Microfiltration

Membrane fouling by flocculated particulate mixtures formed by silica (SiO2) and alumina (Al2O3) was studied. The properties of the particulate mixtures formed depended on the properties of the solutions. The effect of floc properties and temperature on the apparent critical flux was studied by flux

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

Cross-flow microfiltration alone or associated with ultrafiltration or coagulation was conducted to investigate the efficiency of this process in the reducing of chemical oxygen demand (COD) and proteins (Npr) in the waste waters produced from cuttlefish conditioning and freezing process. The study

This research focused on the filtration performance of a membrane-coupled fermenter system for dissolved organics recovery from liquid organic sludge. Over the range 0.1–5 µm, the magnitude of total membrane resistance (Rt) is ranged as follows in the order: 0.1 µm>0.2 µm>0.5 µm>1 µm>2 µm>5 µm. The

A pilot study for reclamation of secondary treated sewage effluent in Singapore was conducted using a MF/RO system with the capacity of 20 m3/d. A 0.1 µm MF membrane from Asahi and RE-4040-FL RO membrane from Saehan were used in this study. The pilot plant consists of six spiral-wound RO elements. T

Arsenic contamination of drinking water is a concern in many parts of the world. In the United States, the Environmental Protection Agency recently reduced the maximum contaminant level of arsenic in drinking water from 50 to 10 µg/L (ppb). In Bangladesh the arsenic concentration in drinking water c

The main problem in treating oil in water emulsions by membrane technologies is fouling caused by oil adsorption on the membrane surface. Among these technologies, microfiltration has been used in many fields of oil–water emulsions. The effect of operating conditions on a microfilter (home made) wit

Supports for microfiltration and ultrafiltration were prepared with Tunisian silty marls. Plastic pastes were prepared from a ceramic powder of silty marls mixed with organic additives and water. The pastes could be extruded to elaborate a porous tubular configuration. The supports fired at 1190°C a

Crossflow microfiltration experiments were performed on aqueous dispersions of titanium dioxide through a 0.1 µm pore size ceramic membrane at various operating parameters. The initial transient flux decline follows dead-end filtration theory, with the membrane resistance determined from the initial

The influence of particle shape, ζ-potential and size with change of pH and ionic strength on permeate flux during the microfiltration of model dispersions (two different china clays with mean particle sizes of 3.5 µm and 1.5 µm) on flat sheet ceramic membranes (ZrO2, mean size of pores 0.2 µm) have