In the present study, activated carbons of Eichornea crasssipes(EC), Sugarcane bagassae(SB), Tea waste(TW) and Guava leaf(GL) were prepared from agricultural wastes and used as an adsorbents for the removal of Acid Blue 92 (AB92) dye from aqueous solution. The effects of pH, adsorbent dosage, initial dye concentration and contact time on the extent removal of AB92 has been studied by Batch adso...

the work focuses on the removing of cu(ii) from aqueous solution by linde f(k) zeolite. the zeolite is synthesized from fly ash by hydrothermal process. the adsorption experiments discuss several factors including the optimal solution ph, zeolite dosage, adsorption temperature, adsorption kinetics and adsorption isotherm equation. the results show that, the optimal solution ph is 6 and the effi...

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...

   In the present study, CeO2/Fe2O3 nanocomposite was prepared by co-precipitation method and its application was investigated for arsenic removal from water. Characterization of the nano sized adsorbent particles was carried out using SEM and XRD techniques. Systemic adsorption experiments were performed in batch systems and the optimum conditions were obtained. The effects of p...

The aim of this investigation was to determine the adsorption behavior and kinetics of methylene blue in aqueous solution on activated carbons prepared from papaya seeds by way of the two stage activation method in self-generated atmosphere using a muffle furnace. The optimised activated carbon, AK7, had a sorption kinetic that complied with the pseudo-second order kinetics and was fitted well ...

The role of enzyme engineering in biotechnology, biological and pharmaceutical process cannot be over emphasized. This study compared the adsorption of amylase and protease on to manganese ferrite (MnFe2O4). The metal ferrite was synthesized via a sol – gel technique and characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD), Electron paramagnet...

Chelating resin as a new copolymer for metal ions removal was prepared using 3-(4-hydroxyphenyl) cyclopropane-1,1,2,2-tetracarboxylic acid and 1,2-diaminoethane on the poly(styrene-alt-maleic anhydride). Parameters of sorption behavior were investigated under various conditions. Kinetics studies revealed that adsorption process confirmed pseudo-second-order kinetics data well fitted to Langmuir...

The cost-effective and environmentally benign separation of thorium from an aqueous acidic medium using spent food/agro-byproducts was studied. processes followed the Langmuir isotherm model kinetics; were entropic endothermic nature.

this paper discusses the biosorption of ni(ii) ions from aqueous solutions by bacillus sphaericus biomass. the biosorption process was affected by the solution ph, biomass concentration, contact time, temperature and initial ni(ii) concentration respectively. the sorption kinetics and equilibrium data were described well with the pseudo-second order kinetic model and the freundlich isotherm mod...

Arsenic, one of the most toxic and dangerous elements in the environment affecting millions of people around the world, is associated with several diseases. In this pilot study, we investigated removal of arsenate from aqueous solutions using chitosan under the influences of initial arsenic ion concentrations, pH, contact time, and adsorbent dosages of chitosan. In order to assess the sorption ...