Patent · US Active

Method of removing boric acid from an aqueous solution

US11224855B2 · kind B2 · utility

0Cited by

17References

2Claims

0Family size

Assignee

Singapore University of Technology and Design · SG

Inventors

Fuming Chen · Fuzhou, CN
Hui YANG · Singapore, SG

Key dates

Filing date	Mar 30, 2021
Grant date	Jan 18, 2022
Priority date	—
Expiry date	Mar 30, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F2303/16
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention generally relates to a carbon-based boron removal medium with hydroxyl group and amine group, and in particular, to a method for forming the carbon-based boron removal medium. In various embodiments, nitrogen-doped (“N-doped”) graphene oxide is synthesized by a simple two-step process: (1) oxidation of graphite to graphene oxide, and (2) nitrogen-doping (“N-doping”) the graphene oxide to form the amine group. The resultant N-doped graphene oxide can efficiently remove boron from aqueous solutions. The invention also generally relates to a boron sensing medium and its use in conductometric measurement techniques to detect and measure the amount of boron present in aqueous solutions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.