通过生物炭/纳米颗粒氧化铁矿物复合物去除:在批量和列系统下机械洞察力和性能
Hamna Bashir1, Nabeel Khan Niazi1, Zulfiqar Ahmad Saqib1
1Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan.
International journal of phytoremediation
|June 28, 2025
概括
与纳米颗粒铁氧化物 (NP-FeOx) 结合的米生物炭有效地从水中去除六价 (Cr(VI)). 这些新型复合材料为处理废水中污染提供了可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 水处理技术水处理技术
背景情况:
- 六价 (Cr(VI)) 对水生生态系统和人类健康构成重大威胁.
- 传统的Cr6去除方法往往是昂贵和低效的.
- 开发新型,成本效益高,可持续的吸附材料对于水资源整治至关重要.
研究的目的:
- 合成各种纳米颗粒铁氧化物 (NP-FeOx),包括纳米磁铁 (n-Mg),纳米戈希特 (n-Gh),纳米铁 (n-Fh) 和纳米血 (n-Ht).
- 开发大米生物炭/NP-FeOx复合物 (BC/NP-FeOx) 来增强从污染水中去除Cr (VI).
- 在批量和列实验中评估合成材料的性能.
主要方法:
- 四种NP-FeOx的合成及其随后与大米皮生物炭的整合.
- 批量吸附实验以确定Cr (VI) 清除效率和最佳条件 (pH,吸附剂剂量).
- 在动态条件下评估BC/NP-FeOx复合材料在动态条件下的性能的列实验.
- 里埃变换红外光谱 (FTIR) 探讨吸附机制.
主要成果:
- 在批量测试中,纳米戈希特 (n-Gh) 和纳米磁铁 (n-Mg) 显示出最高的Cr (VI) 去除效率 (>95%).
- 开发的BC/n-Gh和BC/n-Mg复合物在柱体研究中显示出出色的Cr (VI) 去除效率 (97%-99%).
- 溶解研究表明,n-Gh和n-Mg在三个周期内具有良好的可重复使用性.
- FTIR分析证实,Cr (VI) 的吸附主要由-OH离子交换和与-C-H,-C=O和-Fe-O等功能群的相互作用来控制.
结论:
- 米皮生物炭/纳米颗粒氧化铁复合物对于从污染水中去除Cr6的效果非常高.
- 开发的BC/n-Gh和BC/n-Mg复合材料代表了对废水处理的有希望的,可持续的技术.
- 这些发现突出了基于生物炭的纳米复合材料在解决环境污染挑战方面的潜力.
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