Design of industrial wastewater demulsifier by HLD-NAC model

Abstract The chemical method is one of the treatment techniques for the separation of oil–water emulsion systems. The selection of appropriate demulsifiers for each emulsion system is the most challenging issue. Hydrophilic-lipophilic-deviation (HLD) is a powerful semi-empirical model, providing pre...

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Autores principales:	Hassan Ghasemi, Fatemeh Eslami
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5e4d91a5bf9d4e65ac4053dd2262d3d4
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spelling	oai:doaj.org-article:5e4d91a5bf9d4e65ac4053dd2262d3d42021-12-02T18:50:55ZDesign of industrial wastewater demulsifier by HLD-NAC model10.1038/s41598-021-95485-72045-2322https://doaj.org/article/5e4d91a5bf9d4e65ac4053dd2262d3d42021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95485-7https://doaj.org/toc/2045-2322Abstract The chemical method is one of the treatment techniques for the separation of oil–water emulsion systems. The selection of appropriate demulsifiers for each emulsion system is the most challenging issue. Hydrophilic-lipophilic-deviation (HLD) is a powerful semi-empirical model, providing predictive tools to formulate the emulsion and microemulsion systems. This work aims to apply HLD to obtain an optimal condition for demulsification of oil-in-water emulsion system—real industrial wastewater—with different water in oil ratios (WOR). Therefore, the oil parameter of the contaminant oil and surfactant parameter for three types of commercial surfactants were calculated by performing salinity scans. Furthermore, the net-average-curvature (NAC) framework coupled with HLD was used to predict the phase behavior of the synthetic microemulsion systems, incorporating solubilization properties, the shape of droplets, and quality of optimum formulation. The geometrical sizes of non-spherical droplets (L d , R d )—as an indicator of how droplet sizes are changing with HLD—were consistent with the separation results. Correlating L d /R d at phase transition points with bottle test results validates the hypothesis that NAC-predicted geometries and demulsification behavior are interconnected. Finally, the effect of sec-butanol was examined on both synthetic and real systems, providing reliable insights in terms of the effect of alcohol for WOR ≠ 1.Hassan GhasemiFatemeh EslamiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hassan Ghasemi Fatemeh Eslami Design of industrial wastewater demulsifier by HLD-NAC model
description	Abstract The chemical method is one of the treatment techniques for the separation of oil–water emulsion systems. The selection of appropriate demulsifiers for each emulsion system is the most challenging issue. Hydrophilic-lipophilic-deviation (HLD) is a powerful semi-empirical model, providing predictive tools to formulate the emulsion and microemulsion systems. This work aims to apply HLD to obtain an optimal condition for demulsification of oil-in-water emulsion system—real industrial wastewater—with different water in oil ratios (WOR). Therefore, the oil parameter of the contaminant oil and surfactant parameter for three types of commercial surfactants were calculated by performing salinity scans. Furthermore, the net-average-curvature (NAC) framework coupled with HLD was used to predict the phase behavior of the synthetic microemulsion systems, incorporating solubilization properties, the shape of droplets, and quality of optimum formulation. The geometrical sizes of non-spherical droplets (L d , R d )—as an indicator of how droplet sizes are changing with HLD—were consistent with the separation results. Correlating L d /R d at phase transition points with bottle test results validates the hypothesis that NAC-predicted geometries and demulsification behavior are interconnected. Finally, the effect of sec-butanol was examined on both synthetic and real systems, providing reliable insights in terms of the effect of alcohol for WOR ≠ 1.
format	article
author	Hassan Ghasemi Fatemeh Eslami
author_facet	Hassan Ghasemi Fatemeh Eslami
author_sort	Hassan Ghasemi
title	Design of industrial wastewater demulsifier by HLD-NAC model
title_short	Design of industrial wastewater demulsifier by HLD-NAC model
title_full	Design of industrial wastewater demulsifier by HLD-NAC model
title_fullStr	Design of industrial wastewater demulsifier by HLD-NAC model
title_full_unstemmed	Design of industrial wastewater demulsifier by HLD-NAC model
title_sort	design of industrial wastewater demulsifier by hld-nac model
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5e4d91a5bf9d4e65ac4053dd2262d3d4
work_keys_str_mv	AT hassanghasemi designofindustrialwastewaterdemulsifierbyhldnacmodel AT fatemeheslami designofindustrialwastewaterdemulsifierbyhldnacmodel
_version_	1718377448822800384

Design of industrial wastewater demulsifier by HLD-NAC model

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