Evaluation of Thermodynamic Parameters for Separation of Hexavalent Chromium by Fly Ash

1996 ◽  
Vol 31 (20) ◽  
pp. 2843-2853 ◽  
Author(s):  
G. P. Dasmahapatra ◽  
T. K. Pal ◽  
B. Bhattacharya
Keyword(s):  
Fly Ash ◽  
Thermodynamic Parameters ◽  
Hexavalent Chromium

Optimum Dose Of Lime And Fly Ash For Treatment Of Hexavalent Chromium–Contaminated Soil

2006 ◽  
Vol 6 (1-2) ◽  
pp. 171-189 ◽  
Author(s):  
Konstantinos Kostarelos ◽  
Daniela Reale ◽  
Dimitris Dermatas ◽  
Ennio Rao ◽  
Deok Hyun Moon
Keyword(s):  
Fly Ash ◽  
Hexavalent Chromium ◽  
Contaminated Soil ◽  
Optimum Dose

Evaluation of the potential of coal fly ash produced by gasification as hexavalent chromium adsorbent

2018 ◽  
Vol 26 (28) ◽  
pp. 28603-28613 ◽  
Author(s):  
Priscila Baruffi Ribeiro ◽  
Vitoria Olave de Freitas ◽  
Karine Machry ◽  
Ana Rosa Costa Muniz ◽  
Gabriela Silveira da Rosa
Keyword(s):  
Fly Ash ◽  
Hexavalent Chromium ◽  
Coal Fly Ash

Hexavalent chromium bioreduction and chemical precipitation of sulphate as a treatment of site-specific fly ash leachates

2017 ◽  
Vol 33 (5) ◽  
Author(s):  
Errol D. Cason ◽  
Peter J. Williams ◽  
Elizabeth Ojo ◽  
Julio Castillo ◽  
Mary F. DeFlaun ◽  
...  
Keyword(s):  
Fly Ash ◽  
Hexavalent Chromium ◽  
Chemical Precipitation ◽  
Site Specific

Hexavalent chromium release from lignite fly ash and related ecotoxic effects

2013 ◽  
Vol 48 (11) ◽  
pp. 1390-1398 ◽  
Author(s):  
Efthymios Darakas ◽  
Vasilios Tsiridis ◽  
Maria Petala ◽  
Athanasios Kungolos
Keyword(s):  
Fly Ash ◽  
Hexavalent Chromium ◽  
Chromium Release ◽  
Lignite Fly Ash

Use of Fly Ash in the Removal of Copper, Nickel and Zinc from Wastewater

1993 ◽  
Vol 28 (2) ◽  
pp. 369-384 ◽  
Author(s):  
T. Viraraghavan ◽  
Murali M. Dronamraju
Keyword(s):  
Fly Ash ◽  
Thermodynamic Parameters ◽  
Contact Time ◽  
Adsorption Process ◽  
Initial Concentration ◽  
Copper Nickel ◽  
Adsorption Data ◽  
Ph Range ◽  
Langmuir And Freundlich Models

Abstract The effectiveness of fly ash in adsorbing copper, nickel and zinc was studied by conducting batch kinetic and isotherm studies. The effect of contact time, pH, initial concentration of the adsorbate, and temperature on the adsorption process was studied. Fly ash was found to be an effective adsorbent. The contact time necessary to attain equilibrium was found to be two hours. Maximum adsorption occurred in the pH range of 3.0 to 3.5. The Langmuir and Freundlich models were found to be applicable to the adsorption data of copper, nickel and zinc. Thermodynamic parameters suggested the exothermic nature of the adsorption process.

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