Mitigation of Silica Scaling by Closed-Circuit Reverse Osmosis

Reverse osmosis (RO) is considered the most reliable and cost-effective membrane desalination technologyworldwide. However, it suffers significant performance limitations due to mainly inorganic foulinggenerated in the highly concentrated brine. Especially, scaling caused by silica and silicates depositionsresults in irreversible damages with...

Silica Scaling in Closed-Circuit Desalination (CCD)

With the growing population and industrial development, there is more stress on natural water resources. Additionally, environmental laws make the disposal of waste streams from industries difficult. In this scenario, it is crucial to treat waste streams to recover water and possibly minerals, for reuse in the industry, reducing the dependency...

Lab-Scale Nano-Filtration Membrane Performance With High Silica Concentration Feed Water

Water scarcity emphasizes the necessity of water recovery from saline sources, which are plentifully available. Nanofiltration (NF) is widely implemented in water reclamation treatment particularly in industrial field. However, the presence of silica hinders the possibility of obtaining a high recovery in a NF membrane system. In this work, the...

High silica concentration in RO concentrate and Magnesiumsilica polymers formation

Scaling is a major barrier in increasing recovery of RO installations. One of the major unresolved scaling problems in RO is silica scaling. Depending on pH and temperature, the safe operation practice to prevent silica scaling is to keep silica concentration below 150 [mg/l] in the concentrate. In this study, it was investigated whether it is...