Местоположение издательства:Hauppauge, NY, United States
Первая страница:27
Последняя страница:35
Номер статьи:3
Аннотация:Influence of hydrogen parameter (pH) of wastewaters on selectivity and permeability of acetatecelluluse membranes was studied for sulphate pulp production. Change of membrane permeability for pH 1.03 to 10.93 was determined as minor. Selectivity at pH < 3 increases fast, for 3 < pH < 9 selectivity has linear growth and for pH > 9 selectivity has slow grow rate. By varying the pH of the separated solution, it is possible to adjust the selectivity of the membranes for Mg:" ions, huinic and ligmn compounds. This opens up a new and interesting direction for recycling pulp mills. Liquor or concentrates after membrane installations can be used to purify water (reservoirs) and wastewater from heavy metals, includmg radionuclides.
