|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|6466281||1422960||2017||7 صفحه PDF||سفارش دهید||دانلود کنید|
- Iron carbon catalysts obtained by chemical activation of dry biosolids with FeCl3.
- Those catalysts proved to be active in CWPO of antipyrine.
- The main feature of the catalysts was a high stability.
- Complete conversion of antipyrine and 70% TOC removal were achieved.
Highly stable iron on activated carbon catalysts were prepared by chemical activation of dry sewage sludge with iron chloride at different mass ratios (MRÂ =Â mass of activating agent per unit mass of precursor). The iron content of the resulting catalysts varied between 5.2% and 7.3%. They showed a well-developed porosity, with BET surface areas above 800Â m2/g, despite the high amount of inorganic matter of the sewage sludge used as precursor. TEM images confirmed the presence of iron nanoparticles sized between 3 and 11Â nm fairly well dispersed. The catalysts were tested batchwise in the CWPO of antipyrine, a recognized emergent pollutant. Working with 500Â mgÂ·Lâ1 of the catalyst prepared with MRÂ =Â 3 complete conversion of antipyrine (20Â mgÂ·Lâ1) and almost 70% of TOC reduction were achieved in 1Â h with the stoichiometric theoretical amount of H2O2, at pHÂ =Â 3 and 50Â Â°C. This catalyst showed a high stability, in long-term (80Â h on stream) continuous experiments where almost negligible iron leaching was observed.
Journal: Chemical Engineering Journal - Volume 318, 15 June 2017, Pages 224-230