Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Ultrafiltration


(Polyphenyl Sulfone - Polyether Sulfone) Blending to Performance Flat Sheet Membrane to Remove Some Heavy and Radioactive Elements from Phosphogypsum Waste

Waleed T.Rashid; Israa A. Alkadir; Moayyed G. Jalhoom; Khalid T. Rashid

Engineering and Technology Journal, 2021, Volume 39, Issue 3A, Pages 382-393
DOI: 10.30684/etj.2021.168119

In this research, the traditional version of the phase inversion method was used to fabricate a flat sheet of a blended membrane. The method was involved using a polymer that blends polyether sulfone (PES) varied proportions (0,3,4 and 5 wt.%), and polyphenyl sulfone (PPSU) was 20wt%. It was found that with the addition of PES, the membrane properties increased, the best properties were with 4%wt. The ratio was chosen PES 4wt% to study the effect of time, temperature, and pressure on the rejection of heavy and radioactive elements. The increase in the porosity was with the addition of 4% PES. The rejection of heavy and radioactive elements for thUF membrane increases with increasing of the operating pressure and time. While by increasing the temperature, the rejection of heavy and radioactive elements for thUF membrane decreased. The rejection of K, Th, and Pb are higher than other elements, the order of the rejection is K˃Th˃Pb˃U˃Cd˃Zn˃Cu>Ni.

Hollow Fiber Ultrafiltration Membrane for Methyl Green Dye Removal

Saja M. Alardhi; Jamal M. Alrubaye; Talib M. Albayati

Engineering and Technology Journal, 2020, Volume 38, Issue 7, Pages 1077-1083
DOI: 10.30684/etj.v38i7A.653

In this study, the behavior of a Polyvinyl chloride (18 wt % PVC) hollow fiber ultrafiltration (UF) membrane for methyl green (MG) dye removal from aqueous solution was estimated by studying the influence of varying the operation conditions (the concentration of the dye and volumetric flow rate) to determine their impact on the separation processes (permeate flux and rejection coefficient) at constant pressure and temperature. The PVC membrane was characterized by scanning electron microscopy. Furthermore, tests of the UF were carried out with pure water and MG aqueous solutions as feed. Outcomes explained a notable influence of feed concentration and flow rate on the rejection and permeate flux, with the highest rejection coefficient value close to 75.2% of the membrane system, at neutral pH.

The Influence of Operation Conditions on the Permeative Flux of (PVC/PS) Hollow Fiber Membrane

Qusy F.Alsalhy; Jamal M.Ali; Khitam S.Shaker

Engineering and Technology Journal, 2012, Volume 30, Issue 16, Pages 2767-2777

Membranes have gained an important place in chemical technology and are used
in a wide range of applications. This investigation has studied the effect of operating
conditions such as temperature, trans-membrane pressure and solute concentration
on the separation performance of (PVC/ PS) hollow fiber membrane, which was
prepared in the laboratory from 15% (PVC) and 2% (PS) using phase inversion
method. An attempt was done to investigate the ability of PVC/PS hollow fiber
membrane for ultrafiltration application. A (PVP) solute was used to measure (PVP)
rejection of prepared membrane.
The predicted flux was found to increase from (18.88 l/m2.hr) to 33.05 l/m2.hr)
when the operation temperature was increased from (10Ž) to (30Ž).While it
increased from (28.57 l/m2.hr) to (263.36 l/m2.hr) when the operation pressure was
increased from (1bar) to (3bar). It was also found to decrease from(17.97 l/m2.hr) to
(12.20 l/m2.hr) with increase solute concentration from (1000ppm) to (2500ppm).
The rejection efficiency was equal to (99.93%) when using (2500ppm) solute. This
is considered within UF range.