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

Adsorption Isotherms II01:25

Adsorption Isotherms II

Brunauer, Emmett, and Teller (BET) introduced a theory in 1938 that modified Langmuir's assumptions to explain multilayer physical adsorption. This theory is applicable to Type II isotherms and provides a more realistic picture of adsorption processes. The BET theory assumes a uniform solid surface with localized adsorption sites, where adsorption at one site doesn't affect adsorption at neighboring sites. This theory also allows for the possibility of additional molecules being adsorbed on top...
Adsorption Isotherms I01:29

Adsorption Isotherms I

Adsorption isotherms are mathematical models that describe how molecules in a gas or liquid phase interact with surfaces. Two of the most common isotherm models are the Langmuir and Freundlich isotherms, which relate to Type I monolayer chemisorption. The Langmuir model is based on four key assumptions:• Adsorption cannot exceed monolayer coverage.• All surface sites are equivalent.• Molecules adsorb only at vacant sites.• There are no interactions between adsorbed molecules.Consider the...
Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
Adsorption of Gases on Solids01:28

Adsorption of Gases on Solids

Adsorption is a process where molecules, known as the adsorbates, accumulate on a surface, which is referred to as the adsorbent or substrate. Occurring at the solid-gas interface, this phenomenon is crucial in various scientific and industrial contexts. The reverse of adsorption is desorption.Two types of adsorptions exist: physical (physisorption) and chemical (chemisorption). Physisorption involves gas molecules held to the solid's surface by relatively weak intermolecular van der Waals...

You might also read

Related Articles

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

Sort by
Same author

Green Synthesis of CuO Nanoparticles Using Beta vulgaris L. Extract for Removal of Methyl Violet Dye.

TheScientificWorldJournal·2026
Same author

Preparation and characterization of coconut shell activated carbon supported titanium dioxide nanocomposite (CSAC-P-TiO<sub>2-</sub>NC).

MethodsX·2026
Same author

Anionic cellulose-templated composites for hybrid adsorptive water treatment applications: Advances and perspectives.

International journal of biological macromolecules·2026
Same author

Herbal plant licorice (<i>Glycyrrhiza glabra</i>) root-activated carbon-based material for methyl violet and crystal violet dyes removal: thermochemical synthesis and experimental design optimization.

International journal of phytoremediation·2026
Same author

A review of the interactions between naphthenic acid fraction compounds (NAFCs) and polysaccharide-based adsorbents: Opportunities for remediation of tailing pond waters.

Carbohydrate polymers·2026
Same author

Binary Biobased Supramolecular Colloidal Suspensions: A Model for Sustainable Antibacterial Coatings and Soft Carrier Systems.

ACS applied bio materials·2026
Same journal

Preparation of a composite dust suppressant and investigation of its toxicity to lung tissue in C57BL/6 mice.

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering·2026
Same journal

Biodegradation of trimethoprim antibiotic by white rot fungus <i>Trametes hirsuta</i> D7 and its laccase: quantitative analysis, molecular docking, and metabolic pathway.

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering·2026
Same journal

Sequential struvite precipitation and biological processes for effective removal of ammonium nitrogen from latex concentrate wastewater.

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering·2026
Same journal

Effects of organochlorine pesticides (OCPs) on adolescent body composition: Integrating epidemiology and bioinformatics.

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering·2026
Same journal

PM<sub>2.5</sub> chemical composition in Cape Town, South Africa.

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering·2026
Same journal

Green synthesis of nickel oxide nanoparticles using <i>Calotropis procera</i> leaf extract for visible-light photocatalytic degradation of RBV-5R dye.

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering·2026
See all related articles

Related Experiment Video

Updated: Jun 8, 2026

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
10:44

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

Surface-modified activated carbon with β-cyclodextrin--Part II. Adsorption properties.

Jae H Kwon1, Lee D Wilson

  • 1Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.

Journal of Environmental Science and Health. Part A, Toxic/Hazardous Substances & Environmental Engineering
|October 7, 2010
PubMed
Summary
This summary is machine-generated.

Surface-modified activated carbon (AC) shows altered surface areas and sorption capacities for pollutants like p-nitrophenol (PNP) and methylene blue (MB). These modifications impact the effectiveness of AC in water treatment applications.

More Related Videos

A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture
08:00

A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture

Published on: September 29, 2023

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
09:31

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Published on: March 27, 2019

Related Experiment Videos

Last Updated: Jun 8, 2026

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
10:44

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture
08:00

A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture

Published on: September 29, 2023

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
09:31

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Published on: March 27, 2019

Area of Science:

  • Environmental Chemistry
  • Materials Science
  • Adsorption Science

Background:

  • Activated carbon (AC) is widely used for water purification.
  • Surface modification of AC can alter its adsorption properties.
  • Understanding these changes is crucial for optimizing water treatment processes.

Purpose of the Study:

  • To investigate the sorption properties of surface-modified activated carbon (AC).
  • To compare surface area measurements using nitrogen sorption and a dye-based method.
  • To evaluate the impact of modifications on the adsorption of p-nitrophenol (PNP) and methylene blue (MB).

Main Methods:

  • Surface modification of AC using glutaraldehyde and 1,4-phenylene diisocyanate.
  • Nitrogen sorption analysis to determine surface area (Langmuir and BET models).
  • Dye-based method using PNP and MB to determine surface area and sorption characteristics.

Main Results:

  • Nitrogen sorption showed significant decreases in surface area for modified AC compared to pristine AC.
  • Dye-based methods yielded different surface area values, with notable variations depending on the dye and pH.
  • Sorption capacity and binding affinity were estimated using isotherm models, indicating altered pollutant interactions.

Conclusions:

  • Surface modification significantly alters the measured surface area of activated carbon.
  • The choice of method (nitrogen sorption vs. dye-based) and experimental conditions (dye, pH) critically affects surface area determination.
  • Modified AC exhibits different sorption behaviors for PNP and MB, necessitating careful selection for specific contaminant removal.