低成本酸盐和聚化 (PAC) 之间的协同作用改善了河水处理的花化过程
Gonzalo De-Paz-Arroyo1,2, Andrea M Torres-Iribe2,3, Lorenzo A Picos-Corrales1,2
1Facultad de Ingeniería Culiacán, Universidad Autónoma de Sinaloa, Ciudad Universitaria, Culiacan 80013, Sinaloa, Mexico.
Polymers
|July 12, 2025
概括
一种新的酸-多化 (PAC) 积剂混合物提供了有效的河水处理. 这种环保方法使用的剂量低于传统方法,显著消除了微塑料和细菌等污染物.
科学领域:
- 环境科学 环境科学
- 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:
- 越来越多的人对环境安全和有效的浮剂系统的需求.
- 传统的花剂通常需要高剂量,并可能造成健康风险.
- 探索天然和合成花剂混合物的协同作用,以提高处理效率.
研究的目的:
- 评估一种廉价的奇托 (CH56) - 聚化 (PAC) 混合物,作为一种用于河水的新型花剂系统.
- 为了确定与单个花剂相比,CH56-PAC混合物的最佳剂量.
- 评估混合物对水质参数和特性的影响.
主要方法:
- 在Tamazula和Humaya河的水样上进行了花试验.
- 用显微镜分析了的特性,包括碎形维度 (FD) 和度 (Λ).
- 量化了微塑料,铜离子,四环素和细菌的去除效率.
主要成果:
- CH56-PAC混合物需要明显较低的剂量 (例如,0.75毫克L-1CH56+1-2毫克L-1PAC) 与单独的花剂相比 (3毫克L-1CH56或5毫克L-1PAC).
- 混合物形成了更大,更紧的,改善了沉积动力学和微塑料去除 (80%).
- 铜离子 (58%),四环素 (22%) 和细菌 (> 90%) 的显著减少.
结论:
- 与单个花剂相比,CH56-PAC混合物在河水处理中表现出优越的性能和效率.
- 这种协同方法为化工厂提供了一种具有成本效益和环保性的替代方案.
- 该研究为降低PAC剂量和将基托纳入水处理过程提供了有价值的数据.
相关概念视频
01:06Coagulation
380
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...
380
04:01Factors Affecting Solubility
33.9K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
33.9K
01:09Colloidal precipitates
769
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
769
01:17Precipitation and Co-precipitation
2.1K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
2.1K
00:56Extraction: Advanced Methods
541
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
541
01:17Ion Exchange
667
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
667