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氨的吸附特性通过基于玉米草的改性废弃物生物炭吸附氨

Jie Li¹, Tiejun Zhang¹, Peng Wang²

¹School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, 014000, China.

Environmental science and pollution research international

|October 13, 2025

概括

研究人员从玉米生物炭中开发了一种低成本的吸附剂,用化修饰,以有效地从水中去除氨. 这种生物炭具有很高的吸附能力和环境修复的实际潜力.

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:

氨污染威胁着水生生态系统和人类健康,导致过度缩.
目前用于清除氨的吸附剂通常是昂贵和低效的.
开发低成本,高效的吸附剂对于整治至关重要.

研究的目的:

从玉米中合成和特征化生物炭,作为一种具有成本效益的氨吸附剂.
为了研究化修饰对生物炭吸附性质的影响.
评估修改生物炭的吸附能力,效率和机制.

主要方法:

玉米被烧化以产生生物炭.
生物炭使用化进行了修改.
生物炭特性 (表面积,孔隙结构) 的表征.
在不同的条件下进行了氨吸附实验.
进行了吸附动力学和异热学研究.

主要成果:

化物修饰生物炭 (MBC) 呈现出高表面积 (208.322 m2/g) 和中孔结构.
对于氨,MBC的最大吸附能力为12.005 mg/g.
在45°C时观察到92.901%的去除效率.
吸附遵循伪二阶动力学和兰木尔异热模型,表明化学吸附.
这个过程是内热的 (正值 ΔH0).

结论:

玉米草衍生的MBC是一种有前途的,低成本的吸附剂,用于清除氨.
吸附机制涉及孔隙填充,复合,阴离子-π相互作用,阴离子交换和静电吸引.
该研究强调了农业废物在开发高效环境整治材料方面的潜力.

关键词:

活化生物炭是一种活化生物炭.吸附方式吸附方式吸附方式吸附特性吸附特性吸附机制是一种吸附机制.氨的气是氨中的一种.玉米草的玉米草是一个很好的方法.

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