Experimental Research on the Preparation of Porous Activated Carbon from Orange Wastes

Xie, Zhi Gang

doi:10.4028/www.scientific.net/amr.79-82.1907

Cited by 1 publication

(1 citation statement)

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“…Feng et al [24, 25] obtained final modified OP products after undergoing multistep operation with much ethanol, NaOH, and other modifiers to soak for more than 20 h. Zhang et al [26] studied the effects of activators by preparing activated carbon from citrus peel residue, and the yield was only about 37%. Similarly, Xie et al [27] applied OP to prepare activated carbon with the highest yield of 50.9%. In addition, when it comes to organic modification, given the deficiency of biodegradability for some typical organic solvents like thioglycolic acid, formaldehyde acrylamide, and others, which brings about hazard of toxic substances and the whole process costs elevated.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%