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从塑料和重金属污染的水中生产清洁水,使用对氧化还原敏感的铁纳米粒子载荷生物炭

Zahid Ahmad Ganie¹, Nitin Khandelwal¹, Aniket Choudhary¹

¹Environmental Nanoscience Laboratory, Department of Earth Sciences, Indian Institute of Science Education and Research- Kolkata, Mohanpur, West Bengal, 741246, India.

Environmental research

|July 12, 2023

概括

一种新型的纳米-化铁载生物炭有效地从水中去除纳米塑料和有毒金属离子. 这种可持续材料为复杂的水污染挑战提供了有希望的解决方案.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

水生系统面临着来自纳米塑料 (NP) 和有毒金属离子的不断升级的污染.
这些污染物的综合毒性影响对人类健康构成重大风险.
迫切需要有效的补救策略来解决这个全球性环境问题.

研究的目的:

开发和评估纳米-化铁载糖甘包衍生生物炭 (nZVI-SBC),用于同时去除NP和金属离子.
研究合成材料的去除效率,动力学和机制.
评估材料在复杂的环境矩阵中的适用性.

主要方法:

使用nZVI-SBC.进行了批量和列实验.
各种尺寸和功能的纳米塑料以及金属离子 (Ni2+,Cd2+,AsO43-,CrO42-) 被用作污染物.
描述技术包括FTIR,泽塔潜力,XPS和体过理论 (CFT) 分析.

主要成果:

nZVI-SBC证明了有效的同时去除NP和金属离子.
对于碳酸盐修饰的NP (90.3 mg/g) 和CrO42- (87.8 mg/g) 观察到最大的吸附能力.
该材料在广泛的pH范围和复杂的水性矩阵中显示出高的去除效率 (>90%).

结论:

nZVI-SBC 是一种高效的材料,用于水生环境中同时修复纳米塑料和金属离子.
静电吸引,孔隙保留,复杂化,减少共同沉和表面复杂化是关键的去除机制.
该材料在现实条件下的广泛适用性突出了其在水处理过程中的潜力.

关键词:

生物炭是一种生物炭.重金属是一种重金属.纳米-零价铁的使用方法纳米塑料是一种纳米塑料.整治整治整治整治

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