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Internal Project
The strong interest in polymer–surfactant
interactions has been driven in part by the use of
mixtures of polymers and surfactants in many
commercial products and processes, as diverse
as water treatment. In many wastewater
applications, a highly charged cationic coagulant
is employed to neutralize the natural negative
charges of dispersed particles or oil. The chargeneutralized
particles are then more readily
coagulated with mixing.
In this work, four nonionic polyelectrolytes
were prepared by amidation of oleic acid and
diethylene triamine. The later compound was
ethoxylated by introducing 5,10, 20, and 30
ethylene oxide units. Also, three compounds of
acrylic acid (different molecular weight 5000,
55000 and 100000) were prepared. The
chemical structures of the prepared
polyelectrolytes were elucidated using Fourier
transform-infrared (FT-IR), 1HNMR spectra and
GPC. The surface and thermodynamic
parameters of the prepared demulsifiers were
determined at 25 ºC including, surface tension
(γ), and effectiveness, maximum surface excess
(Γmax) and minimum surface area (Amin).
The performance of the prepared
polyelectrolytes, individually and their mixtures
between them, was tested on polluted water (oil
–in-water = 200 ppm and total suspended solid
(TSS) = 6mg /l.) Results show that the
polyectrolytes performance increases with
increasing the ethylene oxide units (5 to 20
ethylene oxide units). The compound with (20
eo) gives low oil in water (10ppm) and total
suspended solid (TSS) is 1g/l
Team Work
Principal investigator
Dr. Mahmoud Reyad Noor El-Din
Vice Principal Investigator:
Dr. Mohamed Abd Al-Latef Al-Shafi
Team Work:
Dr. Khalid Kabel
Dr. Marwa R. Mishrif
Ass. Researcher:Ibrahem Mahmoud Nassar
Ass. Researcher: Sayed Al-Sharaky
Consultants:
Prof.: Salah Khalil
Prof.: Ahmed M. Al-Sabagh.
Prof. : Mohamed El-Sukary
EPRI Annual Report 2012 32