相关实验视频

Updated: Jun 4, 2025

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

从水和土壤中去除的机制使用生物化纳米零铁介导生物炭通过共同热解

Zhiyi Liu¹, Shuhong Zhou¹, Yubing Cai¹

¹School of Resources and Environment, Wuhan Textile University, Wuhan 430200, China.

Nanomaterials (Basel, Switzerland)

|December 17, 2024

概括

纳米零价值铁装载生物木炭 (nZVI@BC) 有效地从水和土壤中去除. 这种新型材料增强了土壤中的被动化,改善了土壤质量,为环境修复提供了有前途的解决方案.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

(VI) 污染对水生和陆生生态系统构成重大风险.
开发高效,具有成本效益的整治材料对于环境保护至关重要.

研究的目的:

为了合成纳米零价值铁装载生物木炭 (nZVI@BC) 使用生物化共热解.
评估nZVI@BC在从水溶液和土壤中去除 (VI) 的有效性.
研究去除的机制和对土壤特性的影响.

主要方法:

通过生物溶解和共同热解合成nZVI@BC.
从水中去除 (VI) 的批量实验.
土壤化实验,以评估被动化.
删除动力学和同热量的分析 (Freundlich,伪二次).
评估土壤的物理化学特性和微生物群落.

主要成果:

与BC和BBC相比,nZVI@BC在水中显示出显著更高的Cr(VI) 去除能力.
在最佳条件下,获得了20.11%的20 mg/L Cr ((VI) 的去除率,适合弗洛伊德利希和伪二阶模型.
在土壤中,nZVI@BC在45天后减少了12.89%的可交换,并增加了10.45%的残留.
土壤属性和微生物丰富度在nZVI@BC应用后有所改善.

结论:

在水和土壤中,nZVI@BC是用于Cr(VI) 整治的高效材料.
移除机制包括吸附,减少,共同沉,表面吸附,静电吸引,离子交换和复杂化.
合成方法为开发用于环境应用的铁改性生物炭提供了一种新的方法.

关键词:

在这个过程中,Cr Cr Cr Cr 带有生物炭的纳米零价值铁.生物教学就是生物教学.微生物是一种微生物.

更多相关视频

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration

A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration

Published on: December 5, 2019

相关概念视频

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...

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...