Abstract
This article describes a laboratory-based case study to remove methyl tertiary butyl ether (MTBE) from contaminated water with tungsten oxide (WO3) catalysts loaded with ruthenium (Ru) and platinum (Pt) metals. Characterization of the synthesized catalysts were conducted by using the: (i) X-ray powder diffraction (XRD) data for the purity, (ii) visible light reaction condition for MTBE, (iii) solid-phase micro-extraction (SPME) technique incorporated with gas chromatography mass spectrometry (GC-MS) to assist the MTBE photo-oxidation process, (iv) catalyst syntheses from different concentrations of Ru in WO3, nano-WO3, Pt in nano-WO3, and (v) formation of byproducts during photocatalytic degradation of MTBE by using the GC-MS. The results revealed that the catalysts mainly consists of WO3 phase and there is no additional peaks from the metals, indicating that the Ru and Pt metals are well dispersed on WO3. Approximately 96% to 99% of the MTBE removal can quickly and accurately be achieved with a nanostructured WO3 catalyst loaded with Pt under visible light radiation between 2.5h and 3h. Moreover, with a nanocomposite WO3 catalyst loaded with Pt, photocatalytic MTBE removal is higher than with the pure WO3 catalyst loaded with Ru, and the pure nanostructured and micron-sized WO3. Finally, the formation of byproducts during the MTBE photocatalytic degradation revealed that the MTBE degradation essentially proceeds via formation of formic acid and 1,1-dimethylethyl ester before its complete degradation.
Highlights
The unexpected accidental fuel leakage during storage and transportation is one of the concerns raised by the World Health Organization, and there are many studies have been conducted to remove methyl tertiary butyl ether (MTBE) from contaminated water
(a) MTBE photo-oxidation by 2.5 wt% of Pt loaded in Nano-WO3 catalyst
The authors remove MTBE from contaminated water with WO3 catalysts loaded with Ru and Pt metals-a laboratory-based case study conducted by: (i) synthesizing of noble metals (Ru/Pt) loaded on WO3, and nano-WO3, Pt in nano-WO3, (ii) determining the purity of the synthesized catalysts by X-ray powder diffraction (XRD) diffractometer and its software, (iii) developing visible light reaction condition for MTBE, (iv) investigating the MTBE photo-oxidation study, and (v) evaluating the formation of byproducts during photocatalytic degradation of the MTBE
Summary
The unexpected accidental fuel leakage during storage and transportation is one of the concerns raised by the World Health Organization, and there are many studies have been conducted to remove methyl tertiary butyl ether (MTBE) from contaminated water. To improve the octane number and increase the gasoline combustion efficiency, MTBE as the oxygenated chemical has been used by many research groups [1-3 and the references therein]. MBTE has been widely used as a gasoline additive by supplying extra oxygen during the combustion process. Human and environmental health concerns have been raised due to-mainly-accidental fuel leakage [4,5]. The United States Environmental Protection Agency put advisory regulations of 20 to 40 ppb [6, 7] in drinking water and banned MTBE
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: American Journal of Materials Synthesis and Processing
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
