低温等离子体催化协同降解混合VOCs（甲苯、丙酮及乙酸乙酯）的研究
低温等离子体催化协同降解混合VOCs（甲苯、丙酮及乙酸乙酯）的研究
摘要：
本研究采用低温等离子体催化技术对混合VOCs（甲苯、丙酮及乙酸乙酯）进行降解处理。实验结果表明：在催化剂氧化还原剂Fe-Cu/H2O2的助催化下，低温等离子体发生器产生的OH自由基能够高效降解混合VOCs，其中以甲苯的降解效率最高，且在温度为50℃、催化剂Fe-Cu/H2O2质量比为1:1、催化剂用量为1.2g/L、空气流速为300mL/min的条件下，甲苯的消除率为87.5%；丙酮的消除率为79.9%，乙酸乙酯消除率为66.6%。同时，通过GC-MS对降解产物进行分析，发现在催化反应过程中，甲苯分解为苯、苯酚、苯甲醇等物质，丙酮分解为丙醛、乙酸、乙醇等物质，乙酸乙酯分解为乙醇、乙醛、乙烯等物质。研究结果表明，低温等离子体催化技术是一种有效的环保降解VOCs的方法。
关键词：低温等离子体；VOCs；甲苯；丙酮；乙酸乙酯；催化降解；Fe-Cu/H2O2
Abstract:
In this study, low-temperature plasma-catalytic technology was used to degrade mixed volatile organic compounds (VOCs) including toluene, acetone, and ethyl acetate. The experimental results showed that under the auxiliary catalysis of Fe-Cu/H2O2, the OH radicals generated by the low-temperature plasma generator could effectively degrade mixed VOCs, and the degradation efficiency of toluene was the highest. Under the conditions of 50℃, Fe-Cu/H2O2 mass ratio of 1:1, catalyst dosage of 1.2g/L, and air flow rate of 300mL/min, the elimination rate of toluene was 87.5%; the elimination rate of acetone was 79.9% and the elimination rate of ethyl acetate was 66.6%. At the same time, based on the GC-MS analysis of the degradation products, it was found that toluene was decomposed into benzene, phenol, benzyl alcohol and other substances, acetone was decomposed into acetaldehyde, acetic acid, ethanol and other substances, and ethyl acetate was decomposed into ethanol, acetaldehyde, ethylene and other substances. The results showed that low-temperature plasma-catalytic technology is an effective method for environmentally friendly degradation of VOCs.
Keywords: low-temperature plasma; VOCs; toluene; acetone; ethyl acetate; catalytic degra
dation; Fe-Cu/H2O
Volatile organic compounds (VOCs) are a major contributor to air pollution and can have harmful effects on human health and the environment. To address this issue, researchers have been exploring various methods for the degradation of VOCs. In recent years, low-temperature plasma-catalytic technology has emerged as a promising approach.
In this study, the researchers investigated the use of low-temperature plasma-catalytic technology for the degradation of three different VOCs: toluene, acetone, and ethyl acetate. They used a Fe-Cu/H2O catalyst in combination with a non-thermal plasma reactor to break down these VOCs into less harmful substances.
The results showed that the plasma-catalytic system was effective in degrading all three VOCs. Toluene was decomposed into benzene, phenol, benzyl alcohol, and other substances; acetone was decomposed into acetaldehyde, acetic acid, ethanol, and other substances; and ethyl acetate was decomposed into ethanol, acetaldehyde, ethylene, and other substances. These products are less harmful and easier to manage than the original
VOCs.
Overall, this study demonstrates that low-temperature plasma-catalytic technology is a promising approach for the environmentally friendly degradation of VOCs. With further development, this technology could have significant implications for air pollution control and human health
In addition to its potential for air pollution control, low-temperature plasma-catalytic technology may also have applications in other fields. For example, it could be used for the removal of VOCs from indoor environments, such as homes and workplaces, where these compounds can accumulate and lead to health problems.
Furthermore, this technology may be useful in the treatment of contaminated wastewater. Many industrial processes generate wastewater that contains high levels of organic pollutants, including VOCs. Currently, these pollutants are often removed using traditional treatment methods, such as activated sludge processes, which are energy-intensive and costly. Low-temperature plasma-catalytic technology could provide a more efficient and cos
t-effective alternative for the removal of VOCs from wastewater.
Finally, it is worth noting that low-temperature plasma-catalytic technology is not without its challenges. One significant challenge is optimizing the plasma-catalyst design to achieve maximum efficiency for different VOCs. This requires extensive experimentation and optimization to identify the most effective catalyst materials, plasma discharge conditions, and operating parameters for a given VOC.
Another challenge is scaling up this technology for industrial applications. While laboratory-scale tests have shown promising results, scaling up the technology requires significant capital investment and engineering expertise to ensure reliable and efficient operation on a large scale.
In summary, low-temperature plasma-catalytic technology has shown promise as a novel approach for the environmentally friendly degradation of VOCs. This technology offers several advantages over traditional methods, including lower energy consumption, higher efficiency, and less harmful byproducts. With further development and optimization, this tec
reactor technologyhnology could have a significant impact on air pollution control, human health, and water treatment

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