基于耐酸铁污泥的飞灰地质聚合物泡,用于高效地去除,具有pH自我调节
Huiping Zeng1, Jiongru Liang1, Simin Li1
1Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, China.
Environmental research
|July 25, 2025
概括
一种基于铁污泥的新型地质聚合物泡有效地从酸性废水中去除. 这种废物到废物解决方案提供了高吸附能力和出色的再生环境修复.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 含有酸的废水对环境和健康构成重大风险.
- 有效和可持续的处理方法对于管理有毒工业副产品至关重要.
- 工业固体废物,如飞灰和铁污泥,存在处理方面的挑战.
研究的目的:
- 从工业固体废物中开发一种新型吸附材料,用于酸废水处理.
- 研究基于飞灰的地质聚合物泡和铁污泥对吸附的协同作用.
- 在容量,动力学,再生和连续流处理方面评估吸附剂的性能.
主要方法:
- 基于铁泥的飞地质聚合物泡 (IS-BFGF) 的合成,比例不同.
- 吸附剂的结构,成分和表面特性 (例如,SEM,XRD,BET) 的表征.
- 批量吸附实验以确定吸附等温度 (Sips模型) 和动力学 (伪二阶模型).
- 连续废水处理和通过吸附-脱附循环评估再生效率的专研究.
主要成果:
- 飞灰/铁污泥的最佳比率为 4:1,产生具有分散的氧化铁和丰富的Fe-OH活性位点的材料.
- 吸附剂在酸性条件下达到77 ± 9 mg/g的最大吸附能力和98.34%的去除能力 (pH 2.5).
- 吸附遵循Sips模型和伪二阶动力学,表明化学协调相互作用.
- 证明了出色的再生 (>95%在5个循环后去除) 和持续治疗能力 (2340张床量).
结论:
- IS-BFGF是一种高效的吸附剂,用于从酸性废水中去除,利用工业固体废物.
- 该材料的性能归因于协同效应,丰富的活性部位和有利的孔隙结构.
- 这项研究提出了一个有前途的"废物处理废物"战略,用于环境修复和资源利用.
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