REVERSE OSMOSIS MEMBRANE

What is the membrane that selectively allows certain species to pass through called?

• Permeable membrane

• Semi-permeable membrane

• Impermeable membrane

• Membrane

'In RO, the solvent passes through the membrane at a much faster rate than the dissolved solids'

• True

• False

Which of the following membrane is used in the osmosis process?

• Impermeable membrane

• Semi-permeable membrane

• Permeable membrane

• Non-porous membrane

The _________ the salt rejection, the better the reverse osmosis system is performing

Concentrated seawater is called as

• Permeate

• Brine

• RO water

• Salt water

In RO, pressure that is greater than the naturally occurring osmotic pressure is applied in order to _____________

• Mineralize water

• Desalinate water

• Decompose water

• Push bacteria across membrane

The amount of pressure to be applied in RO system is depends on ________

• Organic content

• Salt concentration

• Bacteria

• Membrane strenghth

__________ is a process whereby a particle or a solution is deposited on a membrane surface or in a membrane pores which may decreased the reverse osmosis performance.

Operating conditions also affect fouling of the membrane

• True

• False

Which of these do not cause scaling of the membranes?

• Organic and inorganic colloids

• Calcium sulphate

• Silica

• Calcium carbonate