用兰加载的生物炭基酸盐水凝用于有效地从废水中吸附酸盐
Fuqiang Fan1, Shenghao Zhang1, Xinfeng Zhao2
1Guangdong-Hong Kong Joint Laboratory for Water Security, Beijing Normal University, Zhuhai 519087, China; Center for Water Research, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, China.
International journal of biological macromolecules
|February 24, 2025
概括
一种新型的带有的生物炭基酸盐凝 (La@SA@BC) 有效地从水中去除酸盐. 这种材料具有很高的吸附能力和选择性,这使得它对水的修复有很大的希望.
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:
- 酸盐污染对水生生态系统构成重大威胁.
- 开发高效和有选择性的吸附剂来去除酸盐至关重要.
研究的目的:
- 为了制造和表征一种含的生物炭基酸盐水凝 (La@SA@BC) 用于酸盐吸附.
- 评估La@SA@BC水凝的吸附能力,效率和机制.
主要方法:
- 在最佳的1:1质量比下制造La@SA@BC水凝.
- 酸盐吸附实验以确定在不同条件下 (pH,竞争离子) 的容量和效率.
- 使用SEM和FTIR等技术对水凝形态,组成和功能组进行表征.
- 动力分析以阐明吸附机制.
主要成果:
- 在0.9 g/L的吸附剂剂量下,最大酸盐吸附能力为56.5 mg/g.
- 在pH 3下90%的酸盐去除效率,在有竞争性离子的存在下最小的减少 (<10%).
- 伪二阶模型匹配 (R2 = 0.95) 表明化学吸收作为主要机制.
- 描述证实了粗的,折叠的表面结构与内部空洞和均的分布.
结论:
- La@SA@BC水凝具有高选择性,强大的离子耐受性和强大的酸盐吸附能力.
- 多种吸附机制,包括静电相互作用,连带交换,沉和孔隙填充,有助于酸盐的去除.
- La@SA@BC水凝是修复酸盐污染水的有希望的候选者.
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