有效的Cr (VI) 从皮革厂废水中去除使用Co-Zn铁改性水黄生物炭:机制和优化
M Hedayet Ullah1,2, Mohammad Jellur Rahman3
1Department of Physics, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh.
Environmental monitoring and assessment
|May 5, 2025
概括
一种新的磁性生物炭 (Co-ZnF@WHB) 有效地从污染水中去除有毒的 (VI). 这种可持续材料利用水,提供高效,环保的水资源整治解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 皮革厂的废水由于污染,造成了严重的环境和公共卫生风险.
- 有效的补救策略对于可持续的水资源管理和污染控制至关重要.
研究的目的:
- 开发一种含有Co-Zn铁的水生物炭 (Co-ZnF@WHB),以有效地从污染水中去除 (VI).
- 调查吸附机制,动力学,热力学和优化材料的Cr (VI) 补救.
主要方法:
- 通过热解和HNO3激活的水黄生物炭合成,然后加入Co-Zn铁.
- 使用FTIR和XPS进行表征;在不同的pH值,度和时间下进行吸附实验.
- 使用响应表面方法 (盒式设计) 的优化;动力,同热和热力学分析.
主要成果:
- Co-ZnF@WHB 具有较高的 Cr (VI) 吸附能力 (52.15 mg/g 在合成溶液中, 66.38 mg/g 在制厂废水中).
- 吸附依赖于pH值,化学吸附是限制速度的步骤,单层吸附得到证实.
- XPS分析证实了Cr (VI) 降解为Cr (III),磁性特性使其易于分离.
结论:
- Co-ZnF@WHB是一种高效,可持续和环保的Cr (VI) 整治吸附剂.
- 该材料的磁性特性和高效的吸附机制凸显了其在工业废水处理方面的潜力.
- 优化研究确定了影响Cr (VI) 去除的关键参数,为实际应用铺平了道路.
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