Reverse osmosis

Fouling of membranes by colloidal organic and inorganic particles continues to be documented as the most common and challenging obstacle in attaining stable continuous operation of reverse osmosis (RO) and ultrafiltration (UF) systems. Much current research is being conducted on physical parameters

The paper describes the work carried out in the development of a small wind-powered desalination plant. An alternative control system was studied to serve as a direct interphase between a reverse osmosis desalination plant and a small wind energy conversion system. The main purpose was to reduce or

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

A brackish water desalination plant in California that incorporates RO, NF, and EDR units was analyzed thermodynamically using actual plant operation data. Exergy flow rates were evaluated throughout the plant, and the exergy flow diagrams were prepared. The rates of exergy destruction and their per

The separation of formic (C1), acetic (C2), propionic (C3), and n-valeric (C5) acids in binary water solutions has been studied using a reverse osmosis (RO) membrane pilot plant operating at different temperatures and pressures (usually 21°C and 1.72 MPa). The RO membrane, which is composite, polyam

Separation of ions from aqueous solutions was performed by reverse osmosis (RO) on an "-alumina-supported MFI-type zeolite membrane synthesized by in-situ crystallization. For the 0.1 M chloride single-salt solutions, the separation efficiency in terms of ion rejection was found to increase with the

Excess fluoride in drinking water is harmful for human health, so it is necessary to be removed. In this study the potential of a reverse osmosis (RO) membrane for defluoridation of underground water samples at different solute concentrations was studied. Because of the variation in feed water compo

Filtration performance and fouling of nanofiltration (NF) and reverse osmosis (RO) membranes in the treatment of dairy industry wastewater were investigated. Two series of experiments were performed. The first one involved a NF membrane (TFC-S) for treating the chemical–biological treatment plant ef

Rotating reverse osmosis (RO), which is based on Taylor-Couette flow, offers a means to minimize flux decline due to concentration polarization and membrane fouling. However, the operating conditions play a significant role in determining the effectiveness of the system. In this study, the effect of

The Seawater Desalination by an Autonomous Wind Energy System (SDAWES) project was developed to produce a natural scarce resource (fresh water) by the use of a natural, renewable resource (wind energy). The basic concept consists in the connection of three kinds of desalination systems: reverse osmo