Removal of Hexavalent Chromium from Water Using a Biomaterial Synthesized from Tannins and Chrome Shaving Proteins Hydrolysate

  A new biomaterial called CT-PH was prepared by reacting chestnut tannin (CT) with proteins hydrolysate (PH) from wet blue chrome shavings (WBCS), for the purpose of removing hexavalent chromium Cr(VI) from water. The maximum equilibrium uptake of chromium by CT-PH was 40.16 mg/g at optimum pH = 3,...

Full description

Saved in:
Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2022-12, Vol.233 (12), p.504, Article 504
Main Authors: Nechchadi, Bouchra, Gallart-Mateu, Daniel, Krati, Mohammed El, de la Guardia, Miguel, Tahiri, Soufiane
Format: Article
Language:English
Subjects:
Adsorption
Analysis
Atmospheric Protection/Air Quality Control/Air Pollution
Biological products
Biomaterials
Biomedical materials
Chromium
Climate Change/Climate Change Impacts
Diffusion models
Earth and Environmental Science
Environment
Environmental monitoring
Exothermic reactions
Hexavalent chromium
Hydrogeology
Hydrolysates
Optimization
pH effects
Process parameters
Proteins
Shavings
Soil Science & Conservation
Tannins
Thermodynamics
Uptake
Water pollution
Water Quality/Water Pollution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:  A new biomaterial called CT-PH was prepared by reacting chestnut tannin (CT) with proteins hydrolysate (PH) from wet blue chrome shavings (WBCS), for the purpose of removing hexavalent chromium Cr(VI) from water. The maximum equilibrium uptake of chromium by CT-PH was 40.16 mg/g at optimum pH = 3, contact time of 240 min, and temperature of 25 °C. The optimal CT-PH dosage was 150 mg per 50 mL of Cr(VI) solution at 50 mg/L. The equilibrium data followed the Langmuir isotherm model and pseudo-second-order kinetic model. The intraparticle diffusion model was applied to understand the mechanism of the adsorption process. Thermodynamic parameters indicated that the Cr(VI) adsorption onto CT-PH biomaterial is physical in nature, spontaneous, and exothermic at 298.15 − 353.15 K, and that there is a decrease in the randomness at the solid/solution interface during the adsorption. Furthermore, reusability experiments proved that CT-PH can be reused multiple times. On the whole, results indicate that CT-PH can be employed as an alternative to conventional adsorbents for removing Cr(VI) from contaminated water. Graphical Abstract
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-022-05977-z