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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 3, 2015, pp. 857-864
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Bioline Code: st15077
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 3, 2015, pp. 857-864
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Application of manganese nodules leaching residue for adsorption of nickel(II) ions from aqueous solution
Randhawa, N. S.; Dwivedi, D.; Prajapati, S. & Jana, R. K.
Abstract
Deep ocean manganese nodules are significant
futuristic resource of copper, nickel and cobalt. After
recovery of these valuable metals, a huge quantity of residue
(~70 % of ore body) is generated. In the present
paper, investigations carried out for the application of
washed manganese nodule leaching residue (wMNR) for
the removal of nickel (Ni) ions from aqueous solution by
adsorption are described. Several parameters have been
varied to study the feasibility of using wMNR as potential
adsorbent for remediation of Ni(II)-contaminated water.
The adsorption kinetics followed pseudo-first-order equation,
and the rate of adsorption increased with solution
temperature. Kinetics data of Ni(II) adsorption were also
discussed using diffusion models of Webber–Morris and
Dumwald–Wagner models. The equilibrium data were best
fitted into Langmuir adsorption isotherm, and the maximum
adsorption capacity was found to be 15.15 mg g-1 at
pH 5.5 and temperature 303 K, which decreased to
10.64 mg g-1 upon raising the solution temperature to
323 K. The activation energy for Ni(II) adsorption onto
wMNR was 9.56 kJ mol-1 indicated physical sorption.
Desorption studies showed successful regeneration of
adsorbent and recovery of Ni. This process can be utilized
for removal and recovery of Ni from the industrial effluent.
Keywords
Adsorption; Manganese nodule leached residue; Heavy metals; Nickel; Diffusion
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