masoumeh kiani - Academia.edu (original) (raw)

Papers by masoumeh kiani

DESALINATION AND WATER TREATMENT, 2021

Ultrasound-supported dispersive solid-phase micro-extraction based on nano sorbent videlicet zinc... more Ultrasound-supported dispersive solid-phase micro-extraction based on nano sorbent videlicet zinc hydroxide nanoparticles loaded on activated carbon (Zn(OH) 2-NPs-AC) in combination with derivative spectrophotometry method for deletion of Rhodamine B dye in industrial wastewater using response surface methodology (RSM) was the focus of the present article. Through the instrumentality of artificial neural network (ANN) and RSM, influential parameters were determined and optimized. Initial dye concentration (mg L-1), and amount of sorbent (mg), pH, and sonication time (min) as effective variables on the deletion of dye were closely examined. Initial RHB concentration of 26.5 mg L-1 , Zn(OH) 2-NPs-AC amount of 0.025 g, ultrasonication time of 4 min, and pH of 4.0 provided us with the perfect removal percentages (>100.0%). The analysis of variance and estimation of the correlation coefficient corroborated the reliability of the equation obtained by RSM considering both the predicted and experimental values of ultrasound-supported deletion of the analytes. The experimental and prognosticated values were in sound conformity. The thriving application of feed-forward neural network with a topology optimized by response surface methodology in the prediction of ultrasound-supported deletion of RHB dye by Zn(OH) 2-NPs-AC in this study, paved the way for further investigations. For ANN modeling, the number of hidden neurons, R 2 , MSE, the number of epochs, and error histograms were decided on. Afterwards, for fitting a model to the experimental data, Temkin, Langmuir, D-R isotherm, and Freundlich models were employed. A proper description of the isotherm data by Langmuir model with the highest adsorption capacity of 76.38 mg g 1 for RHB was reported. The maximum RHB adsorption based on kinetic studies at the desired condition was shown to be obtainable within 4 min of the onset of nearly all experiments. In describing the experimental data of ultrasound-supported deletion of RHB at desired condition procured from RSM, simultaneous use of intraparticle diffusion model and pseudo-second-order rate equation was proven to be advantageous.

DESALINATION AND WATER TREATMENT, 2019

Mn-Fe 2 O 4 nanoparticles loaded on activated carbon were applied for removal of purpurin dye of ... more Mn-Fe 2 O 4 nanoparticles loaded on activated carbon were applied for removal of purpurin dye of solution. The effects of the amount of nanoparticles, pH of the solution, concentration of purpurin, and contact time were studied. The experiments have been designed by response surface methodology. The optimality conditions in the present study were 24 mg L-1 of purpurin concentration, 0.027 g adsorbent mass, pH value of 4.0, and 3.0 min of contact time. The artificial neural network model was employed for data prediction with Levenberg-Marquardt algorithm, purelin or a linear transfer function at output layer, and tansig or a tangent sigmoid transfer function in the hidden layer with 15 neurons. Remarkably, the experimental data and the pseudo-second-order kinetics fitted well. The isotherm analysis revealed that the equilibrium data were well fitted to the Langmuir isotherm model with the highest adsorption capacity of 60 mg g-1 of the adsorbent for removal of purpurin.

Russian Journal of Physical Chemistry A

仲景六经辨证开创了中医辨证论治之先河，邪人少阴，损及心肾，心肾虚衰，水火失调，会表现出一系列病理特点．这些病理表现与现代。肾脏病关系密切。本文根据少阴病证理论。探寻辨证治疗临床肾脏疾病的方法。

High Temperatures-High Pressures, 2020

In this study, the density of nanoparticles, nanofluids containing a base fluid and nanofluids co... more In this study, the density of nanoparticles, nanofluids containing a base fluid and nanofluids containing a mixture of two base fluids in the compressive range of 0.1-45 MPa and a temperature range of 273-363 K were calculated and predicted. The equation of state used in this work is the Ihm-Sang-Mason equation of state. According to the quantum properties of nanoparticles, a part of quantum correction was used to calculate the second virial coefficient. The potential function of Morse three-parameters was used which is more flexible than the usual potential functions of two-parameters such as Lenard Jones 12-6.

Journal of Molecular Liquids, 2017

A simplified procedure with minimum input information is presented to predict an analytical equat... more A simplified procedure with minimum input information is presented to predict an analytical equation of state for crystallizable polymer melts from enthalpy of fusion and crystalline density as scaling constants. The second virial coefficients are calculated from a two-parameter corresponding states correlation obtained from two constants which are heat of fusion, ΔH fus , and the molar density at the crystalline point, ρ crys. This new correlation has been applied to the Ihm-Song-Mason equation of state to predict the volumetric behavior of some polymer melts at compressed state with temperature range from 311.5 K to 557.25 K and pressures up to 200 MPa. This equation of state is applied to seven crystallizable polymers: Polyvinyl methyl ether (PVME), Polystyrene (PS), Polyvinyl chloride (PVC), Polyvinylidene fluoride (PVDF), Polyethylene (PE), Isotactic polypropylene (iPP) and Polybutene-1 (Pb-1). For 924 data points, the overall average absolute deviation (AAD) was found to be 0.47%.

Journal of Molecular Liquids, 2014

ABSTRACT The main aim of the present study is to modify the attractive part of van der Waals-type... more ABSTRACT The main aim of the present study is to modify the attractive part of van der Waals-type EOS to model the volumetric ionic liquids and their mixtures. The present study uses the Carnahan-Starling (CS) repulsion term and also focuses on introducing a variable parameter in the attractive term of modified vdW-type EOS. Investigation of the results obtained revealed that this variable is a function of temperature. Our results also show that employment of CS repulsion term together with an appropriately chosen exponent in the attractive term of EOS will greatly improve the accuracies of the calculated densities of various ionic liquids. The average absolute deviation (AAD) of the calculated densities from the experimental ones for 848 data points of pure ionic liquids was found to be 0.36. Further, in the case of mixtures, for 1014 data points the AAD was 0.20.

Korean Journal of Chemical Engineering, 2015

In our previous work, we modified the Tao-Mason EOS [1] to predict the volumetric properties of p... more In our previous work, we modified the Tao-Mason EOS [1] to predict the volumetric properties of pure refrigerants [2]. In the present study, we have successfully extended the modified Tao-Mason EOS to refrigerant mixtures. The second virial coefficient, B 2 (T), and the temperature-dependent correction factor α(T) and van der Waals co-volume b(T) were calculated from a two-parameter corresponding-states correlation along with the enthalpy of vaporization and the molar density, both at the normal boiling point. Then the cross parameters B 12 (T), α 12 (T), and b 12 (T), were determined with the help of simple combining rules. The constructed Tao-Mason EOS was employed to predict the densities and vapor pressures of several HFC, hydrocarbons and HFO mixtures. The calculated results were compared with literature data. The overall agreement between our results and literature values is remarkable.

Supramolecular Chemistry, 2013

The grafting of 4-amino benzo-9-crown-3 ether to poly (styrene-alt-maleic anhydride) has been des... more The grafting of 4-amino benzo-9-crown-3 ether to poly (styrene-alt-maleic anhydride) has been described. The covalent grafting of crown ether has led to a considerable increase in the solubility of polymer in organic solvents such as dimethyl sulphoxide, dimethylformamide and tetrahydrofuran. The highest solubility was attained in DMF and DMSO. The covalently bonded 4-benzo-9-crown-3 ether allowed the hosting of Li+. The covalently grafted crown ether to polymer was identified by infrared spectroscopy and thermogravimetric analysis methods.

Physics and Chemistry of Liquids, 2012

A statistically-based equation of state (EOS) proposed by Tao and Mason was applied to four light... more A statistically-based equation of state (EOS) proposed by Tao and Mason was applied to four light fluids including He, Ne, H2 and CH4. The best intermolecular pair potentials were taken to evaluate the second virial coefficients of four aforecited systems. For CH4 and Ne the first quantum correction, and for He and H2, up to the second quantum correction were

Journal of Molecular Liquids, 2011

Journal of Industrial and Engineering Chemistry, 2011

The present work evaluates the performance of a molecular-based equation of state in predicting t... more The present work evaluates the performance of a molecular-based equation of state in predicting thermodynamic properties of several fluids in a very wide range of temperatures encompassing 100K&amp;lt;T&amp;lt;1100K and pressures ranging from zero to 3200bar. The theoretical equation of state (EOS) is that of Tao–Mason (TM) which is based on statistical mechanical perturbation theory. The 21 fluids including: argon (Ar),

International Journal of Refrigeration, 2011

The present work addresses a simplified procedure for the calculation of certain parameters in th... more The present work addresses a simplified procedure for the calculation of certain parameters in the Tao-Mason (TM) equation of state needed to estimate thermodynamic properties of 12 ozoneefriendly refrigerants fluids. The calculations cover wide ranges extending from the dilute vapor or gas to highly compressed liquid and supercritical region. The theoretical equation of state (EOS) is that of Tao and Mason which is based on statistical mechanical perturbation theory. The novelty of the present work is that we use two scaling constants, the enthalpy of vaporization and the molar density, both evaluated at the normal boiling temperature. This approach contrasts with the original procedure that employs five scaling constants including the critical temperature, the critical pressure, the Boyle temperature, the Boyle pressure and the acentric factor for calculating three parameters second virial coefficient and temperature-dependent parameters. The modified TM EOS predicts thermodynamic properties with equal or better accuracy than those emerging from the original TM EOS.

Colloid and Polymer Science, 2011

This paper addresses a method for predicting the participating constants in equation of state (EO... more This paper addresses a method for predicting the participating constants in equation of state (EOS) for compressed polymeric fluids using two scaling constants, the surface tension γ g and the molar density ρ g, both at the glass transition point. The theoretical EOS undertaken is the one attributed to Tao and Mason. The second virial coefficients are calculated from a

Nano-materials are considered as suitable heterogeneous catalysts for many organic reactions. Her... more Nano-materials are considered as suitable heterogeneous catalysts for many organic reactions. Herein oxidized carbon nanotube (SWCNTs-COOH) has been reported as a heterogeneous catalyst, for protection of carbonyl groups as hydrazones in EtOH at 80°C. The reactions proceed smoothly with good to excellent yields, and the SWCNTs-COOH used can be recycled.