相关实验视频

Updated: Jul 20, 2025

Coupling Carbon Capture from a Power Plant with Semi-automated Open Raceway Ponds for Microalgae Cultivation

Coupling Carbon Capture from a Power Plant with Semi-automated Open Raceway Ponds for Microalgae Cultivation

Published on: August 14, 2020

酸盐和铁铁的协同作用,以提高藻类载荷水处理中的超过性能

Yonghui Han¹, Jinlong Wang¹, Daliang Xu¹

¹National Engineering Research Centre for Bioenergy, Harbin Institute of Technology, Harbin 150090, China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.

|July 30, 2023

概括

酸盐/FeSO4的预处理显著减少了超过 (UF) 中藻类引起的膜污染. 这种方法增强了藻类聚合和有机物去除,改善了 UF 的性能和流量.

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:

超过 (UF) 由于严重的膜污染,在处理含有藻类的水中面临着挑战.
藻类污染物显著阻碍了UF的效率和运行寿命.

研究的目的:

调查酸盐/FeSO4 (Fe(VI) /Fe(II)) 预处理对在UF中减轻藻类引起的膜污染的有效性.
为了提高性能和减少处理藻类污染水的UF系统中的污染.

主要方法:

在UF之前使用了酸盐/FeSO4 (Fe(VI) /Fe(II)) 预处理策略.
分析了泽塔电位,粒子大小,溶解有机碳 (DOC),UV254,K+和光谱的变化.
评估的分子重量分布和膜接口特征.
应用扩展的德贾古因-兰多-维维-奥弗比克 (XDLVO) 理论用于机制分析.

主要成果:

Fe (VI) /Fe (II) 预处理增强了藻类聚合,并通过in-situ Fe (III) 生产增加了花大小.
与单独使用Fe (VI) 相比,减少了细胞内有机物 (IOM) 的产生和小分子有机物的形成.
显著减轻藻源污染,使终端膜流量从0.16增加到0.62 (L/m2/h).
可逆和不可逆的污染分别减少了67.1%和64.1%.
通过延迟蛋糕过和削弱疏水吸附,改变了污染机制.

结论:

Fe (VI) /Fe (II) 预处理通过减少藻类引起的膜污染,有效地提高了UF的性能.
这一策略为处理含有藻类的水和延长膜寿命提供了一个有希望的方法.
铁VI) 和铁II) 的协同作用优化了有机物去除和污染缓解.

关键词:

含有藻类的水中含有藻类.在现场Fe (III)膜污染是因为膜污染.预处理预处理超过的过方法

更多相关视频

Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts

Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts

Published on: April 9, 2016

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability

Published on: April 22, 2016

相关概念视频

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...

Factors Affecting Solubility

Factors Affecting Solubility

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:

Extraction: Advanced Methods

Extraction: Advanced Methods

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...

Colloidal precipitates

Colloidal precipitates

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...