Download PDF by Yogesh C. Sharma: A Guide to the Economic Removal of Metals from Aqueous

By Yogesh C. Sharma

Water pollutants is subject of big and customary drawback through the global.  This e-book provides the consequences and information from examine and adsorption experiments conducted at the elimination of nickel and chromium (as good as different metals) from aqueous ideas utilizing converted silica sand.

Chapter 1 creation (pages 1–38):
Chapter 2 fabric and techniques (pages 39–43):
Chapter three effects and Discussions (pages 45–90):
Chapter four Conclusions (pages 91–101):

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Extra info for A Guide to the Economic Removal of Metals from Aqueous Solutions

Sample text

The curves obtained are single and smooth, indicating the formation of monolayer on the surface of adsorbent during the removal process. 3 Effect of pH on the Removal of Cr (VI) and Ni (II) The pH of solutions plays a very important role in the removal of pollutants from water and wastewater in a system using oxides, aluminosilicates, clays, and sand as adsorbents. It controls the surface charge and surface properties of the adsorbent surface as well as the degree of ionization. 0 g silica sand in a 150 ml reagent bottle held on a mechanical shaker equipped with a thermostatic water bath for 120 min at 25°C.

Several types of isothermal adsorption relations are reported. Adsorption isotherms are important tools for the analysis of the adsorption process. The adsorption isotherm is the initial experimental setup to determine feasibility of adsorption treatment. By using a batch equilibrium test relating to 38 ECONOMIC REMOVAL OF METALS FROM AQUEOUS SOLUTIONS the adsorbed per unit weight, the concentration of adsorbate remaining in the solution can be calculated. The Langmuir and Freundlich models have been widely used to describe the behaviour of the adsorbent-adsorbate couple.

Results of the effect of various important parameters were studied. By results of batch experiments, kinetic themodynamic and equilibrium studies were also carried out. A Guide to the Economic Removal of Metals from Aqueous Solutions cz Zphfti D. Tibsnb Dpqzsjhiu ª 3123 Tdsjwfofs Qvcmjtijoh MMD. 1 Chemical Characterization of Silica Sand The chemical compositions are analyzed by EDS (Energy dispersive X-ray analyzer). 1. , introduction of -OH group) in aqueous solution, which results in the formation of surface hydroxyl compounds.

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