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

By Yogesh C. Sharma

Water pollutants is subject of titanic and customary challenge through the global.  This publication provides the consequences and information from learn and adsorption experiments performed at the removing of nickel and chromium (as good as different metals) from aqueous options utilizing converted silica sand.

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

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

Sample text

7% nickel removal was obtained under these operational conditions. 30 ECONOMIC REMOVAL OF METALS FROM AQUEOUS SOLUTIONS Removal of Ni+2 by adsorption in a fixed bed of wheat straw was investigated by Doan et al. [72]. Ni+2 in a solution were removed by biosorption in a fixed bed of wheat straw (Triticum aestivum). 0 in) on biosorption of Ni+2 was also investigated. 0. On the other hand, removal appeared to be insensitive to liquid temperature from 25°-30°C. Nevertheless, a 25% increase in the percentage removal of metal ions was observed with further increase of liquid temperature from 30° - 35°C.

Chromium and nickel are the most commonly used metals in different industrial activities. Chromium, nickel, and their compounds are widely used in electroplating, dye industries, leather tanning, cement industries, and photographic industries [51, 52]. Copper, cadmium, and lead are some other important metals which are frequently used in electroplating, metal finishing, electrical industries, fertilizers, and wood manufacturing. They are also used in pigment industries as alloys with iron and other metals, and in the petrochemical and paint industries.

3 mg g_1) for its use in metal waste purification systems to be feasible. These positive results are ratified when real wastewaters are used at lab-scale as well as semi-industrial scale, validating the use of this mineral as a cost-effective treatment to purify such wastewaters. Sorption behaviour of Ni(II) was investigated by Petruzzelli et al. 8), to evaluate the effects of ligand species present in the sludge in the process of retaining heavy metals. The addition of sewage sludge extract did not reduce the sorption, but rather increased the amount of heavy metals retained by soil.

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