Carbonate Apatite Production from Calcined Bone
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Solution Overview
Problem
There is a lack of efficient methods for producing carbonate apatite from natural materials like bone, which is necessary for applications such as metal adsorbents and artificial bones, due to high production costs and limited synthesis techniques.
Innovation Solution
A method involving the calcination of livestock bone at high pressure and subsequent reaction with a basic carbonate compound to introduce carbonate groups into the apatite structure, resulting in a high carbonate introduction efficiency and cost-effective production of carbonate apatite.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional synthesis methods using CaHPO4·2H2 and CaCO3 with sintering at not less than 500°C are employed, then carbonate apatite can be produced, but the production cost becomes high
Solution Approach 1:
The invention replaces expensive conventional raw materials (CaHPO4·2H2 and CaCO3) with inexpensive natural bone material that can be disposed of after extraction. Bone is a readily available, low-cost waste product from food processing that serves as an effective substitute for costly chemical reagents, thereby dramatically reducing production costs while maintaining product quality
Solution Approach 2:
The invention fundamentally changes the synthesis parameters by eliminating high-temperature sintering (≥500°C) and replacing it with a low-temperature chemical treatment process using basic carbonate compounds at moderate temperatures. This parameter change transforms an energy-intensive, costly process into a mild, cost-effective procedure while achieving the desired carbonate apatite product
2Ease of manufacture
If natural bone is used as raw material, then production cost is reduced, but efficient production method was not previously known
Solution Approach 1:
The invention applies preliminary calcination treatment to bone at 100-200°C to remove organic components and prepare the bone matrix for subsequent carbonate introduction. This preliminary preparation step ensures that the bone structure is optimized for efficient carbonate uptake, thereby achieving high production efficiency when using inexpensive natural bone material
Solution Approach 2:
The invention introduces basic carbonate compounds (such as Na2CO3, K2CO3, CaCO3) as intermediary reagents that facilitate the transformation of bone into carbonate apatite. These intermediaries enable efficient carbonate introduction into the bone matrix at low temperatures, making the overall process both cost-effective and highly efficient
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables the efficient and inexpensive production of carbonate apatite with high carbonate-group introduction rates, suitable for applications like heavy metal adsorption and as a material for artificial bones, offering improved functionality and cost-effectiveness.
Implementation Method 1
a first step of calcining animal bone
Implementation Method 2
reacting a bone calcined product obtained in the first step with a basic carbonate compound
Data Source
AI summary
An efficient method of producing a carbonate apatite is provided. The method comprises: a first step of calcining animal bone; and a second step of reacting a bone calcined product obtained in the first step with a basic carbonate compound.