Research Abstracts

Pore-filled cation-exchange membranes containing poly(styrenesulfonic acid) gels have been prepared by a twostep procedure involving thermally initiated radical copolymerization of styrene and divinylbenzene in the pores of a microporous poly(ethylene) host followed by treatment with chlorosulfonic

2 2 Nanofiltration of saturated calcium sulfate solution of 0.02 mol/L calcium content, with CO3 !/SO4 ! molar ratio !3 !4 2 ranging from 0.0500 to 2.8×10 was carried out in 6.5×10 m active membrane area laboratory module at 1.2×106 Pa transmembrane pressure using the total retentate recycle mode. P

In this paper, performance of different pretreatment systems used in the seawater reverse osmosis desalination process is presented. The different pretreatment techniques analyzed included conventional media-filtration technique and non-conventional membrane filtration techniques. For the membrane f

The Rus-Umm Er Radhuma aquifer in Bahrain is a non-renewable source of brackish water (8–15 g/L), which forms a lens underlain everywhere with brines of over 100 g/L. Aquifer utilization has started in 1984 to feed a reverse osmosis (RO) desalination plant, with an economic life of 25 years (2010).

With the aim of obtaining RO membranes for brackish water desalination from purified celluloses (cotton linters and bleached bagasse pulp), two reactions (heterogeneous and homogeneous**) were applied for the synthesis of cellulose acetate (CA). The efficiency of the membranes was measured and compa

Equations for the thermodynamic properties of aqueous sodium chloride near its vapour pressure are presented. The equations are functions of temperature and concentration, and may be used to estimate aqueous sodium chloride’s solubility, density, vapour pressure, specific enthalpy and entropy. They

The high amino acid content (lysine, meteonin and tryptofan) of most leaf proteins makes them suitable as supplements for cereal flours, which are deficient in these amino acids. These proteins are used in cattle balanced foods. In this work, separative membrane technology, ultrafiltration (UF) and

This paper presents an investigation on the removal of hardness by using a crossflow membrane reactor. Lime soda (LS) and caustic soda (CS) were added to hard water as softening chemical agents. The effect of the LS–CS dosage, specific cake resistances (") and transmembrane pressure drop ()P) on ste

A wide spectrum of reactive networks and graft copolymers of acrylamide and acrylic acid, alone or with some binary monomers, have been synthesized by benzoyl peroxide as an initiator using glutaraldehyde as the crosslinker and have been characterized by water uptake studies. It was observed that th

The influence of process conditions such as feed rate, calcium/carbonate ratio, pH, complexing agents [ethylenediaminetetraacetic acid (EDTA), citrate (CIT)] and their concentration on the average particle size and shape of precipitated calcium carbonate was studied. The precipitation was performed