在电凝过程中使用 siderite 作为铁源,高效地从地下水中去除 As(iii)
Haitao Yu1, Junfeng Li1,2, Wenying Qu1,2
1College of Water Conservancy and Architectural Engineering, Shihezi University Shihezi 832000 Xinjiang PR China ljfshz@126.com.
RSC advances
|June 17, 2024
概括
一种新型的充满 siderite 的阳极电凝系统有效地从污染的地下水中去除. 这种稳定且具有成本效益的技术实现了99%以上的去除,解决了水处理中阳极磨损的挑战.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 电化学 电化学 电化学
背景情况:
- 电凝是处理污染地下水的一个有希望的方法,因为它的操作简单.
- 阳极磨损仍然是一个重要的挑战,限制了电凝处理以去除的广泛应用.
- (iii) 构成严重的健康风险,需要高效和稳定的去除技术.
研究的目的:
- 开发和评估一个充满 siderite 的阳极电凝系统,以有效地去除.
- 调查操作参数对的影响 (iii) 清除效率和系统稳定性.
- 在开发系统中阐明的氧化途径和去除机制.
主要方法:
- 开发一种用 siderite 填充的阳极,用于电凝.
- 单因素测试和响应表面方法来优化操作参数 (电流强度,pH,Na2SO4度).
- 叶片剂的表征和氧化途径的分析.
主要成果:
- 在最佳条件下,充满 siderite 的阳极系统实现了显着的 99.3 ± 0.37% 的去除率.
- 确定了最佳参数:30 mA电流强度,pH 7和10 mM Na2SO4度,用于400 μg L-1初始 ((iii).
- 的去除是通过花剂的直接吸附和As (iii) 到As (v) 的氧化,然后沉而发生的.
结论:
- 填充 siderite 的阳极电凝系统证明了高效率,稳定性和成本效益的去除.
- 该系统有效地克服了阳极磨损问题,为污染的地下水提供了强大的解决方案.
- 这项技术为推进电凝在实际修复中提供了强有力的理论基础.
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