Lied Eduardo Borges, Morejon Camilo Freddy Mendoza, Basso Rodrigo Leonardo de Oliveira, Trevisan Ana Paula, Bittencourt Paulo Rodrigo Stival, Fronza Fábio Luiz
a Department of Biological and Environmental Sciences, Federal University of Technology - Paraná , Medianeira , Brazil.
b Postgraduate Program of Chemical Engineering, West Paraná State University , Toledo , Brazil.
Environ Technol. 2019 Jul;40(17):2276-2289. doi: 10.1080/09593330.2018.1440010. Epub 2018 Feb 26.
For the photocatalytic degradation of the hydrogen sulphide (HS) in the gas-phase it was developed a rectangular reactor, coated with acrylic paint supported on fiber cement material. The surface formed by the paint coverage was characterized structural and morphologically by scanning electron microscopy with energy dispersive X-ray and X-ray diffraction analysis. The flow rate and the inlet concentration of HS were evaluated as operational performance parameters of the reactor. Removal efficiencies of up to 94% were obtained at a flow rate of 2 L min (residence time of 115 s) and inlet concentration of 31 ppm of HS. In addition, the HS degradation kinetics was modelled according to the Langmuir-Hinshelwood (L-H) model for the inlet concentrations of 8-23 ppm of HS. The results suggest that flow rate has a more important influence on photocatalytic degradation than the inlet concentration. It is assumed that HS has been oxidized to , a condition that led to a deactivation of the photocatalyst after 193 min of semi-continuous use.
为了对气相中的硫化氢（HS）进行光催化降解，开发了一种矩形反应器，该反应器涂覆有支撑在纤维水泥材料上的丙烯酸涂料。通过带有能量色散X射线的扫描电子显微镜和X射线衍射分析对涂料覆盖形成的表面进行了结构和形态表征。评估了HS的流速和入口浓度作为反应器的运行性能参数。在流速为2 L min（停留时间为115 s）且HS入口浓度为31 ppm时，去除效率高达94%。此外，针对8 - 23 ppm的HS入口浓度，根据朗缪尔 - 欣谢尔伍德（L - H）模型对HS降解动力学进行了建模。结果表明，流速对光催化降解的影响比入口浓度更为重要。据推测，HS已被氧化为 ，这种情况导致在半连续使用193 min后光催化剂失活。
