重金属离子 (II) 通过含有硫基的纤维素基吸附剂进行吸附
Tatiana Nikiforova1, Vladimir Kozlov2, Pavel Razgovorov3
1Department of Food Technology and Biotechnology, Ivanovo State University of Chemistry and Technology, Sheremetievskiy Avenue, 7, Ivanovo 153000, Russia.
Polymers
|November 14, 2023
概括
经过化学修饰的亚麻纤维有效地从水中去除铜,和铁等重金属. 这种新型纤维素衍生物为工业废水净化提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 生物技术是生物技术.
背景情况:
- 重金属污染对水生生态系统和人类健康构成重大风险.
- 开发高效和可持续的吸附材料来去除重金属对于环境保护至关重要.
- 亚麻纤维是一种可再生生物质,是开发新型吸收材料的潜在来源.
研究的目的:
- 为了化学修改短的亚麻纤维,以提高它们对重金属离子的吸附性能.
- 合成一种能够与重金属离子形成酸盐复合物的新型纤维素衍生物.
- 通过使用改性亚麻纤维,研究Cu (II),Cd (II) 和Fe (II) 离子的吸附效率和机制.
主要方法:
- 亚麻纤维素通过氧化与甲基酸盐的化学修饰,以形成二甲基纤维素.
- 用1-amino-8-hydroxynaphthalene-3,6-disulfonic 酸进一步衍生了二甲基纤维素.
- 使用初级和改性亚麻纤维吸附剂对重金属离子吸附的平衡和动力学研究.
- 使用扫描电子显微镜 (SEM) 和红外 (IR) 光谱学对修饰 Sorbents 的表征.
主要成果:
- 在SEM分析中,修改后的亚麻纤维表面形态发生了显著的变化.
- 红外光谱学证实了引入的氨基和硫基组的存在,表明成功的化学修饰.
- 经过修改的亚麻纤维衍生物证明了从水溶液中有效吸附Cu (II),Cd (II) 和Fe (II) 离子.
- 均衡和动力学研究提供了对改性吸附剂的吸附能力和吸附率的见解.
结论:
- 短线亚麻纤维的化学修饰显著提高了它们对重金属离子吸附的能力.
- 开发的纤维素衍生物在去除Cu (II),Cd (II) 和Fe (II) 离子方面是有效的,显示了废水处理的潜力.
- 该方法为净化工业水溶液从重金属污染中提供了一种有希望和可持续的方法.
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