利用橄叶生物质作为有效的吸附剂来去除西普洛素:特征,异热,动力和热力学分析
Zuhier Alakayleh1, Faisal Al-Akayleh2, Mayyas Al-Remawi3
1Civil and Environmental Engineering Department, College of Engineering, Mutah University, Mutah, Karak, 61710, Jordan.
Environmental monitoring and assessment
|May 20, 2024
概括
橄叶被激活以创建一种新型吸附剂,用于从水中去除西普洛素 (CIP). 修改后的吸附剂显著提高了这种制药污染物的去除效率和能力.
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:
- 制药,如西普洛素 (CIP),是水体中新出现的污染物.
- 传统的水处理方法在去除复杂有机污染物方面往往是无效的.
- 开发有效和可持续的吸附剂来去除污染物对于环境保护至关重要.
研究的目的:
- 从橄叶中开发一种活性生物质吸收剂,用于去除西普洛素.
- 为了研究修改后的吸附剂的吸附性能和特性.
- 评估吸附机制和热力学特性.
主要方法:
- 使用氧化,酸和死海水激活橄叶原生物质 (ROLB),以产生共沉吸附剂 (COLB).
- 使用SEM,BET和ATR-FTIR进行了表面表征.
- 进行吸附实验以确定最佳条件 (pH,度,时间) 并分析等温,动力和热力学数据.
主要成果:
- 与ROLB (2.8 m2/g) 相比,COLB的BET表面积 (7.763 m2/g) 显著更高.
- COLB在60分钟内在pH6和2mg/ml的CIP度下获得了77.9%的最佳CIP去除效率.
- 最大吸附容量为ROLB的636 mg/g和COLB的1243 mg/g,伪二阶动力学和Langmuir/Freundlich异热模型非常适合.
结论:
- 活性橄叶生物质 (COLB) 是一种高效的吸收剂,可以从水中去除西普罗素.
- 增强的吸附能力归因于COLB的改善表面积和特性.
- 吸附过程是自发的,外热的,涉及混合的物理化学机制,表明其在实际水处理应用中的潜力.
更多相关视频
09:09A Facile Synthetic Method to Obtain Bismuth Oxyiodide Microspheres Highly Functional for the Photocatalytic Processes of Water Depuration
Published on: March 29, 2019
7.7K
11:38In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
Published on: February 1, 2020
15.9K
相关概念视频
01:29Adsorption Isotherms I
Adsorption isotherms are mathematical models that describe how molecules in a gas or liquid phase interact with surfaces. Two of the most common isotherm models are the Langmuir and Freundlich isotherms, which relate to Type I monolayer chemisorption. The Langmuir model is based on four key assumptions:• Adsorption cannot exceed monolayer coverage.• All surface sites are equivalent.• Molecules adsorb only at vacant sites.• There are no interactions between adsorbed molecules.Consider the...
01:25Adsorption Isotherms II
Brunauer, Emmett, and Teller (BET) introduced a theory in 1938 that modified Langmuir's assumptions to explain multilayer physical adsorption. This theory is applicable to Type II isotherms and provides a more realistic picture of adsorption processes. The BET theory assumes a uniform solid surface with localized adsorption sites, where adsorption at one site doesn't affect adsorption at neighboring sites. This theory also allows for the possibility of additional molecules being adsorbed on top...