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Control water molecules across carbon-based nanochannels

Chinese Physics B 2018年第1期27卷 127-135页

作者：孟现文黄吉平 School of Physics China University of Mining and Technology Department of Physics Fudan University State Key Laboratory of Surface Physics Fudan University

It is important to know the mechanisms of water molecules across carbon-based nanochannels, which is not only beneficial for understanding biological activities but also for designing various smart devices. Here we review the recent progress of research tbr water transfer across carbon-based nanochannels. In this review, we summarize the recent methods which can affect water molecules across these nanochannels. The methods include exterior factors （i.e., dipolar molecules and gradient electric fields） and interior factors （namely, cone-shaped structures, nonstraight nanochannels, and channel defects）. These factors can control water permeation across nanochannels efficiently.

关键词： carbon nanotube water molecules flow enhancement confinement

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Bio-Diesel Based Additive for Enhancing flow of Emulsion in Pipeline

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Advances in Chemical Engineering and Science 2016年第3期6卷 288-293页

作者： Fadairo Adesina Anawe Paul Oladepo David Adeyemi Gbadegesin Covenant University Ota Nigeria

Emulsions are difficult to transport in the oil and gas industry due to its water content and high viscosity property, thus a need arises to break these emulsions down into lighter emulsions that would make it a lot more suitable for transportation. In this research, biodiesel was synthesized and used to break down relatively viscous emulsion samples into lighter emulsion samples. An apparatus was designed with the aim of determining the flowrate of four different samples in different proportions and compositions: 80% oil and 20% water (sample A), 90% sample A + 10% of biodiesel by volume (sample B), 75% of sample A + 25% of biodiesel by volume (sample C), 60% of sample A + 40% biodiesel by volume (sample D). The results showed that it was possible to significantly increase the flow of emulsions by injecting biodiesel, which was acted as a surfactant, resulting in the lowering of the surface tension of the emulsion sample. The relevance of this research work is validated as it proffers a solution to the transportation of heavy oil and emulsions from all over the world possessing the non-Newtonian flow behavior, which results in serious problems related to its transportation.

关键词： Emulsion Biofuel flow enhancement Pipeline Additive

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