Application of integrated ozone and granular activated carbon for decolorization and chemical oxygen demand reduction of vinasse from alcohol distilleries

This study investigates the treatment of the distilleries vinasse using a hybrid process integrating ozone oxidation and granular activated carbons (GAC) in both batch and continuous operation mode. The batch-process studies have been carried out to optimize initial influent pH, GAC doses, the effec...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental management 2016-04, Vol.170, p.28-36
Main Authors: Hadavifar, Mojtaba, Younesi, Habibollah, Zinatizadeh, Ali Akbar, Mahdad, Faezeh, Li, Qin, Ghasemi, Zahra
Format: Article
Language:English
Subjects:
Activated carbon
Cane molasses
Charcoal - chemistry
Chemical oxygen demand
Coloring Agents - chemistry
Distilleries
Humans
Hydrogen peroxide
Industrial Waste
Oxidation
Oxygen - chemistry
Ozonation
Ozone
Ozone - chemistry
Synergistic effect
Vinasse
Waste Disposal, Fluid - methods
Wastewater treatment
Water Pollutants, Chemical - chemistry
Water Purification - methods
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:This study investigates the treatment of the distilleries vinasse using a hybrid process integrating ozone oxidation and granular activated carbons (GAC) in both batch and continuous operation mode. The batch-process studies have been carried out to optimize initial influent pH, GAC doses, the effect of the ozone (O3) and hydrogen peroxide (H2O2) concentrations on chemical oxygen demand (COD) and color removal of the distilleries vinasse. The continuous process was carried out on GAC and ozone treatment alone as well as the hybrid process comb both methods to investigate the synergism effectiveness of the two methods for distilleries vinasse COD reduction and color removal. In a continuous process, the Yan model described the experimental data better than the Thomas model. The efficiency of ozonation of the distilleries vinasse was more effective for color removal (74.4%) than COD removal (25%). O3/H2O2 process was not considerably more effective on COD and color removal. Moreover, O3/GAC process affected negatively on the removal efficiency by reducing COD and color from distilleries vinasse. The negative effect decreased by increasing pH value of the influent. •The effect of O3/GAC on COD and color removal of vinasse was investigated.•The synergistic effect of GAC and O3 on COD reduction of vinasse was studied.•Integrated O3/GAC process affected negatively on COD and color removal from vinasse.•O3/GAC process did not show a synergistic effect on color and COD removal.
ISSN:0301-4797
1095-8630
DOI:10.1016/j.jenvman.2016.01.009