通过使用模拟含铜废水制备的交联酸盐吸附剂去除Cr (VI)
Shikuan Xu1, Yanjia Wang2, Mengru Wei1
1College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
International journal of biological macromolecules
|November 8, 2024
概括
与铜离子交联的奇托水凝珠有效地从废水中吸附六价 (Cr(VI)). 这种可持续吸附剂显示出高容量和可重复使用性,促进重金属回收利用.
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:
- 废水处理需要有效的方法来去除重金属.
- 基于酸盐的材料由于其功能组,具有吸附的潜力.
- 废水中的铜污染需要有效的整治策略.
研究的目的:
- 为了合成和表征酸盐-铜 (CS-Cu-B) 水凝珠,用于吸附六价 (Cr(VI)).
- 研究CS-Cu-B形成和Cr (VI) 吸附的最佳条件.
- 探索CS-Cu-B的吸附机制,动力学,热力学和可重复使用性.
主要方法:
- 来自模拟废水的Cu2+离子交联的奇托水凝珠的合成.
- 优化CS-Cu-B的形成条件 (Cu2+度,pH,温度).
- 吸附实验以评估Cr (VI) 去除效率,动力学,同热,热力学和可重复使用性.
- 描述和DFT计算以阐明吸附机制.
主要成果:
- 在1500 mg/L Cu2+,pH 5.4 和50°C下达到最佳的CS-Cu-B形成.
- 在pH值为4.0的情况下,最大Cr(VI) 吸附能力为90.76 mg/g.
- 高可重复使用性,在五个循环后保持87.90%的容量.
- 电静电吸引被确定为主要吸附机制.
结论:
- CS-Cu-B 水凝珠是有效的吸附剂,用于从废水中去除Cr (VI).
- 该材料具有出色的吸附能力和可回收性.
- 为从工业废水中回收重金属提出了一种连续的制备-吸附策略.
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