Chemical and Physical Characterization of Three Oxidic Lithological Materials for Water Treatment

José G. Prato (), Fernando Millán (), Marin Senila, Erika Andrea Levei, Claudiu Tănăselia, Luisa Carolina González (), Anita Cecilia Ríos, Luis Sagñay Yasaca and Guillermo Eduardo Dávalos
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José G. Prato: Grupo de Investigación: Estudios Interdisciplinarios, Facultad de Ingeniería, Universidad Nacional de Chimborazo, Riobamba 060103, Ecuador
Fernando Millán: Ingeniería Química, Instituto Universitario Politécnico “Santiago Mariño”, Mérida 5101, Venezuela
Marin Senila: Research Institute for Analytical Instrumentation, INCDO INOE 2000, Donath 67, RO-400293 Cluj-Napoca, Romania
Erika Andrea Levei: Research Institute for Analytical Instrumentation, INCDO INOE 2000, Donath 67, RO-400293 Cluj-Napoca, Romania
Claudiu Tănăselia: Research Institute for Analytical Instrumentation, INCDO INOE 2000, Donath 67, RO-400293 Cluj-Napoca, Romania
Luisa Carolina González: Grupo de Investigación “Análisis de Muestras Biológicas y Forenses”, Laboratorio Clínico, Facultad de Ciencias de la Salud, Universidad Nacional de Chimborazo, Av. Antonio José de Sucre km 1½ vía Guano, Riobamba 060103, Ecuador
Anita Cecilia Ríos: Grupo de Investigación: Estudios Interdisciplinarios, Facultad de Ingeniería, Universidad Nacional de Chimborazo, Riobamba 060103, Ecuador
Luis Sagñay Yasaca: Semillero de Investigación: Lechos de Materiales Oxídicos, Universidad Nacional de Chimborazo, Riobamba 060103, Ecuador
Guillermo Eduardo Dávalos: Facultad de Ciencias, Escuela Superior Politécnica de Chimborazo, Panamericana Sur km 1½, Riobamba 060103, Ecuador

Sustainability, 2024, vol. 16, issue 18, 1-20

Abstract: Water treatment necessitates the sustainable use of natural resources. This paper focuses on the characterization of three oxidic lithological materials (OLMs) with the aim of utilizing them to prepare calcined adsorbent substrates for ionic adsorption. The three materials have p H levels of 7.66, 4.63, and 6.57, respectively, and organic matter contents less than 0.5%. All of the materials are sandy loam or loamy sand. Their electric conductivities (0.18, 0.07, and 0.23 dS/m) show low levels of salinity and solubility. Their CEC (13.40, 13.77, and 6.76 cmol(+)kg) values are low, similar to those of amphoteric oxides and kaolin clays. Their aluminum contents range from 7% up to 12%, their iron contents range from 3% up to 7%, their titanium contents range from 0.3% to 0.63%, and their manganese contents range from 0.007% up to 0.033%. The amphoteric oxides of these metals are responsible for their ionic adsorption reactions due to their variable charge surfaces. Their zirconium concentrations range from 100 to 600 mg/g, giving these materials the refractory properties necessary for the preparation of calcined adsorbent substrates. Our XRD analysis shows they share a common mineralogical composition, with quartz as the principal component, as well as albite, which leads to their thermal properties and mechanical resistance against abrasion. The TDA and IR spectra show the presence of kaolinite, which is lost during thermal treatments. The results show that the OLMs might have potential as raw materials to prepare calcined adsorbent substrates for further applications and as granular media in the sustainable treatment of both natural water and wastewater.

Keywords: oxidic lithologic material; variable charges; physical and chemical properties; water treatment (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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