Silver oxide nanoparticle-containing fly ash adsorbent
AssigneesKing Fahd University of Petroleum and Minerals, King Abdulaziz City for Science and Technology
InventorsBassam Shafiq Tawabini, Muataz Ali Atieh, Faraj Ahmad Abuilaiwi, Según Biodun Adebayo
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Abstract
Methods and compositions for the adsorptive removal of methyl tertiary butyl ether (MTBE) from contaminated water sources and systems. The compositions contain acid-treated fly ash particles containing carbon, oxygen, and sulfur, and silver oxide nanoparticles having diameters in a range of 1-10 nm such that the silver oxide nanoparticles are present on the surface and in pore spaces of the acid-treated fly ash particles. The composition is in the form of particles having sizes in a range of 100 nm to 2.5 μm. Methods of preparing and characterizing the adsorbents are also provided.
Claims7
A composition for removing MTBE from an aqueous solution, comprising:
- acid-treated fly ash particles;
- and
- silver oxide nanoparticles having diameters in a range of 1-10 nm;
- wherein the acid-treated fly ash particles consist of carbon, oxygen, and sulfur;
- wherein the silver oxide nanoparticles are present on the surface and in pore spaces of the carbon acid-treated fly ash particles;
- wherein the composition is in the form of particles having sizes in a range of 100 nm to 2.5 μm and the particles have an orbicular structure with surface pores to which the silver oxide nanoparticles bind,
- wherein the acid-treated fly ash particles and the silver oxide nanoparticles are present in the composition at mass percentages of 50-90% and 10-50%, respectively, based on the total weight of the composition,
- wherein the acid-treated fly ash particles are prepared by:
- stirring a raw fly ash with nitric acid to form a slurry;
- and
- washing the slurry to produce the acid-treated fly ash particles.
Dependencies are inferred from the claim text.