In this paper we report on the charging behavior of latex particles in aqueous suspensions. We use static light scattering and acid-base titrations as complementary techniques to observe both effective and bare particle charges. Acid-base titrations’at various ionic strengths provide the pH dependent charging curves. The surface chemical parameters (dissociation constant of the acidic carboxyli...

HYPOTHESIS Droplet wettability and mobility play an important role in dropwise condensation heat transfer. Heat exchangers and heat pipes operate at liquid-vapor saturation. We hypothesize that the wetting behavior of liquid water on microstructures surrounded by pure water vapor differs from that for water droplets in air. EXPERIMENTS The static and dynamic contact angles and contact angle h...

A study is performed of the effect means activation bentonite-like clays (acidic, alkaline, combined) have on adsorption characteristics Fe3+ ions under static conditions. The mechanism acidic and alkaline montmorillonite identified found to depend concentration activating agent. Solutions sulfuric acid lithium hydroxide are used as agents. It shown that during combined treatment enriched clay ...

Abstract In the present study, four solid adsorbents were prepared via green synthesis sources, namely, nanohydroxyapatite (NHAP), nanocellulose (NC), nanocellulose/nanohydroxyapatite composite (NPC), and ferric@nanocellulose/nanohydroxyapatite (FNPC). Synthesis procedures based on natural sources such as sea scallop shells cotton stalks. All characterized by TGA, XRD, nitrogen adsorption/desor...

In this paper, two types of adsorption materials SA-C-Fe and SA-C-Fe(C) were prepared using bagasse biochar produced by one-step microwave pyrolysis activation for Cr(VI) removal wastewater. The characterized, performance, kinetics thermodynamics on studied. Results show that pyrolysis/activation contributes to developed pore structure abundant active functional groups, resulting in high capaci...

The main objective of this study is the synthesis, use, and reuse magnetic copper ferrite nanospheres (CFNS) for extra-heavy oil viscosity reduction. CFNS were synthesized using a solvothermal method resulting in mean particle size 150 nm. Interactions with crude evaluated through asphaltene adsorption isotherms, as well static dynamic rheology measurements two cycles at 25 °C. Adsorption desor...

Abstract Static sorption properties of pine honey (PH) and citrus (CH) were studied at 20, 30 40°C. Yeast formation was observed on the surface honeys water activity (a w )>0.7 all temperatures. Visible yeast (YF) took place earlier in PH than CH under same conditions due to its characteristic higher pH lower monosacchride content. The temperature insignificantly effective YF (p>0.05). ex...

In this study, the inhibition effect of glycine on TiN corrosion in hydrogen peroxide (H 2 O ) solution was studied through polishing experiments, static tests and electrochemical tests. According to results impedance spectroscopy (EIS), 3 wt% exhibited an efficiency more than 78% for due greatly increased charge transfer resistance at TiN/solution interface after its addition. Scanning electro...