This paper presents the feasibility of the removal of asphaltenes from aqueous solutions by using low- cost natural adsorbents such as light expanded clay aggregate (LECA), perlite and bentonite. The structure of adsorbents was characterized by XRD, FTIR, and SEM before and after the adsorption of asphaltenes. The effect of the adsorbent type, initial asphaltene concentration, particle size of ...

The influences of several operating factors on the viscosity of the Isfahan refinery waxy crude oil sample are studied through conducting some rheological shear rotational tests. The Taguchi design method is adopted to determine the impact of factors such as shear rate, temperature, cooling rate, wax content, and asphaltene content on the viscosity of the waxy crude oil. The results show that t...

Abstract Asphaltene Precipitation is a major issue in both upstream and downstream sectors of the Petroleum Industry. This problem could occur at different locations hydrocarbon production system i.e., reservoir, wellbore, flowlines network, separation refining facilities, during transportation process. precipitation begins due to certain factors which include variation crude oil composition, c...

Radar has been used for remote sensing and surveillance for decades. Nowadays radar remote sensing and radar surveillance is used for many different things in the modern society. Radar can sense objects or environments from very long distance. Electromagnetic radar waves can work where and when light cannot. This unique ability of radar made remote sensing techniques available in research and i...

The ignition, combustion characteristics, and cenosphere formation of single droplets four vacuum residues (VRs) from different refineries with various asphaltene contents were studied experimentally. VRs suspended at the tip a silicon carbide fiber heated in air temperatures 973 1023 K, respectively, an electrically tube furnace. ignition behavior recorded using CCD camera, which enabled deter...