Lead–Cobalt Composite for Water Remediation
Official patent title
Multicomponent nanocomposite material
Arabic title: مادة نانو مركبة متعددة المكونات
Invention
Invention
Problem
Mixed water pollutants may require both immobilization of inorganic species and degradation of organics. A treatment medium must demonstrate function without releasing hazardous constituent metals.
Why it matters
A multifunctional solid could support research on combined treatment steps, but lead and cobalt content makes leaching, worker exposure, and disposal central considerations.
Approach
The particulate composite combines carbon, orthorhombic PbO and Ca2PbO4, and cubic Co3O4 and is prepared through chelated solution-gel processing and calcination.
Who may benefit
Potential beneficiaries include environmental-material researchers, wastewater-treatment laboratories, inorganic-material manufacturers, remediation programs, and catalyst developers.
Potential value
The patent defines a lead–cobalt multicomponent composition, 75–85 nm crystallites, 350–450 nm grains, mixed particle morphology, a gel synthesis route, and two claimed pollutant-treatment uses.
Background
Background
Immobilization binds inorganic contaminants to a solid, while actinic irradiation may drive degradation of organic pollutants. Multiphase lead and cobalt oxides can provide adsorption or redox sites, but a treatment material containing hazardous metals must not become a new contamination source. Phase and particle characterization therefore need to be complemented by contaminant-specific capacity, degradation-product analysis, and stringent leaching tests. The patent proposes both treatment modes but the supplied evidence does not establish functional water-treatment performance.
Technology overview
Technology overview
The material contains 1–10 at.% C, 5–15 at.% Pb, 10–25 at.% Ca, and 10–20 at.% Co. XRD identifies orthorhombic PbO and Ca2PbO4 and cubic Co3O4, with 75–85 nm volume-average crystallites. SEM gives 350–450 nm average grains and describes spherical, flake-like, and agglomerated particles. Lead, calcium, and cobalt salts are combined with a chelator and polyol, dried at 200–400 °C, and calcined at 500–800 °C. Claims cover contaminant immobilization and irradiated organic degradation.
Potential applications
Potential applications
- Inorganic-contaminant immobilization research.
- Light-assisted organic-pollutant degradation.
- Multiphase environmental-material screening.
- Lead–cobalt oxide catalyst research.
Evidence-supported advantages
Evidence-supported advantages
- Combines several oxide and carbon phases.
- Defines elemental, crystallite, and grain-size ranges.
- Provides a solution-gel preparation route.
- Includes multiple particle morphologies.
- Claims two pollutant-treatment modes.
Development stage
Development stage
Laboratory synthesis and phase, elemental, crystallite, grain, and morphology characterization are described; pollutant performance, metal leaching, reuse, and commercialization were not established. The development stage was not independently verified.
Commercial opportunity
Commercial opportunity
The material would require unusually stringent environmental validation. Work should quantify pollutant capacity and kinetics, mineralization and by-products, lead and cobalt leaching across pH, ecotoxicity, recovery and reuse, hazardous-media disposal, worker exposure, real-water performance, batch reproducibility, calcination economics, and comparison with lower-hazard commercial alternatives.
Patent classifications
Patent classifications
WIPO IPC
- B01J23/835Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J21/18Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F101/10Treatment of water, wastewater, sewage or sludge
CPC
- B01J23/835Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F1/725Treatment of water, wastewater, sewage or sludge
- B01J21/18Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J23/14Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J23/75Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/39Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/393Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/394Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J37/0236Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J37/036Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J37/04Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J37/084Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J37/086Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J37/088Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F1/288Treatment of water, wastewater, sewage or sludge
- C02F1/32Treatment of water, wastewater, sewage or sludge
- C02F1/281Treatment of water, wastewater, sewage or sludge
- C02F2101/103Treatment of water, wastewater, sewage or sludge
- C02F2101/105Treatment of water, wastewater, sewage or sludge
- C02F2101/14Treatment of water, wastewater, sewage or sludge
- C02F2101/163Treatment of water, wastewater, sewage or sludge
- C02F2101/20Treatment of water, wastewater, sewage or sludge
- C02F2101/306Treatment of water, wastewater, sewage or sludge
- C02F2101/308Treatment of water, wastewater, sewage or sludge
- C02F2101/327Treatment of water, wastewater, sewage or sludge
- C02F2101/345Treatment of water, wastewater, sewage or sludge
- C02F2305/08Treatment of water, wastewater, sewage or sludge
- C02F2305/10Treatment of water, wastewater, sewage or sludge
Inventors
Inventors
- First inventorEhab Abdelhamed Abdelrahman Ahmed
- InventorMortaga Mohamed Mostafa Abou-Krisha
- InventorAbdulrahman Ghonaim Awad Alhamzani
Keywords
Keywords
- lead oxide
- calcium lead oxide
- cobalt oxide
- carbon nanocomposite
- pollutant immobilization
- photodegradation
- water treatment
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.