Patent ID: 9242213
Filing Date: 2016-01-26
CPC Classification: B01D,C02F,Y02A

Claim Text:
1. A forward osmosis system for water purification and desalination comprising: a rigid enclosure filled with feedwater; an array of bundles of hollow fiber tubes, each bundle having a multiplicity of hollow fiber tubes and each hollow fiber tube having a multiplicity of pores, each hollow fiber tube acting as a semi-permeable membrane submerged in the feedwater, the hollow fiber tubes permeated by the feedwater and each bundle securely attached to a bottom header and a top header; a draw solution consisting of pure water with a solution of superparamagnetic nanoparticles in suspension, the superparamagnetic nanoparticles having a diameter greater than the diameter of the pores in the hollow tubes; a common effluent collection header with an end attached to the top headers and another end attached to a collection means; and magnetic field generators oriented to keep the superparamagnetic nanoparticles in the draw solution within the array of bundles of hollow fiber tubes.