Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Factors Affecting Solubility04:01

Factors Affecting Solubility

36.4K
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:
36.4K
Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

5.7K
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...
5.7K
Coagulation01:06

Coagulation

1.1K
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
1.1K
Minerals01:26

Minerals

991
Minerals are essential nutrients that the human body needs in small amounts to work properly. They play a vital role in many bodily functions, such as building strong bones and transmitting nerve impulses. Some minerals are needed for hormone production or to maintain a normal heartbeat. Major minerals include calcium, phosphorus, potassium, sulfur, sodium, chlorine, and magnesium, while trace minerals include iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium.
 
Major...
991

You might also read

Related Articles

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

Sort by
Same author

Record Carrier Diffusion Lengths in Large, Dense Nonfullerene Electron Acceptor Crystals Grown from Polar Aromatic Solvents.

Journal of the American Chemical Society·2026
Same author

The Impact of Northern Territory Alcohol Policy Changes on Adult Domestic and Family Violence Hospital Admissions.

Drug and alcohol review·2026
Same author

Development, implementation, and evaluation of clinical practice guidelines, protocols, and pathways used in rural and remote Australia, Canada, and Aotearoa New Zealand: a scoping review.

JBI evidence synthesis·2026
Same author

Is Point of Care Three-Dimensional Printing of Polyaryletherketone Triflange Cups Feasible for Revision Total Hip Arthroplasty?

The Journal of arthroplasty·2026
Same author

Prevalence of Malnutrition and Its Associated Factors Among Children in the 5-15 Years Age Group: A Community-Based Cross-Sectional Study From Selected Rural Areas of Khordha District, Odisha.

Cureus·2026
Same author

Author Correction: Ocean heat forced West Antarctic Ice Sheet retreat after the Last Glacial Maximum.

Nature communications·2026

Related Experiment Video

Updated: Dec 25, 2025

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method
08:21

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

Published on: May 18, 2018

15.0K

Modified Crushed Oyster Shells for Fluoride Removal from Water.

Woohang Kim1, Rekha Singh2, James A Smith2

  • 1Department of Environmental Engineering & Biotechnology, Mokpo National Maritime University, 91 Haeyangdaehak-ro, Mokpo, 58628, South Korea. whkim@mmu.ac.kr.

Scientific Reports
|April 3, 2020
PubMed
Summary

Discarded oyster shells, modified with phosphoric acid, effectively remove fluoride from groundwater. This sustainable method utilizes waste materials for water purification, offering a high removal rate.

More Related Videos

Implementation of a Hyperbolic Vortex Plasma Reactor for the Removal of Micropollutants in Water
06:35

Implementation of a Hyperbolic Vortex Plasma Reactor for the Removal of Micropollutants in Water

Published on: July 25, 2025

770
Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
11:14

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Published on: February 21, 2017

12.8K

Related Experiment Videos

Last Updated: Dec 25, 2025

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method
08:21

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

Published on: May 18, 2018

15.0K
Implementation of a Hyperbolic Vortex Plasma Reactor for the Removal of Micropollutants in Water
06:35

Implementation of a Hyperbolic Vortex Plasma Reactor for the Removal of Micropollutants in Water

Published on: July 25, 2025

770
Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
11:14

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Published on: February 21, 2017

12.8K

Area of Science:

  • Environmental Chemistry
  • Materials Science
  • Water Treatment

Background:

  • Elevated fluoride concentrations in natural groundwater pose a global health concern.
  • Oyster shells represent an abundant, underutilized waste material with potential for environmental remediation.

Purpose of the Study:

  • To investigate the efficacy of modified oyster shells as adsorbents for fluoride removal from aqueous solutions.
  • To evaluate different treatment methods for oyster shells to enhance their fluoride adsorption capacity.

Main Methods:

  • Oyster shells were processed into powder (OS), calcined (COS), and treated with phosphoric acid (POS).
  • Combinations of OS and COS with phosphoric acid (OS+P, COS+P) were prepared.
  • Adsorption experiments were conducted to determine fluoride removal efficiency and kinetics.

Main Results:

  • Phosphoric acid-treated oyster shell (POS) and oyster shell with phosphoric acid (OS+P) achieved high fluoride removal efficiencies (96% and 100%, respectively) at a low sorbent dose (1 g/L).
  • Calcined oyster shell (COS) and untreated oyster shell powder (OS) showed lower removal rates (50% and 46%).
  • Sorption kinetics followed second-order reaction rates, and isotherms were best described by the Freundlich model.

Conclusions:

  • Modified oyster shells, particularly POS and OS+P, are highly effective and efficient sorbents for removing fluoride from water.
  • Utilizing waste oyster shells for fluoride remediation offers a sustainable and cost-effective solution for improving water quality.