Novel biosorbents from almond shells: Characterization and adsorption properties modeling for Cu(II) ions from aqueous solutions

Maaloul, Najeh; Oulego, Paula; Rendueles, Manuel; Ghorbal, Achraf; Dı́az, Mario

doi:10.1016/j.jece.2017.05.037

Cited by 77 publications

(20 citation statements)

References 59 publications

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“…Similar bands between 1161-1027 cm -1 (C-O elongation vibration in cellulose and hemicellulose) and 1632 cm -1 (vibrations of lignin) were found in the study by Maaloul et al (2017) with peanut shell adsorbent. Cardoso et al and 30° indicate the presence of crystalline cellulose in the samples (KEILUWEIT et al, 2010).…”

Section: Structural Analysis -Ftir and Xrdsupporting

confidence: 85%

Production and Characterization of Activated Biochar of Cássia Fistula L. Leaves

Tomassoni

Schneider

Giroletti

et al. 2020

R. gest. sust. ambient.

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A new activated biochar was produced by carbonizing Cássia fistula L. leaves and its characterization was performed. Scanning Electron Microscopic (SEM) images of the activated biochar showed morphology with numerous irregular cavities and pores. BET surface area and total pore volume of produced adsorbent were 192 m².g-1 and 0.108 cm3.g-1, respectively. Mean porous diameter of the produced biochar was 2.263 nm, characterizing a mesoporous material. Crystallinity and functional groups of the adsorbent were determined by X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) spectroscopy analyses, respectively. The pH of zero charge point (pHzcp) observed was equal to 10, demonstrating that the activated biochar has a negative surface, which facilitates the adsorption of positively charged compounds in water and wastewater treatment. Tree leaves of Cássia fistula L. represent a promising raw material for activated biochar production, given their availability and characteristics of the adsorbent produced. The use of tree leaves for activated biochar production can reduce the operational costs of adsorption process, besides providing the use of a residue for a more noble purpose.

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Section: Structural Analysis -Ftir and Xrdsupporting

confidence: 85%

Production and Characterization of Activated Biochar of Cássia Fistula L. Leaves

Tomassoni

Schneider

Giroletti

et al. 2020

R. gest. sust. ambient.

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show abstract

“…So, even if agricultural wastes have no remarkable industrial and commercial use, almond shell could be regarded as a potential low-cost bioadsorbent (Maaloul et al 2017). As per the literature survey and to the best of our knowledge, not enough work has been reported on the application of almond shells as biosorbents in the uptake of anionic [Eriochrome Black T (EBT)] and cationic [Malachite Green (MG)] dyes (Senturk et al 2010;Calero et al 2013;Deniz 2013).…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of cationic and anionic dyes from aqueous solution by utilizing almond shell as bioadsorbent

Arfi

Karoui

Mougin

et al. 2017

Euro-Mediterr J Environ Integr

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100

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Almond shell is a food waste that is utilized as bioadsorbent for the uptake of Eriochrome Black T (EBT) and Malachite Green (MG) dyes from aqueous solutions. The biomaterial was characterized by specific surface area (BET), scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis, and X-ray diffraction. The effects of the initial pH of solutions, particle size, adsorbent dosage, initial dye concentration, contact time, and temperature on the EBT and MG adsorption were studied using batch contact mode at 22°C. Rapid sorption dynamics following a second-order kinetic model were shown by kinetic studies. The adsorption equilibrium data were fitted well to the Freundlich isotherm for EBT and MG as anionic and cationic dyes, respectively. The adsorption of pollutants was exothermic (DH 0 = -1.7 kJ mol -1 for EBT and -32 kJ mol -1 for MG). The reaction was accompanied by a decrease in entropy (DS 0 \ 0 for EBT and MG). Negative values of DG 0 showed the spontaneity of the MG adsorption process. However, positive values of DG 0 showed that the EBT uptake by almond shell is not a spontaneous reaction. The results indicate that almond shell is a promising alternative for the biosorption of anionic (EBT) and cationic (MG) dyes from aqueous solutions.

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“…When pH is less than pHpzc, the adsorbent surface is positively charged and the adsorption of anions is favored. However, if pH is greater than pHpzc, the biosorbent surface is negatively charged and adsorption of cations is favored [32,70]. attributed to C-H and O-H stretching in cellulose [70,71] and to the association of hydrogen bonds, was observed for the R, ChR, and RR-ChR spectra [72].…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

“…However, if pH is greater than pHpzc, the biosorbent surface is negatively charged and adsorption of cations is favored [32,70]. attributed to C-H and O-H stretching in cellulose [70,71] and to the association of hydrogen bonds, was observed for the R, ChR, and RR-ChR spectra [72]. The FTIR spectrum of R shows a peak that occurred at 2920 cm −1 , which can be assigned to the symmetric C-H vibrations of cellulose and hemicelluloses.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Synthesis of novel biocomposite powder for simultaneous removal of hazardous ciprofloxacin and methylene blue: Central composite design, kinetic and isotherm studies using Brouers-Sotolongo family models

Karoui

Arfi

Mougin

et al. 2020

Journal of Hazardous Materials

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Novel biosorbents from almond shells: Characterization and adsorption properties modeling for Cu(II) ions from aqueous solutions

Cited by 77 publications

References 59 publications

Production and Characterization of Activated Biochar of Cássia Fistula L. Leaves

Production and Characterization of Activated Biochar of Cássia Fistula L. Leaves

Adsorptive removal of cationic and anionic dyes from aqueous solution by utilizing almond shell as bioadsorbent

Synthesis of novel biocomposite powder for simultaneous removal of hazardous ciprofloxacin and methylene blue: Central composite design, kinetic and isotherm studies using Brouers-Sotolongo family models

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