Iranian Research Organization for Science and Technology Journal of Particle Science and Technology 2423-4087 2 1 2016 03 01 The measurement of droplet size distribution of water-oil emulsion through NMR method 31 39 360 10.22104/jpst.2016.360 EN Arash Amani Department of Chemical Engineering, University of Isfahan, Isfahan, Iran Ali Reza Solaimany Nazar Department of Chemical Engineering, University of Isfahan, Isfahan, Iran Hasan Sabzyan Department of Chemistry, University of Isfahan, Isfahan, Iran Gholamhassan Azimi Department of Chemistry, University of Isfahan, Isfahan, Iran Journal Article 2016 04 14 The effects of water/oil volume ratio, type and concentration of demulsifier, water salinity and mixing speed on the average water droplets size in water-oil emulsion are evaluated at different times through NMR measurements.The type and concentration of demulsifier have the greatest effects on the average droplet size with 38% and 31.5%, respectively. The water/oil volume ratio, water salinity and mixing speed are significant factors with 13.1%, 7.5% and 5.71%, respectively. The commercial demulsifier Break 6754 has the greater influenceon the average droplet size compared to the acrylic acid. The water droplets size increases upon increasing the concentration of demulsifier, the water volume ratio and the salinity of water and decreases upon increasing the mixing speed. https://jpst.irost.ir/article_360_7be36ce5ba3b7e69907255fb24fe156f.pdf