Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
Application of Response Surface Methodology for Optimization of Electrochemical Process in Metronidazole (Mnz) Removal From Aqueous Solutions Using Stainless Steel 316 (Ss316) and Lead (Pb) Anodes Publisher



Moteshaker PM2 ; Rokni SE2 ; Farnoodian N3 ; Akhlaghi NM4 ; Saadi S1 ; Ahmadidoust G5 ; Yousefi A6
Authors
Show Affiliations
Authors Affiliations
  1. 1. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
  3. 3. Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
  4. 4. Department of Environment, University of Tehran, Tehran, Iran
  5. 5. Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
  6. 6. Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University Bonab, Bonab, Iran

Source: International Journal of Chemical Reactor Engineering Published:2020


Abstract

Pharmaceutical compounds in drinking water sources, in addition to threatening environmental health, increase bacterial resistance in aquatic environments. The purpose of this study was to investigate the application of response surface methodology for the optimization of the electrochemical process in the removal of metronidazole (MNZ) aqueous solutions using stainless steel 316 (SS316) and Lead (Pb) anodes. In this experimental study, the effect of different parameters including pH (4–10), electrolysis time (40–120 min), MNZ antibiotic concentration (30–150 mg/L), and current density (2–10 mA/cm2) on Antibiotic removal efficiency was evaluated by a central composite design method using Design-Expert software. Data were analyzed using ANOVA and p-Value tests. Hence, central composite design (CCD) established a reduced quadratic polynomial model with P-value < 0.0001 and R2 = 0.98. The optimal values for the solution pH initial, electrolysis time, current density, and MNZ antibiotic concentration were 5.5, 100.0 min, 8.0 mA/cm2, and 50 mg/ L, respectively. By employing the optimum conditions obtained, the maximum experimental removal efficiencies by SS316 and Pb anodes were 67.85 and 78.66%, respectively. The Chemical Oxygen Demand/total organic carbon (COD/TOC) ratio was decreased from 1.67 at the inlet to 1.53 at the outlet for SS316 and from 1.7 to 1.42 for Pb. Moreover, average oxidation state (AOS) was increased from 1.45 to 1.7 for SS316 and from 1.45 to 1.86 for Pb, which indicates the biodegradability of MNZ antibiotics by the electrochemical process. The electrochemical degradation process was identified as an effective method for the removal of MNZ from aquatic solutions, and it has an outstanding potential in removing other refractory pollutants from the environment. © 2020 De Gruyter. All rights reserved.
Related Docs
1. The Electrochemical Degradation of the Metronidazole (Mnz) Antibiotic Using Electrochemical Oxidation on a Stainless Steel316 Coated With Beta Lead Oxide (Ss316/Β-Pbo2) Anode, International Journal of Chemical Reactor Engineering (2020)
2. Electrochemical Removal of Diazinon Insecticide in Aqueous Solution by Pb/Β-Pbo2 Anode. Effect of Parameters and Optimization Using Response Surface Methodology, Water Environment Research (2020)
3. Application of Box–Behnken Design for Optimizing Parameters of Hexavalent Chromium Removal From Aqueous Solutions Using Fe3o4 Loaded on Activated Carbon Prepared From Alga: Kinetics and Equilibrium Study, Journal of Water Process Engineering (2021)
4. Heterogeneous Catalytic Ozonation by Nano-Mgo Is Better Than Sole Ozonation for Metronidazole Degradation, Toxicity Reduction, and Biodegradability Improvement, Desalination and Water Treatment (2016)
5. Loading of Zinc Oxide Nanoparticles From Green Synthesis on the Low Cost and Eco-Friendly Activated Carbon and Its Application for Diazinon Removal: Isotherm, Kinetics and Retrieval Study, Applied Water Science (2023)
6. Recent Progress on the Remediation of Metronidazole Antibiotic As Emerging Contaminant From Water Environments Using Sustainable Adsorbents: A Review, Journal of Water Process Engineering (2023)
Experts (# of related papers)
Mohammadhadi Dehghani Tafti (1)