Hephaestus Laboratory, Department of Chemistry, International Hellenic University, GR-65404, Kavala, Greece.
Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia.
Environ Sci Pollut Res Int. 2023 Nov;30(53):114032-114043. doi: 10.1007/s11356-023-30342-w. Epub 2023 Oct 19.
Concern for environmental protection has increased throughout the years from a global perspective. To date, the predominance of adsorption as treatment technique in environmental chemistry remains unchallenged. Moreover, the scientific attention for investigating nanobubbles due to their unique properties has turned the search for their application in environmental processes with special emphasis on water treatment. This study is aimed at investigating the effect of rotation on batch adsorption process using commercial activated carbon as adsorbent material, compared with the widely used method of agitation. As liquid medium, deionized water and deionized water enhanced with nanobubbles (of air) were used. The wastewater was simulated by dissolving a common dye as model pollutant, methylene blue, at concentration of 300 mg/L in the tested liquid. The results indicated that the utilization of nanobubbles resulted in an improvement on adsorption rate, compared to the corresponding values of deionized water solutions. These results may lead to promising applications in the future, since just 1 h of operation increases the water purification and thus provides a simply applied, cost-effective, and rapid alternative.
多年来，从全球角度来看，人们对环境保护的关注日益增加。迄今为止，吸附作为一种处理技术在环境化学中仍然占据主导地位，这一点尚未受到挑战。此外，由于纳米气泡具有独特的性质，科学界对其进行了研究，这使得人们对它们在环境过程中的应用产生了兴趣，特别是在水处理方面。本研究旨在研究使用商业活性炭作为吸附剂材料的批量吸附过程中的旋转对其的影响，与广泛使用的搅拌方法进行了比较。实验使用去离子水和去离子水增强纳米气泡（空气）作为液体介质。废水通过在测试液体中溶解 300mg/L 的常见染料亚甲基蓝作为模型污染物来模拟。结果表明，与去离子水相应的值相比，纳米气泡的使用提高了吸附速率。这些结果可能为未来的应用提供了有希望的途径，因为仅 1 小时的操作就提高了水的净化程度，从而提供了一种简单应用、具有成本效益和快速的替代方法。
