Adsorption of nickel on flyash in natural and acid treated forms.
Studies on removal of Ni2+ by adsorption on flyash and acid treated flyash have been carried out at room temperature (30+/-1 degrees C). The adsorption isotherm of Ni2+ on flyash and acid treated flyash was obtained in a batch reactor. Various parameters such as pH, initial concentration of adsorbate and adsorbent dose were studied. The experimental adsorption data fitted reasonably well to Langmuir, Freundlich and Redlich - Peterson isotherms for both the adsorbents. The adsorption follows Lagergren first order kinetic model. The monolayer adsorption model are found to be 41.7 and 62.9 mg/g respectively. Acid treated flyash has been observed to have greater adsorptive capacity than flyash in natural form.
Department of Chemistry, Sri Venkateswara University, Tirupati - 517502, India.
S
S
Kalyani
J Ajitha
JA
Priya
P Srinivasa
PS
Rao
A
A
Krishnaiah
D000143:Acids / Q000737:chemistry; D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D003031:Coal; D060729:Coal Ash; D007220:Industrial Waste; D008962:Models, Theoretical; D009532:Nickel / Q000737:chemistry*; D052638:Particulate Matter; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*
D000143:Acids; D003031:Coal; D060729:Coal Ash; D007220:Industrial Waste; D052638:Particulate Matter; D002244:Carbon; D009532:Nickel