Hassan Saad S M, Mohamed Nora R G, Saad Mohamed M A, Ibrahim Yasser H, Elshakour Alia A, Fathy Mahmoud Abdelwahab
Department of Chemistry, Faculty of Science, Ain Shams University, Abbasia, Cairo 11566, Egypt.
Air Pollution Research Department, Environmental Research Division, National Research Centre, Giza 12622, Egypt.
Polymers (Basel). 2025 May 23;17(11):1447. doi: 10.3390/polym17111447.
A novel cost-effective, rapid, and eco-friendly method was described for the removal of carbon dioxide (CO) from the gaseous emissions of gasoline engines. This involved the use of a sandwich filter (~10 cm diameter) made of a nonwoven poly (-phenylene isophthalamide) (Nomex) fabric loaded with a thin layer of activated carbon. The optimized filter, with an activated carbon mass of 2.89 mg/cm, a thickness of 4.8 mm, and an air permeability of 0.5 cm/cm/s, was tested. A simple homemade sampling device equipped with solid-state electrochemical sensors to monitor the concentration levels of CO before and after filtration of the emissions was utilized. The data were transmitted via a General Packet Radio Service (GPRS) link to an Internet of Things (IoT)-based gas monitoring system for remote management, and real-time data visualization. The proposed device achieved a 70 ± 3.4% CO-removal efficiency within 7 min of operation. Characterization of the filter was conducted using a high-resolution scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and Brunauer-Emmett-Teller (BET) analysis. The effects of loaded activated carbon mass, fabric type, filter porosity, gaseous removal time, and adsorption kinetics were also examined. The proposed filter displayed several advantages, including simplicity, compactness, dry design, ease of regeneration, scalability, durability, low cost, and good efficiency. Heat resistance, fire retardancy, mechanical stability, and the ability to remove other gasoline combustion products such as CO, SO, NO, VOCs, and particulates were also offered. The filtration system enabled both in situ and on-line CO real-time continuous emission monitoring.
描述了一种新型的经济高效、快速且环保的方法，用于从汽油发动机的废气排放中去除二氧化碳（CO）。这涉及使用一种由负载有薄层活性炭的非织造聚间苯二甲酰间苯二胺（Nomex）织物制成的三明治过滤器（直径约10厘米）。对优化后的过滤器进行了测试，其活性炭质量为2.89毫克/平方厘米，厚度为4.8毫米，透气率为0.5厘米/厘米/秒。利用一个配备固态电化学传感器的简单自制采样装置来监测排放物过滤前后的CO浓度水平。数据通过通用分组无线服务（GPRS）链路传输到基于物联网（IoT）的气体监测系统，以进行远程管理和实时数据可视化。所提出的装置在运行7分钟内实现了70±3.4%的CO去除效率。使用高分辨率扫描电子显微镜（SEM）、能量色散X射线分析（EDX）和布鲁诺尔-埃米特-泰勒（BET）分析对过滤器进行了表征。还研究了负载活性炭质量、织物类型、过滤器孔隙率、气体去除时间和吸附动力学的影响。所提出的过滤器具有几个优点，包括简单、紧凑、干式设计、易于再生、可扩展性、耐用性、低成本和高效率。还具备耐热性、阻燃性、机械稳定性以及去除其他汽油燃烧产物（如CO、SO、NO、挥发性有机化合物和颗粒物）的能力。该过滤系统能够实现原位和在线CO实时连续排放监测。
