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从废水中有效地去除六价 (Cr(VI)) 使用胺基修饰生物炭

Ashraf Ali¹, Sarah Alharthi^2,3, Nora Hamad Al-Shaalan⁴

¹Department of Chemistry, Faculty of Physical & Applied Sciences, The University of Haripur, Haripur 22620, Pakistan.

Molecules (Basel, Switzerland)

|July 14, 2023

概括

胺基修饰生物炭有效地从废水中去除六价 (Cr(VI)). 这种可持续的吸附剂来自大米,在最佳条件下达到97%的去除效率,为净化水提供了可行的解决方案.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
水处理处理水的方法

背景情况:

来自农业废物的生物炭被探索用于土壤增强和污染物去除.
废水处理需要有效的吸附剂,用于危险的重金属,如CrVI.
胺功能化可以提高生物炭的吸附能力.

研究的目的:

从大米中合成和鉴定胺修饰生物炭.
研究这种生物炭在从废水中去除Cr (VI) 的效率.
为了确定最佳的条件和吸附机制Cr (VI) 去除.

主要方法:

米的低温热解,然后使用1-[3-(trimethoxysilyl) propyl]尿素进行胺基改性.
使用富里埃变换红外 (FTIR) 光谱,扫描电子显微镜 (SEM) 和X射线衍射 (XRD) 的表征.
批量吸附实验以评估吸附剂剂量,金属度,时间和pH等参数;异温和运动研究.

主要成果:

胺修饰生物炭成功合成和表征.
在pH值为2,60分钟,吸附剂剂剂量为2g/L,金属度为100mg/L时,达到最佳的CrVI去除 (97%的效率).
吸附数据最适合兰格穆尔等温模型,并遵循伪二次运动模型.

结论:

胺基修饰生物炭是从废水中去除Cr (VI) 的高效吸附剂.
兰木尔等温和和伪二阶动力学表明一种化学吸收机制.
这种功能化的生物炭为重金属修复提供了一个经济可行和可持续的替代方案.

关键词:

吸附性吸附性异热法是一种吸附性异热法.氨基酸胺修饰的修饰生物炭是一种生物炭.运动学的动力学.废水处理是废水处理的方法之一.

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