Bio/KOH ratio effect on activated biochar and their dye based wastewater depollution

Abbaci, Fatima; Nait-Merzoug, Assia; Guellati, O.; Harat, Aicha; Haskouri, Jamal El; Delhalle, Joseph; Mekhalif, Zineb; Guérioune, M.

doi:10.1016/j.jaap.2022.105452

Cited by 41 publications

(19 citation statements)

References 108 publications

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“…The attained outcomes are compatible with those announced by Hasan and Fadhil 29 and Abbaci et al 52 upon the KOH activation of coke produced by thermal decomposition of atmospheric distillation residue and biochar originating from waste peels of potato, respectively.…”

Section: Resultssupporting

confidence: 89%

Adsorptive removal of dibenzothiophene from model fuel over activated carbon developed by KOH activation of pinecone: Equilibrium and kinetic studies

Khalid,

Fadhil

2023

Asia-Pacific J Chem Eng

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Activated carbon (AC) was developed from pinecone using KOH as an activator to eliminate dibenzothiophene (DBT) from a synthetic model of gasoline fuel. The best sample was the AC prepared, employing a 1.5:1 KOH: feed impregnation ratio at 750°C for 1 h. Thus, it was tested in the adsorptive elimination of DBT from the fuel after being identified by X‐ray diffraction (XRD), field‐emission scanning electron microscopy (FESEM), energy dispersive X‐ray (EDX), N2 adsorption–desorption isotherms, pore volume distribution, Fourier transform infrared spectroscopy (FTIR), total basic and acid groups, and pHPZC. The as‐obtained AC exhibited a Brunauer–Emmett–Teller (BET) surface area of 478.89 m2/g with an average pore size of 2.0 nm, indicating its micropores structure. A removal performance of 97.90% was obtained using 0.30 g of AC at 20°C for 30 min, while the adsorptive capacity amounted to 34.38 mg/g as per the Langmuir isotherm. The as‐synthesized AC exhibited a good adsorptive performance for eliminating S compounds from commercial gasoline (42.11%) under the optimal experimental conditions, which increased to 88.16% with increasing the mass of AC implemented in the adsorption process. The adsorption of DBT through the fixed‐bed approach was also adopted, and the results at various flow rates of the effluent through fixed bed of the AC were close to that obtained via the batch‐adsorption system. The regenerated AC exhibited excellent adsorptive performance for DBT until 5 cycles of reuse, reflecting the effectiveness of the obtained AC. Finally, the Langmuir adsorption isotherm and pseudo‐second‐order kinetics model best described the DBT adsorption by the AC developed from pinecone.

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Section: Resultssupporting

confidence: 89%

Adsorptive removal of dibenzothiophene from model fuel over activated carbon developed by KOH activation of pinecone: Equilibrium and kinetic studies

Khalid,

Fadhil

2023

Asia-Pacific J Chem Eng

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“…Generally, the increase of defects in graphical carbon increase the capacity of storage and adsorption [38]. In our composite, the value of ID/IG increased from 0.77 for biochar to 1.01 for magnetized biochar; those values confirm that the modification of the biochar magnetite created more defects and decreased the percentage of graphical carbons, which is a good parameter for the increase of the adsorption capacity [39][40][41][42].…”

Section: Results and Discussion 1) Characterization Of Opb And Opb/fe3o4supporting

confidence: 61%

Magnetization of a Biochar Derived from Orange Peel and Its Application for the Removal of Crystal Violet

et al. 2022

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In this work, biochar synthesized from orange peel modified with magnetite was used as an alternative magnetic adsorbent for dye removal. The magnetization of the synthesized biochar was done using the co-precipitation method. The obtained composite was characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), and Raman spectroscopy. The efficiency of magnetized biochar (OPB/Fe3O4) was studied in the process of removing crystal violet (CV) from an aqueous solution at different temperatures. The experimental data obtained for the kinetic studies were better fitted to the pseudo-second-order model, and the isotherms data were well fitted to the Langmuir model. The results showed that the adsorption capacity increases with increasing temperature, reaching 113 mg g-1 at 50 °C. Thermodynamic parameters (ΔG0, ΔH0, ΔS0) were also calculated; their values showed that the adsorption was spontaneous and endothermic. These results inspire us to use other similar materials to solve the problem of water and environmental pollution.

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“…9a and b. 85 In high dye concentrations, the chance of dye molecule collision with the adsorbent active sites increases and the barrier of mass transfer of dye molecules from the bulk solution to the solid interface is overwhelmed by a strong driving force which leads to higher q e values by increasing the dye concentration (Fig. 9a).…”

Section: Resultsmentioning

confidence: 99%

Sustainable high-efficiency removal of cationic and anionic dyes using new super adsorbent biochar: performance, isotherm, kinetic and thermodynamic evaluation

Mosaffa,

Banerjee,

Ghafuri

2023

Environ. Sci.: Water Res. Technol.

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Bio/KOH ratio effect on activated biochar and their dye based wastewater depollution

Cited by 41 publications

References 108 publications

Adsorptive removal of dibenzothiophene from model fuel over activated carbon developed by KOH activation of pinecone: Equilibrium and kinetic studies

Adsorptive removal of dibenzothiophene from model fuel over activated carbon developed by KOH activation of pinecone: Equilibrium and kinetic studies

Magnetization of a Biochar Derived from Orange Peel and Its Application for the Removal of Crystal Violet

Sustainable high-efficiency removal of cationic and anionic dyes using new super adsorbent biochar: performance, isotherm, kinetic and thermodynamic evaluation

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