相关实验视频

Updated: Jul 9, 2025

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

碳基和聚胺组功能化聚烯二烯纤维,以有效地从溶液中恢复铜离子

Zhihao Liu¹, Zhijie Chen², Daijun Zhang^3,4

¹Department of Environmental Science, Chongqing University, Chongqing, 400044, China.

Environmental science and pollution research international

|December 6, 2023

概括

用氨基和基组化纤维有效地从废水中去除铜 (Cu2+). 这些高容量,快速作用的吸附剂在多种用途中保持稳定性,为金属回收提供了可持续的解决方案.

科学领域:

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

背景情况:

废水被铜 (Cu2+) 等重金属污染给环境带来了风险.
从废水中回收重金属对于资源保护和污染控制至关重要.
开发具有优越容量,动力学和稳定性的高性能吸附剂对于有效的重金属去除至关重要.

研究的目的:

开发和评估新型合纤维,以有效地从废水中吸附Cu2+.
研究Cu²⁺在功能化纤维上的吸附机制和动力学.
评估准备的吸附剂的稳定性和可重复使用性,用于实际应用.

主要方法:

通过将氨基 (-NH₂) 和碳氧基 (-COOH) 接种到聚烯二纤维表面来制备合纤维.
系统地研究Cu2+吸附行为,包括容量,动力学和pH的影响.
使用诸如富里埃变换红外光谱 (FTIR) 和X射线光电子光谱 (XPS) 等技术对吸附后纤维进行表征,以阐明吸附机制.

主要成果:

化纤维在pH 5.0下对Cu2+的最大吸附能力为136.3 mg/g.
吸附平衡在大约60分钟内实现,遵循准二次动力和兰迈尔模型.
确定了 -COOH和 -NH₂群体之间的协同协调是快速捕获Cu²⁺的主要机制,由引入的亲水性群体增强.

结论:

开发的合纤维在废水中的Cu2+吸附方面表现出色,具有高容量和快速动力学.
接种的功能组的协同作用确保了高效和稳定的金属离子去除.
吸附剂在五个循环后保留了90%以上的初始吸附能力,这表明它们具有重要的可重复使用性和工业应用潜力.

关键词:

吸附方式吸附方式吸附方式炭基组是碳基组的一个组成部分.在Cu2++中.聚烯二烯酸纤维的纤维.聚胺组是一个聚胺组.

更多相关视频

Procedure for Fabricating Biofunctional Nanofibers

Procedure for Fabricating Biofunctional Nanofibers

Published on: September 10, 2012

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia

Published on: October 10, 2013

相关概念视频

Ion Exchange

Ion Exchange

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...

Anionic Chain-Growth Polymerization: Overview

Anionic Chain-Growth Polymerization: Overview

The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...

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...