Vol. 324 No. 3 (2014): Химия и химические технологии

Tobermorite absorbent synthesis for water purification

The urgency of the discussed issue is caused by the need to provide the technology of industrial recycling of secondary glass waste and water purification from heavy metals. The main aim of the study: to determine the basic possibility of tobermorite absorbent synthesis on the base of secondary glass waste for water purification from heavy metals. The methods used in the study:X-ray phase analysis, differential and thermal analysis, chemical analysis, nuclear and absorbing spectroscopy, method of an inversion voltamperometry. The results: The basic opportunity of tobermorite synthesis water purification was established. The authors have determined the technological parameters of obtaining tobermorite at autoclave processing: pressure 10 atm., temperature 190 °C, 5 hours of temporary endurance. The compositions of initial compounds were developed (wt. %): waste of lamp glass is 54,4-54,5; extinguished lime is 38,5-42,4, caustic sodium is 2,0-3,3, iron slime is 5. It was established, that the efficiency of the tobermorite filter is higher in static conditions, in comparison with dynamic conditions. It was averaged for samples obtained without iron slime - 91 %, for the sample with 5 % of iron slime - 98 %.

Keywords:

cullet, tobermorite, water treatment, adsorption, ferriferous slime

Authors:

Elena Lebedeva

Alina Kobyakova

Nadezhda Usova

Olga Kazmina