Combustion of fossil fuels gives rise to sulfur oxides, which are harmful to the environment. Adsorptive desulfurization (ADS) of diesel was conducted using sewage sludge activated with H₂O₂ as the oxidizing agent. A full 2² central composite response surface design was employed to determine optimum conditions for the production of activated sewage sludge (ASS). The adsorbent (ASS) was characterized using SEM, EDX and FTIR and the results of the analysis showed that it has the capacity to desulfurize diesel significantly. The ASS was subsequently used to conduct batch ADS of diesel with a view to investigate the kinetics, equilibrium and thermodynamics of the process. The optimum conditions established for the production of ASS using H₂O₂ as the oxidizing agent were: temperature 400 °C and holding time 60 min. The Elovich model gave the best fit to the kinetic data of the ADS of diesel using ASS, while the equilibrium study showed that the Freundlich isotherm fitted the data at 35 °C better than Temkin and Langmuir isotherms. The positive values of the free energy and enthalpy changes revealed that the process was non-spontaneous and endothermic, respectively, while the negative entropy change is evidence of decrease in randomness of the adsorbed species. 33% desulfurization was achieved in 100 min during ADS of diesel showing that the adsorbent developed by activating SS with H₂O₂ was very good and effective. Thus, ASS can be used to gain more insight into kinetics, equilibrium and thermodynamics of the ADS of middle-distillate petroleum fractions.

化石燃料的燃烧会产生硫氧化物，对环境有害。以H ₂ O ₂为氧化剂，对污泥进行活化，对柴油进行吸附脱硫(ADS) 。采用完整的 2 ²中心复合响应面设计来确定活性污泥 (ASS) 生产的最佳条件。利用SEM、EDX和FTIR对吸附剂(ASS)进行了表征，分析结果表明其具有显着的柴油脱硫能力。随后使用 ASS 对柴油进行批量 ADS，以研究该过程的动力学、平衡和热力学。以H ₂ O ₂为氧化剂制备ASS的最佳条件为：温度400 ℃，保温时间60 min。 Elovich 模型对使用 ASS 的柴油 ADS 动力学数据进行了最佳拟合，而平衡研究表明 Freundlich 等温线比 Temkin 和 Langmuir 等温线更适合 35 °C 时的数据。自由能和焓变的正值分别表明该过程是非自发的和吸热的，而熵变的负值则表明吸附物质的随机性降低。在柴油ADS过程中，100分钟内脱硫率达到33%，这表明用H ₂ O ₂活化SS开发的吸附剂是非常好的和有效的。因此，ASS 可用于更深入地了解中间馏分石油馏分 ADS 的动力学、平衡和热力学。