García, I. (I.)

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    [Retrato de Vicente Blasco Ibáñez] / I. García
    ([S.l. : s.n., 2012-11-30) Imprenta Valencianista; García, I. (I.); Valencia. Ayuntamiento
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    Struvite precipitation in wastewater treatment plants anaerobic digestion supernatants using a magnesium oxide by-product
    (2023) Guembe, M. (M.); García, I. (I.); Aguilar-Pozo, V.B. (V. B.); Gómez, J. (J.); Chimenos, J.M. (J. M.); Elduayen-Echave, B. (Beñat); Lopez, A. (A.); Olaciregui-Arizmendi, K. (K.); Ayesa-Iturrate, E. (Eduardo); Astals-García, S.(Sergi)
    Struvite precipitation is a well-known technology to recover and upcycle phosphorus from municipal wastewater as a slow-release fertiliser. However, the economic and environmental costs of struvite precipitation are constrained by using technical-grade reagents as a magnesium source. This research evaluates the feasibility of using a low-grade magnesium oxide (LG-MgO) by-product from the calcination of magnesite as a magnesium source to precipitate struvite from anaerobic digestion supernatants in wastewater treatment plants. Three distinct LG-MgOs were used in this research to capture the inherent variability of this by-product. The MgO content of the LG-MgOs varied from 42 % to 56 %, which governed the reactivity of the by-product. Experimental results showed that dosing LG-MgO at P:Mg molar ratio close to stoichiometry (i.e. 1:1 and 1:2) favoured struvite precipitation, whereas higher molar ratios (i.e. 1:4, 1:6 and 1:8) favoured calcium phosphate precipitation due to the higher calcium concentration and pH. At a P: Mg molar ratio of 1:1 and 1:2, the percentage of phosphate precipitated was 53-72 % and 89-97 %, respectively, depending on the LG-MgO reactivity. A final experiment was performed to examine the composition and morphology of the precipitate obtained under the most favourable conditions, which showed that (i) struvite was the mineral phase with the highest peaks intensity and (ii) struvite was present in two different shapes: hopper and polyhedral. Overall,
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    Utilidad de la infusión de adenosin trifosfato (ATP) en el diagnóstico de los pacientes con síncope de origen desconocido
    (Servicio de Publicaciones de la Universidad de Navarra, 2002) Palazuelos, J. (J.); Mejia, S. (S.); García, I. (I.); Berenguel, A. (Alejandro); Azcarate, P.M. (Pedro María); Castaño, S. (Sara); Martín, D. (D.)
    El síncope es una patología frecuente en los servicios de Urgencias que se acompaña de un alto índice de recurrencias. A pesar de las pruebas utilizadas en su estudio, en un alto porcentaje de pacientes no se puede filiar la etiología. Esta revisión analiza el fundamento, la utilidad y las implicaciones terapéuticas del test de infusión de ATP, recientemente incorporado en el estudio del síncope de origen desconocido.