Yogesh C. Sharma's A Guide to the Economic Removal of Metals from Aqueous PDF

By Yogesh C. Sharma

ISBN-10: 1118137159

ISBN-13: 9781118137154

ISBN-10: 1118259432

ISBN-13: 9781118259436

Water pollutants is subject of enormous and customary quandary in the course of the global.  This booklet offers the implications and information from examine and adsorption experiments conducted at the elimination of nickel and chromium (as good as different metals) from aqueous options utilizing changed silica sand.

Content:
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 resources for A Guide to the Economic Removal of Metals from Aqueous Solutions

Sample text

The H-class of isotherm has a positive value on the adsorbent surface reflecting the high affinity for solute onto part of the adsorbent surface, and consequently the depletion of solute concentration in the bulk phase. The C-class of isotherm indicates a constant partition of solute between solution and adsorbate. In some instances, after a critical concentration, the curve may show an abrupt change suggesting that sites are becoming available for adsorption. Several types of isothermal adsorption relations are reported.

The saturated adsorption is regenerated by an acid and base treatment. The adsorption efficiency of the regenerated sawdust is found to be more than 95% of fresh sawdust for the removal of Cr (VI). , the disposal of the acid and base solution obtained that contains a high concentration of Cr (VI)] is the precipitation of Cr (VI) as Barium Chromate. 5 shows various low-cost commercial adsorbents and their adsorption capacity, which are used for removal of Cr (VI) from aqueous solutions. 5 Maximum adsorption capacity of various commercial and low-cost adsorbents for removal of Cr (VI) from aqueous solution [28].

In order to get adsorbed at a particular site, the adsorbate must diffuse across a stationary solvent film surrounding each adsorbent particle through the macro pores, and then through the micro pores. The time for adsorption to take place is the sum of the time 34 ECONOMIC REMOVAL OF METALS FROM AQUEOUS SOLUTIONS taken for each step. The slowest step will determine the rate for the whole process, and is called the rate determining step. 4 Film Diffusion The random movement of adsorbate molecules resulting from the collisions with the solvent molecules lead to their diffusion.

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A Guide to the Economic Removal of Metals from Aqueous Solutions by Yogesh C. Sharma


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