US 2026/0091998 A1 · H2S SEQUESTERING COMPOSITION

Abstract

The present development refers to a H2S sequestrant composition in wastewater comprising°aminoorganoalkoxysilane-functionalized°particles, aminoorganoalkoxysilane-functionalized thickening agents, an adsorption promoter, and a polar solvent. In particular, the developed composition allows the removal of H2S present in wastewater due to the combined reaction of the amino groups on the particles and the aminoorganoalkoxysilane-functionalized thickening agents and the H2S that, in the presence of the absorption promoter, allows the production of ammonium hydrogen sulfide (NH4SH). In addition, the sequestrant composition of the present development maintains the H2S species captured without further release into the atmosphere.

Claims9

Dependent claims

An H2S sequestrant composition comprising:

aminoorganoalkoxysilane-functionalized particles between 1 ppm and 20000 ppm;
aminoorganoalkoxysilane-functionalized thickening agent between 0.01% w/w and 3% w/w;
adsorption promoter between 0.01% w/w and 8% w/w;
and
polar solvent.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

19/111,639Filed 13 Sep 2023

Priority

CO NC2022/001319915 Sep 2022

Published

2 Apr 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification24 codes

C02F 1/683
By addition of specified substances, e.g. trace elements, for ameliorating potable water: by addition of complex-forming compounds
B01D 53/02
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g.…: by…
B01D 53/14
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g.…: by…
B01J 20/103
Comprising silica or silicate: comprising silica

H2s sequestering composition

Life of this patent

H2s sequestering composition

Life of this patent

Abstract

Claims9