Tons of old newsprint, magazines, and mixed-office-waste
continue to be produced and recycled each year. This material needs to be
deinked and further processed in order to complete the recycling process for
reuse and reproduction as new paper and paperboard products. Whether in recycled paper or in virgin pulp processes, magnesium
hydroxide can assist in reducing costs and improving operations.
The use of magnesium hydroxide (Mg(OH)2) solutions in chemical
deinking and various bleaching processes is preferred in order to improve
equipment performance, lower total chemical costs, and reduce wastewater COD
concentrations, which can result in lower “stickies” production. High purity Mg(OH)2
has been shown to regularly outperform alternatives, offering up to 27% more
alkalinity than caustic soda.