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Showing 1 to 20 of 234 for “"zeta potential"”.
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Improving the settleability of a metal sulphide suspension by the application of a magnetic field
… repulsive forces and subsequent increase in the zeta potential of a suspension. For the purposes of this study, a copper sulphide suspension was used. A T-mixer was used as the reaction zone for the precipitation of each suspension. Subsequent to this, the suspended copper sulphide particles were …
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Preparation and Characterization Of Oil-in-water Nano-emulsions Of Trifluoperazine For Parenteral Drug Delivery
… method. Z-average, polydispersity index, zeta potential of emulsions were determined. A fully randomized 2X2X2X2X2 statistical design was developed using JMP software. Optimal formulation was selected based on desirable properties of low z-average and polydispersity index, and high zeta …
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Competitive Adsorption of Arsenite and Silicic Acid on Goethite
… investigated utilizing pH adsorption data and zeta potential measurements. Both addition scenarios (Si before As(III) and As(III) before Si) were examined. The results of the adsorption experiments and zeta potential measurements were then used to model the single ion and competitive ion …
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Co-Extrusion of Cement -Based Materials to Achieve Functionally Graded Microstructure
… pastes was evaluated by rheological and zeta potential measurements. Only zeta potential was found to be valuable to assess the effectiveness of clay as a plasticizer. The PGN clay, which had high amount of montmorillonite, with combination of silica fume, polyethylene glycol and …
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Surface chemical aspects of microbubble flotation
… Also, the effect of oil emulsifiers on the zeta potential of oil droplets has been studied. In general, oil droplets are negatively charged and negative zeta potential is reduced with the addition of nonionic and cationic surfactants. On the other hand, the negative charge is increased with …
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The prediction of flux decline in cross-flow microfilters via three-dimensional fluid dynamic models of tortuous pore structure
… transmembrane pressure, particle-membrane (PM) zeta potential, and particle-particle (PP) zeta potential on flux decline. The simulation experiments revealed that low flux decline was associated with relatively low transmembrane pressures and near-zero values of PP- and PM-zeta potential; and …
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Green approach to treat institutional wastewater by using cassava peels starch (CPS) as coagulant aid
… based coagulants. This study traces the potential removal of pollutants from institutional wastewater by coagulation-flocculation processes. Alum as primary coagulant and CPS as coagulant aid was used for removal of pollutants. A series of batch experiments were performed to study the …
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Microfluidic Electro-osmotic Flow Pumps
… vapor deposition (PECVD) silicon dioxide, the zeta potential was investigated. PECVD oxide is amorphous and less dense than thermal silicon dioxide, which slightly changes the zeta potential. Zeta potentials were found for pH values from 2.6 to 8.3. Also, surface defects that affect the zeta …
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Effect of water temperature on cohesive soil erosion
… and, explore the relationship between zeta potential and erosion rate. Samples of kaolinite- and montmorillonite-sand mixtures, and vermiculite-dominated soil were placed in the wall of a recirculating flume channel using a vertical sample orientation. Erosion rate was measured under a …
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Nanocápsulas furtivas de óleo de copaíba contendo anfotericina B: um sistema promissor no tratamento de infecções fúngicas sistêmicas
… structure with polymeric shell and a core with a potential drug delivery. Thus, the aim of this work was to develop polymeric nanocapsules using ethyl-cyanoacrylate (ECA) as matrix with a stealth shell containing copaiba oil-resin and amphotericin B core as a promising system for the treatment of …
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Investigation of the Colloidal Properties of Extracellular Vesicles from Yeast and Bacteria: Implications for Environmental Transport
… colloidal properties of EVs were studied: zeta potential and attachment efficiency. A proxy for surface charge, zeta potential provides initial characterizations for the electrostatic trends of EVs. From these data, conditions where humic acid concentration are high or ionic strength is low …
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Studies of Interactions Between Rod-like Celulose Nanocrystals and Xylan and Pullulan Derivatives: A Light Scattering Study
… was also studied by UV-Vis spectroscopy, zeta-potential measurements, and polarized and depolarized dynamic light scattering. UV-Vis spectroscopy of the P4CC03/water binary system and in situ light scattering showed UV crosslinking of pullulan 4-chlorocinnamate occurred in binary and …
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The Effect of Switchable Additives on Colloidal Interactions Found in Oil Sands
… found in oil sands, in an effort to identify potential candidates for industrial use. Chemical force spectrometry was used to evaluate adhesion forces present in model oil sand systems. Organic/mineral and mineral/mineral interactions were investigated in the presence of cationic and anionic …
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Effect of Ultrasonication on Biofilm Forming Ability of Common Dairy Sporeformers
… biofilm forming ability, injured cells recovery, zeta potential and hydrophobicity of common dairy sporeformers. Three different bacteria, <em>Geobacillus stearothermophilus</em> (ATCC®15952), <em>Bacillus licheniformis</em> (ATCC® 6634), and <em>Bacillus sporothermodurans</em> (DSM 10599) were …
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Development of Multifunctional Nanoparticles for Cancer Therapy Applications
… scanning calorimetry, and ATR-FTIR. The zeta potential of Fe3O4 colloids in phosphate buffered saline (PBS) decreased from -23.6 to -5.0 mV as a consequence of phospholipid immobilization. Hyperthermia-relevant temperatures greater than 40°C were achieved within 10 – 15 min using a 7-mT …
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A New Interfacial Cross Linking Technique: Preparation, Characterization and Evaluation of Calcium alginate Nanoparticles as a Protein Delivery System
… alginate nanoparticles and to evaluate its potential as a protein delivery system. Two template w/o microemulsions were prepared using DOSS as surfactant and cyclohexane as the organic phase respectively. Various proportions of these mixtures were tested for their ability to form stable …
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Microspheres and Nanoparticles From Ultrasound
… microscopy, XRD, XPS, EDS, SAED, zeta potential, and BET.
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The role of complexing agents in the flotation of pentlandite-pyroxene mixtures
… sulphate) in the system at pH 9. Microflotation, zeta potential measurements, ToF-SIMS analyses (time of flight secondary ion mass spectrometry) and X-ray photoelectron spectroscopy (XPS) were used as tools in determining the extent of surface alteration.
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Calcium Carbonate Formation in Water Distribution Systems and Autogenous Repair of Leaks by Inert Particle Clogging
… quality on leak repair. Size distribution and zeta potential of the particles were measured. Silica particles were practically unchanged by the different solution chemistries while the size and zeta potential of alumina particles varied. The rate of clogging with silica particles was not …
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INVESTIGATION OF LIGAND SIZE ON TARGETED PLGA NANOPARTICLES FOR HER2 BREAST CANCER: TRASTUZUMAB AND ITS ScFv ANTI-HER2 ANTIBODY
… carbodiimide hydrochloride (EDC). The size, zeta potential, polydispersity index, which were determined for the physicochemical characterizations. The physicochemical characterizations of formulations were executed to assess the effects of different ligands in vitro for drug targeting. Also, …
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