Photocatalytic degradation of pesticides by titanium dioxide and titanium pillared purified clays

Adsorption of textile dyes on raw and decanted Moroccan clays: Kinetics, equilibrium and thermodynamics

“…The raw clays were purified according to the following procedure: clay dispersion was placed in a graduated cylinder for allowing particles 42 mm in size to settle down and the fine fraction, whose size was o2 mm was extracted at the time of the static sedimentation of the particles in suspension based on Stokes equation [21]: where: "t" is the necessary time (min), for a particle of diameter "d" (mm), to reach a depth of X (centimeter).…”

Measure of Zeta Potential of Titanium Pillared Clays

“…Various inorganic polyhidroxycations have been intercalated as pillaring precursors (Al, Ti, Ni, Zr, Fe, Cr, Mg, Cu, etc. ) (Li et al, 2011).The pillared clays with TiO 2 pillars (TiO 2 -PILCs) have been used in catalytic degradation reactions of organic pollutant in water (Ooka et al, 2003;Ooka et al, 2004;Kun et al, 2006;Liu et al, 2007;Liu et al, 2009;Damardji et al, 2009;Abdennouri et al, 2011). Typically the TiO 2 -PILCs are obtained by adding a TiO 2 sol (prepared under acidic conditions) onto purified clay suspensions.…”

Catalizadores homogéneos y heterogéneos de Fe3+, Co2+ y Cu2+ para la degradación de metilparatión en medio acuoso diluido

“…El desarrollo de industrias de tipo agroquímico se ha incrementado drástica-mente en las últimas décadas, como resultado de la intensificación mundial de las actividades agrícolas, incrementado también el uso generalizado de pesticidas y la disposición inadecuada o tratamiento incipiente de los residuos [1]. Las industrias agroquímicas de pesticidas producen aguas residuales que contienen compuestos altamente tóxicos y no biodegradables que son persistentes, aún después de tratamientos convencionales de purificación.…”