通过金属有机框架复合吸收剂从废水中去除重金属 (Cu2+):基于模拟的人工神经网络和响应表面方法
Feng Han1, Ahmad Saeed Hessen2, Abdelfattah Amari3
1The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China.
Environmental research
|December 23, 2023
概括
金属有机框架 (MOF) 纳米复合材料有效地从废水中去除铜 (Cu2+). 响应表面方法 (RSM) 和人工神经网络 (ANN) 准确地建模和优化了这种重金属去除过程.
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:
- 基于金属有机框架 (MOF) 的复合材料越来越多地用于污染物吸附.
- 重金属污染,特别是铜 (Cu2+),对水体构成重大风险.
- 开发有效的方法来从废水中去除重金属对于环境保护至关重要.
研究的目的:
- 模拟,预测和优化使用MOF纳米复合材料从废水中去除重金属离子 (Cu2+).
- 评估人工神经网络 (ANN) 和响应表面方法 (RSM) 对吸附过程的预测能力.
- 确定最大限度地提高Cu2+去除效率的最佳条件.
主要方法:
- 利用响应表面方法 (RSM) 进行建模和优化.
- 采用人工神经网络 (ANN) 算法来预测吸附效率.
- 研究了时间,吸附剂剂量和pH对Cu2+去除的影响.
主要成果:
- RSM和ANN都准确地预测了Cu2+去除效率 (RE).
- 在150分钟,0.008g的吸附剂剂量和pH值为6时,达到最大的RE.
- 一个ANN模型显示高R2值 (0.9992-0.9996),表明出色的预测准确度.
结论:
- MOF纳米复合材料有效地从废水中去除Cu2+.
- RSM和ANN是模拟和优化重金属吸附的可靠工具.
- 确定了Cu2+去除的最佳条件,为实际应用铺平了道路.
相关概念视频
Extraction: Advanced Methods
448
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...
448
Coagulation
302
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...
302
Precipitation and Co-precipitation
1.8K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
1.8K


