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Application of Hydrophilic–Lipophilic Deviation Equations to the Formulation of a Mixed-Surfactant Washing Agent for Crude Rice Bran Oil Removal from Spent Bleaching Earth
Journal of Surfactants and Detergents ( IF 1.6 ) Pub Date : 2021-06-22 , DOI: 10.1002/jsde.12535 Gitsada Panumonwatee 1 , Ampira Charoensaeng 2 , Noulkamol Arpornpong 1
Journal of Surfactants and Detergents ( IF 1.6 ) Pub Date : 2021-06-22 , DOI: 10.1002/jsde.12535 Gitsada Panumonwatee 1 , Ampira Charoensaeng 2 , Noulkamol Arpornpong 1
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In Thailand, spent bleaching earth (SBE) (20–40 wt.% remaining oil), an industrial waste from edible oil refineries, has usually been disposed of by improper landfilling at industrial sites. This study aims to formulate microemulsion-based washing solutions from mixed surfactants for cleaning SBE contaminated with crude rice bran oil using the hydrophilic–lipophilic deviation (HLD) concept. Binary nonionic-anionic surfactant mixtures consisting of System A (Dehydol LS3TH-Levenol WX), System B (Dehydol LS5TH-Levenol WX), and System C (Dehydol LS7TH-Levenol WX) were formulated for use as microemulsion-based washing formulations. A HLDmixed equation extended with the excess free energy term (GEX/RT) was developed and proposed for predicting the optimum salinity. The optimum salinities obtained from the HLDmixed equation were close to those obtained from the phase behavior. In the SBE washing study, the mixed-surfactant systems showed a washing efficiency of 90% with low surfactant adsorption capacity on bleaching earth (qmax = 0.01–0.03 mol g−1). The mixed surfactants showed improved washing performance compared to that of the single-surfactant system. This work highlights the utility of using the HLD concept in designing microemulsion-based washing formulations from surfactants for the removal of vegetable oil from SBE.
中文翻译：
亲水-亲油偏差方程在配制混合表面活性剂清洗剂中的应用，用于从废漂白土中去除粗米糠油
在泰国，食用油精炼厂产生的工业废物用过的漂白土 (SBE)（20–40 wt.% 剩余油）通常在工业场所通过不当的垃圾填埋进行处理。本研究旨在使用亲水亲油偏差 (HLD) 概念，从混合表面活性剂中配制基于微乳液的洗涤溶液，用于清洗被粗米糠油污染的 SBE。由系统 A（Dehydol LS3TH-Levenol WX）、系统 B（Dehydol LS5TH-Levenol WX）和系统 C（Dehydol LS7TH-Levenol WX）组成的二元非离子-阴离子表面活性剂混合物被配制用作基于微乳液的洗涤配方。甲HLD混合方程扩展与过量自由能术语（G EX/RT) 被开发和提议用于预测最佳盐度。从 HLD混合方程获得的最佳盐度与从相行为获得的盐度接近。在 SBE 洗涤研究中，混合表面活性剂系统显示出 90% 的洗涤效率，并且在漂白土上的表面活性剂吸附能力较低（q max = 0.01–0.03 mol g -1）。与单一表面活性剂体系相比，混合表面活性剂表现出更好的洗涤性能。这项工作强调了使用 HLD 概念从表面活性剂中设计基于微乳液的洗涤配方的实用性，以从 SBE 中去除植物油。
更新日期：2021-06-22
中文翻译：
亲水-亲油偏差方程在配制混合表面活性剂清洗剂中的应用，用于从废漂白土中去除粗米糠油
在泰国，食用油精炼厂产生的工业废物用过的漂白土 (SBE)（20–40 wt.% 剩余油）通常在工业场所通过不当的垃圾填埋进行处理。本研究旨在使用亲水亲油偏差 (HLD) 概念，从混合表面活性剂中配制基于微乳液的洗涤溶液，用于清洗被粗米糠油污染的 SBE。由系统 A（Dehydol LS3TH-Levenol WX）、系统 B（Dehydol LS5TH-Levenol WX）和系统 C（Dehydol LS7TH-Levenol WX）组成的二元非离子-阴离子表面活性剂混合物被配制用作基于微乳液的洗涤配方。甲HLD混合方程扩展与过量自由能术语（G EX/RT) 被开发和提议用于预测最佳盐度。从 HLD混合方程获得的最佳盐度与从相行为获得的盐度接近。在 SBE 洗涤研究中，混合表面活性剂系统显示出 90% 的洗涤效率，并且在漂白土上的表面活性剂吸附能力较低（q max = 0.01–0.03 mol g -1）。与单一表面活性剂体系相比，混合表面活性剂表现出更好的洗涤性能。这项工作强调了使用 HLD 概念从表面活性剂中设计基于微乳液的洗涤配方的实用性，以从 SBE 中去除植物油。
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