Adsorption of carbamate pesticide Methomyl by Co-Beta Zeolite particles prepared wet ion-exchange method from aqueous solutions was studied. The effect zeolite and concentrations, pH value, sintering temperature on removal an solution change methomyl concentration during the adsorption followed using UV-Visible spectrophotometer. Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy...

Background: Heavy metals, even at low concentrations, are harmful to human health and environment. Cadmium as a heavy metal is highly toxic and can cause serious threat to living organisms. This research was designed to evaluate the adsorption potential of modified magnetic iron nanoparticles by 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol ligand for the removal of cadmium ions from water solu...

In this paper, dye removal ability of the surface modified nanoparticle SMN copper ferrite from single and quaternary systems was investigated. Acid Blue 92 AB92, Direct Green 6 DG6, Direct Red 23 DR23 and Direct Red 80 DR80 were used as model compounds. The effect of surfactant concentration, adsorbent dosage, dye concentration and pH on dye removal was evaluated. The adsorption isotherm and k...

the performance of msu-s and its forms modified with phosphotungstic acid (hpw) and nickel (ni) for the desulfurization and denitrogenation of model diesel fuel were studied. according to the results of the characteristic tests (n2 adsorption-desorption, xrd, sem, and nh3-tpd), heteropoly acid incorporation causes higher acidity along with a negligible loss of structural aspects, while ni impre...

In this research modified Kaolin by Cetyltrimethylammonium bromide is used as an adsorbent for the removal of Reactive Blue 21 from aqueous solutions. Response Surface Methodology was used to study the effect of independent variables, such as Reactive Blue 21 dye concentration (20, 40, 60, 80 and 100 mg/L), time (10, 20, 30, 40 and 50), initial pH (2, 4, 6, 8 and 10) and modified Kaolin dosage ...

This study synthesised eggshell waste, an agricultural by-product, into a calcinated porous material modified by salicylic acid as new and effective adsorbent for remediation of Cu(II) from aqueous solution. The impregnation onto the surface egg-shell improved adsorption property eggshell. Furthermore, it was found that acid-modified egg-shell; (SAL-E) has highly developed functionalised rich p...

What governs how much information speakers include in referring expressions? Atypical properties of objects are more likely to be included in referring expressions than typical ones. E.g., speakers are more likely to call a blue banana a “blue banana” and a yellow banana a ”banana”. A unified account of this phenomenon is lacking. When should a rational speaker mention an object’s color? Refere...

It is very rare to have the ions of only one metal ion in wastewater. Hence, removal copper and lead from aqueous solution single binary systems using natural banana peels was investigated a batch mode. Banana were characterised FTIR, which gave functional groups present. The spectra loaded with Pb(II) had higher percentage transmittance after adsorption. point zero charge pHpzc peel found be 4...

In this study, mesoporous MCM-41 has been modified by incorporation of aluminum ion asa rapid, simple and inexpensive method for modification. The adsorbent is characterized usingpowder X-ray diffraction and nitrogen adsorption-desorption isotherm data. The distributioncoefficient of cadmium ion on the mesoporous aluminosilicates has been enhanced with theincrease of the aluminum in the framewo...