织废弃物的利用,从受污染的水中去除
Humera Aziz1, Munir Ashraf2, Muhammad Rizwan3
1Department of Environmental Sciences, Government College University, Faisalabad, 38040, Pakistan. humeraaziz.uaf@gmail.com.
Scientific reports
|December 23, 2024
概括
回收的丹尼姆织物有效地使用新型吸附剂 (ODF@H2O2和ODF@O3) 从水中去除. 这些可持续材料具有高吸附能力和可重复使用性,解决了织废物和重金属污染问题.
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:
- 工业和农业的发展导致重金属污染, (Cd) 是全球重要的水污染物.
- 消费后织废物 (PCTW),特别是牛仔,对环境造成了巨大的负担.
- 迫切需要可持续和有效的方法来从水资源中去除重金属.
研究的目的:
- 从回收后消费性织废物 (PCTW) 开发新的吸收材料,用于去除.
- 通过过氧化 (H2O2) 和臭氧 (O3) 处理来研究废旧牛仔布的功能化.
- 评估离子 (Cd2+) 的功能化吸附剂的吸附能力,机制和可重复使用性.
主要方法:
- 在性条件下使用H2O2和O3氧化废旧牛仔布以创建功能组,产生ODF@H2O2和ODF@O3吸附剂.
- 使用富里埃变换红外光谱 (FT-IR),X射线衍射 (XRD),扫描电子显微镜 (SEM) 和能量分散X射线 (EDX) 进行了表面表征.
- 研究了吸附等温,动力学和热力学,以确定吸附机制和Cd2+去除的效率.
主要成果:
- ODF@H2O2吸附剂对Cd2+的最大吸附能力为238.09 mg g−1,超过了ODF@O3吸附剂 (175.44 mg g−1),在20分钟内迅速吸收.
- 化学吸附被证实是Cd2+对两种吸附剂的单层吸附的主要机制,遵循伪二阶和朗穆尔模型.
- 发现吸附过程是内热和自发的. 重要的是,这两种吸附剂在10个再生周期后都保持了90%以上的吸附能力.
结论:
- 经过H2O2或O3氧化功能化的回收丹尼姆织物显示出作为一种有效和可重复使用的吸附剂,用于从污染水中去除的显著潜力.
- 开发的ODF@H2O2和ODF@O3吸附剂为解决重金属污染和织废物问题提供了可持续的解决方案.
- 这些材料对开发用于废水处理应用的实用过器充满希望.
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