TY - JOUR ID - TI - Adsorption Desulfurization of Actual Heavy Crude Oil Using Activated Carbon AU - Talib M. Albayati AU - Yusra A. Abd Al-Khodor PY - 2020 VL - 38 IS - 10 part (A) Engineering SP - 1441 EP - 1453 JO - Engineering and Technology Journal مجلة الهندسة والتكنولوجيا SN - 16816900 24120758 AB - The strict new regulations to reduce the sulfur content of fuel require new economical and efficient ways to remove the sulfur from the organic sulfur components. In the current work, sulfur was removed from the actual crude oil containing2.5 wt.% from southern Iraq, specifically the Halfaya Oil Field was studied using adsorption desulfurization with activated carbon (AC). The effects of differentoperatingconditions, including the dose of AC (0.2-1.0 gm), time (15–120 min) and temperature (30–50°C)were investigated. The best operating conditions were obtained as 0.8 gm AC, 90 minutes and 50°C, respectively.Langmuir, Freundlich and Temkin isotherm modelswere implemented.The steadydata were best denotedviaTemkin models with correlation coefficient (R2= 0.974). The kinetics sulfur components on activated carbon were examined by using pseudo-first order, pseudo-second order kinetics models and Intra-Particle diffusion. The adsorption process can be well described by pseudo-first order adsorption kinetic model with correlation coefficient (R2= 0.9552). Thermodynamic parameters, which include Gibbs Free Energy (ΔGo), Enthalpy (ΔHo) and Entropy (ΔSo),were determined in the presentresearchand showedthat the adsorption of sulfur components on activated carbon is spontaneous, endothermic and increases the randomness of the sulfur compounds on the surface of the adsorbent. The content of sulfur in the treated crude oil was reducedfrom 2.5% to 1.8% corresponding to a desulfurization efficiency of 28%.

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