09 فروردین 1403
ابوالفضل دهقان منفرد

ابوالفضل دهقان منفرد

مرتبه علمی: استادیار
نشانی: دانشکده مهندسی نفت، گاز و پتروشیمی - گروه مهندسی نفت
تحصیلات: دکترای تخصصی / مهندسی نفت
تلفن: 07731222600
دانشکده: دانشکده مهندسی نفت، گاز و پتروشیمی

مشخصات پژوهش

عنوان Wettability Alteration Modeling for Oil-Wet Calcite/Silica Nanoparticle System Using Surface Forces Analysis: Contribution of DLVO versus Non-DLVO Interactions
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
ثبت نشده‌است!
مجله INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
شناسه DOI https://doi.org/10.1021/acs.iecr.8b01918
پژوهشگران ابوالفضل دهقان منفرد (نفر اول) ، محمد حسین غضنفری (نفر دوم) ، محمد کاظمینی (نفر سوم) ، محمد جامی الاحمدی (نفر چهارم) ، عباس هلالی زاده (نفر پنجم)

چکیده

In this work, application of silica nanoparticles for wettability alteration of initially oil-wet calcite was investigated through analysis of surface forces and DLVO theory. Doing so, the wettability and zeta potential of calcite surfaces were measured through the sessile drop method and an inhouse experimental setup, respectively. Primary evaluation indicated that incorporating DLVO terms in the Frumkin?Derjaguin model was not sufficient to describe the wettability in an oil-wet calcite/nanofluid system. Sensitivity analysis showed that calculating the double-layer interaction using constant potential-constant potential boundaries along with structural hydrophobic forces (non-DLVO interaction) incorporation improved the modeling performance. Considering hydrophobic interactions through linear correlation between hydrophobicity and wettability change for both single-exponential and harmonic equations provided some confidence on the modeling approach. Moreover, structural forces were suggested to be introduced as a combination of hydrophobic/hydrophilic interactions corresponding to stearic acid-coated/silica nanoparticle-covered sites, respectively; which in turn demonstrated a successful prediction of measured wettability data.