通过金黄色葡萄球菌 (Staphylococcus aureus CC1956) 有效地去除Cr (VI) 离子:生物吸收异温和动力建模
Kaoutar Harboul1, Halima Amakdouf2, Khalil Hammani1
1Natural Resources and Environment Laboratory, Polydisciplinary Faculty of Taza, Sidi Mohamed Ben Abdellah University, Fez, Morocco.
概括
金色葡萄球菌CC1956通过生物吸收有效地去除有毒的六价 (Cr(VI)). 这种细菌菌株显示出显著的Cr6降低和结合,为污染的废水提供了有希望的生物修复解决方案.
科学领域:
- 环境微生物学 环境微生物学
- 生物修复技术 生物修复技术
- 毒理学 毒理学 毒理学
背景情况:
- 六价 (Cr(VI)) 是一种严重的环境污染物,具有重大健康风险.
- 细菌生物吸收提供了一种从水溶液中去除Cr (VI) 的潜在方法.
- 黄金葡萄球菌,虽然研究较少,但表现出Cr (VI) 减少和结合能力.
研究的目的:
- 为了评估Cr (VI) 去除的Staphylococcus aureus CC1956的生物吸收潜力.
- 确定S. aureus CC1956.6对Cr (VI) 生物吸收的最佳条件.
- 阐明Cr (VI) 生物吸收的机制和动力学.
主要方法:
- 使用S. aureus CC1956在不同pH值,温度和初始Cr (VI) 度下的生物吸收实验.
- 分析Cr(VI) 去除效率和吸附动力学的分析.
- 福利埃变换红外光谱 (FTIR) 和使用能量分散X射线 (SEM-EDX) 的扫描电子显微镜用于机制阐明.
主要成果:
- S. aureus CC1956在pH值5.0-9.0和温度25-45°C之间显示出显著的Cr (VI) 去除.
- 添加葡萄糖增强了Cr (VI) 的去除,而竞争的离子的影响最小.
- 兰慕尔的异热模型最好地描述了单层吸附,其中含有基,基,基和氨基组.
结论:
- 金黄色葡萄球菌CC1956是一种强大的生物吸收剂,用于Cr6的去除.
- 这项研究证实了Cr(VI) 与细菌细胞表面的关联.
- S. aureus CC1956显示出对被Cr (VI) 污染的废水进行生物修复的前景.
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