adsorption of chromium ions in activated carbon

Adsorption of chromium ions in activated carbon ...

01/08/2007 & 0183;& 32;Adsorption of chromium ions in activated carbon 1. Introduction. Chromium is an important toxic material because it does not undergo biodegradation. This pollutant is... 2. Experimental. The adsorbent used was activated carbon obtained by means of …Cited by: 176

Adsorption of chromium ions in activated carbon ...

The uptake capacity of chromium ions in an activated carbon bed at 20, 30 and 40 & 176;C was investigated in this work. The experiments were carried out in the pH range 4.0–4.5, with a flow rate of 2 mL/min. Breakthrough curves for feed concentrations from 0.17 up to 3.42 mequiv./L were obtained.Cited by: 176

Adsorption of chromium ions in activated carbon Request PDF

The uptake capacity of chromium ions in an activated carbon bed at 20, 30 and 40 & 176;C was investigated in this work. The experiments were carried out in the pH range 4.0–4.5, with a …预计阅读时间:9 分钟

Adsorption of chromium by activated carbon from aqueous ...

01/01/1999 & 0183;& 32;Jayson et al. studied the adsorption of chromium ions from aqueous solutions on a sample of activated carbon cloth using radioactive tracer techniques. The results showed that the adsorption of chromium ions from aqueous chromate solutions was always greater by a factor of ten than that from chromic solutions because chromic ions are too large to enter parts of the …Cited by: 310

PDF Adsorption of chromium ion VI by acid activated carbon

The activated carbon produced from olive stones was chemically activated using sulfuric acid, OS-S , and utilized as an adsorbent for the removal of Cr VI from aqueous solution in the...预计阅读时间:5 分钟

Removal of chromium ions from corrected aqueous ...

Adsorption isotherms of chromium ions in aqueous solution have been experimentally measured on a granular activated carbon GAC and on a char of South African coal CSAC . Experimental results show that the adsorption capacity for the GAC strongly depends on solution pH and salinity, with maximum values around 7mg/g at neutral pH and low salinity levels.Cited by: 197

Cadmium and Chromium Adsorption on Activated Carbon ...

Experimental results showed that the adsorbent rate of chromium ions was increased from 27.5 % to 76.34 % with an incraese in activated carbon dosage from 2 to 10 g/L. ...

Kinetics and thermodynamics studies of chromium VI ions ...

01/01/2009 & 0183;& 32;The adsorption rate has been found to be 65.70%. A comparison of kinetic models applied to the adsorption of chromium VI ions on the activated carbon was evaluated for the pseudo first-order, the pseudo second-order, and intraparticle diffusion kinetic models, respectively.Cited by: 205

Adsorption of chromium ions by candlenut shell based ...

Candlenut shell based carbon which was chemically activated using a solution of phosphoric acid and modified with nitric acid has been used to adsorb chromium ions Cr VI . This study aims to examine the effect of phosphoric acid activation on the surface area of the candlenut shell carbon and the effect of nitric acid on the adsorption capacity of metal ions Cr VI .预计阅读时间:2 分钟

Hexavalent chromium adsorption from aqueous solution using ...

The adsorption capacity of Cr VI was found to be highest 82% at pH 3.4 and greatly depended on the solution pH. We found that Cr VI adsorption decreased with increasing pH over the pH range of 3.4-10. The adsorption capacity increased dramatically when the temperature increased from 10 & 176;C to 50 & 176;C regardless of the amount of CNOs used.Cited by: 6

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