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

Sample Preparation for Analysis: Advanced Techniques01:08

Sample Preparation for Analysis: Advanced Techniques

Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Qualitative Analysis03:46

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...

You might also read

Related Articles

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

Sort by
Same author

Preoperative virtual stoma site marking in colorectal surgery: a pilot study exploring a telemedicine-based solution for limited-access settings.

Techniques in coloproctology·2025
Same author

Diagnostic value of routine haematological and biochemical testing in clinically healthy ASA I cats undergoing elective ovariohysterectomy and orchiectomy.

The Journal of small animal practice·2025
Same author

HETEROKARYOTIC MONOZYGOTIC TURNER TWINS: AN INTERESTING PRESENTATION.

Acta endocrinologica (Bucharest, Romania : 2005)·2025
Same author

High frequency of transient congenital hypothyroidism among infants referred for suspected congenital hypothyroidism from the Turkish National screening program: thyroxine dose may guide the prediction of transients.

Journal of endocrinological investigation·2024
Same author

Comparison of Bipolar vascular sealing and conventional back-table dissection in terms of post-renal transplant drainage and back-table preparation times.

European review for medical and pharmacological sciences·2023
Same author

TWO OPPOSITE PHENOTYPES OF GLUCOSE DISORDERS IN A FAMILY WITH HETEROZYGOUS P.SER453LEU (C.1358C> T) MUTATION IN THE GLUCOKINASE (GCK) GENE: MATURITY ONSET DIABETES IN YOUNG AND INSULINOMA.

Acta endocrinologica (Bucharest, Romania : 2005)·2023

Related Experiment Video

Updated: Jun 26, 2026

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
09:39

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

Removal of basic dye using raw and acid activated bentonite samples.

E Eren1, B Afsin

  • 1Ahi Evran University, Faculty of Arts and Science, Department of Chemistry, 40100 Kirsehir, Turkey. eeren@ahievran.edu.tr

Journal of Hazardous Materials
|February 4, 2009
PubMed
Summary

Acid-activated bentonite effectively adsorbs crystal violet dye from water. This study details the adsorption kinetics and isotherms, showing rapid removal rates and optimal fit with the pseudo-second order model.

More Related Videos

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide
08:01

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Published on: June 28, 2019

Extraction of Ramie Fiber in Alkali Hydrogen Peroxide System Supported by Controlled-release Alkali Source
07:13

Extraction of Ramie Fiber in Alkali Hydrogen Peroxide System Supported by Controlled-release Alkali Source

Published on: February 6, 2018

Related Experiment Videos

Last Updated: Jun 26, 2026

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
09:39

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide
08:01

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Published on: June 28, 2019

Extraction of Ramie Fiber in Alkali Hydrogen Peroxide System Supported by Controlled-release Alkali Source
07:13

Extraction of Ramie Fiber in Alkali Hydrogen Peroxide System Supported by Controlled-release Alkali Source

Published on: February 6, 2018

Area of Science:

  • Environmental Science
  • Materials Science
  • Chemistry

Background:

  • Crystal violet (CV(+)) is a common dye pollutant in aqueous solutions.
  • Bentonite, a natural clay, is a potential adsorbent for dye removal.
  • Acid activation enhances bentonite's adsorption properties.

Purpose of the Study:

  • To investigate the adsorption behavior of crystal violet (CV(+)) onto raw bentonite (RB) and acid-activated bentonite (AAB).
  • To evaluate the influence of initial CV(+) concentration, contact time, and temperature on adsorption.
  • To determine the adsorption kinetics and equilibrium isotherms.

Main Methods:

  • Adsorption experiments were conducted using RB and AAB samples.
  • Langmuir and Freundlich models were used to analyze equilibrium adsorption isotherms.
  • Pseudo-first order and pseudo-second order kinetic models were applied to kinetic data.

Main Results:

  • Adsorption was rapid, with over 50% CV(+) removed within 55 min for RB and 25 min for 0.2-AAB at room temperature.
  • Adsorption data best fitted the pseudo-second order kinetic model for both RB and AAB.
  • Rate constants (k(2)) were evaluated for both adsorbents.

Conclusions:

  • Acid-activated bentonite exhibits efficient adsorption of crystal violet from aqueous solutions.
  • The pseudo-second order kinetic model accurately describes the adsorption process.
  • Bentonite, particularly acid-activated forms, shows promise for wastewater treatment applications.