This study aims to remove zinc by using banana peel from an aqueous medium. The peel was a lignocellulosic adsorbent and characterized by FTIR spectra, SEM–EDS images, and elemental analysis. The effect of contact time, pH, and adsorbent dosage on the sequestration of zinc was observed. The sorption process of zinc was well described with the pseudo–second-order kinetic and Langmuir isotherm model. The rate-limiting step to the adsorption process was determined by applying the intra-particle diffusion model. The removal mechanism is that ion exchange, electrostatic interaction, complex formation, physical adsorption, and precipitation carried out in cooperation with the banana peel functional groups and zinc ion in many ways. FTIR analysis demonstrates that the surface carboxylic/hydroxyl functional groups of banana peel play a key role in the adsorption of zinc ions. The results showed that banana peel, a locally available fruit residual, is an efficient and eco-friendly adsorbent to reduce Zn²⁺. The usage of banana peel as an adsorbent for the sequestering of zinc from water ensures both the technical advantage and cost-effectiveness of the sustainable environmental management concept and zero waste strategy. Furthermore, the value-added products containing organic compounds and zinc can be used efficiently as a soil conditioner.

本研究旨在通过使用香蕉皮从水性介质中去除锌。果皮是一种木质纤维素吸附剂，并通过 FTIR 光谱、SEM-EDS 图像和元素分析进行​​表征。观察了接触时间、pH 值和吸附剂剂量对锌螯合的影响。锌的吸附过程可以用拟二级动力学和朗缪尔等温线模型很好地描述。通过应用颗粒内扩散模型确定吸附过程的限速步骤。去除机理是与香蕉皮官能团和锌离子以多种方式协同进行离子交换、静电相互作用、络合物形成、物理吸附和沉淀。FTIR 分析表明，香蕉皮表面的羧基/羟基官能团在锌离子的吸附中起关键作用。结果表明，香蕉皮是一种当地可用的水果残留物，是一种有效且环保的吸附剂，可减少锌²⁺。使用香蕉皮作为吸附剂从水中螯合锌，确保了可持续环境管理概念和零废物战略的技术优势和成本效益。此外，含有有机化合物和锌的增值产品可以有效地用作土壤调节剂。