研究新型基质复合材料对重金属去除和病原体无活化的协同作用
Zaib-Un Nisa1, Sana Zulfiqar1, Aliya Fazal2
1Department of Environmental Sciences, Fatima Jinnah Women University, The Mall, Rawalpindi, 46000, Pakistan.
Chemosphere
|August 11, 2023
概括
从包灰中绿色合成的纳米颗粒有效地从废水中去除和等重金属. 这些环保纳米材料还具有抗微生物特性,增强了废水处理潜力.
科学领域:
- 纳米技术和材料科学 材料科学
- 环境工程 环境工程
- 绿色化学 绿色化学
背景情况:
- 对环境应用的可持续纳米材料合成越来越感兴趣.
- 需要有效的方法来去除工业废水中的重金属离子.
- 纳米粒子为污染物修复提供了潜在的可能性.
研究的目的:
- 为了合成和表征纳米颗粒 (S) 和/酸盐复合物 (SCs) 从灰.
- 评估这些生物材料在废水中去除和的效率.
- 评估合成材料的抗菌性质.
主要方法:
- 通过sol-gel方法从包灰中提取.
- 用奇托修改二氧化的方法.
- 使用X射线粉末衍射 (XRD),里埃变换红外光谱 (FTIR) 和扫描电子显微镜 (SEM) 的表征.
- 通过封闭批量实验评估的重金属去除效率.
- 使用异热和动力模型研究了吸附机制.
- 对尼日尔菌,大肠杆菌和金黄色葡萄球菌进行了抗菌活性测试.
主要成果:
- 纳米粒子 (S) 实现了88%的去除效率.
- 在56分钟内达到吸附平衡,遵循兰格穆尔等温和伪二次动力学.
- /花复合物 (SCs) 对大肠杆菌的最大抑制值为26毫米;对A. niger的有效性有限.
结论:
- 合成的二氧化纳米颗粒和二氧化/复合物显示出和等重金属的高吸附潜力.
- 这些材料对废水处理有前途,特别是对于糖业的污染物,有助于循环经济.
- 多功能性质,包括抗微生物活性,表明可以将其整合到藻类膜生物反应器 (AMBR) 中,以加强废水处理.
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