Fan Yang Shi, 37100 Christopher Columbus Dr UNIT 1016, Jersey City, NJ 07302

2022034, Nov 3, 2022

Apr 30, 2021

17/245092

- Washington DC, US
FAN SHI - Pittsburgh PA, US
SHOULIANG YI - Pittsburgh PA, US
WALTER CHRIS WILFONG - Clinton PA, US
QIUMING WANG - Bridgeville PA, US

B01J 20/26
B01J 20/30
B01J 20/10
B01J 20/28
B01D 53/62
B01D 53/81

One or more embodiments relates to method for generating CHEFS having the steps of generating the CHEFS from a dope. One or more embodiments relates to a method for generating CHEFS having amine functional groups having the steps of generating a dope containing a BIAS with amine groups, at least one polymer, and at least one solvent; and forming CHEFS from the dope, wherein the generated CHEFS have no more than 30% amine loss compared to the BIAS.

2021001, Jan 21, 2021

Jul 20, 2020

16/933743

- Washington DE, US
Brian W. Kail - Pittsburgh PA, US
Walter Christopher Wilfong - Clinton PA, US
Qiuming Wang - Bridgeville PA, US
Fan Shi - Pittsburgh PA, US

B01J 20/26
B01J 20/10
B01J 20/32
C02F 1/28
B01D 15/08

This disclosure provides polyamine sorbent compositions for the separation of metals from aqueous solutions. The polyamine sorbent compositions comprise a silica support, an aminosilane bound to the silica support, an epoxysilane bound to the silica support, and a polyamine where the polyamine is chemically tethered onto a solid silica support through via the epoxysilane. The polyamine may be further stabilized within the bulk sorbent through hydrogen bonding interactions with the aminosilane. The sorbent compositions resist leaching by HO in an aqueous stream containing heavy oxyanion-based (and other) metals and demonstrate stability over a pH range of 2-14. The sorbent compositions are useful for the separation of metals from aqueous solutions. The cationic heavy metals are captured by the co-existing amine groups (—NH, —NH, —N) from the polymeric network while additional metal capture capacity is derived from the introduction of a secondary silane linker.

2021001, Jan 21, 2021

Jul 17, 2020

16/931987

- Washington DC, US
McMahan L. Gray - Pittsburgh PA, US
Walter C. Wilfong - Clinton PA, US
Qiuming Wang - South Park PA, US
Fan Shi - Pittsburgh PA, US

C02F 1/28
B01J 20/26

One or more embodiments relate to a method of separating a target contaminant from an aqueous source by contacting a polyamine network-based sorbent with the aqueous source; and capturing and separating the target contaminant from the aqueous source.