01628nab a2200205 4500 20260520000928.0 260224s2011 xxu Investigation on asphaltene and heavy metal removal from crude oil using a thermal effect ene./feb. 2011 04/04/2011 ; 04/04/2011 7 p. ; 300–306 Transcripción del resumen del autor. Removal of asphaltenes and heavy metals, using asymmetric ceramic monolith membranes with pore sizes of 0.2 µm and 50 nm, was investigated for three Iranian crude oils. The experiments were conducted in a batch filtration unit at a pressure gradient of 200 kPa and temperature range of 75-190 °C based on the amount of crude oil asphaltene contents. The investigated crude oils consisted of 1-10 wt % asphaltene contents. During heating of crude oils to specified temperatures, nanometer particles of asphaltene aggregated to micrometer size and then micrometer particles were separated smoothly using the membranes. The obtained results illustrated that asphaltene separation reached 60-87 wt % based on the asphaltene content of crude oils. In addition, the separation of asphaltene and heavy metals, such as nickel and vanadium, increased using the membrane of a smaller pore size. Besides, densities and viscosities of crude oils showed a sufficient decline after filtration through the membrane. 1 Energy & fuels 25 ARTICULO Ashtari, M. 45054 Bayat, M. 45055 Sattarin, M. 45056 174407 174407 0 0 0 0 242226 BAAB BAAB 2026-03-05 200052423 0 200052423 2026-03-05 16:11:50 2026-03-05 ARTICULO