竞争性吸附,和的物质在石上,与NOM-CD模型量化相结合
Yingxuan Deng1, Xinyu Zhang1, Chunyu Ren1
1School of Environment, Henan Normal University, Xinxiang 453007, China.
The Science of the total environment
|June 8, 2025
概括
像酸 (HA) 和酸 (FA) 这样的性物质 (HS) 显著影响和与石的相互作用. 该NOM-CD模型显示HS通过硬体和静电效应影响竞争性吸附,特别是在酸性条件下.
科学领域:
- 环境化学环境化学
- 地质化学 地质化学
- 土壤科学 土壤科学
背景情况:
- 和在生态系统中的生物可用性是由与金属氧化物和有机物质的相互作用决定的.
- 基物质 (HS),包括基酸 (HA) 和基酸 (FA),是影响这些相互作用的关键有机物成分.
研究的目的:
- 了解亚石,亚酸盐和酸盐在受HS影响的戈希特表面上的分子级竞争相互作用.
- 评估NOM-CD模型在阐明这些复杂的吸附机制方面的可靠性.
主要方法:
- 进行了批量吸附实验.
- 整合了NOM-CD模型以分析分子水平上的吸附机制.
- 在各种pH条件下,研究了在HA和FA的存在下石,酸盐和酸盐与石的竞争性相互作用.
主要成果:
- 该NOM-CD模型有效地阐明了HS,和酸盐在石上的相互作用机制.
- 无论是HA还是FA,都对竞争相互作用产生了重大影响,特别是在酸性条件下 (pH <5.0).
- HA的较大尺寸导致更大的静电阻碍和静电排斥,而FA的较小尺寸和更密集的碳基团减少了戈伊的静电潜力.
结论:
- 酸盐在控制和酸盐在石上吸附方面起着至关重要的作用.
- 静电排斥和固体效应是多氧化离子和HS相互作用的首要驱动因素.
- 在较高的pH值下,HS的影响因氧化离子增加和石上的负表面电荷而减弱.
更多相关视频
08:21Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method
Published on: May 18, 2018
14.7K
11:14Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
12.5K
相关概念视频
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
00:49Gravimetry: Inorganic And Organic Precipitating Agents
1.6K
In gravimetry, the precipitant is chosen carefully to obtain a pure solid that can be easily filtered. Common inorganic precipitants can be used to determine several cations and anions. In some cases, the formation of the same precipitate can be used to determine the cation and the anion. For example, the reaction of barium and chromate ions to give barium chromate is used to determine both barium and chromate. However, precipitates such as hydroxides, oxalates, and metal ammonium phosphates...
1.6K