Analysis of some sorption isotherms for the removal of Ni&lt;sup&gt;2+&lt;/sup&gt; Pb&lt;sup&gt;2+&lt;/sup&gt; and Cu&lt;sup&gt;2+&lt;/sup&gt; using orange peel adsorbent

Salisu, L; Ibrahim, Mohammed

doi:10.4314/bajopas.v10i1.81s

Cited by 1 publication

(1 citation statement)

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“…Whereas, by comparing the SSE and EABS values of the three models, the Langmuir model has the smallest error, which suggests that it gives the most suitable description for the adsorption system on OP. Similar findings have also been mentioned by other literatures, the adsorption isothermal of OP in other metal ion solutions are more relevant to Langmuir model [30,42], and removal of La(III) and Y(III) by some general adsorbents are also conformed with the Langmuir model [33,38,43].…”

Section: Adsorption Isothermsupporting

confidence: 90%

Adsorption Performance of La(III) and Y(III) on Orange Peel: Impact of Experimental Variables, Isotherms, and Kinetics

Liu

Rao

Tian

et al. 2021

Adsorption Science & Technology

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To alleviate the environmental problem associated with rare earth wastewater, this research applied waste orange peel (OP) for the adsorption of La(III) and Y(III) from aqueous solution. The adsorption properties of orange peel are characterized using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), and the participation of hydroxyl and other oxygen-containing groups that promote the physical-chemical interaction is verified. Batch adsorption results suggest that orange peel possesses a satisfactory adsorption performance for La(III) and Y(III). The optimal adsorption conditions were obtained at pH of 6, temperature of 40°C, appropriate dosage of 2 g/L and 3 g/L, contact time of 30 min, and initial ion concentration of 32 mg/L. Under the same condition, adsorption performance of La(III) is better than that of Y(III). The experimental data is well fitted by the Langmuir isotherm model with correlation coefficient R 2 > 0.9 and the minimum standard error values. Equilibrium results show that Langmuir monolayer adsorption capacity of La(III) and Y(III) onto orange peel is up to 37.61 and 31.10 mg/g. The fitting results of kinetics prove that the adsorption process of La(III) and Y(III) follows the pseudosecond-order model. Thus, natural orange peel as a recyclable biosorbent has potential economic and applicative benefits to remove La(III) and Y(III) from aqueous solutions.

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