使用新型的PPG-CNTs-nZVI珠子同时去除氨酸和Pb
Xiaoran Zhang1,2, Haoyu Du1, Chunxia Wang2,3
1Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 102616, China.
Environmental science and pollution research international
|April 13, 2024
概括
新的聚乙烯醇,石,碳纳米管和 guar gum-nanoscale零价值铁 (PPG-CNTs-nZVI) 珠子有效地同时去除多环芳 (PAH) 和重金属. 这些珠子显示出高吸附能力和协同效应,用于从污染水中去除污染物.
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:
- 多环芳 (PAH) 和重金属对水生生态系统构成重大风险.
- 同时去除各种污染物对于有效的水资源整治至关重要.
研究的目的:
- 为了合成和评估聚乙烯醇,石,碳纳米管和 guar gum-nanoscale零价值铁 (PPG-CNTs-nZVI) 珠子,同时去除PAH和重金属.
- 调查和Pb2+去除的吸附动力学,异温和影响因素 (pH,离子强度).
主要方法:
- 合成PPG-CNTs-nZVI珠子的方法.
- 批量吸附实验,以确定脱离效率,动力学和和Pb2+的异温.
- 在不同初始度,pH值和离子强度下评估吸附性能.
主要成果:
- PPG-CNTs-nZVI珠子表现出高吸附能力的 (高达0.16毫克/克) 和Pb2+ (高达11.6毫克/克).
- 在30分钟内观察到85%的氨酸的有效去除.
- 吸附遵循兰穆尔模型,并在广泛的pH范围 (2-5) 和离子强度中表现出稳定性.
- 在协同吸附过程中观察到协同效应,由于Pb2+复合物的形成而增强的亲和力.
结论:
- PPG-CNTs-nZVI珠子是有效的吸附剂,可以同时去除PAH和重金属.
- 协同作用的相互作用提高了共存污染物的去除效率.
- 这些发现突显了PPG-CNTs-nZVI珠子在水处理应用中的潜力.
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