Multi-functionalized basic immobilized amine sorbents for removal of metal contaminants from wastewater
Abstract
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 H2O 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 (—NH2, —NH, —N) from the polymeric network while additional metal capture capacity is derived from the introduction of a secondary silane linker.
- Inventors:
- Issue Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 2294033
- Patent Number(s):
- 11850571
- Application Number:
- 16/933,743
- Assignee:
- United States Department of Energy (Washington, DC)
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 07/20/2020
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Gray, McMahan L., Kail, Brian W., Wilfong, Walter Christopher, Wang, Qiuming, and Shi, Fan. Multi-functionalized basic immobilized amine sorbents for removal of metal contaminants from wastewater. United States: N. p., 2023.
Web.
Gray, McMahan L., Kail, Brian W., Wilfong, Walter Christopher, Wang, Qiuming, & Shi, Fan. Multi-functionalized basic immobilized amine sorbents for removal of metal contaminants from wastewater. United States.
Gray, McMahan L., Kail, Brian W., Wilfong, Walter Christopher, Wang, Qiuming, and Shi, Fan. Tue .
"Multi-functionalized basic immobilized amine sorbents for removal of metal contaminants from wastewater". United States. https://www.osti.gov/servlets/purl/2294033.
@article{osti_2294033,
title = {Multi-functionalized basic immobilized amine sorbents for removal of metal contaminants from wastewater},
author = {Gray, McMahan L. and Kail, Brian W. and Wilfong, Walter Christopher and Wang, Qiuming and Shi, Fan},
abstractNote = {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 H2O 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 (—NH2, —NH, —N) from the polymeric network while additional metal capture capacity is derived from the introduction of a secondary silane linker.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {12}
}
Works referenced in this record:
Stable Immobilized Amine Sorbents for REE and Heavy Metal Recovery from Liquid Sources
patent-application, April 2018
- Gray, McMahan L.; Kail, Brian W.; Wilfong, Walter C.
- US Patent Application 15/782315; 20180100065
Regenerable immobilized aminosilane sorbents for carbon dioxide capture applications
patent, September 2014
- Gay, McMahan; Choi, Sunho; Jones, Christopher W.
- US Patent Document 8,834,822