Department of Environmental Health Engineering, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran.
Zanjan Pharmaceutical Nanootechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.
Sci Rep. 2024 Nov 27;14(1):29434. doi: 10.1038/s41598-024-80384-4.
Water pollution, particularly from industrial contaminants such as dyes, is a significant global concern. Various technologies, including nanoscale materials, are employed for water and wastewater treatment. Among these, adsorption process as an effective method due to its simplicity, cost-effectiveness, and reliability. This study comprised both theoretical and experimental phases. Initially, computer simulations were utilized to evaluate the interaction between methylene blue and three selected nanoparticles, ultimately choosing Bovine Serum Albumin protein nanoadsorbent based on energy considerations. Subsequently, adsorption experiments were conducted using this nanosorbent. The results indicated a maximum dye removal efficiency of 69% under the conditions of pH 11, an initial dye concentration of 100 mg/L, an adsorbent dose of 0.5 g/L, a contact time of 60 min, and an optimal temperature of 25 °C. The maximum adsorption capacity under optimal conditions was found to be 38.52 mg/g. Additionally, the adsorption isotherm followed the Langmuir equation, and the kinetics adhered to the pseudo-second-order model.
水污染，特别是来自工业污染物（如染料）的水污染，是一个全球性的严重问题。各种技术，包括纳米材料，都被用于水和废水处理。在这些技术中，吸附法作为一种简单、经济、可靠的有效方法得到了广泛应用。本研究包括理论和实验两个阶段。首先，利用计算机模拟评估了亚甲蓝与三种选定的纳米粒子之间的相互作用，最终基于能量考虑选择了牛血清白蛋白蛋白纳米吸附剂。随后，使用这种纳米吸附剂进行了吸附实验。结果表明，在 pH 值为 11、初始染料浓度为 100mg/L、吸附剂剂量为 0.5g/L、接触时间为 60min 和最佳温度为 25°C 的条件下，染料的去除效率最高可达 69%。在最佳条件下，最大吸附容量为 38.52mg/g。此外，吸附等温线遵循朗缪尔方程，动力学符合拟二级模型。
