Borate–Oxide Composite for Water Adsorption
Official patent title
Calcium metaborate/lead tetroxide/magnesium borate/carbon nanocomposite and method of preparation
Arabic title: مركب نانوي من ميتابورات الكالسيوم/رباعي أكسيد الرصاص/بورات المغنيسيوم/الكربون وطريقة تحضيره
Invention
Invention
Problem
Multiphase materials can be difficult to prepare with controlled phases, dimensions, and integration, while water-treatment sorbents must capture pollutants without introducing new contaminants.
Why it matters
The disclosed material itself contains 7.5 to 15 atom % lead. Any water-contact use therefore requires high-priority independent assessment of lead leaching, particle containment, treated-water safety, worker exposure, waste classification, and disposal before practical consideration.
Approach
The disclosure forms a CaB2O4/Pb3O4/Mg3B2O6/C composite by a precursor-and-calcination route and contacts it with contaminated water to load organic pollutants or heavy metals onto the material.
Who may benefit
Potential beneficiaries are limited to controlled materials and environmental laboratories, sorbent-safety researchers, nanocomposite synthesis teams, and organizations capable of rigorous lead containment and hazardous-waste management.
Potential value
The publication combines four defined phases, elemental and morphological ranges, a preparation route, and pollutant-contact claims, but the lead-bearing composition creates a major safety and commercialization barrier.
Background
Background
Metal borates can contribute thermal stability and chemical resistance, metal oxides can add redox and surface activity, and carbon materials can provide conductivity and accessible area. Integrating these phases is difficult because synthesis routes may produce the wrong phases, poor bonding, agglomeration, or uncontrolled dimensions. The publication addresses phase integration through a solution-based precursor process followed by heating and calcination. It also proposes water-pollutant contact, which makes containment especially important because one of the designed phases is lead tetroxide.
Technology overview
Technology overview
The claimed composite contains orthorhombic CaB2O4, tetragonal Pb3O4, Mg3B2O6, and carbon. Its elemental ranges include 7.5 to 15 atom % lead, and its average crystallite size is 40 to 90 nm. Rod- and plate-shaped aggregates and several carbon nanomaterials are covered. Preparation mixes magnesium, calcium, lead, and boron sources with an alpha-hydroxy carboxylic acid and polyether, heats at 200 to 300° C., then calcines at 400 to 800° C. Separate claims state pollutant contact and 70 to 99.9% removal.
Potential applications
Potential applications
- Controlled laboratory adsorption studies for organic pollutants.
- Contained research on heavy-metal capture from water.
- Multiphase borate/oxide/carbon synthesis and characterization studies.
Evidence-supported advantages
Evidence-supported advantages
- Defines four material phases and detailed elemental ranges.
- Covers rod-shaped and plate-shaped aggregate morphologies.
- Provides a solution, heating, and calcination preparation sequence.
- Includes both organic-pollutant and heavy-metal contact claims.
Development stage
Development stage
The patent publication describes synthesis and states pollutant-removal ranges; commercialization was not established, and lead safety, reported performance, and development stage were not independently verified.
Commercial opportunity
Commercial opportunity
A water-treatment product case is highly constrained by the intentionally lead-bearing composition. No practical pathway should proceed without validated lead and particle containment, leach testing across realistic chemistry, hazardous-material controls, worker protection, recovery and disposal plans, and confirmation that treated water meets applicable safety requirements. Alternative non-lead uses also need functional testing.
Patent classifications
Patent classifications
WIPO IPC
- B01J20/06Chemical 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
CPC
- B01J20/06Chemical 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
- B01J20/28007Chemical 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
- B01J20/3028Chemical 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
- B01J20/3085Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- C02F1/288Treatment of water, wastewater, sewage or sludge
- C02F1/281Treatment of water, wastewater, sewage or sludge
- C02F2101/20Treatment of water, wastewater, sewage or sludge
- C02F2101/22Treatment 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
Inventors
Inventors
- First inventorEhab Abdelhamed Abdelrahman Ahmed
Keywords
Keywords
- CaB2O4
- Pb3O4
- Mg3B2O6
- carbon nanocomposite
- lead-containing sorbent
- water treatment
- pollutant removal
- calcination
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.