Flow-Through Nanocomposite for Dye Removal
Official patent title
Nanocomposite for purification of contaminated water
Arabic title: مركب نانوي لتنقية المياه الملوثة
Invention
Invention
Problem
Industrial wastewater can contain persistent dyes and other pollutants, while some adsorbents have limited capacity, reusability, pore consistency, or scalable synthesis.
Why it matters
A defined porous adsorbent with measurable dye capacity could support development of water-polishing processes, provided particle containment and treated-water safety are demonstrated.
Approach
The method contacts polluted water with a g-C3N4@CuO/MgAl2O4 nanocomposite whose oxide nanoparticles are dispersed on carbon-nitride nanosheets, adsorbs pollutants, and optionally collects a cleaner filtrate.
Who may benefit
Potential beneficiaries include industrial-water companies, dye and textile processors, adsorbent manufacturers, environmental-materials researchers, and filtration-equipment developers.
Potential value
The patent combines a compositionally defined mixed-oxide/carbon-nitride adsorbent, measured indigo-carmine capacity, nanosheet-supported particles, and a flow-through filtration embodiment.
Background
Background
Industrial wastewater can contain dyes, pesticides, pharmaceuticals, plasticizers, and metal ions. Adsorption offers a direct way to separate contaminants, but adsorbents can lose capacity or stability and may be difficult to reuse. Nanocomposites provide adjustable surface area, phase composition, and pore structure, although their synthesis can require high temperatures and yield inconsistent materials. The patent prepares a composite of graphite-phase carbon nitride, CuO, and MgAl2O4, characterizes its nanosheets, particles, phases, and pores, and evaluates indigo-carmine adsorption under defined contact times.
Technology overview
Technology overview
The material contains 5–15 wt.% g-C3N4, 3–7 wt.% CuO, and 80–90 wt.% MgAl2O4. CuO and MgAl2O4 particles of 2–10 nm are dispersed on g-C3N4 nanosheets 100–500 nm long and 50–250 nm wide. BET area is 15–30 m2/g, pore diameter 5–10 nm, and pore volume 0.01–0.2 cm3/g. Synthesis uses magnesium, aluminum, and copper salts with menthol fuel, calcination at 600–800 °C, then urea treatment at 550–650 °C. Claimed indigo-carmine capacity is 70–80 mg/g after 90–150 minutes.
Potential applications
Potential applications
- Potential use in adsorption studies for dye-containing industrial wastewater.
- Potential use as a polishing medium for indigo-carmine removal.
- Potential use in flow-through nanocomposite filtration research.
- Potential use as a platform for mixed-oxide adsorbent optimization.
Evidence-supported advantages
Evidence-supported advantages
- Defines the weight fractions of all three principal material components.
- Disperses 2–10 nm oxide particles on larger g-C3N4 nanosheets.
- Provides BET area, pore diameter, pore volume, and phase information.
- Reports a narrow indigo-carmine adsorption-capacity range and a flow-through option.
Development stage
Development stage
Patent publication with reported nanocomposite synthesis, characterization, and dye-adsorption measurements; pilot treatment, water-safety validation, scale-up, and commercialization were not established.
Commercial opportunity
Commercial opportunity
The material may support licensing or pilot studies with industrial-water and adsorbent companies. Development should test real wastewater, competing ions and organics, continuous flow, pressure drop, regeneration and reuse, copper and particle leaching, treated-water toxicity, media containment, sludge disposal, synthesis energy, batch consistency, scale-up, and discharge compliance.
Patent classifications
Patent classifications
WIPO IPC
- B01J20/08Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/02Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F101/30Treatment of water, wastewater, sewage or sludge
CPC
- C02F1/283Treatment of water, wastewater, sewage or sludge
- B01J20/20Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/06Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/0259Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/08Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/205Chemical 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
- B01J20/28059Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/28016Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/28095Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F1/288Treatment of water, wastewater, sewage or sludge
- B01J20/3078Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/28007Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F1/281Treatment of water, wastewater, sewage or sludge
- C02F2305/08Treatment of water, wastewater, sewage or sludge
- C02F2101/308Treatment of water, wastewater, sewage or sludge
Inventors
Inventors
- First inventorBabiker Yagoub Elhadi Abdulkhair
- InventorMohamed Khairy Abdel Fattah Omran
Keywords
Keywords
- g-C3N4
- CuO
- MgAl2O4
- nanocomposite
- water purification
- adsorption
- indigo carmine
- porous material
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.