A continuous process in mixers-settlers for the removal/recovery of chromium in effluents from the tanning industry

One of the main environmental issues caused by the tanning industry is given by the high concentration of chromium contained on its effluents. The removal of this pollutant has become a technological challenge. To solve this issue, this work proposes a continuous process based on mixers-settlers for...

Full description

Saved in:
Bibliographic Details
Published in:Environmental monitoring and assessment 2023-10, Vol.195 (10), p.1258-1258, Article 1258
Main Authors: Martínez-Pérez, Carlos Benito, Gamiño-Arroyo, Zeferino, Gómez-Castro, Fernando Israel, Hernández, Salvador, Rodríguez-Alejandro, David Aarón, Sánchez-Cadena, Lorena Eugenia, Tadeo-Chávez, Alejandro, Uribe-Ramírez, Agustín Ramón
Format: Article
Language:English
Subjects:
Adsorption
Atmospheric Protection/Air Quality Control/Air Pollution
Chromium
Earth and Environmental Science
Ecology
Ecotoxicology
Effluents
Environment
Environmental Management
Environmental monitoring
Leather & leather products
Liquid-liquid extraction
Mathematical models
Mixers
Monitoring/Environmental Analysis
Recovery
Removal
Settlers
Solvent extraction
Sulfuric acid
Sulphuric acid
Tanning
Tanning industry
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:One of the main environmental issues caused by the tanning industry is given by the high concentration of chromium contained on its effluents. The removal of this pollutant has become a technological challenge. To solve this issue, this work proposes a continuous process based on mixers-settlers for the removal of the chromium present in effluents from the tanning industry. The process involves the use of liquid-liquid extraction systems. The study includes the development of isotherms for the removal and stripping, which are further represented through a mathematical model to determine the number of theoretical extraction stages and other operational variables. The results show that a better extraction is achieved in a system with two theoretical stages using Cyanex 272 as extractant, reaching more than 94% of removal of chromium with an extractant concentration of 0.32 mol/L. For stripping, sulfuric acid is used, obtaining a maximum recovery of 94%. Graphical Abstract
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-023-11668-x