Enhanced adsorptive removal of cationic and anionic dyes from aqueous solutions by olive stone activated carbon

“…The first group integrates classical models which are fully empirical or semi-empirical. These models are very famous and have been extensively employed in the literature [8,21]. However, the physical meaning of the parameters involved are not always obvious.…”

Section: Theoretical Models For the Equilibrium Isothermsmentioning

confidence: 99%

“…To overcome these shortcomings, we can take advantage of exploiting advanced models based on statistical physics. It should be mentioned that the research of many others [21][22][23][24] used only classical adsorption models and were unable to compute accurately the adsorption. In the present work, adsorption models derived from statistical physics will be employed.…”

Section: Introductionmentioning

confidence: 99%

Cationic dye removal using Pergularia tomentosa L. fruit: kinetics and isotherm characteristics using classical and advanced models

Belmabrouk¹,

Selmi²,

Alshahrani³

et al. 2022

Comptes Rendus. Chimie

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“…Therefore, biochar especially is attracting attention as a low-cost adsorbent because it can be used as a substitute for activated carbon, which is used as a conventional adsorbent due to its ability to adsorb high levels of pollutants. The use of biochar as being eco-friendly for the removal of dye from wastewater has been examined in the past by several researchers [17][18][19][20][21]. However, in literature, there are few studies related to the production of biochars from tannery solid wastes and their application to wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Industrial dye removal from tannery wastewater by using biochar produced from tannery fleshing waste: a road to circular economy

Haddad¹,

Hantous²,

Chagtmi³

et al. 2022

Comptes Rendus. Chimie

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In this study, the capacity of biochars, derived from the pyrolysis of tannery fleshing waste (TFW) at 400 °C; 500 °C and 600 °C, in removal of red dye Sella Fast Red (SFR) from aqueous solutions and tannery wastewater was investigated under various experimental conditions in batch mode. Results show that for all applied biochars, the removed kinetics data were well fitted by the pseudo-second-order model, and the equilibrium state was obtained after 240 min of contact time. For an aqueous pH of 6 and a red dye concentration of 75 mg•L −1 , the removed amounts increased from 26 mg•g −1 to 39.86 mg•g −1 when the used pyrolysis temperature was increased from 400 °C to 600 °C. Moreover, SFR adsorption data at equilibrium were well fitted by Langmuir model suggesting a probable monolayer adsorption process with a maximal removal capacity of 62.7 mg•g −1 for BTFW-600 °C. The thermodynamic study demonstrated that SFR adsorption was endothermic for the three tested biochars. Desorption experiments with distilled water proved that SFR was significantly desorbed from the tested biochars, which offers possible reusability. On the other hand, BTFW-600 °C has demonstrated an important ability in removing SFR from real wastewater since only one dosage of 15 g•L −1 was enough to ensure more than 97% of dye removal. According to pH ZC and FTIR analysis, the possible mechanism toward SFR dye removal was attributed to electrostatic interactions that occurred between biochar and functional groups of SFR. This work could provide guidance for the value-added utilization of tannery solid waste and a practical way to remove dyes from tannery wastewater.

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Enhanced adsorptive removal of cationic and anionic dyes from aqueous solutions by olive stone activated carbon

Abstract: Sustainable Biomass Resources for Environmental, Agronomic, Biomaterials and Energy Applications 1 / Ressources de biomasse durables pour des applications environnementales, agronomiques, de biomatériaux et énergétiques 1

Cited by 13 publications

References 57 publications

Pharmaceutical pollutants adsorption onto activated carbon: isotherm, kinetic investigations and DFT modeling approaches

Pharmaceutical pollutants adsorption onto activated carbon: isotherm, kinetic investigations and DFT modeling approaches

Cationic dye removal using Pergularia tomentosa L. fruit: kinetics and isotherm characteristics using classical and advanced models

Industrial dye removal from tannery wastewater by using biochar produced from tannery fleshing waste: a road to circular economy

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