Hamid Bakhshi

About Hamid Bakhshi

Hamid Bakhshi, With an exceptional h-index of 9 and a recent h-index of 8 (since 2020), a distinguished researcher at Babol Noshirvani University of Technology, specializes in the field of Chemical Engineering, Separation Technology, Phase Equilibria.

His recent articles reflect a diverse array of research interests and contributions to the field:

Separation of polyphenolic compounds from Citrus aurantium L. peel by deep eutectic solvents and their recovery using a new DES-based aqueous two-phase system

Hydrophobic deep eutectic solvents characterization and performance for efficient removal of heavy metals from aqueous media

Thermodynamic modeling of gas solubility in Ionic Liquid employed as sweep solvent for methanol synthesis

Cubic plus association (CPA/qCPA) and classical thermodynamic modeling of pharmaceuticals solubility in supercritical carbon dioxide

Aqueous biphasic systems containing sodium L-tartrate dihydrate and PEG, experimental and application of extended thermodynamic models

CFD Study on Influence of O2/CO2, O2/H2O Atmospheres and Shape of Furnace on Methane MILD Combustion

Separation of aromatics from a cyclic-aliphatic hydrocarbon using ethylene glycol and a choline chloride-based deep eutectic solvent

Separation of ethanol azeotropic mixture using deep eutectic solvents in liquid-liquid extraction process

Hamid Bakhshi Information

University

Babol Noshirvani University of Technology

Position

Assistant Professor of Chemical Enngineering

Citations(all)

185

Citations(since 2020)

154

Cited By

75

hIndex(all)

9

hIndex(since 2020)

8

i10Index(all)

8

i10Index(since 2020)

6

Email

University Profile Page

Babol Noshirvani University of Technology

Hamid Bakhshi Skills & Research Interests

Chemical Engineering

Separation Technology

Phase Equilibria

Top articles of Hamid Bakhshi

Separation of polyphenolic compounds from Citrus aurantium L. peel by deep eutectic solvents and their recovery using a new DES-based aqueous two-phase system

Authors

Sanaz Edrisi,Hamid Bakhshi

Journal

Journal of Molecular Liquids

Published Date

2024/4/20

This study aims to investigate the extraction of polyphenolic compounds (PCs) from Citrus aurantium L. peel using Deep Eutectic Solvents (DESs) and ultrasound-assisted extraction (UAE). A screening process evaluated various DESs based on Choline Chloride (ChCl) with polyol, acids, and amides. ChCl-1,4-butanediol performs highest among the tested DESs and the benchmark solvent (70 % ethanol and water). The extraction efficiency, measured by total phenolic content (TPC) using the Folin − Ciocalteu method, was influenced by temperature, time, liquid-to-solid ratio, and water content. Optimal conditions were found at a temperature of 40 °C, extraction time of 30 min, water content of 49.95 %, and 18.97:1 solvent to biomass ratio with a yield of 7.85 mg gallic acid equivalent per gram of peel.Under these conditions, we employed an Aqueous Two-Phase System (ATPS) consisting of salt and DES to …

Hydrophobic deep eutectic solvents characterization and performance for efficient removal of heavy metals from aqueous media

Authors

Elham Majidi,Hamid Bakhshi

Journal

Journal of Water Process Engineering

Published Date

2024/1/1

In this study, we successfully extracted copper, cobalt, and nickel metals from aqueous media using hydrophobic deep eutectic solvents (DESs). The DESs designed for this research consisted of a combination of carboxylic acids, namely Octanoic acid, Nonanoic acid, Decanoic acid, and Dodecanoic acid. Before and after the extraction process, the prepared DESs underwent comprehensive characterization using various analytical techniques. Viscosity measurements demonstrated that the prepared solvents exhibited low viscosity at room temperature, making them well-suited for extraction processes. Moreover, Karl Fischer Titration was employed to accurately determine the water content, which is crucial for evaluating hydrophobicity. We investigated the influence of various parameters on the metal extraction yield, including the initial concentration, temperature, and time. Under optimized conditions, using …

Thermodynamic modeling of gas solubility in Ionic Liquid employed as sweep solvent for methanol synthesis

Authors

Lucas Oliveira Cardoso,Bruno Santos Conceição,Márcio Luis Lyra Paredes,Silvana Mattedi

Journal

Chemical Industry & Chemical Engineering Quarterly

Published Date

2023/4/6

This work aimed at the thermodynamic modeling of gas solubility in ionic liquids (ILs) using the Soave-Redlich-Kwong (SRK), cubic-plus-association (CPA), and perturbed-chain statistical associating fluid theory (PC-SAFT) equations of state. Wherefore, the routines were developed for the parameterization of ILs. Then, the ILs were implemented in the Aspen plus simulator to evaluate the equations of state and explore the phase equilibrium data with the predictive equations and the correlation of the binary interaction parameter. Hence, it was verified the correlation of the density and speed of sound curves presented limitations to correcting the slope of the curves of pure ILs. Nonetheless, the PC-SAFT with the 4C associative scheme demonstrated a better fit for the thermophysical properties. As for the prediction of phase equilibrium for the [EMIM][TfO], the PC-SAFT with the 2B scheme showed a better fit with CO 2, while the CPA with the 2B scheme presented the best result for H 2 S. For [OMIM][NTf 2], the PC-SAFT with the 1A scheme showed better results with CO 2, and the CPA with the 2B scheme showed the lowest deviation with H 2 S.

Cubic plus association (CPA/qCPA) and classical thermodynamic modeling of pharmaceuticals solubility in supercritical carbon dioxide

Authors

Sanaz Edrisi,Hamid Bakhshi

Journal

Journal of Thermal Analysis and Calorimetry

Published Date

2023/7

The processing of pharmaceuticals by supercritical fluids requires the correct assessment and prediction of the solubility of solid compounds in a supercritical fluid. In this work, the solubility of two drugs, namely ibuprofen and salicylic acid, in supercritical carbon dioxide at different temperatures (308–333 K) and pressures up to 35 MPa was regressed using four different thermodynamic models: Soave–Redlich–Kwong equation of state, cubic plus association equation of state, quadrupolar cubic plus association (qCPA), and the regular solution theory tuned by the Flory–Huggins equation. Adjustable parameters of each model were regressed and reported at the studied temperatures. A comparison of the models’ performances showed that CPA and qCPA models with AARD% 1.34 and 2.16 for ibuprofen and 1.63 and 1.65 for salicylic acid are superior to the other applied methods.

Aqueous biphasic systems containing sodium L-tartrate dihydrate and PEG, experimental and application of extended thermodynamic models

Authors

Hamid Bakhshi,Poorya Mobalegholeslam,Seyed Ali Mosavi

Journal

Chemical Thermodynamics and Thermal Analysis

Published Date

2023/6/1

In the current study, liquid-liquid equilibrium data of aqueous two-phase systems (ATPS) containing polyethylene glycol at the different molecular weights (1000, 2000, 6000, and 8000) - sodium L-tartrate dihydrate - water at 298.15 K were obtained. Binodal curves of mentioned systems have been determined and the effect of the molecular weight of polymer on binodal curves, tie-lines, and two-phase region sizes was studied. The results showed that increasing the molecular weight of the polymer enhances the biphasic area of the system. Also, an extended UNIQUAC equation and an extended form of Virial expansion models as new models of activity coefficient were examined to predict the phase equilibria of mentioned systems. The fitted binary interaction parameters of the model were reported. Both investigated models were capable to correlate the VLE and LLE data of the pertinent binary and ternary systems …

CFD Study on Influence of O2/CO2, O2/H2O Atmospheres and Shape of Furnace on Methane MILD Combustion

Authors

Sepideh Biabani,Seyed Reza Shabanian,Hamid Bakhshi

Journal

International Journal of Thermophysics

Published Date

2023/3

In this study, CFD modeling of a combustion system with internal gas circulation technology was carried out for a cylindrical chamber with 0.33 m height and a 0.025 m radius in which feed enters from a nozzle with 0.003 m diameter. The simulation implements the DRM-22 chemical mechanism, modified kє turbulence model, and EDC combustion model. The effect of chamber shape and diameter, nitrogen and carbon dioxide concentration of the input feed in MILD combustion was evaluated. The results indicated that by changing the combustion chamber shape from cylindrical to convergent, the temperature contour is more uniform and CO mass fraction at the output of the combustion chamber decreases. The maximum temperature for 901.4 Nml·min−1 methane and 9148 Nml·min−1 for divergent, cylindrical, and convergent cone chambers are 1820 K, 1663 K, and 1655 K, respectively. By increasing the radius of …

Separation of aromatics from a cyclic-aliphatic hydrocarbon using ethylene glycol and a choline chloride-based deep eutectic solvent

Authors

Mitra Khodabakhshitabar,Hamid Bakhshi,Mostafa Rahimnejad

Journal

Journal of Chemical & Engineering Data

Published Date

2021/9/28

The separation of aromatic and aliphatic hydrocarbons is a challenging process in the petrochemical industry. In this case, liquid–liquid extraction (LLE) by organic solvents has been widely applied in the industry. However, most of the used traditional solvents are toxic and volatile. In the present work, two non-volatile and environmentally friendly solvents were utilized to separate toluene (as an aromatic) from cyclohexane (cyclic aliphatic) in an LLE process. Ternary phase diagrams of cyclohexane–toluene–solvent [ethylene glycol/deep eutectic solvent (DES)] were determined at 298.15 and 308.15 K and atmospheric pressure. The distribution coefficient and selectivity of applied solvents for toluene were determined and compared with those of previously used ionic liquids (ILs). The results show that the prepared choline chloride–glycerol DES in the current work is an efficient solvent for the extraction of toluene …

Separation of ethanol azeotropic mixture using deep eutectic solvents in liquid-liquid extraction process

Authors

Farzad Sharepour,Hamid Bakhshi,Mostafa Rahimnejad

Journal

Journal of Molecular Liquids

Published Date

2021/9/15

In the current study three deep eutectic solvents (DES) including (Malonic acid (1:1) Choline chloride), (Malic acid (1:1) Choline chloride) and (Malic acid, Malonic acid (1:1:1) Choline chloride) were prepared and used for separation of ethanol- hexane azeotropic mixture for the first time. 1H NMR analysis of the solvents confirmed the construction of the DESs. The liquid–liquid equilibrium data of pertinent ternary systems were obtained at 298.15 and 308.15 K and atmospheric pressure. Comparison of the distribution coefficient and selectivity of ethanol at different feed compositions for each tie- line, with the result of the literature revealed that the prepared DESs were more efficient than using ionic liquids and DESs by previous investigators. Both values of distribution coefficient and selectivity were far larger than unity at all concentration ranges. The (Malonic acid (1:1) Choline chloride) DES showed the highest …

Starch-based activated carbon micro-spheres for adsorption of methane with superior performance in ANG technology

Authors

Mohammadreza Tabatabaei Shirazani,Hamid Bakhshi,Alimorad Rashidi,Majid Taghizadeh

Journal

Journal of Environmental Chemical Engineering

Published Date

2020/8/1

In current research work, Nano porous carbon spheres were synthesized for efficient methane (CH4) adsorption. To this end, starch was employed as the starting carbon source which was carbonized at 800 °C. Therefore, in order to activate the carbonized samples, different ratios of KOH were used. The activation process was performed using Carbon: KOH ratios of 1:1, 1:2, and 1:4 at 800 °C. The prepared adsorbents were characterized by different techniques including FESEM, X-ray diffraction, FTIR, and BET. Furthermore, CH4 adsorption experiments were carried out on the prepared adsorbents which yielded very good performance. It was found that increasing the KOH content in the activation process increases both the specific surface area and total pore volume, which in turn enhanced the CH4 uptake. As a result of activation method, the best nano porous sample with Carbon:KOH ratio of 1:4 showed high …

A Modification of UNIQUAC Model for Electrolyte Solutions Based on the Local Composition Concept

Authors

Hamid Bakhshi,Poorya Mobalegholeslam

Journal

Journal of Solution Chemistry

Published Date

2020/12

In the present study, a thermodynamic model is developed to predict the phase equilibrium of electrolyte solutions. In this model the Pitzer–Debye–Hückel equation was used to calculate the long-range contribution of the activity coefficient. To take into account the short-rang part of activity coefficient a new modified UNIQUAC-based model was developed. The model was applied for 18 binary electrolyte solutions. Results show that the model presented reproduces the osmotic coefficients of electrolyte solutions accurately to high concentration levels of salt. Comparison of standard deviation of the model and E-NRTL and E-UNIQUAC-NRF models was performed in the manuscript.

Phase equilibria of binary and ternary polymer solutions using modified UNIQUAC-based local composition model

Authors

Amirhossein Amirsoleymani,Hamid Bakhshi,Seyed Reza Shabanian,Kamyar Movagharnejad

Journal

Journal of Thermal Analysis and Calorimetry

Published Date

2020/11

In the present research, a modification on UNIQUAC activity coefficient model was done based on the local composition concept. The model was applied for binary and ternary systems containing different polymers and protic solvents. The newly modified model was compared with several local composition models such as Wilson, NRTL, UNIQUAC, polymer-NRTL, UNIQUAC-LBY and UNIQUAC-DMD in vapor–liquid. Also, comparison of the model with NRTL, UNIQUAC and UNIQUAC-LBY was done for liquid–liquid equilibrium data. In the presented model, a Freed-FV term was added to activity coefficient expression to consider the free volume effects in the mixture. Also, new surface and volumetric structural parameters were applied for studied alcoholic and aqueous solutions. AARD % of the new model (known as M-UNIQUAC-LBY model) was 1.98% for 28 vapor–liquid equilibrium data set (314 data …

See List of Professors in Hamid Bakhshi University(Babol Noshirvani University of Technology)

Hamid Bakhshi FAQs

What is Hamid Bakhshi's h-index at Babol Noshirvani University of Technology?

The h-index of Hamid Bakhshi has been 8 since 2020 and 9 in total.

What are Hamid Bakhshi's top articles?

The articles with the titles of

Separation of polyphenolic compounds from Citrus aurantium L. peel by deep eutectic solvents and their recovery using a new DES-based aqueous two-phase system

Hydrophobic deep eutectic solvents characterization and performance for efficient removal of heavy metals from aqueous media

Thermodynamic modeling of gas solubility in Ionic Liquid employed as sweep solvent for methanol synthesis

Cubic plus association (CPA/qCPA) and classical thermodynamic modeling of pharmaceuticals solubility in supercritical carbon dioxide

Aqueous biphasic systems containing sodium L-tartrate dihydrate and PEG, experimental and application of extended thermodynamic models

CFD Study on Influence of O2/CO2, O2/H2O Atmospheres and Shape of Furnace on Methane MILD Combustion

Separation of aromatics from a cyclic-aliphatic hydrocarbon using ethylene glycol and a choline chloride-based deep eutectic solvent

Separation of ethanol azeotropic mixture using deep eutectic solvents in liquid-liquid extraction process

...

are the top articles of Hamid Bakhshi at Babol Noshirvani University of Technology.

What are Hamid Bakhshi's research interests?

The research interests of Hamid Bakhshi are: Chemical Engineering, Separation Technology, Phase Equilibria

What is Hamid Bakhshi's total number of citations?

Hamid Bakhshi has 185 citations in total.

    academic-engine

    Useful Links