The use of an agricultural waste material from Ziziphus jujuba as a novel adsorbent for humic acid removal from aqueous solutions

Bouras, Hadj Daoud; Benturki, Oumessaâd; Bouras, Noureddine; Attou, M.; Debenath, André; Merlin, André; Addoun, Fatima; Holtz, Michael D.

doi:10.1016/j.molliq.2015.08.028

Cited by 34 publications

(8 citation statements)

References 29 publications

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“…Jujube cores are considered as an agricultural waste and an animal feedstock. The samples were collected from "Medea," a town situated 80 km south west of Algiers (Algeria); in order for them to be valorized in different areas of chemical processes, this valorization has been widely shared by other team members, (Bouras et al, 2015) especially in the field of wastewater treatment. As a result, it is considered as an excellent precursor for the synthesis of an activated carbon due to its natural abundance; for this reason, many researchers in our laboratory have worked on jujube cores to remove phenols (P), paracresol, 2,4-dichlorophenol, 4-amino phenol, pesticides, humic acid, textile dyes, and hexavalent chromium from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of hexavalent chromium by activated carbon obtained from a waste lignocellulosic material (Ziziphus jujuba cores): Kinetic, equilibrium, and thermodynamic study

Labied

Benturki

Hamitouche

et al. 2018

Adsorption Science & Technology

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In aqueous solutions, hexavalent chromium Cr(VI) was successfully removed by activated carbon “Z. jujuba rubidium carbonate-activated carbon” obtained from waste lignocellulosic material (Ziziphus jujuba cores). Rubidium carbonate was used to prepare Z. jujuba rubidium carbonate-activated carbon by chemical activation using a 1:1 w/w ratio. Our results indicate that the obtained surface area of the activated carbon was equal to 608.31 m2/g. The adsorption study of Cr(VI) was investigated under batch conditions at constant stirring speed (220 r/min). Factors such as pH (1–6), temperature (20–40°C), adsorbent concentration (0.5–3 g/l), and initial Cr(VI) concentration (50–500 mg/l) were all studied to attain the maximum removal efficiency. Prior to the adsorption process, the morphology, elementary composition, and loss mass of activated carbon were characterized using scanning electron microscopy, X-ray fluorescence spectrometry, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Fourier transform infrared analysis of the adsorbent demonstrated the presence of key functional groups associated with the adsorption phenomenon such as those of hydroxyl and aromatic groups. The obtained results showed that the optimal conditions for a maximum adsorption efficiency are 2 for pH, 1 g/l for activated carbon dosage and 100 mg/l for Cr(VI) concentration. The removal percentage increased from 27.2 to 62.08%. The kinetic sorption was described by a pseudo-second-order kinetic equation (R2 ≈ 0.995). The Tóth (R2 = 0.997) and Elovich models were best to explain the sorption phenomenon. Thermodynamic studies showed that the adsorption of Cr(VI) onto activated carbon was feasible, spontaneous, and endothermic at 20–40°C. This novel Z. jujuba rubidium carbonate-activated carbon derived from Z. jujuba core has been found to be effective for the removal of Cr(VI) and not harmful to the ecosystem.

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Section: Introductionmentioning

confidence: 99%

Adsorption of hexavalent chromium by activated carbon obtained from a waste lignocellulosic material (Ziziphus jujuba cores): Kinetic, equilibrium, and thermodynamic study

Labied

Benturki

Hamitouche

et al. 2018

Adsorption Science & Technology

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151

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“…Adsorption is one of the popular techniques for the HA elimination due to its efficiency and its easy implementation. Many kinds of adsorbents have been used including activated carbons (Bouras et al., 2015), zeolites (Wang et al., 2008), resins (Wang et al., 2010), chitosan (Yan and Bai, 2005) and clay mineral (Abate and Masini, 2003; Elfarissi and Pefferkorn, 2000; Feng et al., 2005). Among the adsorbents mentioned above, the clay is gaining increasing interest from researchers (Chen et al., 2017; Peng et al., 2005; Salman et al., 2007; Wang et al., 2012; Zhang et al., 2012).…”

Section: Introductionmentioning

confidence: 99%

Physicochemical characterization of three natural clays used as adsorbent for the humic acid removal from aqueous solution

Gueu¹,

Finqueneisel

Zimny

et al. 2018

Adsorption Science & Technology

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“…However, these materials are considered as expensive adsorbents in the waste water treatment. Consequently, a considerable amount of research has focused on the preparation of activated carbon from materials which are relatively abundant and easily available, including different agricultural wastes 19‐27 …”

Section: Introductionmentioning

confidence: 99%

“…Consequently, a considerable amount of research has focused on the preparation of activated carbon from materials which are relatively abundant and easily available, including different agricultural wastes. [19][20][21][22][23][24][25][26][27] Adsorption mechanism of aromatic contaminants, including nitrobenzene, is still ambiguous. More recently works done by Zhang et al 28 and other researches [29][30][31][32][33][34] have shown that the adsorption capacity of organic compounds is significantly affected by the activated carbon surface chemistry.…”

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High adsorption capacity of nitrobenzene from aqueous solution using activated carbons prepared from vegetable waste

Kecira

Benturki

et al. 2020

Env Prog and Sustain Energy

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The present study reports the preparation of chemically activated carbons (PAC and ZAC) from apricot stones using phosphoric acid and zinc chloride, respectively. The potential use of the prepared carbons, as adsorbents, and the effect of chemical activation on the surface properties and adsorptive mechanism of nitrobenzene (NB) were investigated. The physicochemical properties of the obtained materials were characterized by Nitrogen adsorption-desorption isotherms, Scanning Electron Microscope, FTIR Spectroscopy, EDX analysis, Boehm titration, and pH of zero charge. The results show that the prepared samples present high apparent surface areas (1,382 and 1,111 m 2 /g for PAC and ZAC, respectively) and pores volumes with the presence of various functional groups. It was found that pseudo-second model was the most suitable for the fitting of the experimental kinetic data and the intraparticle diffusion was not the unique rate-controlling stage. The adsorption isotherms were well described by the Langmuir and the Freundlich models. According to the Langmuir model, the maximum adsorption capacity of PAC and ZAC were about 476.2 and 490.2 mg/g, respectively. The thermodynamic parameters showed the spontaneity, the exothermic nature, and the decrease in the randomness of the adsorption of nitrobenzene. Chemical regeneration showed that the prepared samples could be used for four time desorption-adsorption cycles with good efficiency for NB removal, indicating that the prepared carbons could be used as a low-cost alternative to commercial activated carbon for the removal of nitrobenzene from wastewater.

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The use of an agricultural waste material from Ziziphus jujuba as a novel adsorbent for humic acid removal from aqueous solutions

Cited by 34 publications

References 29 publications

Adsorption of hexavalent chromium by activated carbon obtained from a waste lignocellulosic material (Ziziphus jujuba cores): Kinetic, equilibrium, and thermodynamic study

Adsorption of hexavalent chromium by activated carbon obtained from a waste lignocellulosic material (Ziziphus jujuba cores): Kinetic, equilibrium, and thermodynamic study

Physicochemical characterization of three natural clays used as adsorbent for the humic acid removal from aqueous solution

High adsorption capacity of nitrobenzene from aqueous solution using activated carbons prepared from vegetable waste

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