Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Essential Minerals for Bone Health

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...

Factors Affecting Solubility

Factors Affecting Solubility

Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:

Hydration of Cement

Hydration of Cement

Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Analysis of spatiotemporal dynamics and driving factors of Zhejiang important agricultural heritage systems.

Scientific reports·2026

Same author

Gradient-Driven Galvanic Effect Enables Self-Sustained Peroxymonosulfate Activation in a Stacked Flow Reactor.

Environmental science & technology·2026

Same author

Machine learning models decipher environmental pollutant-driven core genes in glioblastoma: Biomarkers for diagnosis, recurrence, and prognosis.

Journal of environmental sciences (China)·2026

Same author

Orientated reception-emission of electrons at Fe single atoms driving emerging contaminants decomposition via Fe-O/C d-pπ conjugated effect.

Journal of hazardous materials·2026

Same author

Dual-Substrate Synergistic Photocatalysis: Exogenous Reagent-Free Co-Removal of Phenol and Cr(VI) via Electron-Donor-Mediated Redox Coupling over Modified Carbon Nitride.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026

Same author

Self-Powered CaO<sub>2</sub>/Heme@Zn-MOF Enabled Fluorescence Immunosensing Strategy for Accurate and Selective Isoprocarb Monitoring.

Langmuir : the ACS journal of surfaces and colloids·2026

Search research articles

Related Experiment Video

Updated: May 20, 2026

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications

Published on: February 23, 2017

Enhanced fluoride adsorption using Al (III) modified calcium hydroxyapatite.

Yulun Nie¹, Chun Hu, Chuipeng Kong

¹State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.

Journal of Hazardous Materials

|July 31, 2012

Summary

Aluminum-modified hydroxyapatite (Al-HAP) significantly enhances fluoride removal compared to unmodified hydroxyapatite (HAP). This Al-HAP material offers a more efficient and spontaneous adsorption process for defluoridation.

More Related Videos

Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering

Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering

Published on: July 27, 2022

Development of Amelogenin-chitosan Hydrogel for In Vitro Enamel Regrowth with a Dense Interface

Development of Amelogenin-chitosan Hydrogel for In Vitro Enamel Regrowth with a Dense Interface

Published on: July 10, 2014

Related Experiment Videos

Last Updated: May 20, 2026

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications

Published on: February 23, 2017

Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering

Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering

Published on: July 27, 2022

Development of Amelogenin-chitosan Hydrogel for In Vitro Enamel Regrowth with a Dense Interface

Development of Amelogenin-chitosan Hydrogel for In Vitro Enamel Regrowth with a Dense Interface

Published on: July 10, 2014

Area of Science:

Materials Science
Environmental Chemistry
Adsorption Science

Background:

Hydroxyapatite (HAP) is a key material in various applications, but its defluoridation capacity can be limited.
Fluoride contamination in water poses significant health risks, necessitating effective removal strategies.

Purpose of the Study:

To synthesize and characterize aluminum-modified hydroxyapatite (Al-HAP).
To evaluate the defluoridation capacity and adsorption mechanism of Al-HAP for fluoride removal from aqueous solutions.

Main Methods:

X-ray diffraction (XRD) and Brunauer-Emmett-Teller (BET) analyses for material characterization.
Batch adsorption experiments to determine defluoridation capacity (DC) and study the effects of pH, Al/Ca ratio, and co-existing anions.
Langmuir isotherm and pseudo-second-order kinetic models were applied to adsorption data.

Main Results:

Al-HAP exhibited a higher defluoridation capacity (32.57 mgF(-)/g) compared to HAP (16.38 mgF(-)/g).
Adsorption followed Langmuir isotherm and pseudo-second-order kinetics, indicating chemisorption.
Surface hydroxyl groups on Al-HAP act as adsorption sites, leading to enhanced fluoride removal efficiency.

Conclusions:

Aluminum modification significantly improves the defluoridation performance of hydroxyapatite.
Al-HAP is a promising adsorbent for efficient fluoride removal from water.
The adsorption process is spontaneous and endothermic, driven by surface hydroxyl groups.