Research Abstracts

Sorption and pervaporation experiments were carried out with PVA/PAA cross-linked membranes for the separation of azeotropic methyl tert-butyl ether and methanol mixtures. The influence of the PVA/PAA ratio and liquid mixture composition were investigated. With increasing PAA content in the membrane

This study focuses on measuring the process dynamics for the multistage flash desalination process (MSF) in an industrial unit with a capacity of 4546 m3/d. This is a novel addition to the literature because previous studies are limited to theoretical analysis of process dynamics or controller tunin

Coupled transport of thiocyanate ions through a liquid membrane containing quaternary ammonium chloride salts in chloroform was examined. The influences of the carrier type in the membrane phase on the coupled transport of thiocyanate ions were investigated. The kinetics of the coupled transport wer

We proposed a newly designed, compact multiple-effect diffusion-type solar still consisting of a heat-pipe solar collector and a number of vertical parallel partitions in contact with saline-soaked wicks. The solar collector and the vertical multiple-effect diffusion-type solar still can be folded o

A two-chamber hydraulic energy recovery unit with a programmable controller and a data acquisition system was set up. Tap water was used as the working fluid instead of the actual seawater and concentrate in SWRO desalination plants. Experimental results were obtained on the fluctuations of the pres

Major desalination processes consume a large amount of energy derived from oil and natural gas as heat and electricity. Solar desalination, although researched for over two decades, has only recently emerged as a promising renewable energy-powered technology for producing fresh water. Solar desalina

Reverse osmosis (RO) is increasingly used as a separation technique in chemical and environmental engineering where desalination, selective separation and wastewater treatment are well established examples. Treatment by RO reduces high levels of dissolved salts but has certain limitations when used

The paper presents a model of the synthesis process of taste dipeptides carried out in a biphase water–organic phase system. An enzymatic conversion takes place within the aqueous phase where the enzyme is dissolved. The catalysis process is accompanied by the transport of reagents from/to the organ

Eleven aromatic pesticides were used for a removal study using a 4040 spiral-wound polyamide nanofiltration (NF) membrane. The influences of molecular weight, molecular size (length and width), flux, and recovery were studied. The molecular weights of these pesticides are from 198 Da to 286 Da. Mole

A conventional coagulation and settlement method was used for the treatment of fine carbon-loaded wastewater from TV picture tube plants. The method is generally costly and a large amount of solid waste was created. The application of a vibration membrane to deal with this kind of wastewater has pro