在松外上竞争性重金属吸附:固定床柱和表面相互作用洞察力的数学建模
Marwa Ben Amar1, Maryam Mallek1, Abel Valverde2
1Laboratory of Material Sciences and Environment, Faculty of Science, University of Sfax, Tunisia.
The Science of the total environment
|January 28, 2024
概括
松树有效地从废水中去除有毒的重金属,如和铜,使用固定床柱系统. 这种具有成本效益的生物吸收剂显示出对工业废水处理和再生的前景.
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:
- 由于重金属污染,工业废水对环境构成重大风险.
- 有效和可持续的重金属清除方法对于环境保护至关重要.
- 生物吸收剂为传统废水处理方法提供了经济高效和环保的替代方案.
研究的目的:
- 评估松树作为生物吸收剂,用于从固定床柱中的水溶液中去除多重金属离子.
- 调查操作参数对生物吸收效率的影响.
- 了解吸附机制,并评估生物吸收剂的再生潜力.
主要方法:
- 固定床柱实验使用松树作为生物吸收剂进行.
- 影响度,床高度和流量是不同的,以优化移除效率.
- 用Sips模型分析了吸附数据,以阐明吸附机制.
- 福利埃变换红外线 (FTIR) 和X射线衍射 (XRD) 用于表征.
- 使用盐酸溶液进行了再生研究.
主要成果:
- 松树表现出高吸附能力的 (Pb) 在66毫克/g和铜 (Cu) 在11.1毫克/g.
- Sips模型准确地描述了突破数据,表明了表面复杂化机制.
- 多金属溶液中的金属吸收序列是Pb (II) > Cu (II) > (Cd (II)).
- 松外上的基和基功能组被确定为关键的相互作用点.
- 生物吸收剂与盐酸一起显示出有效的再生能力.
结论:
- 松树是一种具有成本效益和高效的生物吸收剂,用于从工业废水中去除有毒重金属.
- 使用松贝的固定床柱系统适用于现实世界的环境修复.
- 表面复杂化是松外重金属吸附的主要机制.
- 生物吸收剂的再生提高了其经济可行性和废水处理的可持续性.
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