相关实验视频

Updated: Mar 6, 2026

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

动态键驱动的离子陷在酸/酸珠中的离子陷

Dingyang Chen¹, Chaofan Wang¹, Yu Yu¹

¹Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China.

Journal of hazardous materials

|March 4, 2026

概括

新的酸/酸生物质珠有效地从废水中捕获 (Th(IV)) 离子. 这种可持续的方法为环境修复和资源回收提供了高容量和选择性.

科学领域:

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

背景情况:

对于 (Th(IV)) 离子的常规吸附剂具有诸如低亲和力,复杂合成和不良的活性部位可访问性等局限性.
有效和选择性的捕获对于环境修复和从废水中回收有价值的资源至关重要.

研究的目的:

开发一种低成本,高效和选择性的吸附剂,用于从废水中捕获Th (IV) 离子.
研究用于修复和回收的新型复合珠的吸附机制和性能.

主要方法:

使用绿色CaCl2诱导凝方法合成藻酸盐 (SA) /酸 (TA) 复合生物质珠.
珠子性能的表征和吸附性能的评估,包括容量,选择性,可重复使用性和柱子分离能力.
对回收潜力和经济可行性的分析.

主要成果:

该SA/TA复合珠实现了120分钟的吸附平衡时间和497.4mg/g的高吸收能力.
与竞争对手离子相比,对Th(IV) 离子具有很好的选择性,并在12个循环后保持了>90%的去除效率.
在分离系数>100和经济可行的二氧化 (ThO2) 恢复的柱子分离中实现了111.8 mg/g的动态吸收.

结论:

开发的SA/TA复合珠提供了一种可持续和有效的策略,用于选择性地从水中分离Th (IV) 离子.
这种方法对废水处理和放射性资源的回收有重大影响.
具有成本效益的性质和高性能将这些珠子定位为工业应用的有希望的解决方案.

关键词:

吸附方式吸附方式吸附方式生物质吸附剂是生物质吸附剂.复合珠子复合珠子离子的分离方法

更多相关视频

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Published on: May 3, 2019

Analysis of AtHIRD11 Intrinsic Disorder and Binding Towards Metal Ions by Capillary Gel Electrophoresis and Affinity Capillary Electrophoresis

Analysis of AtHIRD11 Intrinsic Disorder and Binding Towards Metal Ions by Capillary Gel Electrophoresis and Affinity Capillary Electrophoresis

Published on: August 22, 2018

相关概念视频

Qualitative Analysis

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...

EDTA: Auxiliary Complexing Reagents

EDTA: Auxiliary Complexing Reagents

EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...

EDTA: Chemistry and Properties

EDTA: Chemistry and Properties

Polydentate ligands are most widely used in complexometric titrations because they form more stable complexes with the metal ions than mono- or bidentate ligands due to the chelate effect. Examples of polydentate ligands are ethylenediaminetetraacetic acid (EDTA), crown ethers, and cryptands. The most important feature of optimal polydentate ligands is the ability to form 1:1 complexes in a single-step process. Amino carboxylic acid derivatives are frequently used as complexing agents. EDTA is...