Synthesis and Characterization of Acidic Activated Carbon from Corncobs for Adsorption Desulfurization of Simulated Crude Oil

• Autorzy: Oday Yousuf , Al-Jendeel Haider Abdulkareem

Identyfikatory

DOI

10.12911/22998993/189895

• Języki publikacji: EN

Abstrakty

EN

Corncob is an agricultural biomass waste that was widely investigated as an adsorbent of contaminants after transforming it into activated carbon. In this research carbonization and chemical activation processes were achieved to synthesize corncob-activated carbon (CAC). Many pretreatment steps including crushing, grinding, and drying to obtain corncob powder were performed before the carbonization step. The carbonization of corncob powder has occurred in the absence of air at a temperature of 500°C. The chemical activation was accomplished by using HCl as an acidic activation agent. Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) facilitated the characterization of CAC. The results showed the CAC has non-uniform morphological features with different shapes of its active sites. The prepared CAC was utilized in adsorption of sulfur in its highly complex form of dibenzothiophene (DBT). Particular adsorption parameters of contacting time, temperature, and adsorbent dose were optimized to select the best conditions. These certain conditions are then applied in the adsorption of different DBT concentrations. The maximum removal of DBT reached around 83% at optimal conditions of contacting time (30 min), temperature (60°C), and adsorbent dose (3 gL^-1). The removal efficiency was significantly increased by decreasing the initial concentration of DBT. The experimental data fitted well with the Freundlich isotherm model compared with the Langmuir one. The maximum capacity of CAC for adsorption of DBT at equilibrium was 833.3 mg·g^-1 at 60°C. The findings of this research introduce the CAC as a feasible adsorbent for removal DBT from simulated liquid petroleum fuels.

Słowa kluczowe

EN

corncob; biomaterial-adsorbent; acid activation; activated carbon; dibenzothiophene

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2024
• Tom: Vol. 25, nr 8
• Strony: 141--150
• Opis fizyczny: Bibliogr. 40 poz., rys., tab.

Twórcy

autor

Oday Yousuf

• Department of Chemical Engineering, College of Engineering, University of Baghdad, Aljadria, Baghdad, 10071, Iraq

autor

Al-Jendeel Haider Abdulkareem

• Department of Chemical Engineering, College of Engineering, University of Baghdad, Aljadria, Baghdad, 10071, Iraq

• https://orcid.org/0000-0001-8548-9586+

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