Research Abstracts

Crossflow and rotating membrane emulsification techniques were used for making oil-in-water (O/W) emulsions. The emulsions produced from a variety of oils and monomers (viscosity 7–528 mPas) exhibited narrow size distributions over a wide droplet size range, with the average droplet size ranging fro

In this paper, a two-step membrane treatment for acidic rinsing water is described including project idea, laboratory tests, pilot plant experiments and finally plant construction. The task is to recover metal and sulphuric acid from rinsing water originating from the electro-zinc coating line at Sa

Fouling of membranes in water treatment processes can be caused by the precipitation of inorganic salts, the accumulation of organic substances like polysaccharides, the deposition of organic and inorganic particles as well as the formation of microbial biofilms. The aim of this study was the reprod

Membrane-supported liquid–liquid extraction is known as an interesting alternative to conventional extraction. With this technology, both liquid phases do not have to be dispersed, formation of emulsions hardly takes place and phase separation is not necessary. In biotechnology, extraction by means

An emulsion liquid membrane process using tri-n-octylamine (Alamine 300) to extract and separate cobalt from the acidic leach solutions has been presented. Liquid membrane consists of a diluent, a surfactant (ECA 4360J), and an extractant (Alamine 300, Cognis Corp.). Ammonia solutions have been used

Relatively low and frequently changing flow rates and compositions in biohydrogen production require a highly efficient and low energy consuming gas cleaning technology to let this process become a competitive alternative in hydrogen production. Membrane contactors with non-porous polymeric membrane

Due to the likely toughening of environmental legislation in near future, many of the currently operating wastewater treatments are no longer acceptable and need to significantly increase their efficiency. Stricter regulations are found for especially sensitive areas, drinking water abstraction area

The chloride concentration of a hazardous leachate of approximately 22,000 mg/l is too high for the direct discharge requirement of less than 1000 mg/l into the municipal sewerage system. Electrodialysis (ED) was selected amongst various other alternative technologies for the desalination/concentrat

Scarcity of water is becoming an increasingly serious problem in many Asian countries. The situation is aggravated further by the pollution of fresh water resources due to the discharge of untreated wastewater from industrial enterprises and municipal wastewater. These problems have become worse sin

Adsorption-membrane hybrid systems present an interesting alternative for the treatment of contaminated waters. This study aims to understand the role of NOM on membrane performance and on removal of pharmaceuticals during the combined application of powdered activated carbon and submerged membranes