Adsorption of proteins on inner capillary walls affects the quality of capillary electrophoresis (CE) analyses. Coating the capillary surface with an anti-adhesive layer is a method typically used to suppress protein adsorption. The successful development of methods for prevention of protein adsorption requires quantitative characterization of the surface ability to adsorb and desorb a protein....

Hydrous stannic oxide (HSO) was synthesized in the laboratory and its systematic Cr (VI) adsorption behaviour was studied by means of batch experiments. The particle size of HSO used was in the range of 140 to 290μm. The variable parameters viz. the effects of pH, concentration of Cr (VI) and time of contact etc. are here reported. The optimum pH and time of contact required for maximum adsorpt...

Data for water vapor adsorption and evaporation are presented for a bare soil (sandy loam, clay content 15%) in a southern Spanish olive grove. Water losses and gains were measured using eight high-precision minilysimeters, placed around an olive tree, which had been irrigated until the soil reached field capacity (!0.22 m m). They were subsequently left to dry for 10 days. A pair of lysimeters...

In this paper we develop a new mathematical formulation for chemical compositional reservoir simulation, and provide a comparison of its results on alkaline-surfactant-polymer flooding with those of UTCHEM simulator. Our research has found that the existing chemical compositional model estimates the adsorption effect on the transport of a component reasonably well but it does not satisfy the pr...

present study deals with the adsorption of glycolic acid (ga) from aqueous solutions by using bagasse fly ash (bfa). bfa is a solid waste generated from bagasse fired boilers and can be used as an adsorbent. batch adsorption studies were carried out to evaluate the effect of various parameters like adsorbent dose, contact time, initial concentration and temperature on the removal of ga from aq...

The dynamic adsorption of Pb(II) ions from aqueous solutions using a granulated activated carbon and an activated carbon cloth has been studied using fixed bed adsorption column. The breakthrough curves at different hydraulic loading rates (HLR), bed depth and feed concentration (Co) have been examined. The breakthrough time at any given concentration of the effluent decreases with increasing h...

to observe the feasibility of the removal of carmine, peanut husk, an agriculture by-product, was crosslinked with epichlorohydrin in alkaline medium and used for adsorption of carmine from aqueous solution. batch experiments were carried out to study the effects of various parameters such as initial ph, contact time, adsorbent dosage and initial carmine concentration, as well as temperature on...

background: heavy metals have been recognized as harmful environmental pollutant known to produce highly toxic effects on different organs and systems of both humans and animals. the aim of this paper is to evaluate the adsorption potential of chitosan for the removal of pb(ii), fe(ii) and cu(ii) ions from aqueous solutions. methods: this study was conducted in laboratory scale. in this paper c...

Crystal violet (CV) was removed from aqueous solutions using walnut shell (WS) as an adsorbent. The effect of initial ph, contact time, adsorbent level and temperature on CV adsorption, were studied in batch mode. The results indicated that both the Langmuir and the Freundlich equations effectively described the adsorption equilibrium. A pseudo second-order kinetics provided a perfect fit for t...