate) must be treated in the wastewater treatment facility of the mill. Biomass fly ash is also generated in pulp mills as a residue from burning wood and other biomass in boilers. Fly ash utilization is currently limited and most of it...
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