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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.
Rafsanjani, Hamed Nabizadeh,Ahn, Changbum R.,Chen, Jiayu Elsevier 2018 Energy and buildings Vol.172 No.-
<P><B>Abstract</B></P> <P>Occupants’ energy-consuming behaviors have a significant influence on overall energy consumption in commercial buildings. Accordingly, understanding and intervening in these behaviors offers a significant opportunity for energy savings in commercial buildings. Current approaches to behavior modification rely on available occupant-specific energy consumption data, but capturing such data is generally expensive. One possible solution to this challenge is to link energy consumption to individual occupants’ energy-use behaviors in commercial buildings. In this context, this study proposes a non-intrusive occupant load monitoring (NIOLM) approach that couples occupancy-sensing data—captured from existing Wi-Fi infrastructures—with power changes in aggregate building-wide energy data to thereby disaggregate building-wide data down to the individual. This paper describes two case studies that investigate the feasibility of using the NIOLM approach to identify occupant-specific energy consumption information. Tracking eleven occupants’ energy-use behaviors using NIOLM over a four-month period resulted in an average F-measure of 0.778 and Accuracy of 0.955. The case studies thereby demonstrated that NIOLM successfully tracks individual occupants’ energy-consuming behaviors at minimal cost by utilizing existing high-resolution metering devices and Wi-Fi network infrastructures in commercial buildings.</P>
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.
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.
Iravani, Effat,Nami, Navabeh,Nabizadeh, Fatemeh,Bayani, Elham,Neumuller, Bernhard Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.11
The reaction of $LnCl_3{\cdot}7H_2O$ [Ln = La (1), Ce (2)] with salicylic acid (HL) and 1,10-phenanthroline (Phen) at $20^{\circ}C$ in $H_2O$/ethanol gave after work-up and recrystallization two novel lanthanide complexes with general formula $[Ln(Phen)_2(L)_3(HL)]{\cdot}H_2O$. Compounds 1 and 2 were characterized by IR and UV-Vis spectroscopy, TGA, CHN as well as by X-ray analysis. According to these results, compounds 1 and 2 are isostructural and contain $Ln^{3+}$ ions with coordination number nine. Complexes 1 and 2 consist of two Phen, one neutral HL and three L anions (two L anions act as monodentate ligands and the third one is chelating to $Ln^{3+}$). Thermal decomposition led to primary loss of the Phen molecules. Then HL molecules and finally L moieties left the material to give $Ln_2O_3$.
Nader Yousefi,Ramin Nabizadeh,Simin Nasseri,Mehdi Khoobi,Shahrokh Nazmara,Amir Hossein Mahvi 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.8
The objective of this research was to use tannic acid (TA) as polyphenol monomer and trimesoyl chloride (TMC) to synthesize the nano-composite membranes and its application for dye removal from water. The combined effects of factors were studied by response surface methodology (RSM). Synthesized membrane was characterized by field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and water contact angle measurement. The results showed that monomer concentrations and post treatment (time and temperature) had a significant effect on the membrane synthesis. The predicted optimum operational conditions were initial direct blue 71 concentration of 30.31mg/L; time of 16.96 min, applied pressure of 1.16 bar. Fouling mechanism was pore sealing (n=1.96). The excellent antifouling properties and resistance ability to organic and chemical reagents of the prepared composite nanofiltration membranes caused to suggest this membrane for water treatment.
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.
Mansour Baziar,Ramin Nabizadeh,Amir Hossein Mahvi,Mahmood Alimohammadi,Kazem Naddafi,Alireza Mesdaghinia,Hassan Aslani 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.5
4-Chlorophenol (4-CP) is a hazardous and toxic chemical that enters into water bodies mainly through industrial effluents. The present study investigated the effect of under pressure dissolved oxygen on 4-CP degradation in the presence of nanoscale zero-valent iron (nZVI) and sodium persulfate. The impact of oxygen pressure, as a qualitative variable at three levels (1, 1.5 and 2 atm), along with five quantitative variables, including persulfate concentration (0-2mM), nZVI dosage (0-1 g/L), pH (3-11), reaction time (5-90min) and 4-CP concentration (50-500mg/L) on the 4-CP elimination from aqueous solutions, was examined using response surface methodology. There was a direct relationship between the dissolved oxygen under pressure and the 4-CP removal efficiency. Also, the gained R2 and adjusted R2 for three developed models of 1, 1.5 and 2 atm oxygen pressure were 0.971 and 0.9569, 0.9689 and 0.9538, and 0.9642 and 0.9468, respectively. The best removal process conditions for pH 4.2, 1.6mM persulfate, 64.79 min reaction time, 97.89mg/L initial 4-CP and 1 g/L nZVI dosage. The results indicated that dissolved oxygen under pressure- nZVI-persulfate could be considered a promising process for elimination of organic compounds from aqueous solutions.
Farnaz Tahmasebi,Mahmood Alimohammadi,Ramin Nabizadeh,Mehdi Khoobi,Kamaledin Karimian,Ahmad Zarei 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.6
We investigated the removal efficiency of humic acid from aqueous solutions by cotton coated with graphene oxide. This research has been conducted as batch on an experimental scale. A self-arrangement approach was introduced in fabrication of the cotton adsorbent coated with graphene oxide. To determine the effect of parameters, including initial concentration, pH, adsorbent dosage and contact time, central composite design (CCD) was employed in response surface method (RSM). The adsorption kinetics were determined based on different times of adsorption of humic acid. Further, the adsorption isotherms were also examined using different concentrations of humic acid. The results obtained showed that with increasing adsorbent dosage and contact time, the removal efficiency increased, while with increasing pH and initial concentration of humic acid, the removal efficiency decreased. The optimal values based on RSM method were obtained as the following: humic acid initial concentration=13.61mg/L, pH=3.87, adsorbent dosage=0.61 g, and contact time=168.43min. Langmuir isotherm with R2=0.9987 has been the most suitable model for explaining the adsorption process. Investigation of the adsorption kinetics indicated that humic acid adsorption follows pseudo-second-order model (R2=0.9822). The results indicated that the cotton adsorbent coated with graphene oxide has a good potential for removal of humic acid from aqueous solutions. Mechanical flexibility, availability, and low operational energy costs are among the advantages of this method for fabrication of this adsorbent, which can be developed and used for reducing environmental contaminants.
Role of CODPCP/CODTotal ratio on p-chlorophenol toxicity towards aerobic granular sludge
Alireza Mesdaghinia,Mohammad Hossein Ghahremani,Ramin Nabizadeh,Simin Nasseri,Mohammad Rafiee 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.54 No.-
Aerobic granular sludge (AGS) has emerged as a promising biotechnology for the treatment of industrial wastewaters. The biodegradation of AGS utilizing p-chlorophenol (PCP) was investigated under various CODPCP/CODTotal ratios. The initially developed microbial granules were used for degradation of PCP, with monoethylene glycol (MEG) as co-substrate. Heterotrophic bacteria in AGS appeared to adapt fairly rapidly to PCP, and a near complete recovery of their metabolic activity was noticed after about 4 d of exposure to high PCP levels (up to 400 mg/L). Nevertheless, CODPCP/CODTotal 0.648 did negatively affect granular sludge in terms of both morphology and biological activity.