Adsorbents originated from biological materials play a vital role in the remediation of diverse toxic pollutants due to their high efficacy, low cost and being environmentally friendly. The present study focusses on the palm shell activated carbon obtained from agricultural waste precursor (palm shell) with the aid of oleic acid activation along with ultrasonic assistance and its effective utilization for acenaphthene adsorption from aqueous and real effluent. The synthesized Ultrasonic assisted palm shell activated carbon (UAC) possessed high surface area of 506.84 m²/g and distinct porous structure as depicted by SEM analysis. The outcomes of zero discharge analyses and acenaphthene adsorption results vouchsafed that, using oleic acid as an effective catalyst, is explicitly advantageous to combine with ultrasonic assistance to fabricate a highly efficient adsorbent for acenaphthene removal from aqueous solution. The UAC obtained at the selected parameters levels, such as temperature of 45 °C and ultrasonic time of 40 min, has the adsorption capacity of 52.745 mg/g. Sips isotherm model computed from the experimental data gave the best fit among the examined isotherm models. To complete the study of adsorption properties of UAC towards acenaphthene, kinetic modeling and thermodynamic aspects of the adsorption process were also scrutinized. The kinetic studies proved that pseudo-second order model is compatible with the experimental data and thermodynamic results revealed that the adsorption process is of endothermic nature. Overall, ultrasonic-assisted preparation of activated carbon from palm shell actuated using Oleic acid was found to be a highly efficient adsorbent which was suitable for acenaphthene removal from aqueous solution.

源自生物材料的吸附剂由于其高效、低成本和环境友好，在多种有毒污染物的修复中发挥着至关重要的作用。本研究的重点是在油酸活化和超声波辅助下从农业废物前体（棕榈壳）中获得的棕榈壳活性炭及其有效利用水和实际废水中的苊吸附。合成的超声波辅助棕榈壳活性炭 (UAC) 具有 506.84 m ^{2 的}高表面积/g 和明显的多孔结构，如 SEM 分析所示。零排放分析结果和苊吸附结果表明，使用油酸作为有效催化剂，与超声辅助结合制备高效吸附剂用于从水溶液中去除苊。在选定的参数水平下获得的 UAC，如温度为 45°C，超声时间为 40 分钟，吸附容量为 52.745 mg/g。从实验数据计算的 Sips 等温线模型在所检查的等温线模型中给出了最佳拟合。为了完成 UAC 对苊的吸附特性的研究，还仔细研究了吸附过程的动力学模型和热力学方面。动力学研究证明伪二级模型与实验数据相吻合，热力学结果表明吸附过程具有吸热性质。总体而言，发现使用油酸驱动的棕榈壳超声辅助制备活性炭是一种高效的吸附剂，适用于从水溶液中去除苊。