Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.

Loretta Chukwudumebi Overah

doi:10.4314/njbas.v28i2.2

E-ISSN 2756-4843 | ISSN 0794-5698

2022, Vol: 30, Issue: 2

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Original Research

Nig. J. Basic Appl. Sci.. 2020; 28(2): 10-19

doi: 10.4314/njbas.v28i2.2

Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.

Loretta Chukwudumebi Overah.

Abstract
The kinetics and equilibrium adsorption isotherm of cadmium (II) adsorption onto Dacryodes edulis (native peer seed) biomass was studied using a non linear approach which is unpopular but proven in literature to be more reliable and easier. In optimizing the process, about 98 % removal of the cadmium ion was achieved within five minutes at pH 7, by contacting just 30 mg of the Dacryodes edulis seed biomass with the adsorbate solution of concentration of 100 mg/L. Non-linear investigation of the kinetics and adsorption isotherms of the process was done using the R console statistical and computing software. The results indicated that the Elovich mechanism and the Freundlich adsorption isotherm most suitably described the kinetics and adsorption isotherm respectively, of the process as provided by their least values of the sum of squared residuals (SSR). This outcome implied a chemical adsorption (chemisorption) mechanism and a multi-layer coverage by the cadmium ions on heterogenous active sites of the biomass surface with a Freundlich constant or capacity factor, Kf of 27.83 mg g-1, heterogeinity factor 1/n of 0.2614 and Elovich constants,α and β as 7.0 mg g−1 s−1 and 1.0 g mg-1, respectively.

Key words: Dacryodes edulis, Elovich kinetic model, Freundlich isotherm, Langmuir isotherm, non linear.

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Pubmed Style

Overah LC, . Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.. Nig. J. Basic Appl. Sci.. 2020; 28(2): 10-19. doi:10.4314/njbas.v28i2.2

Web Style

Overah LC, . Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.. https://www.njbas-udus.com/?mno=55687 [Access: February 02, 2023]. doi:10.4314/njbas.v28i2.2

AMA (American Medical Association) Style

Overah LC, . Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.. Nig. J. Basic Appl. Sci.. 2020; 28(2): 10-19. doi:10.4314/njbas.v28i2.2

Vancouver/ICMJE Style

Overah LC, . Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.. Nig. J. Basic Appl. Sci.. (2020), [cited February 02, 2023]; 28(2): 10-19. doi:10.4314/njbas.v28i2.2

Harvard Style

Overah, L. C. & (2020) Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.. Nig. J. Basic Appl. Sci., 28 (2), 10-19. doi:10.4314/njbas.v28i2.2

Turabian Style

Overah, Loretta Chukwudumebi, and . 2020. Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.. Nigerian Journal of Basic and Applied Sciences, 28 (2), 10-19. doi:10.4314/njbas.v28i2.2

Chicago Style

Overah, Loretta Chukwudumebi, and . "Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.." Nigerian Journal of Basic and Applied Sciences 28 (2020), 10-19. doi:10.4314/njbas.v28i2.2

MLA (The Modern Language Association) Style

APA (American Psychological Association) Style

Overah, L. C. & (2020) Non Linear Kinetic And Equilibrium Adsorption Isotherm Study of Cadmium(II) Sorption By Dacryodes edulis Biomass.. Nigerian Journal of Basic and Applied Sciences, 28 (2), 10-19. doi:10.4314/njbas.v28i2.2

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