Mixing Effect of Anionic and Nonionic Surfactants on Micellization, Adsorption and Partitioning of Nonionic Surfactant

Abstract

<p class="MsoNormal" style="margin: 0cm 0cm 4pt; line-height: 12pt; mso-line-height-rule: exactly;"><span style="font-size: 10pt;" lang="EN-US"><span style="font-family: Times New Roman;">Nonionic surfactants are always good candidates for surfactant enhanced aquifer remediation (SEAR), enhanced oil recover (EOR) and insitu/ex-situ soil washing. Their wide application is based on their high solubilization capacities and their low bio-toxicity. However, surfactant loss due to adsorption and/or partitioning on adsorbents impairs their effectiveness to solubilize/mobilize and reduce the oil–water interfacial tension (IFT) which renders contaminant remediation process economically unfeasible. In this research anionic (SDS) and nonionic (TX100) surfactants and their mixtures (1:2, 1:1, 2:1; TX100:SDS mass ratios) were evaluated for their ability to reduce surfactant CMCs, partitioning losses to an organic phase and/or adsorption to shale. Result showed that all mixtures behave similarly and have superior properties than both single surfactants. Partitioning and adsorption of TX100 into organic phase (Sarapar147) and shale were decreased by mixing with anionic surfactant (SDS). The data showed a 40% reduction in surfactant losses due to adsorption to shale and around 60% reduction due to both partitioning and adsorption.</span></span></p

Synthesis of stable nanoparticles at harsh environment using the synergistic effect of surfactants blend

“…Nonionic ethoxylated surfactants are generally soluble in water, having low CMC and good stability in high salinity conditions 18 while they are not effective for high temperature condition 19 . Surfactants that have an ethoxylated group have tendency to pick up water molecules and hydrate, which could improve the solubility of this class of surfactants.…”

The influence of time reaction to characteristic of methyl ester sulfonate from seed oil ketapang

“…This surfactant was synthesized from petrochemicals, which are non renewable resources therefore alternative resources of surfactants is necessary. There are four types of surfactants, namely nonionic, anionic, cationic and amphoteric [1]. The anionic surfactants are type of surfactant widely used in many industries.…”

A Novel Sulfonated Alkyl Ester Surfactant to Reduce Interfacial Tensions in a Wide Range Salinity with Monovalent and Divalent Ions

“…In its application in reservoir sandstone, nonionic and anionic surfactants are commonly used to prevent adsorption of the surfactant on the rock. Nonionic surfactant generally has a good solubility in water, low CMC (Muherei & Junin, 2008), favorable in industrial uses because of its weak foaming property, widely useful as emulsifying and dispersing agent (Fujimoto, 1985), has a good stability in high salinity condition (Muherei & Junin, 2008). However, nonionic surfactant is not really good to apply in a high temperature condition (Salanger, 2002;Fujimoto, 1985).…”