In this study, phosphate-based geopolymers obtained from two aluminosilicate precursors with different mineralogical compositions were investigated. The used experimental methods X-ray fluorescence, diffraction, atomic absorption measurements and designs. Nine factors influencing the dealumination process during geopolymer formation screened based on a Plackett–Burman design. results show that ...

Epoxy powder coatings containing zinc aluminum phosphate (ZAP) and zinc phosphate (ZP), which are the 2nd and 1st generation of phosphate-based pigments respectively, were applied to the surface of mild steel sheets. The anticorrosive performances of the coated samples were studied using electrochemical impedance spectroscopy (EIS). Cathodic disbonding resistance and the adhesion performance of...

Various kinds of soils can be formed from volcanic ash depending on the individual set of soil forming factors at different sites. Among these soils, Andisols or Andosols show unique properties mostly due to abundant noncrystalline materials such as allophane, imogolite, Al-humus complexes, ferrihydrite and so on. Highly porous structures made of aggregated noncrystalline Andisol materials have...

The formation of a borate-bridged dimeric aluminum Schiff-base compound [salen(Bu)Al]2O2BOMe [salen=N,N’-ethylenebis(salicylidenimine) (1) has been reported. Complex 1 crystallizes in a triclinic P space group with a=14.57, b=15.15, c=15.84 Å and a=96.92, b=90.82, g=105.538. The crystal structure shows the presence of a metaborate (MeOBO2 2– ) bridge between two five-coordinate aluminum atoms w...

The influence of pH and aging upon the phosphate binding capacity of iron(II1) or aluminum hydroxides has been investigated. The formation of reactive polynuclear hydroxo complexes by the hydrolyzing cations and the subsequent oxolation process are starting points of a discussion of the observed influence of the experimental conditions upon the rate and extent of phosphate adsorption. The ratio...

Background: Aluminum (Al) exposure is among the environmental risk factors that may involve in the pathogenesis of neurodegenerative diseases. Oxidative stress has a critical role in the Al-induced toxicity. Saffron is a plant with potent radical scavenging and anti-oxidative properties. This investigation was designed to evaluate the possible protective effects of saffron extract (SE) on alumi...

To investigate the protective efficacy of a seasonal trivalent inactivated whole virion influenza vaccine (TIV) adjuvanted with aluminum phosphate (Fluval AB, referred to here as TIV+Al), we immunized mice with the TIV+Al, and as controls, with TIV, TIV+Al combined with Freund adjuvant (TIV+Al+F), inactivated A/PR/8/34(H1N1) (PR8) strain or PBS, and challenged them with a lethal dose of a mouse...

Aluminum sulfate shows a positive effect on preventing efflorescence of magnesium potassium phosphate (MKP) cements. Its influence the MKP cement properties and hydration is explored in this study. Compared to reference (Mg/PO4 molar ratio = 4, w/c 0.25), aluminum retards setting, increases compressive strength, has little short-term volume stability. slows down kinetics, decreases pH values, a...

Phosphorus is an essential macroelement in plant growth and the human body, but excessive water enrichment with phosphorus a global threat to quality. To address this problem, development of efficient, affordable adsorbent for use removing large amounts from eutrophic necessary. Food-waste-based adsorbents offer sustainable solution because they utilize waste as valuable resource. This study ex...