不同条件对溶液吸收–电芬顿技术净化空气中颗粒物和甲醛效果的影响

The Effect of Different Conditions on the Purification of Solution Absorption-Electric Fenton Technology on Particulate Matter and Formaldehyde in the Air

摘要: 颗粒物和甲醛作为目前重点的空气污染物，对人们的身体健康和社会发展存在严重危害，但目前的空气净化方式大多存在效率低、成本高、材料无法循环利用等问题。为此，本实验利用溶液吸收–电芬顿设备，通过设备内聚吡咯薄膜分割气体产生微小气泡吸收污染物，再利用电芬顿技术进行氧化分解，测试了初始进气浓度、气体流量、电流强度对不同粒径颗粒物和甲醛的去除情况的影响。结果表明，在颗粒物初始进气浓度200 ppm，甲醛初始进气浓度0.48 mg/m³，气体流量300 ml/min，电流强度150 mA时去除效果最佳，吸收过程均符合一级动力学模型，具有良好的净化效果。

Abstract: Particulate matter (PM) and formaldehyde, as key air pollutants, pose significant threats to human health and societal development. However, current air purification methods often suffer from limitations such as low efficiency, high costs, and non-recyclability of materials. To address these challenges, this experiment employed a solution absorption-electro-Fenton system. The device utilized a polypyrrole film to partition the gas stream into micro-bubbles for pollutant absorption, followed by oxidative degradation via electro-Fenton technology. The effects of initial inlet concentration, gas flow rate, and current intensity on the removal efficiency of different sized particulate matter and formaldehyde were systematically investigated. Results demonstrated optimal performance under the following conditions: initial PM concentration of 200 ppm, formaldehyde concentration of 0.48 mg/m³, gas flow rate of 300 mL/min, and current intensity of 150 mA. The absorption process adhered to first-order kinetics, exhibiting excellent purification efficacy.