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

You might also read

Related Articles

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

Sort by
Same author

Hv1 inhibition rescues AD pathology by restoring microglial mitochondrial function and enhancing mitochondrial transfer.

Experimental & molecular medicine·2025
Same author

GPT2-ICC: A data-driven approach for accurate ion channel identification using pre-trained large language models.

Journal of pharmaceutical analysis·2025
Same author

Small molecule inhibits KCNQ channels with a non-blocking mechanism.

Nature chemical biology·2025
Same author

Facile fabrication of semi-IPN hydrogel adsorbent based on quaternary cellulose via amino-anhydride click reaction in water.

International journal of biological macromolecules·2022
Same author

Performance-Based Fault Detection and Fault-Tolerant Control for Nonlinear Systems With T-S Fuzzy Implementation.

IEEE transactions on cybernetics·2019
Same author

Urinary metal and metalloid biomarker study of Henoch-Schonlein purpura nephritis using inductively coupled plasma orthogonal acceleration time-of-flight mass spectrometry.

Talanta·2017

Related Experiment Video

Updated: Dec 20, 2025

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

4.0K

Adsorption of hexavalent chromium using modified walnut shell from solution.

Jingyi Li1, Jie Ma1, Qiehui Guo1

  • 1College of Chemistry, Zhengzhou University, 100 Kexue Road, Zhengzhou, 450001, China

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|May 28, 2020
PubMed
Summary
This summary is machine-generated.

Modified walnut shell effectively removes toxic hexavalent chromium (Cr(VI)) from water. This sustainable adsorbent shows high capacity and regenerability, offering a promising solution for wastewater treatment.

More Related Videos

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

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

10.4K

Related Experiment Videos

Last Updated: Dec 20, 2025

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

4.0K
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
Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
10:44

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

10.4K

Area of Science:

  • Environmental Science
  • Materials Science
  • Chemical Engineering

Background:

  • Hexavalent chromium (Cr(VI)) poses significant environmental and health risks.
  • Developing efficient and cost-effective adsorbents for Cr(VI) removal is crucial.

Purpose of the Study:

  • To synthesize and characterize modified walnut shell (MWS) for enhanced Cr(VI) adsorption.
  • To investigate the adsorption performance and mechanism of MWS for Cr(VI) removal.

Main Methods:

  • Walnut shells were modified using diethylenetriamine grafting.
  • Adsorption experiments were conducted in batch mode to optimize conditions (temperature, pH, salinity, contact time, Cr(VI) concentration).
  • Characterization techniques included FT-IR, XRD, and elemental analysis. Adsorption data were modeled using Langmuir, pseudo-second-order, and Yan models.

Main Results:

  • MWS exhibited enhanced adsorption capacity for Cr(VI) (50.1 mg·g⁻¹ at 303 K and pH 3).
  • Solution pH and salinity significantly impacted adsorption efficiency.
  • Langmuir and pseudo-second-order models accurately described equilibrium and kinetic processes, respectively.
  • The Yan model predicted column adsorption, and MWS showed regeneration ability.

Conclusions:

  • Modified walnut shell is a highly effective adsorbent for removing Cr(VI) from aqueous solutions.
  • The study provides insights into adsorption mechanisms and process modeling for Cr(VI) remediation.
  • MWS offers a sustainable and regenerable option for industrial wastewater treatment.