Iron-Oxide Spinel for Dye Removal
Official patent title
Nanocomposite for water decontamination
Arabic title: مركب نانوي لإزالة تلوث المياه
Invention
Invention
Problem
Dyes and other organic pollutants in water require removal methods that can capture dissolved contaminants without relying on added peroxide or ozone.
Why it matters
Removing persistent colorants can support water-treatment research and reduce pollutant loads before discharge or further polishing, provided that the adsorbent is safe and recoverable.
Approach
The method contacts dye-contaminated water with a g-C3N4/Fe2O3/MgAl2O4 nanocomposite, separates the pollutant-bearing material, and targets at least a 2 wt. % reduction in the organic-pollutant concentration.
Who may benefit
Potential beneficiaries include water-treatment researchers, adsorbent developers, dye-using manufacturers, environmental laboratories, and advanced-material producers.
Potential value
The material combines carbon nitride, iron oxide, and magnesium aluminate in a defined porous composite intended to adsorb dye molecules and then be removed from the treated water.
Background
Background
Dye-bearing effluents can retain color and organic load after conventional treatment. Adsorption offers a separation route in which a porous solid concentrates dissolved molecules for later removal, but practical value depends on capacity, selectivity, contact time, regeneration, and secondary contamination. Multiphase nanocomposites can combine surface chemistry with structural stability. This disclosure focuses on a graphitic-carbon-nitride, iron-oxide, and magnesium-aluminate material for dye adsorption; it does not establish full treatment-train performance or adsorbent lifecycle economics.
Technology overview
Technology overview
The nanocomposite contains g-C3N4, Fe2O3, and MgAl2O4 in a 5–15:2–7:75–95 mass relationship. Claim 1 requires removal of an adsorbed dye material and at least 2 wt. % reduction of the organic pollutant. The abstract and summary instead refer to reducing a heavy metal at that step, and the summary calls the pore distribution unimodal while claim 2 calls it bimodal. Claimed properties include 15–45 m²/g BET area, bimodal pore diameters of 6.3–10.03 nm and 7.5–13 nm, and 0.06–0.12 cm³/g pore volume. Claim 5 specifies 0.01–0.2 parts of indolinone-sulfonate-containing molecules per part of nanocomposite.
Potential applications
Potential applications
- Dye-contaminated water-treatment research.
- Indigo-carmine adsorption studies.
- Porous adsorbent-material development.
- Industrial wastewater polishing evaluations.
Evidence-supported advantages
Evidence-supported advantages
- Uses a separable heterogeneous adsorbent.
- Operates without claimed peroxide or ozone addition.
- Defines composition and bimodal porosity ranges.
- Targets dye capture through adsorption.
- Provides crystallographic limits for material identification.
Development stage
Development stage
A characterized material and a claimed dye-adsorption method are described; regeneration, real-effluent validation, and commercialization were not established. The development stage was not independently verified.
Commercial opportunity
Commercial opportunity
The composite could be screened for specialty dye-removal cartridges or polishing media. Commercial evaluation requires pollutant-specific capacity and kinetics, repeated regeneration, iron and magnesium leaching tests, pressure-drop data, disposal or recovery pathways, performance in real wastewater, manufacturing consistency, and cost comparison with established adsorbents.
Patent classifications
Patent classifications
WIPO IPC
- C02F1/28Treatment of water, wastewater, sewage or sludge
- B01J20/04Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/28Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F101/20Treatment of water, wastewater, sewage or sludge
- C02F101/30Treatment of water, wastewater, sewage or sludge
CPC
- C02F1/281Treatment of water, wastewater, sewage or sludge
- B01J20/041Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/28059Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/28071Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/28083Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J2220/42Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F2101/20Treatment of water, wastewater, sewage or sludge
- C02F2101/308Treatment of water, wastewater, sewage or sludge
Inventors
Inventors
- First inventorMohamed Khairy Abdel Fattah Omran
- InventorBabiker Yagoub Elhadi Abdulkhair
Keywords
Keywords
- water decontamination
- dye adsorption
- graphitic carbon nitride
- iron oxide
- magnesium aluminate
- bimodal porosity
- indigo carmine
Patent document and drawings
Patent document and drawings
The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.