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通过对生物炭的吸附从水溶液中去除离子表面活性剂:特征,动力学和机制

J I Bautista Quispe¹, L C Campos², O Mašek³

¹Centre for Agroecology, Water and Resilience, Coventry University, Coventry, UK.

Environmental technology

|January 22, 2024

概括

生物炭有效地从废水中去除二硫酸盐 (SDS),一种常见的离子表面活性剂. 农业和林业衍生生物炭为灰色水处理提供了可持续的,低成本的解决方案.

科学领域:

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

背景情况:

从废物生物质中提取的生物炭是分散废水处理的有希望的材料.
有限的研究存在于生物炭在吸附阳离子表面活性剂的有效性.

研究的目的:

为了研究各种生物炭类型对二硫酸盐 (SDS) 的吸附.
评估操作参数对SDS移除效率的影响.

主要方法:

吸附实验使用不同温度 (550°C和700°C) 的米生物炭 (RH),小麦生物炭 (WS) 和木制生物炭 (OB) 以及活性炭 (AC) 进行.
评估了pH值,吸附剂负荷,颗粒大小,接触时间和初始SDS度的影响.
吸附动力学和同热量被分析使用伪二阶和弗洛伊德利希模型.

主要成果:

在优化条件下,最大的SDS去除率为WS生物炭高达90.4%,AC高达97%.
在测试的生物炭中,小麦生物炭 (WS-550) 具有最高的吸附能力 (66.23 mg/g).
对于大多数吸附剂,SDS吸附遵循伪二阶动力学,并且最好用弗洛伊德利希等温模型来描述.

结论:

来自农业和林业残留物的生物炭是水溶液中SDS的有效吸附剂.
这些生物炭代表了一种可持续和经济的选择,用于处理含有离子表面活性剂的灰色水.
进一步的研究可以优化生物炭的特性,以便在分散系统中提升表面活性剂的去除.

关键词:

生物炭是一种生物炭.移除 SDS 的方法吸附剂的选择吸附剂的选择阳离子表面活性剂是什么?基于废物的吸附剂是基于废物的吸附剂.

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