Research Abstracts

Slow sand filtration is a biological means of surface water clarification that involves both biological and physical mechanisms. During this process, as time progresses, microbiological growth occurs, mainly consisting of micro-algae and bacteria which form a fixed microbial ecosystem (biofilm) on t

The removal of fluoride from diluted solution with Neosepta AHA anion exchange membrane has been studied by Donnan dialysis. The effects of concentration, pH, and accompanying anion on feed phase and receiving phase composition were investigated. Neosepta AHA anion exchange membrane was used for the

The production of demineralised water from drinking water by nanofiltration/membrane distillation system (NF/MD) has been investigated. The precipitation of CaCO3 on the membrane surface and a rapid flux decline was observed when tap water was used directly as a feed. The problem of scaling was elim

The desalination market has been continuously growing to augment conventional water resources in arid and semi-arid regions that are experiencing population growth, improvements in life-style, increased economic activity and increased contamination of existing water supplies. The introduction of des

The surface properties of both suspensions and membranes vary with solution environments in the microfiltration of mineral particulate suspensions using ceramic membranes. It remained uncertain which one might be more important in determining the filtration flux. In this paper the influences of pH a

The direct contact membrane distillation (DCMD) process was applied for water desalination. The main objective was to study the heat and mass transfer of the process. The experiments were performed on a DCMD unit using a flatsheet PVDF membrane with a pore size of 0.22 µm. Feed solutions were aqueou

The wastewaters generated by the cuttlefish processing contain a high organic (COD of 20,000–35,000 mg.L−1) and inorganic (TDS of 30–40 g.L−1) load. These seafood effluents were subjected to treatment with cellulose acetate (CA) membranes synthesised according to the phase inversion process. Two pre

A novel stainless steel membrane module with a 0.2 µm nominal pore diameter was applied in an aerated submerged membrane bioreactor to treat synthetic domestic sewage. The pore size of metal membrane was more homogeneous and of tighter distribution than that of organic membrane. The steady membrane