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Removal of ciprofloxacin from aqueous solution by a continuous flow electro-coagulation process
Farideh Nabizadeh Chianeh,Jalal Basiri Parsa,Taher Mehdi Panah 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.3
This study deals with the performance and modeling of the electro-coagulation process for ciprofloxacin (CIP) removal by using aluminum electrode as anode in a continuous electrochemical reactor. The initial pH, temperature, current density, time and flow rate were selected as independent variables in response surface methodology (RSM) involving a five-level central composite design (CCD), while CIP removal efficiency was considered as the response function. The result of optimization showed that the maximum amount of CIP removal efficiency (88%) presented at the optimal condition of pH=5.6, t=100min, T=25.5 oC, I=5.6mA/cm2 and V=25.9 mL/min. In addition, the mineralization of the CIP was investigated by chemical oxygen demand (COD) and total organic carbon (TOC) measurements that showed 77% COD removal and 49%TOC removal.
Mahsa Khorram,Farideh Nabizadeh Chianeh,Mozhgan Shamsodin 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.114 No.-
The nanofiltration membranes were prepared based on Poly Ether Sulfone (PES) via the phase inversionmethod in the study. The membranes were subsequently fabricated through interfacial polymerizationbetween Piperazine (PIP) and Trimesoyl Chloride (TMC) monomers. Consequently, the fabricated membraneswere modified using Bismuth Oxide (Bi2O3) nanoparticles. Bi2O3 nanoparticles were dispersedin PIP aqueous solution (Nano Bi2O3-TFCaq) and in TMC organic solution (Nano Bi2O3-TFCorg) by two differentprocedures to investigate the effect of nanoparticles and the manufacturing process on membraneproperties. The prepared membranes were characterized via Fourier transform infrared spectroscopy (FTIR),scanning electron microscopy (SEM) analysis, atomic force microscopy (AFM), tensile strength, andzeta potential analysis. The tests were performed to check the surface structure, chemical composition,and hydrophilicity of the modified membrane. Also, the salt and BSA rejection rate of the membraneswere investigated. Besides, both modified membranes were used to remove Hydrochlorothiazide(HCTZ) drug as the target pollutant. Eventually, it was concluded that the novel Nano Bi2O3-TFC membranescould be so useful in wastewater treatment.
Marjan Esmaelian,Farideh Nabizadeh Chianeh,Alireza Asghari 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.78 No.-
A novel Ti/nanoSnO2-MWCNT electrode was prepared by electrophoretic deposition method forciprofloxacin (CIP) treatment. The electrochemical characterization indicated that the electrochemicalactivity of Ti/nanoSnO2-MWCNT electrode was superior to the Ti/nanoSnO2 and Ti electrodes. To obtainmaximal CIP removal efficiency; pH, current density, electrolysis time and electrolyte concentration werechosen as independent variables in central composite design. Under the optimal conditions, the maximalvalues 89.61% and 86.30% were achieved for CIP and chemical oxygen demand removal efficiencies,respectively. Based on the results, the good electro-catalytic performance of Ti/nanoSnO2-MWCNTelectrode makes it low-cost and promising anode for electrochemical oxidation of drug pollutants.
Jalal Basiri Parsa,Farideh Nabizadeh Chianeh 한국화학공학회 2012 Korean Journal of Chemical Engineering Vol.29 No.11
This research has two parts: at first part electro coagulation (EC) method was used to remove the dye Direct Black 22 (DB22 (in aqueous media. All experiments were done in a 2 liter reactor with two electrodes made of steel (SS-304) as cathodes and one aluminum electrode as anode. Parameters affecting the process, such as anode material,electrolyte concentration, current density, initial pH of solution and the initial dye concentration, were investigated. Total amount of consumed energy was used for determination of optimal conditions. According to the results obtained for DB22 at optimized conditions, color and COD removal percentage were 92% and 85%, respectively. In addition,the current efficiency for aluminum anode in removal of DB22 was 90%. At the second part of the research work, color removal by EC for six different dyes was evaluated. The results showed that dye structure and anode type are very important factors on performance of the process.