General Electric Company

Ionics, Inc.

Other

Bl Technologies, Inc.

Ge Infrastructure, Water & Process Technologies

Lawrence Charles Costa

Steven John Harrold

Hua Wang

Joseph Anthony Suriano

Su Lu

David Olson

Babu Narayanswamy

Xingpeng Zhang

Gary William Yeager

Hua Li

Chen Xiao Wang

Wenqing Peng

Steven Thomas Rice

Bing Zhang

Zhen Yu Liu

Michael Todd Luttrell

Yun Peng

Linglu Yang

Patrick J McCabe

Peng Wang

Jiang Ji

David Allen Olson

The disclosure of the present invention relates to a method for preparing membrane and associated membrane and filter element. The method comprises providing a porous substrate having a plurality of pores; and applying a pre-filler solution to at least partially occupy the pores in the porous substrate. The membrane comprises a porous substrate and a filter layer formed on the porous substrate. The filter element comprises a core tube; and a membrane as prepared and rolled around the core tube.

Method for preparing membrane and associated membrane and filter element

The present disclosure describes an additive that may be used in the manufacture of thin-film polyamide composite membranes. Thin-film polyamide composite membranes are used in filtration processes, such as reverse osmosis and nanofiltration. The additive may be an amino-siloxane compound. The amino-siloxane compound includes repeated groups of silicon bonded to oxygen with at least one amine functional group. Optionally, the amino-siloxane compound may also include a hydrophilic group. The additive reacts with an aqueous phase and an organic phase to form a thin polyamide film on a porous substrate.

Flux enhancing agent for improving composite polyamide reverse osmosis membrane performance

Improved methods for reducing boron concentration in seawater or brackish water, while simultaneously maintaining or improving the salt rejection of membrane and flow performance of polyamide reverse osmosis (RO) membranes include contacting the water with a composite membrane comprising moieties derived from an aromatic sulfonyl halide, a heteroaromatic sulfonyl halide, a sulfinyl halide; a sulfenyl halide; a sulfuryl halide; a phosphoryl halide; a phosphonyl halide; a phosphinyl halide; a thiophosphoryl halide; a thiophosphonyl halide, an isocyanate, a urea, a cyanate, an aromatic carbonyl halide, an epoxide or a mixture thereof.

Reverse osmosis composite membranes for boron removal

The present invention provides a composite membrane comprising a porous base membrane and a polyamide coating disposed on said porous base membrane, said polyamide coating comprising a C-Ccyclic carbonyl compound and a C-Camide compound, said amide compound comprising at least one N&#x2014;H moiety. In addition the present invention provides a method of preparing a composite membrane comprising contacting under interfacial polymerization conditions an organic solution comprising a polyacid halide with an aqueous solution comprising a polyamine, said contacting being carried out on a surface of a porous base membrane, said organic solution further comprising a C-Ccyclic carbonyl compound, said aqueous solution comprising a C-Camide compound, said amide compound comprising at least one N&#x2014;H moiety.

Method of making composite membrane

Processes and apparatus are disclosed for producing clear reverse osmosis retentates having silica concentrations which are substantially supersaturated in silica from feedwaters having silica concentrations, without substantial formation of alkali-soluble scale having substantial silica content in the associated reverse osmosis apparatus, by adjusting the pH of such feedwaters to an acidic pH range prior to reverse osmosis in accordance with this invention. Also disclosed are related processes and apparatus for periodically removing minor amounts of alkali-soluble scale having substantial silica content from the apparatus.

High recovery reverse osmosis process and apparatus

The invention pertains to the polymerization of molecules having electrophilic and nucleophilic substituents on the same or different molecules, such polymerization mediated by aminopyridine catalysts which are substantially regenerated during polymerization. The invention also pertains to polymer products of such polymerization, to permselective membranes containing such polymers, and to processes and apparatus for separating fluids.

Catalyst mediated method of interfacial polymerization on a microporous

Asymmetric, semipermeable membranes cast from a solution comprised of poly(aryletherketone) dissolved in a strongly protic non-reactive acid.

Asymmetric semipermeable poly(aryletherketone) membranes and method of

Growing community of inventors

Mansfield, MA, United States of America

Lawrence Charles Costa