Oil palm empty fruit bunch (OPEFB) is a solid waste abundantly produced by the palm oil industry. This study aimed to prepare a film adsorbent from OPEFB-based charcoal (OC), embedded into chitosan-ethylenediaminetetraacetic acid (EDTA) matrix (OC/Chi-EDTA) through a simple phase inversion technique for Cd (II) removal. Based on the tensile strength (20.4 kgf/mm²) and adsorption capacity (66.6 mg/g), the material with 0.85 : 0.1: 0.15 was selected as the best film adsorbent using simple additive weighting. Further, the sample was characterized for its functional group, morphology, crystallinity, and thermal behavior. The characterizations revealed the successful preparation of OC/Chi-EDTA with advantageous properties for Cd (II) adsorptive removal such as rough surface morphology and amorphous structure (crystallinity = 41.02). Good thermal stability of OC/Chi-EDTA was also suggested by the T_peak of the first composite degradation at 298.97°C. At equilibrium, the adsorption isotherm best fitted with the Langmuir isotherm model (R² = 0.992; root-mean-square error = 2.75), where the maximum adsorption capacity was 283.33 mg/g. Investigation on the adsorption mechanisms found that electrostatic attraction and complexation were responsible for the Cd (II) uptake. At the optimum conditions (contact time = 120 min; pH 7), the adsorption capacity was recorded to be 67.2 mg/g with a removal efficiency of 99.56%. Regeneration studies suggested that OC/Chi-EDTA can be used up to four cycles (removal efficiency > 75%). In conclusion, the OC has been successfully embedded into chitosan-EDTA matrix resulting in a film adsorbent that could perform a high Cd (II) uptake.

油棕空果束（OPEFB）是棕榈油工业大量产生的固体废物。这项研究的目的是通过简单的相转化技术去除Cd（II），由基于OPEFB的木炭（OC）制备膜吸附剂，将其嵌入壳聚糖-乙二胺四乙酸（EDTA）基质（OC / Chi-EDTA）中。基于抗拉强度（20.4 kgf / mm ²）和吸附量（66.6 mg / g），采用简单的添加剂加权，选择0.85：0.1：0.15的材料作为最佳薄膜吸附剂。此外，对样品的官能团，形态，结晶度和热行为进行了表征。表征表明成功制备了OC / Chi-EDTA，具有对Cd（II）吸附去除的有利性能，例如粗糙的表面形态和无定形结构（结晶度= 41.02）。在298.97°C时第一次复合降解的T_峰也表明OC / Chi-EDTA具有良好的热稳定性。在平衡状态下，最佳吸附等温线与Langmuir等温线模型（R ² = 0.992; 均方根误差= 2.75），其中最大吸附容量为283.33 mg / g。对吸附机理的研究发现，静电吸引和络合是Cd（II）吸收的原因。在最佳条件下（接触时间= 120分钟； pH为7），记录的吸附容量为67.2 mg / g，去除效率为99.56％。再生研究表明，OC / Chi-EDTA最多可使用四个周期（去除效率> 75％）。总之，OC已成功地嵌入到壳聚糖-EDTA基质中，从而产生了可以吸收高Cd（II）的薄膜吸附剂。