Although many successful research studies have confirmed the advantages of magnesia based alkalis in the bleaching process, the innovative transition has been slow.
Sodium hydroxide, aka caustic soda, is frequently used as the strong alkali to collaborate with hydrogen peroxide to achieve optimum brightness during the bleaching process. Although this works, there are often negative byproducts to this process.
Magnesia based compounds (namely magnesium hydroxide and magnesium oxide) have shown to accomplish the same goal with added benefits including decreased COD (chemical oxygen demand), decreased DCS (dissolved colloidal substances) and greater strength properties of the bleached pulp. Mg(OH)2 used as the alkali is also known to dissolve less necessary organic material.
Garrison Minerals, the producers of AlkapHix®, continues to serve on the front lines of this transition with custom equipment, manufacturing of high-quality Mg(OH)2, and dosing consultancy.