Isotherm and Thermodynamic Studies on Pb(II), Ni (II), Cd (II) ions sorption from aqueous solution using calopogoniumniuconoides (CALOPO):-Uko, Anthonia E.
ABSTRACT
The removal of Cdfllk Pb(Il) and Ni(ll) from
solution using calopo (ccilo/xigonii/niiniiconoiik’s) pod as adsorbent was
studied. The effect of dosage, and metal ion concentration on the adsorption
were examined. The residual Cd(Il), Pb(Il) and Ni(II) in solution was
determined using atomic adsorption spectrophotometer. The equilibrium
adsorption data were described by Temkin Langmuir Dubinin-Raduskevich and
Freundlich isotherm models. The coefficients of correlation ofthe four models
were high with Langmuir isotherm being the most fit. The ma.ximium adsorption
capacity of Ni(II), Pb(II), and Cd(Il) are 43.103mg'g,42.373mg/g and 32.33mg/g
respectively .The adsorption process is endothermic and thermodynamically
feasible and increase in entropy since change in enthalpy(AH°). Gibb's free
energy(AG°), and change in entropy(AS°) are positive, negative and positive
respectively. Therefore, CalopogoniuniMuconoidesis a promising adsorbent for
adsorption ol'Ni(ll). Pb(ll) and Cd(II) ions.
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UKO, E (2023). Isotherm and Thermodynamic Studies on Pb(II), Ni (II), Cd (II) ions sorption from aqueous solution using calopogoniumniuconoides (CALOPO):-Uko, Anthonia E. . Repository.mouau.edu.ng: Retrieved May 03, 2024, from https://repository.mouau.edu.ng/work/view/isotherm-and-thermodynamic-studies-on-pbii-ni-ii-cd-ii-ions-sorption-from-aqueous-solution-using-calopogoniumniuconoides-calopo-uko-anthonia-e-7-2
EMMANUEL, UKO. "Isotherm and Thermodynamic Studies on Pb(II), Ni (II), Cd (II) ions sorption from aqueous solution using calopogoniumniuconoides (CALOPO):-Uko, Anthonia E. " Repository.mouau.edu.ng. Repository.mouau.edu.ng, 11 Dec. 2023, https://repository.mouau.edu.ng/work/view/isotherm-and-thermodynamic-studies-on-pbii-ni-ii-cd-ii-ions-sorption-from-aqueous-solution-using-calopogoniumniuconoides-calopo-uko-anthonia-e-7-2. Accessed 03 May. 2024.
EMMANUEL, UKO. "Isotherm and Thermodynamic Studies on Pb(II), Ni (II), Cd (II) ions sorption from aqueous solution using calopogoniumniuconoides (CALOPO):-Uko, Anthonia E. ". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 11 Dec. 2023. Web. 03 May. 2024. < https://repository.mouau.edu.ng/work/view/isotherm-and-thermodynamic-studies-on-pbii-ni-ii-cd-ii-ions-sorption-from-aqueous-solution-using-calopogoniumniuconoides-calopo-uko-anthonia-e-7-2 >.
EMMANUEL, UKO. "Isotherm and Thermodynamic Studies on Pb(II), Ni (II), Cd (II) ions sorption from aqueous solution using calopogoniumniuconoides (CALOPO):-Uko, Anthonia E. " Repository.mouau.edu.ng (2023). Accessed 03 May. 2024. https://repository.mouau.edu.ng/work/view/isotherm-and-thermodynamic-studies-on-pbii-ni-ii-cd-ii-ions-sorption-from-aqueous-solution-using-calopogoniumniuconoides-calopo-uko-anthonia-e-7-2