Rhodococcus hx-2 has the potential to adsorb heavy metal ions in water treatment as a potential bioadsorbent. The purpose of this study was to optimize the adsorption conditions and adsorption mechanism of lead ions in water by Rhodococcus hx-2, and to provide a theoretical basis for its application in the field of water treatment.
The influencing factors of lead ion adsorption in water by Rhodococcus hx-2 were systematically studied, including the amount of adsorbent, the initial concentration of lead ions, and the pH value of the solution. Through the response surface method and batch adsorption experiments, the optimal adsorption conditions were determined to improve the adsorption efficiency and adsorption capacity of lead ions.
Secondly, scanning electron microscopy and Fourier transform infrared spectroscopy were used to study the mechanism of lead ion adsorption by Hx-2 in Rhodococcus. The results showed that Rhodococcus HX-2 mainly adsorbed lead ions through charge attraction and complexation, and participated in the adsorption process through functional groups such as hydroxyl and carboxyl groups.
Based on the results of mechanistic studies, a model of lead ion adsorption in water by Rhodococcus HX-2 was established, which provided theoretical support for further optimizing the application of Rhodococcus Hx-2 in water treatment. At the same time, the research results also provide an important reference for the development of high-efficiency water treatment technology based on bioadsorbents.
As a potential bioadsorbent, Rhodococcus HX-2 has good adsorption performance and application prospects, and through the optimization of its adsorption conditions and the study of adsorption mechanism, it can better play its role in water treatment and provide technical support for environmental protection and water resource management.
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