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

Diazonium Group Substitution: –OH and –H01:19

Diazonium Group Substitution: –OH and –H

3.5K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
3.5K
Microbial Bioremediation of Pesticides01:28

Microbial Bioremediation of Pesticides

1
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
1
2° Amines to N-Nitrosamines: Reaction with NaNO201:20

2° Amines to N-Nitrosamines: Reaction with NaNO2

5.7K
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
5.7K

You might also read

Related Articles

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

Sort by
Same author

Valorization of food waste as adsorbents for toxic dye removal from contaminated waters: A review.

Journal of hazardous materials·2021
Same author

Eco-friendly pH detecting paper-based analytical device: Towards process intensification.

Analytica chimica acta·2021
Same author

Extraction and detection methods of microplastics in food and marine systems: A critical review.

Chemosphere·2021
Same author

Techniques and modeling of polyphenol extraction from food: a review.

Environmental chemistry letters·2021
Same author

Photocatalytic degradation of 2,4-dicholorophenoxyacetic acid by TiO<sub>2</sub> modified catalyst: kinetics and operating cost analysis.

Environmental science and pollution research international·2021
Same author

Immobilized TiO<sub>2</sub>/chitosan beads for photocatalytic degradation of 2,4-dichlorophenoxyacetic acid.

International journal of biological macromolecules·2020

Related Experiment Video

Updated: Mar 21, 2026

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
06:36

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper

Published on: February 27, 2021

4.3K

Nitrate decontamination through functionalized chitosan in brackish water.

Sowmya Appunni1, Mathur P Rajesh1, Sivaraman Prabhakar1

  • 1Department of Chemical Engineering, School of Bioengineering, SRM University, Kattankulathur-603 203, Kancheepuram District, Tamil Nadu, India.

Carbohydrate Polymers
|May 15, 2016
PubMed
Summary

N, N, N-Triethyl ammonium functionalized cross-linked chitosan beads (TEACCB) efficiently remove nitrate from brackish water. This novel adsorbent shows high capacity, selectivity, and reusability, offering a promising technology for nitrate remediation.

Keywords:
Brackish waterChitosanColumn studyNitrate

More Related Videos

Bridging the Bio-Electronic Interface with Biofabrication
16:38

Bridging the Bio-Electronic Interface with Biofabrication

Published on: June 6, 2012

17.4K
Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time
11:05

Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time

Published on: October 26, 2016

9.6K

Related Experiment Videos

Last Updated: Mar 21, 2026

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
06:36

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper

Published on: February 27, 2021

4.3K
Bridging the Bio-Electronic Interface with Biofabrication
16:38

Bridging the Bio-Electronic Interface with Biofabrication

Published on: June 6, 2012

17.4K
Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time
11:05

Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time

Published on: October 26, 2016

9.6K

Area of Science:

  • Environmental Chemistry
  • Materials Science
  • Water Treatment

Background:

  • Nitrate contamination in brackish water poses significant environmental and health risks.
  • Development of efficient and selective adsorbents is crucial for nitrate removal.

Purpose of the Study:

  • To synthesize and characterize N, N, N-Triethyl ammonium functionalized cross-linked chitosan beads (TEACCB) for nitrate removal.
  • To evaluate the adsorption capacity, selectivity, kinetics, and thermodynamics of TEACCB for nitrate.
  • To assess the reusability and performance of TEACCB in a column study for brackish water treatment.

Main Methods:

  • Alkylation of glutaraldehyde cross-linked chitosan beads to create TEACCB.
  • Characterization using FTIR, SEM, EDAX, TGA, DTA, BET surface area, swelling ratio, and pHzpc.
  • Batch adsorption experiments to determine nitrate removal capacity and selectivity.
  • Kinetic and thermodynamic studies.
  • Regeneration and column adsorption experiments.

Main Results:

  • TEACCB exhibited a maximum nitrate removal capacity of 2.26 meq/g, surpassing other chitosan-based adsorbents.
  • TEACCB demonstrated high selectivity for nitrate in the presence of common anions like chloride and sulfate.
  • Nitrate removal followed pseudo-second-order kinetics and was spontaneous and exothermic.
  • TEACCB was reusable with 100% efficiency after regeneration with 0.05N HCl.

Conclusions:

  • TEACCB is a highly efficient and selective adsorbent for nitrate removal from brackish water.
  • The adsorbent's performance, reusability, and favorable kinetics/thermodynamics highlight its potential for practical applications.
  • TEACCB-based technology offers a promising solution for developing effective nitrate removal systems.