School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China.
School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China; State Key Laboratory of Petroleum Pollution Control, Beijing 102206, China.
J Hazard Mater. 2022 Oct 15;440:129751. doi: 10.1016/j.jhazmat.2022.129751. Epub 2022 Aug 15.
The simultaneous treatment of HS and NH typical odours by plasma was investigated and the co-treatment of both was found to have a facilitating effect the conversion. The degradation efficiency and by-product emissions of single plasma technology and plasma co-catalytic two-stage technology were compared and the degradation mechanism was further analyzed. The results show that in the single plasma technology conversion experiment, the conversion rate of the treated odours mixture is higher than that of the treated single odours, and the by-product emissions of SO and NO are also reduced due to the reaction of intermediate products and by-products during the reaction process. The absolute removal of the odours mixture is optimal when treating at a gas flow rate of 6 L/min, a voltage of 16 kV and a frequency of 200 Hz. The M(Ce,Cu)-Mn/13X loaded catalyst was synthesized by co-precipitation method. Under the conditions of gas flow rate of 3-7 L/min, the efficiency of HS and NH removal and the reduction of by-product emission were ranked as: uncatalyzed > Cu-Mn/13X > Ce-Mn/13X, which proved that Ce-Mn/13X showed better catalytic activity and application value.
采用等离子体同时处理 HS 和 NH 典型气味，并发现两者的共同处理具有促进转化的效果。比较了单等离子体技术和等离子体共催化两段式技术的处理效率和副产物排放，并进一步分析了降解机制。结果表明，在单等离子体技术转化实验中，处理气味混合物的转化率高于处理单一气味的转化率，并且由于中间产物和副产物在反应过程中的反应，SO 和 NO 的副产物排放也减少了。在气流速率为 6 L/min、电压为 16 kV 和频率为 200 Hz 的条件下，处理气味混合物的绝对去除率最佳。采用共沉淀法合成了 M(Ce，Cu)-Mn/13X 负载催化剂。在气流速率为 3-7 L/min 的条件下，HS 和 NH 的去除效率和副产物排放的减少程度依次为：无催化剂>Cu-Mn/13X>Ce-Mn/13X，这证明 Ce-Mn/13X 表现出更好的催化活性和应用价值。
