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使用转化水黄有效去除:固定床柱的性能评估和实际应用

Anyi Ramirez-Muñoz^1,2, Elizabeth Flórez¹, Raúl Ocampo-Perez³

¹Grupo de Investigación Materiales con Impacto (Mat&mpac), Facultad de Ciencias Básicas, Universidad de Medellín, Medellín, Colombia.

|November 21, 2024

概括

化水 (CWH) 有效地通过固定床系统的酸盐形成从废水中去除. 这种环保吸附剂在连续水处理和营养物质回收利用方面表现有前途.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

水因其成分而成为吸附剂的潜在来源.
在650°C的化过程中,可获得富含金属氧化物和氧化物的化水 (CWH).
作为一种可持续的吸附剂,CWH正在被探索,用于去除.

研究的目的:

评估CWH作为固定床柱系统中的吸附剂,用于从废水中持续去除.
调查操作参数对吸附能力和柱子性能的影响.
通过使用耗尽的CWH来评估营养回收的潜力.

主要方法:

固定床柱吸附实验使用在650°C处理的CWH进行.
分析了去除,并确定了吸附能力.
专的表现是使用托马斯,亚当斯-博哈特和尤恩-尼尔森模型来建模的.
应用床深服务时间 (BDST) 模型来确认系统可行性.
在合成城市废水上进行了实践测试.

主要成果:

通过 apatite 形成,CWH 有效地去除了.
吸附能力从23.64升至26.55毫克/克,流量减少 (1.5至0.5毫升/分钟).
合成城市废水的最大吸附能力为5.20 mg/g.
增加吸附剂高度提高了柱子性能;更高的流量减少了容量.
建模结果证实了CWH在连续系统中的可行性.

结论:

化水黄是一种可行的,环保的吸收剂,用于从废水中去除.
CWH在连续流系统中表现出有效性,特别是对于低度的.
优化流量和吸附剂高度可以提高性能.
耗尽的CWH提供了作为土壤修补剂或肥料原料的营养物质回收的潜力.

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The Phosphorus Cycle

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.

Coagulation

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...