Journal: Processes
Article Title: Recovery and Reuse of Acetone from Pharmaceutical Industry Waste by Solar Distillation
doi: 10.3390/pr13020361
Figure Lengend Snippet: Figure 6a1,a2 present SEM micrographs showing the morphology of the catalyst sur- face before and after treatment for hydrocarbon removal using acetone recovered through solar distillation. The images reveal the presence of some compounds adhering to the catalyst surface. After treatment with acetone and subsequent calcination, a slight phys- ical change is observed on the surface. The corresponding energy-dispersive spectra (Figure 6b1,b2) indicate that the untreated catalyst contains a high carbon content of 78.92% associated with hydrocarbons. Following treatment, the carbon content decreases by 29%, as evidenced in the spectra before and after treatment. The spectra also reveal the presence of S, V, and Fe peaks. These results align with previous studies, which report the deposition of V and S from heavy crude oil onto the catalyst during the reaction, contribut- ing to its reduced lifespan [30,31]. Furthermore, the presence of Br was detected, likely captured during calcination, as it is presumed that the muffle furnace was contaminated prior to the analysis.
Article Snippet: The composition analysis of the solid residue obtained at the end of the acetone recovery process by solar distillation was conducted using a spectrometer of X-ray photoelectron from JEOL JPS-9200 using the standard aluminum X-ray source.
Techniques: Distillation