Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Diatoms and Their Capability for Heavy Metals Removal by Cationic Exchange

Juan Hernández-Ávila
ORCID logo ,
Eleazar Salinas-Rodríguez
* ORCID logo ,
Eduardo Cerecedo-Sáenz
ORCID logo ,
Ma. Isabel Reyes-Valderrama
,
Alberto Arenas-Flores
,
Alma Delia Román-Gutiérrez
,
Ventura Rodríguez-Lugo
ORCID logo
Version 1 : Received: 23 February 2017 / Approved: 23 February 2017 / Online: 23 February 2017 (10:37:50 CET)

A peer-reviewed article of this Preprint also exists.

Hernández-Ávila, J.; Salinas-Rodríguez, E.; Cerecedo-Sáenz, E.; Reyes-Valderrama, M.I.; Arenas-Flores, A.; Román-Gutiérrez, A.D.; Rodríguez-Lugo, V. Diatoms and Their Capability for Heavy Metal Removal by Cationic Exchange. Metals 2017, 7, 169. Hernández-Ávila, J.; Salinas-Rodríguez, E.; Cerecedo-Sáenz, E.; Reyes-Valderrama, M.I.; Arenas-Flores, A.; Román-Gutiérrez, A.D.; Rodríguez-Lugo, V. Diatoms and Their Capability for Heavy Metal Removal by Cationic Exchange. Metals 2017, 7, 169.

Abstract

This work shows the physicochemical and mineralogical characterization of diatomites form the Hidalgo and Jalisco States, Mexico. In the case of the mineral from Hidalgo State, this has the following chemical composition; 70.0 % wt. SiO2, 11.63 wt. % Al2O3, 1.95 wt. % FeO, 1.79 wt. % MgO, 2.41 wt. % K2O, 0.85 wt. % CaO and 6.10 wt. % Na2O. On the other hand, the mineral from Jalisco has the following chemical composition; 93.58 wt. % SiO2, 3.03 wt. % Al2O3, 1.81 wt. % FeO, 0.40 wt. % MgO, 0.92 wt. % K2O, 0.11 wt. % CaO and 0.24 wt. % Na2O. For recovery of metals, both minerals got arsenic, silver, lead and nickel recoveries upper to 95 % and lower to 10 % for chromium. According to efficiency of interchange, the mineral from Hidalgo is slightly higher in the case of arsenic, lead and silver; while for nickel and particularly chromium (VI) the efficiency is higher for the mineral from Jalisco.

Keywords

Diatomite; ionic exchange; metals removal; heavy metals

Subject

Chemistry and Materials Science, Metals, Alloys and Metallurgy

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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