Sahu, S K and Meshram, Pratima and Pandey, B D and Kumar, Vinay and Mankhand, T R (2010) A comparative performance of two resins based on polysterene for removal of chromium(III) from tannery solution. In: Environmental Management in Metallurgical Industries, March 15-16, 2010, Banars Hindu University, Varanasi.
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Extraction of chromium(III) from a model tanning waste solution was compared by ion exchange using two sulfonated polysterene based resins viz. Indion 790 and Amberlite IR 120. These resins showed similar extraction behaviour towards chromium(III) from a model solution containing 500 ppm chromium(III). In the acidic region pH had no effect on the extraction of chromium(III). Beyond pH 3.5 extraction of chromium(III) with Indion 790 drastically decreased from 92 % to 76 % whereas, Amberlite IR – 120 was effective even up to 4.5 pH. Sorption of chromium(III) on Indion 790 and Amberlite IR 120 followed Freundlich and Langmuir isotherms. However, higher Freundlich constant values indicate strong chemical interaction of the metal ion with the resins. Desorption of chromium(III) from the loaded resins increased with the increase in concentration of eluant (5-20% H2SO4). With 20% sulfuric acid solution 89% chromium(III) was eluted from loaded Indion 790 in two stages, and from loaded Amberlite IR 120, 94% chromium(III) was eluted in three stages.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||Chromium(III); Ion exchange, resins; Amberlite IR-120; Indion 790|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||Sahu Sushanta Kumar|
|Deposited On:||30 Jan 2012 09:55|
|Last Modified:||19 Aug 2015 14:57|
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