一种新的颗粒物材料 (CTS/ZMS) 用于从地下水中去除氨和酸盐:性能和再生
Yingjie Luo1, Shui Liu2, Junying Shi1
1School of Environmental and Chemical Engineering, Foshan University, Foshan, People's Republic of China.
Environmental technology
|September 5, 2024
概括
一种新的热带石材料,CTS/ZMS,有效地从地下水中去除氨和酸盐. 优化条件显示了高的去除效率,表明其用于净化水的潜力.
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 处理水的方法
背景情况:
- 地下水被氨 (NH4+-N) 和酸盐 (NO3--N) 污染给环境和健康带来了重大风险.
- 传统的水处理方法往往难以同时去除这两种污染物.
- 开发新型吸附剂对于高效和成本效益的整治至关重要.
研究的目的:
- 开发和优化一个修改的化物分子 (CTS/ZMS) 来同时从地下水中去除NH4+-N和NO3--N.
- 研究CTS/ZMS复合材料的吸附性能,机制和再生.
- 为在水处理中应用CTS/ZMS提供技术指南.
主要方法:
- 中心复合设计 (CCD) 用于优化吸附剂剂量和接触时间.
- 进行了批量实验,以评估各种pH值和温度的去除效率.
- 使用了表征技术 (SEM,EDS,BET,FTIR,XPS) 和吸附同热/运动模型.
- 使用不同的溶液 (NaCl,Na2CO3) 进行了再生研究.
主要成果:
- 在5.5g/L剂量和6.25h接触时间下,获得了40%的酸盐和80.2%的氨的最佳去除效率.
- 吸附是自发的,在更高的温度下是可行的,由离子交换,静电相互作用和结合驱动.
- 用1mol/L NaCl,然后用1mol/L Na2CO3进行再生,产生了最高的污染物去除效率.
- 吸附遵循伪二次动力学和弗洛伊德利希模型,兰慕尔容量为0.92 mg/g的氨和1.98 mg/g的酸盐.
结论:
- CTS/ZMS复合材料显示出作为有效吸附剂的巨大潜力,可以同时从地下水中去除氨和酸盐.
- 该研究提供了关于CTS/ZMS优化,机制和再生的宝贵见解,用于实际的水处理应用.
- CTS/ZMS为缓解由化合物造成的地下水污染提供了一个有希望的解决方案.
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