New insights into the effective removal of Basic Red 46 onto activated carbon produced from pomegranate peels

Akkari, Imane; Graba, Zahra; Bezzi, Nacer; Vithanage, Meththika; Kaci, Mohamed Mehdi

doi:10.1007/s13399-022-03401-4

Cited by 14 publications

(1 citation statement)

References 63 publications

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“…It is a porous carbonenous material that has a great attraction for pollutants because of its porous structure, surface multifunctionalities, and large specific surface area [ 30 ] and its application as a wastewater treatment technology like dye decolorization has been studied thoroughly. For instance, the application of activated carbon derived from pomegranate peels for the adsorption of basic red 46 [ 31 ], and the adsorptive removal of cationic dye onto activated carbon derived from cactus fruit peels [ 32 ] are some of the important examples of application of activated carbon. In addition to this, various adsorbent materials are applied for the removal of BBR dye [ 23 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

The application of Rumex abyssinicus based activated carbon for Brilliant Blue Reactive dye adsorption from aqueous solution

Mengistu,

Abewaa,

Adino

et al. 2023

BMC Chemistry

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The environmental pollution and human health impacts associated with the discharge of massive dye-containing effluents necessitate a search for cost-effective treatment technology. Therefore, this research work is conducted with the objective of investigating the potential of Rumex abyssinicus-derived activated carbon (RAAC) for the adsorption of Brilliant Blue Reactive (BBR) dye from aqueous solutions. Chemical activation with H3PO4 followed by pyrolysis was used to prepare the adsorbent. Characterization of the developed adsorbent was done using proximate analysis, pH point of zero charge (pHpzc), scanning electron microscope (SEM), Fourier transform infrared spectrometer (FTIR), Brunauer, Emmett, and Teller (BET), and X-ray diffraction (XRD). The experimental design and the effect of independent variables including pH (2, 6, and 10), initial dye concentration (50, 100, and 150 mg/L), adsorbent dosage (0.05, 0.1, and 0.15 g/100 mL), and contact time (20, 50, and 80 min) were optimized using the response surface methodology (RSM) coupled with Box Behnken design (BBD). The analysis results revealed the exitance of high specific surface area of 524 m2/g, morphological cracks, and the presence of multiple functional groups like –OH, C=C, alkene, and amorphous structure. Maximum removal efficiency of 99.98% was attained at optimum working conditions of pH 2, contact time of 50 min, dye concentration of 100 mg/L, and adsorbent dosage of 0.15 mg/100 mL, reducing the pollutant concentration from 100 to 0.02 mg/L. Evaluation of the experimental data was done using Langmuir, Freundlich, Temkin, and Sips isotherm models, in which the Langmuir model was found to be the best fit with the experimental data at R2 0.986. This shows that the adsorbent surface is homogeneous and mono-layered. Furthermore, the kinetic study confirmed that the pseudo second-order model best describes the experimental data with R2 = 0.999. In general, the research work showed that the low cost, environmental friendliness and high adsorption capabilities of the activated carbon derived from Rumex abyssinicus could be taken as an effective nt for the removal of BBR dye from aqueous solutions.

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