相关实验视频

Updated: Jul 5, 2025

Extraction of Structural Extracellular Polymeric Substances from Aerobic Granular Sludge

Extraction of Structural Extracellular Polymeric Substances from Aerobic Granular Sludge

Published on: September 26, 2016

通过Microcystis细胞外聚合物对金属进行封存:一条通往更绿色水处理的有希望的道路

Sengjrang Ch Momin¹, Ran Bahadur Pradhan¹, Jyotishma Nath¹

¹Laboratory of Algal Physiology and Biochemistry, Department of Botany, Mizoram University, Aizawl, 796004, India.

Environmental science and pollution research international

|January 13, 2024

概括

微囊气细胞外聚合物物 (EPS) 显示出从水中去除铜和等重金属的巨大潜力. 这些EPS为水处理和环境修复提供了环保和高效的解决方案.

科学领域:

环境科学环境科学
生物技术是生物技术.
材料科学材料科学材料科学

背景情况:

水体中的重金属污染对环境和健康构成重大风险.
持久性有毒物质在生态系统和食物链中生物积累.
有效和可持续的整治策略对于净水至关重要.

研究的目的:

研究Microcystis aeruginosa细胞外聚合物物质 (EPS) 对于铜 (Cu2+) 和 (Ni2+) 离子去除的潜力.
评估EPS作为一种环保和高效的生物吸收剂,用于重金属封存.
探索EPS在水处理绿色技术中的应用.

主要方法:

在M. aeruginosa生物质和EPS.中的糖类,蛋白质和氨基酸的量化.
使用扫描电子显微镜 (SEM) 描述EPS结构.
在金属处理前后进行元素分析 (EDAX) 和分子分析 (FTIR).
对Cu2+和Ni2+吸附的动力学,热力学和平衡研究.
确定Ni2+和Cu2+的最大吸附能力.

主要成果:

由于糖化物,蛋白质和氨基酸,EPS表现出显著的金属化能力.
SEM揭示了多孔的3D EPS结构,有利于增强金属吸附.
FTIR分析显示了多种结合机制,包括协调,π电子相互作用和静电力.
与生物质相比,EPS对Cu2+和Ni2+的吸附率更高,更快.
对Ni2+的最大吸附能力达到了44.81 mg g-1,对Cu2+的最大吸附能力达到了37.06 mg g-1.

结论:

微囊 (Microcystis aeruginosa EPS) 是一种高效和高效的吸附剂,可以从水中去除铜和.
基于EPS的重金属封存是一种有希望的绿色技术,用于环境修复.
这些发现凸显了微生物EPS在可持续净水和污染控制方面的潜力.

关键词:

生物吸收生物吸收运动学运动学金属化分子的金属化分子.表面表征表征表征的表征表征.热力学是一种热力学.处理水处理水处理水处理

更多相关视频

Looking Outwards: Isolation of Cyanobacterial Released Carbohydrate Polymers and Proteins

Looking Outwards: Isolation of Cyanobacterial Released Carbohydrate Polymers and Proteins

Published on: May 27, 2019

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Published on: July 10, 2015

相关概念视频

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

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...

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...