Removal of Cr from synthetic wastewater by sorption into volcanic ash soil von Babel, S, Opiso, E. M

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Mapping and analysis of flood scenarios using numerical models and GIS techniques von Puno, G. R., Amper, R. A. L., Opiso, E. M., Cipriano, J. A. B.

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Incorporation of arsenic during the formation of Mg-bearing minerals at alkaline condition von Opiso, E.M., Sato, T., Morimoto, K., Asai, A., Anraku, S., Numako, C., Yoneda, T.

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Systems approach toward a greener eco-efficient mineral extraction and sustainable land use management in the Philippines von Promentilla, MA, Beltran, A, Orbecido, A, Bernardo-Arugay, I, Resabal, VJ, Villacorte-Tabelin, M, Dalona, IM, Opiso, E, Alloro, R, Alonzo, D, Tabelin, C, Brito-Parada, P

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