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Publikācija: Low-Calcium

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity State funding for education
Defending: ,
Publication language English (en)
Title in original language Low-Calcium, Porous, Alkali-Activated Materials as Novel pH Stabilizers for Water Media
Field of research 2. Engineering and technology
Sub-field of research 2.1. Construction and transportation engineering
Research platform Materials, Processes, and Technologies
Authors Laura Vītola
Diāna Bajāre
Ángel Palomo
Ana Fernandez-Jimenez
Keywords PH stabilizing; Porous alkali-activated materials; Zeolites
Abstract Due to the increase of water consumption, water treatment systems become more actual and innovative materials for water treatment are welcomed. Traditionally, alkalizing agents, such as lime or caustic soda, have been employed to increase the pH levels, which induce chemical clarification of wastewater. Some innovative ideas of using low-calcium, alkali-activated materials (AAM) for this purpose have been considered previously. In this study, the low-calcium, porous, alkali-activated material (pAAM) was characterized to understand the impact of the aluminum silicate source and heat treatment on basic properties for material that might be used in water treatment systems as a softener by stabilizing the pH. The studied porous alkali-activated materials may ensure stable and long-lasting (30 days) pH (pH 10.3–11.6) in water media depending on the composition and amount of activation solution used for AAM preparation. Heat treatment does not have an impact on the mineralogical composition and structural properties of the pAAM, but it does change the leaching ability of alkalis from the material structure.
DOI: 10.3390/min10110935
Hyperlink: https://www.mdpi.com/2075-163X/10/11/935 
Reference Vītola, L., Bajāre, D., Palomo, Á., Fernandez-Jimenez, A. Low-Calcium, Porous, Alkali-Activated Materials as Novel pH Stabilizers for Water Media. Minerals, 2020, Vol. 10, No. 11, Article number 935. ISSN 2075-163X. Available from: doi:10.3390/min10110935
Additional information Citation count:
  • Scopus  0
ID 31431