Nanoteknologi Proses - Membran

What is the main function of a membrane in a separation process?

• As a reactive component

• As a selective barrier

• As a cooler

• As a pressure pump

What is the driving force in the reverse osmosis process?

• Concentration difference

• Electric voltage difference

• Pressure difference

• Temperature difference

The correct order of pore size from MF to RO is...

• MF > UF > NF > RO

• RO > NF > UF > MF

• UF > MF > RO > NF

• RO > UF > MF > NF

Pervaporation is primarily used for...

• Seawater desalination

• Solvent and water separation

• Protein filtration

• Coarse particle filtering

The separation process in reverse osmosis is based on the principle of...

• Sieving

• Adsorption

• Solution-diffusion

• Coagulation

A Mixed-Matrix Membrane (MMM) consists of...

• Metal and water

• Polymer with solid (inorganic) fillers

• Resin and dyes

• Electrolytes and salts

The membrane fabrication method using particle radiation is...

• Sintering

• Track-etching

• Phase inversion

• Template-leaching

Zeolite membranes can be fabricated through...

• Sputtering

• In-situ crystallization

• Track etching

• CVD

Pyrolysis of polymer precursors produces...

• Cellulose membranes

• Carbon membranes

• Inorganic membranes

• Liquid membranes

What is a weakness of MMM related to polymer-filler interface?

• Too high permeability

• Interfacial voids

• Excessive hydrophilicity

• Low crystallinity