氨基交叉连接的红素,用于可归因于有机染料修复的水污染:用于选择性去除染料和可重复使用的多功能吸附剂
Do Hun Oh1, Ji Won Heo1, Qian Xia1
1Department of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea.
Heliyon
|September 18, 2024
概括
氨基化增强了木质素的功能,产生了氨基-交叉链接的木质素,以有效地去除染料. 这种可持续材料显示出阴离子和阴离子染料的稳定,可重复吸附,为废水处理提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 一种天然聚合物 - - 氨酸 (lignin) 的利用不足.
- 需要有效的方法来增值红素.
- 废水中的染料污染给环境带来了挑战.
研究的目的:
- 通过氨基化来增强红素的功能.
- 为了研究氨基酸交叉连接的红素对染料的吸附特性.
- 探索可持续的废水处理解决方案.
主要方法:
- 氨酸氨化以产生氨酸交叉连接的氨酸.
- 化学结构分析 (FTIR,GPC,TGA) 来确认修改.
- 用刚果红色和甲基绿色进行染料吸附实验 (动力学,异温体).
- 吸附能力,选择性和可重复使用性的评估.
主要成果:
- 成功的氨化和改进的素特性 (分子量,热稳定性).
- 与 kraft 素相比,氨基交联素的特定表面积更大.
- 阳离子和阴离子染料的优良和选择性吸附.
- 吸附遵循伪二阶动力学和兰木尔/弗朗德利希等热量.
- 在五个周期中稳定且可重复的吸附效率.
结论:
- 氨基交叉连接的红素显示出高效的染料去除的巨大潜力.
- 该材料为废水整治提供了可持续和可重复使用的解决方案.
- 静电相互作用是主要的吸附机制.
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