King Saud University

Taieb Aouak

Zeid Abdullah ALOthman

Ahmed Yacine Badjah Hadj Ahmed

Wafa Nazal Alharbi

Manal Ahmed Gasmelseed Awad

Khalid Mustafa Osman Ortashi

Awatif Ahmed Hendi

Mohamed Ali Ouladsmane

Saba Ameen Al-Adeemy

Waseem Sharaf Saeed

Ahmad Almalki

Waseem Sharaf Shamsan Saeed

Abdel-Basit Al-Odayni

Abderahmane Abdullah Alwarthan

Abdullah Saad Alarifi

Abdullah Saad Aiarifi

A method of using a system includes injecting a liquid mixture from a reservoir to an upper cell; stirring the liquid mixture in the upper cell using a stirrer; separating a first organic constituent from the liquid mixture by absorbing the first organic constituent of the liquid mixture at a first peripheral section of a membrane thereby causing a retentate comprising a second organic constituent and a solvent to reside in the upper cell; desorbing the first organic constituent of the liquid mixture at a second peripheral section of the membrane to obtain a first organic constituent permeate vapor; receiving the first organic constituent permeate vapor in a third feed line of a lower cell; receiving the retentate in a second feed line of the upper cell; and sending the retentate to the reservoir via the second feed line.

Selective extraction of thiophene from thiophene/n-heptane using a poly(vinyl acetate)/water membrane system

A method of making benzalaniline, the method comprising: providing benzaldehyde and aniline; performing a condensation reaction using a solvent; extracting water from the condensation reaction using a pervaporation system, wherein a poly(vinyl alcohol) PVA membrane is in the pervaporation system; and obtaining benzalaniline.

Method to selectively produce benzalaniline from a Schiff-base reaction involving aniline and benzaldehyde

The extraction of benzene from benzene/cyclohexane mixture described herein is a process that removes benzene from a benzene/cyclohexane mixture with high selectivity, resulting in an enriched cyclohexane content in the retentate. The process involves adding an aqueous solution of poloxamer 188 to the benzene/cyclohexane mixture and waiting for the mixture to partition into an organic layer above an aqueous layer. Benzene, being more polar than cyclohexane, is selectively drawn into the aqueous layer. Benzene is then removed from the aqueous layer by pervaporation through a composite PDMS (polydimethylsiloxane)/polystyrene membrane. Cyclohexane is recovered from the retentate by drawing off the organic layer of the retentate by any known method. About 97% of benzene has been removed from a 50-50 wt % mixture by pervaporation in the static mode, and about 99% by pervaporation in the continuous mode.

Extraction of benzene from benzene/cyclohexane mixture

A method of synthesizing a nanocomposite film including starch nanofibers includes preparing nanofibers from starch, mixing the starch nanofibers with a drug to form a first mixture, adding water to the mixture to provide an aqueous solution, adding hydrochloric acid (HCl) and glycerol to the aqueous solution to provide a second mixture, maintaining the second mixture in a water bath, and drying the second mixture to form a nanocomposite film including starch nanofibers. The drug can be a drug including carboxylic groups. The drug can be acetyl salicylic acid (AsA). The film can be a nano starch/AsA composite film or nanocomposite film. The nanocomposite film can be used as a drug carrier and, thereby, improve drug delivery.

Method of preparing a nanocomposite film including starch nanofibers

Products and processes relating to the synthesis of copolymers or terpolymers are described. In particular, poly(acrylic acid-co-acrylate ester), poly(methacrylic acid-co-methacrylate ester), poly(acrylic acid-co-acrylate ester(I)-co-acrylate ester(II)), or poly(methacrylic acid-co-methacrylate ester(I)-co-methacrylate ester(II)), by esterification of polyacrylic or polymethacrylic acid with alcohols assisted by the pervaporation technique for extracting water are described.

Synthesis of acrylic or methacrylic acid/acrylate or methacrylate ester polymers using pervaporation

Growing community of inventors

Riyadh, Saudi Arabia

Taieb Aouak