相关实验视频

Updated: Jul 7, 2025

Ultrasonic-Assisted Extraction of Cannabidiolic Acid from Cannabis Biomass

Ultrasonic-Assisted Extraction of Cannabidiolic Acid from Cannabis Biomass

Published on: May 27, 2022

从水溶液中去除阴阳性染料,使用聚烯酸改性大麻茎的方法

Wentao Huang¹, Yuping Xu¹, Niansheng Chen¹

¹Faculty of Materials Science and Chemistry, China University of Geosciences (Wuhan), 68 Jincheng Street, East Lake High-tech Development Zone, Wuhan, 430078, China.

Environmental science and pollution research international

|December 21, 2023

概括

一种新型的生物吸收剂,大麻茎移植的多烯酸 (HS-PAANa),有效地从废水中去除阴阳性染料. 这种可持续材料具有高吸附能力和可回收性,可有效处理染料污染物.

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:

来自工业废水的染料污染造成了重大环境挑战,原因是染料的持久性和复原性.
传统的染料去除方法通常面临效率,成本和环境影响的局限性.

研究的目的:

从农业废物 (大麻茎) 中合成和特征化一种新的阳离子生物吸收剂 (HS-PAANa),以有效去除染料.
为了评估HS-PAANa的吸附性能,动力学和选择性,用于阴阳性染料.
评估开发的生物吸附剂在废水处理中的可回收性和实际适用性.

主要方法:

通过将多烯酸 (PAA) 移植到大麻茎 (HS) 上来合成HS-PAANa.
使用阴离子染料 (甲蓝和水晶紫) 和阴离子染料 (甲) 的吸附实验.
动力和等温建模 (伪二次和朗慕尔模型) 了解吸附机制.
在二元染料系统中对选择性吸附的评估和对吸附剂在多个循环中的可回收性进行评估.

主要成果:

在HS-PAANa中,甲蓝 (1296.65 mg/g) 和水晶紫色 (1451.43 mg/g) 的快速吸附动力和高吸附能力得到了证明.
吸附数据最适合伪二次运动模型和兰格穆尔等热量.
吸附剂在二进制染料系统 (MB/MO) 中对阴离子染料进行了选择性吸附.
在五个吸附-脱附循环后,HS-PAANa保持了高的去除效率 (>93%),表明了出色的可回收性.

结论:

合成的HS-PAANa是一种高效和有选择性的生物吸收剂,用于从水溶液中去除阴离子染料.
它来自农业废物,并且具有很好的可回收性,这凸显了它作为工业废水处理的可持续和经济有效解决方案的潜力.
HS-PAANa显示出从复杂混合物中除特定染料污染物的有望性.

关键词:

阴阳性染料是一种阴阳性染料.大麻树干的树干.聚烯酸是一种多烯酸.可回收的可回收性选择性吸附是一种选择性吸附.水的污染水的污染

更多相关视频

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Published on: June 28, 2019

Extraction of Ramie Fiber in Alkali Hydrogen Peroxide System Supported by Controlled-release Alkali Source

Extraction of Ramie Fiber in Alkali Hydrogen Peroxide System Supported by Controlled-release Alkali Source

Published on: February 6, 2018

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...

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...