Nanocomposite for Heavy-Metal Water Treatment
Official patent title
Water decontamination using nanocomposite
Arabic title: إزالة تلوث المياه باستخدام مركب نانوي
Invention
Invention
Problem
Industrial wastewater can contain persistent heavy-metal ions and organic dyes, while established removal methods may involve high operating costs, complex processing, secondary waste, or limited performance at elevated contaminant concentrations.
Why it matters
An adsorbent that addresses both metal ions and dyes could broaden water-treatment options, but removal capacity, selectivity, regeneration, leaching, treated-water safety, and full-scale performance require independent verification.
Approach
The method contacts contaminated water with a g-C3N4/V2O5/MgAl2O4 nanocomposite to adsorb heavy-metal ions and an optional organic dye, then removes the contaminant-bearing composite from the water.
Who may benefit
Potential beneficiaries include industrial-water treatment developers, environmental laboratories, adsorbent manufacturers, mining and metal-finishing facilities, textile wastewater operators, and researchers studying hybrid carbon-nitride materials.
Potential value
The disclosure provides one contact-and-separation method for a defined porous three-phase nanocomposite and identifies a broad set of metal ions plus dye-containing organic pollutants as treatment targets.
Background
Background
Cadmium, chromium, copper, iron, lead, nickel, silver, zinc, and uranium may enter water from chemical, textile, leather, plastics, mining, battery, pigment, and pulp operations. Heavy metals do not biodegrade and can accumulate in organisms. Ion exchange, precipitation, coagulation, membranes, reverse osmosis, and adsorption are available, but the disclosure notes cost, process complexity, secondary waste, and performance limitations. Graphitic carbon nitride is attractive for adsorption but has limited surface area and can aggregate without structural modification.
Technology overview
Technology overview
Contaminated water is contacted with a nanocomposite containing graphitic C3N4, V2O5, and MgAl2O4 in a claimed mass relationship of 5–15:2–7:75–95. The material adsorbs ions of Cd, Cr, Cu, Fe, Pb, Ni, Ag, Zn, or U and may also adsorb a dye such as an indolinone-sulfonate compound. The loaded material is then separated from the water. The patent further defines BET area, BJH pore dimensions, spinel spacings, phase-related XRD peaks, and limits on selected non-target constituents.
Potential applications
Potential applications
- Potential adsorption treatment for heavy-metal-bearing industrial wastewater.
- Potential polishing step for water containing mixed metal ions.
- Potential removal studies for indigo-carmine-type organic dyes.
- Potential reusable sorbent development after regeneration testing.
Evidence-supported advantages
Evidence-supported advantages
- Targets multiple listed heavy-metal ions with one composite.
- Also encompasses adsorption of an organic dye.
- Defines the three constituent phases and their mass relationship.
- Provides pore and diffraction criteria for material characterization.
Development stage
Development stage
Patent publication with a described adsorption method and material characterization; independent validation and commercialization were not established.
Commercial opportunity
Commercial opportunity
The method may interest industrial-water and specialty-adsorbent developers. Deployment requires independent isotherm and kinetic data, realistic mixed-stream trials, selectivity, sorbent dosage, regeneration cycles, pressure-drop or separation design, metal and vanadium leaching, spent-media disposal or recovery, treated-water quality, process economics, and compliance with applicable discharge or reuse requirements.
Patent classifications
Patent classifications
WIPO IPC
- C02F1/28Treatment of water, wastewater, sewage or sludge
- B01J20/08Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F101/20Treatment of water, wastewater, sewage or sludge
CPC
- C02F1/288Treatment of water, wastewater, sewage or sludge
- 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
- B01J20/3078Chemical 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
- B01J20/28059Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/20Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J20/2809Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F1/283Treatment of water, wastewater, sewage or sludge
- B01J20/2808Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F2101/308Treatment of water, wastewater, sewage or sludge
- C02F2101/34Treatment of water, wastewater, sewage or sludge
- C02F2101/38Treatment of water, wastewater, sewage or sludge
- C02F2101/20Treatment of water, wastewater, sewage or sludge
- C02F2101/103Treatment of water, wastewater, sewage or sludge
- C02F2101/40Treatment of water, wastewater, sewage or sludge
- C02F2305/08Treatment of water, wastewater, sewage or sludge
- C02F1/281Treatment of water, wastewater, sewage or sludge
Inventors
Inventors
- First inventorMohamed Khairy Abdel Fattah Omran
- InventorBabiker Yagoub Elhadi Abdulkhair
Keywords
Keywords
- water decontamination
- adsorption
- heavy metals
- organic dye
- g-C3N4
- V2O5
- MgAl2O4
- nanocomposite
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.