Recovery of Alcohol Ethoxylates Nonionic Surfactant using Co-Current Vacuum Stripping

Influence of Hydrophobe Structure on Biodegradation Pathways of Nonionic Ethoxylates

The structure of the hydrophobe in alcohol ethoxylates (AE) and alkylphenol ethoxylates (APE) has a significant influence on the biodegradation pathways and biodegradation rates of these nonionic surfactants in bacterial inocula present in waste treatment plants. APE undergo initial microbial attack at the terminal part of the polyoxyethylene (POE) chain followed by a shortening of the POE chai...

Alcohol Ethoxylates proposed draft factsheet

Study of the Cloud Point of Nonionic Surfactant and Nonionic-cationic Surfactant Mixture: Effect of Electrolytes

Clouding phenomenon generally occurs with nonionic surfactants when the temperature of the system is raised to a certain value. This critical temperature is termed the cloud point (CP). The aqueous solutions of nonionic surfactants show complex phase behaviour including liquid-liquid phase separation at this temperature. The cloud point of aqueous surfactant solutions is influenced by the prese...

Formation of CdS Nanoparticles in Microemulsion Using Different Co-surfactant and Water to Surfactant Molar Ratio

Cadmium Sulphide (CdS) nanoparticles were prepared using microemulsion method using cadmium chloride as cadmium source and sodium sulphide as sulphur source. The obtained nanoparticles structures were characterized by X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM) whereas optical characterization was done by Ultra Violet-Visible absorption. XRD result shows that CdS nanopart...

Continuous Recovery of Gold(III) via Foam Separation with Nonionic Surfactant

A continuous recovery of Au(III) via foam separation from its hydrochloric acid solutions was studied using a nonionic surfactant: polyoxyethylene nonyl phenyl ether having 20 ethylene oxide units (PONPE20). The surfactant showed a strong affinity to Au(III) in HCl media, and successfully played a dual role for foamproduction and metal-collection in the system. Experimental parameters examined ...