Fe3O4/BC 用于从水中去除甲蓝:优化,热力学,同温和运动研究
Sharf Ilahi Siddiqui1,2, Naha Meslet Alsebaii3, Azza A Al-Ghamdi4
1Environmental Chemistry Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
Materials (Basel, Switzerland)
|May 14, 2025
概括
来自黑种子的新型磁性纳米生物吸收剂有效地从水中去除甲蓝色染料. 这种环保材料显示出高效率和废水处理应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 纳米技术 纳米技术
背景情况:
- 有机污染物,如甲蓝染料,构成重大环境风险.
- 开发具有成本效益和可持续的吸附剂对于水资源整治至关重要.
- 黑子种子提供了天然的,丰富的碳来源,用于吸附剂合成.
研究的目的:
- 从黑种子中合成和表征一个纳米级的磁性生物吸收剂 (Fe3O4/BC).
- 评估Fe3O4/BC在从合成溶液中去除甲蓝 (MB) 染料方面的效率.
- 评估开发的纳米生物吸收剂的可重复使用性和吸附机制.
主要方法:
- 集成到黑 (BC) 碳框架中的磁纳米粒子 (Fe3O4 NPs) 的合成.
- 批量吸附实验以确定最佳条件 (pH,温度,接触时间,吸附剂剂量).
- 吸附异温研究 (弗朗德利希模型) 和通过多个吸附-脱吸循环的可重复使用性测试.
主要成果:
- Fe3O4/BC表现出广泛的表面氧化功能组,增强了MB染料捕获.
- 在优化条件下,使用2.0g的L-1 Fe3O4/BC,从10mg的L-1初始度中实现了~99%的MB去除.
- 观察到高吸附能力的29.0毫克g-1在60.0毫克L-1初始MB度.
- 吸附遵循弗洛伊德利希模型,表明异质的表面相互作用.
- 可重复使用性测试显示,在六个循环后,去除效率下降了66%.
结论:
- 合成的Fe3O4/BC纳米生物吸收剂是一种低成本,环保和有效的材料,用于去除有机污染物.
- 与之前报告的基于BC的吸附剂相比,Fe3O4/BC显示出更高的分割系数.
- 这种磁性纳米生物吸收剂显示出在废水处理和水净化中应用的巨大潜力.
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