模块化水凝选择性地吸附酸盐和六价,同时使酸盐恢复成为可能
Miao Su1, Jiabao Hu1, ZiSheng Liu1
1Heilongjiang Provincial Key Laboratory of Environmental Nanotechnology, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China.
Journal of colloid and interface science
|November 9, 2024
概括
一种新的模块化水凝,LC-CSP,有效地从电废水中去除酸盐和六价 (Cr(VI)). 这种材料显示出高吸附能力,可重复使用性和回收潜力,解决了关键的环境挑战.
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:
- 电废水由于高度的酸盐和六价 (Cr(VI)) 构成重大环境风险.
- 的回收对于可持续发展至关重要,因为是不可再生资源.
- 现有的处理方法往往缺乏复杂的废水流的效率或可重复使用性.
研究的目的:
- 开发一种高效的吸附剂,同时从电废水中去除酸盐和CrVI.
- 研究从经过处理的废水中回收的可能性.
- 评估开发的吸附材料的性能和可重复使用性.
主要方法:
- 制造一个模块化凝 (LC-CSP),使用酸盐,酸盐,酸碳酸盐和聚乙烯胺 (PEI).
- 描述水凝的结构,形态和吸附特性.
- 在各种条件下测试酸盐和CrVI的吸附能力和去除效率,包括模拟带有干扰物质的废水.
- 评估水凝在多个吸附-脱附周期中的可重复使用性.
- 使用多种表征技术研究吸附机制.
- 进行固定床吸附实验,以评估实际适用性.
主要成果:
- 这种LC-CSP水凝具有很高的吸附能力:酸盐为232.02 mg/g,酸盐为474.61 mg/g.
- 该材料的可重复使用性很好,在五个循环后保持了超过83%的性能.
- 在含有干扰物质的模拟废水中,这两种污染物都保持了高的去除效率 (>90.72%).
- 吸附机制涉及连接物交换,静电相互作用和酸盐的结合,以及静电相互作用,结合和Cr (VI) 的减少.
- 固定床实验证实了LC-CSP用于电废水处理和回收的技术可行性.
结论:
- 制造的LC-CSP模块化水凝是从电废水中同时去除酸盐和Cr (VI) 的有希望的材料.
- 该研究强调了从工业废水中回收资源 () 的潜力.
- LC-CSP表现出卓越的稳定性,可重复使用性和效率,表明其在实际环境应用中的巨大潜力.
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