Sorption models Of Cadmium (11) ion onto agricultural tuber wastes

Okoro, I. A.; Abii, T.

doi:10.5251/ajsir.2011.2.3.381.385

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…The use of sweet potato peels as an adsorbent in the adsorption of heavy metals has been advocated in recent years. Batch adsorption studies for the effective removal of heavy metals using sweet potato peel which includes the adsorption of Fe (III) ions (Prasad and Abdullah, 2009), removal of Ni (II) ions (Kakanlanga et al, 2012), removal of Cd (II) ions, (Okoro and Abii, 2011) have also been conducted by researchers. However, limited or no studies are available on the use of sweet potato peels for the removal of Cr (VI) ions.…”

Section: Introductionmentioning

confidence: 99%

Continuous Sorption of Chromium Ions from Simulated Effluents using Citric Acid Modified Sweet Potato Peels

Yahya¹,

Ihejirika²,

Iyaka³

et al. 2020

Nig. J. Technol. Dev.

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Adsorptive removal of chromium ion in aqueous medium using activated sweet potato peel (SPP) was studied in a laboratory-scale fixed bed column. Specifically, the effect of process parameters such as bed depth, flowrate and chromium ion concentration in aqueous solution, on the adsorption efficiency of the acid modified sweet potato peel was examined. Column adsorption analysis showed that at the flow rate of 0.5 cm3/min, bed height of 6 cm and column influent concentration of 30 mg/dm3, the optimum chromium (VI) ion removal of 87.5% was attained with the equilibrium adsorption capacity of 2.4548 mg/g. Continuous adsorption models such as Yoon-Nelson, Adam-Bohart and the Bed-Depth Service Time (BDST) model, were used to analyse the experimental data and based on correlation coefficient, BDST model best aligned with the obtained experimental data with correlation coefficient, R2, value of 96.43%. The bed capacity, No, and the rate constant, Ka, were calculated as 4.259 mg/dm3 and 0.01045 L/mgmin respectively at optimum column conditions. Results confirmed that acid modified SPP can be used to remove or reduce concentrations of Cr (VI) ions to allowable limits before disposal into water bodies. Keywords: Continuous sorption, chromium ions, sweet potato peel, kinetic isotherms, breakthrough curves

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Section: Introductionmentioning

confidence: 99%

Continuous Sorption of Chromium Ions from Simulated Effluents using Citric Acid Modified Sweet Potato Peels

Yahya¹,

Ihejirika²,

Iyaka³

et al. 2020

Nig. J. Technol. Dev.

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“…Eguvbe, (2007) andEgurefa, (2008) reported the use of Yam peelings and fallen dried almond leaves (Terminalia Catappa L.) respectively as effective biosorbents for heavy metal uptake from aqueous solutions. A series of other agricultural tuber wastes have also been investigated (Okoro & Okoro, 2008). These again have added to the sorption bank.…”

Section: Overah Lchukwudumebi; Odiachi Ifeanyimentioning

confidence: 99%

Evaluation of <i>Dacryodes edulis</i> (native pear) seed biomass for Pb (II) sorption from aqueous solution

Overah¹,

Ifeanyi²

2017

Journal of Applied Sciences and Environmental Management

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Dacryodes edulis (Native pear) seed is herein evaluated as a promising biomass for Pb(II) removal from aqueous solution. The Pb(II) adsorption onto Dacryodes edulis seed biomass was influenced by the solution pH, time, biomass dose and initial adsorbate concentration. The Freundlich model fitted better than the Langmuir model which also gave a good fit when the experimental data were represented on both isotherm models. The kinetic data clearly established the pseudo -second order model as a more appropriate model for describing the Pb(II) ion sorption onto pulverized seed of Dacryodes edulis. This investigation shows that at pH 5, biomass concentration, 50 mg/L; temperature 28 o C and contact time 90 minutes, a Langmuir monolayer adsorption capacity of 10.42 mg/g was obtained. This is an indication that the native peer seed is an efficient biosorbent for Pb(II) ions removal from aqueous environment. © JASEM http://dx.doi.org/10.4314/jasem.v21i1.19

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Sorption models Of Cadmium (11) ion onto agricultural tuber wastes

Cited by 2 publications

References 3 publications

Continuous Sorption of Chromium Ions from Simulated Effluents using Citric Acid Modified Sweet Potato Peels

Continuous Sorption of Chromium Ions from Simulated Effluents using Citric Acid Modified Sweet Potato Peels

Evaluation of <i>Dacryodes edulis</i> (native pear) seed biomass for Pb (II) sorption from aqueous solution

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