铁,酸盐和酸盐对使用低成本陶过器从地下水中去除的影响
Md Shafiquzzaman1, Husnain Haider1, Mohammad Shafiul Azam2
1Department of Civil Engineering, College of Engineering, Qassim University, Buraydah, Saudi Arabia.
概括
铁改陶过器有效地从地下水中去除 (As). 然而,酸盐 (P) 和酸盐 (Si) 对性能产生负面影响,P和Si组合对减少构成最大的挑战.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 材料科学 材料科学 材料科学
背景情况:
- 地下水中的 (As) 污染对公众健康构成重大风险.
- 铁 (Fe) 改性陶过器 (IACF) 是一个有前途的低成本解决方案,用于去除As.
- 酸盐 (P) 和酸盐 (Si) 等共存离子对IACF表现的影响尚不清楚.
研究的目的:
- 调查铁 (Fe), (P) 和 (Si) 对IACF去除 (As(III)) 的影响.
- 评估P和Si对As去除效率的综合影响.
- 确定IACF在合成地下水中的最佳条件.
主要方法:
- 使用定制制造的IACF进行实验室规模的过实验.
- 在合成地下水中Fe,P,Si和As (III) 度的系统变化.
- 分析废水中的含量,以确定清除效率,并与最大污染水平 (MCL) 相比较.
主要成果:
- 铁 (Fe (II)) 显著增强了As (III) 的去除,Fe (II) 的2mg/L降低了As,低于50μg/L的MCL.
- 酸盐 (P) 度低于3毫克/升,酸盐 (Si) 度低于35毫克/升是有效去除5毫克/升Fe (II) 的As所需的.
- 结合P和Si具有协同的负面影响,将去除率从92%降低到63%并防止MCL合规. P 竞争吸附点,而 Si 抑制了 Fe 释放和形成.
结论:
- 除的IACF的有效性受到地下水P和Si度的显著影响.
- 酸盐和酸盐以累积的方式对As的去除产生负面影响,其综合效应比单个贡献更为明显.
- 优化IACF的性能需要仔细考虑地下水中的P和Si水平,以确保有效和合规的去除.
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