TY - JOUR
T1 - Influence of Sodium Sulfate on the Direct Red 28 Degradation by Ozone in a Wastewater Recycling Process
T2 - A Stoichiometric and Novel Image Analysis
AU - Pérez, Arizbeth
AU - Poznyak, Tatyana
AU - Chairez, Isaac
AU - Guzmán-Zavaleta, Z. Jezabel
AU - Alfaro-Ponce, Mariel
N1 - Publisher Copyright:
© 2019 International Ozone Association.
PY - 2020/9/2
Y1 - 2020/9/2
N2 - The current study presents the treatment of water contaminated with the dye Direct Red 28 in the presence of Na2SO4 at three different concentrations (10, 40 and 80 g/L) by simple ozonation. This wastewater treatment was considered in a wastewater recycling process. At the end of each ozonation cycle, ozonation dynamics, ozone consumption, pH, electrical conductivity and UV/Vis spectra variation were analyzed and correlated with the stoichiometric analysis balance. The efficiency of the wastewater treatment in each reuse cycle was evaluated by a novel image processing method. The image results show that the presence of sulfate improves more than 45% the dye fixation on a cotton sample. However, at high additive concentrations, the color quality decreases 25%, compared with the system with low additive concentration, due to the presence of peroxysulfate ions and the compounds accumulated through the ozonation process.
AB - The current study presents the treatment of water contaminated with the dye Direct Red 28 in the presence of Na2SO4 at three different concentrations (10, 40 and 80 g/L) by simple ozonation. This wastewater treatment was considered in a wastewater recycling process. At the end of each ozonation cycle, ozonation dynamics, ozone consumption, pH, electrical conductivity and UV/Vis spectra variation were analyzed and correlated with the stoichiometric analysis balance. The efficiency of the wastewater treatment in each reuse cycle was evaluated by a novel image processing method. The image results show that the presence of sulfate improves more than 45% the dye fixation on a cotton sample. However, at high additive concentrations, the color quality decreases 25%, compared with the system with low additive concentration, due to the presence of peroxysulfate ions and the compounds accumulated through the ozonation process.
KW - Ozonation
KW - additives
KW - azo dye
KW - dye fixation quality
KW - image processing
KW - recycling
KW - sodium sulfate
UR - http://www.scopus.com/inward/record.url?scp=85075190822&partnerID=8YFLogxK
U2 - 10.1080/01919512.2019.1688134
DO - 10.1080/01919512.2019.1688134
M3 - Artículo
SN - 0191-9512
VL - 42
SP - 428
EP - 438
JO - Ozone: Science and Engineering
JF - Ozone: Science and Engineering
IS - 5
ER -