Study of the Adsorption of Amido Black 10B Dye from Aqueous Solution Using Polyaniline Nano-adsorbent: Kinetic and Isotherm Studies

Marjan Tanzifi; Mohsen Mansouri; Maryam Heidarzadeh; Kobra Gheibi

Volume 1, Issue 2 , November 2016, , Pages 124-134

https://doi.org/10.7508/jwent.2016.02.006

Abstract
  In the present study, adsorptive properties of Polyaniline (PAn) were investigated for Amido Black 10B dye in aqueous solution. Different variables, including adsorption time, adsorbent dosage, solution pH and initial dye concentration were changed, and their effects on dye adsorption onto PAn nano-adsorbent ...  Read More

The adsorption of sulfur dioxide and ozone molecules on boron nitride nanotubes: A DFT study

Amirali Abbasi

Volume 4, Issue 2 , April 2019, , Pages 147-156

https://doi.org/10.22090/jwent.2019.02.006

Abstract
  Density functional theory calculations were carried out to investigate the adsorption behaviors and electronic structures of SO2 and O3 molecules on the pristine boron nitride nanotubes. The structural and electronic properties of the studied systems were investigated in view of the adsorption energies, ...  Read More

Modification of natural zeolite for effective removal of Cd(II) from wastewater

Taher Yousefi; Hamid Raza Moazami; Hamid Reza Mahmudian; Meisam Torab-Mostaedi; Mohammad Ali Moosavian

Volume 3, Issue 2 , April 2018, , Pages 150-156

https://doi.org/10.22090/jwent.2018.02.006

Abstract
  In the current research work the Iranian natural zeolite (clinoptililite) was modified with Cobalt Hexacyanoferrate nanopatricles. The natural and Cobalt Hexacyanoferrat modifed zeolites were characterized by FTIR and SEM techniques  and were empolyed as an adsorbent for removal Cd(II) ions from ...  Read More

Treatment of Petrochemical wastewater by Modified electro-Fenton Method with Nano Porous Aluminum Electrode

Maryam Adimi; Maziar mohammadpour; Hassan Fathinejadjirandehi

Volume 2, Issue 3 , July 2017, , Pages 186-194

https://doi.org/10.22090/jwent.2017.03.006

Abstract
  This research reported a study on COD removal from petrochemical wastewater (ml/l) by the electro-Fenton process via the effects of different parameters such as reaction time, current density, pH, H2O2/Fe2+ molar ratio, and volume fraction of H2O2. For this purpose, first, the Nanopores on the aluminum ...  Read More

Removing Sodium Dodecyl Benzene Sulfonate Using a Hybrid Electrocoagulation/Flotation and Photocatalytic System

Mahta Nazari; Bita Ayati

Volume 4, Issue 3 , July 2019, , Pages 236-243

https://doi.org/10.22090/jwent.2019.03.006

Abstract
  This study was conducted to evaluate sodium dodecyl benzene sulfonate removal using electrocoagulation/flotation and photocatalytic nano-TiO2 slurry systems. The parameters which are effective on the surfactant removal were investigated and optimized. Electrocoagulation/flotation system included meshed ...  Read More

Enhanced Photocatalytic Performance of TiO2 by β-Cyclodextrin for the Degradation of Organic Dyes

Asadollah Mohammadi; Seyed Hossein Mousavi

Volume 3, Issue 3 , July 2018, , Pages 254-264

https://doi.org/10.22090/jwent.2018.03.006

Abstract
  In this work, an efficient photocatalyst based on β-cyclodextrin-glycine-modified TiO2 nanoparticles (TiO2-Gly-βCD NPs) was successfully synthesized. The photocatalytic activity of the prepared TiO2-Gly-βCD was tested on the degradation of methylene blue (MB) and methyl orange ...  Read More

Photocatalytic Treatment of Synthetic Wastewater Containing 2,4 dichlorophenol by Ternary MWCNTs /Co-TiO2 Nanocomposite Under Visible Light

Shahryar Nazarpour Laghani; Azadeh Ebrahimian Pirbazari

Volume 2, Issue 4 , October 2017, , Pages 290-301

https://doi.org/10.22090/jwent.2017.04.006

Abstract
  In this work, multi-walled carbon nanotubes (MWCNTs)/Co-TiO2 nanocomposites were synthesized and investigated for photocatalytic degradation of 2,4-dichlorophenol (2,4-DCP) under visible light. Characterization of photocatalysts was done by means of XRD, FT-IR and SEM/EDX techniques. Obtained results ...  Read More

Investigation and Comparison of Fluoride Adsorption Behavior on a Hybrid Material Containing Zirconium Dioxide Coated on γ-Alumina (60 and 90) and Their Initial Precursor in Aqueous Solution

Ramin Yavari

Volume 4, Issue 4 , October 2019, , Pages 321-332

https://doi.org/10.22090/jwent.2019.04.006

Abstract
  In the present research work, zirconium oxide coated on activated alumina (Al2O3-90, Al2O3-60) were synthesized and used along with their pristine materials to investigate and compare the adsorption behavior of fluoride on them. These material was characterized by BET and X-ray diffraction analyzer. ...  Read More

Green Biosynthesis of Palladium Oxide Nanoparticles Using Dictyota indica Seaweed and its application for adsorption

Atiyeh Yazdani; Mohammad Sayadi; Ava Heidari

Volume 3, Issue 4 , October 2018, , Pages 337-347

https://doi.org/10.22090/jwent.2018.04.006

Abstract
  The green synthesis of palladium oxide nanoparticles using Dictyota indica seaweed extract was investigated. Dictyotales is a large order in the brown algae (class Phaeophyceae). The color of the reaction mixture changed which indicated the formation of palladium oxide nanoparticles. UV-Visible, SEM, ...  Read More

Comparison of Kaolin and chemical source for preparation of Nano pore NaA Zeolite membranes

Mansoor Kazemimoghadam

Volume 1, Issue 1 , July 2016, , Pages 45-53

https://doi.org/10.7508/jwent.2016.01.006

Abstract
  Zeolite membranes have uniform and nano-sized pores, and they separate molecules based on differences in the molecules size and diffusion properties. Different routes used to prepare zeolite composite membranes include growing zeolite layers from gels on porous supports. Our approach to membrane synthesis ...  Read More

Van der Waals corrected DFT study on the adsorption behaviors of TiO2 anatase nanoparticles as potential molecule sensor for thiophene detection

Amirali Abbasi; Jaber Jahanbin Sardroodi

Volume 2, Issue 1 , January 2017, , Pages 52-65

https://doi.org/10.7508/jwent.2017.01.007

Abstract
  Density functional theory investigations were conducted in order to study the effects of the adsorption of thiophene on the structural and electronic properties of TiO2 anatase nanoparticles. The ability of pristine and N-doped TiO2 anatase nanoparticles to recognize toxic thiophene was surveyed in detail. ...  Read More

Template assisted Synthesis of tin oxide nanostructures electrodes by using nanoporous alumina template for detection of toxic chemicals in water such as hydrazine

Ghaffar Torkashvand; Norodin Mirnia; Ali Bahari

Volume 4, Issue 1 , January 2019, , Pages 67-74

https://doi.org/10.22090/jwent.2019.01.007

Abstract
  Template-assist method is one of the most important techniques for synthesize nanostructures , because of more parameters that can be change to fabricate different nanostructures with desired nano-scale features. self- ordered anodic alumina is one of the most important honeycomb structure that can be ...  Read More

Study of Adsorption of H2 and CO2 on Distorted Structure of MOF-5 Framework; A Comprehensive DFT Study

Mehrzad Arjmandi; Majid Peyravi; Mahdi Pourafshari Chenar; Mohsen Jahanshahi; Abolfazl Arjmandi

Volume 3, Issue 1 , January 2018, , Pages 70-80

https://doi.org/10.22090/jwent.2018.01.007

Abstract
  To investigate the adsorption property of H2 and CO2 on the organic ligand of C-MOF-5 (H2BDC) and T-MOF-5 (ZnO-doped H2BDC (ZnO-H2BDC)), Density functional theory (DFT) method was performed. First, the adsorption of ZnO on H2BDC resulted in examining binding energies, the charge transfer, density of ...  Read More

Methylene Blue Removal Using Surface-Modified TiO2 Nanoparticles: A Comparative Study on Adsorption and Photocatalytic Degradation

Asadollah Mohammadi; Ali Aliakbarzadeh Karimi

Volume 2, Issue 2 , April 2017, , Pages 118-128

https://doi.org/10.22090/jwent.2017.02.007

Abstract
  This study describes the adsorption and photocatalytic removal of  methylene blue (MB) from aqueous solution by surface-modified TiO2 nanoparticles under ultraviolet irradiation in a batch system. The 5-sulfosalicylic acid grafted TiO2 (5-SA-TiO2) as a photocatalyst was characterized by means of ...  Read More

Silver Doped TiO2 Nanoparticles: Preparation, Characterization and Efficient Degradation of 2,4-dichlorophenol Under Visible Light

Zahra Sarteep; Azadeh Ebrahimian Pirbazari; Mohammad Ali Aroon

Volume 1, Issue 2 , November 2016, , Pages 135-144

https://doi.org/10.7508/jwent.2016.02.007

Abstract
  Hydrothermally synthesized TiO2 nanoparticles containing different amounts of silver were characterized by X-Ray diffraction (XRD), Fourier transform infrared (FT-IR) and scanning electron microscopy equipped with energy dispersive X-ray microanalysis (SEM/EDX) techniques. XRD results showed prepared ...  Read More

Optimization of process variables by response surface methodology for methylene blue dye removal using Spruce sawdust/MgO nano-biocomposite

Seyed Hassan Sharifi; Hassan Shoja

Volume 3, Issue 2 , April 2018, , Pages 157-172

https://doi.org/10.22090/jwent.2018.02.007

Abstract
  The purpose of this investigation is to study the influence of Spruce sawdust (SD) coated by magnesium oxide (MgO) nanoparticles in the removing of methylene blue (MB) from an aqueous solution which is in a batch system. The adsorbent was characterized by FTIR, FE-SEM, BET and XRD analysis. The high ...  Read More

Removal of Lead (II) and cadmium from the agricultural water by Zeolite N.P./PEG/GO composite

Susan Samadi; Mostafa Mirzaie Shalmani; Amirabbas Zakaria

Volume 4, Issue 2 , April 2019, , Pages 157-166

https://doi.org/10.22090/jwent.2019.02.007

Abstract
  The zeolite N.P./PEG/GO composite was synthesized by hydrothermal assisted sol-gel method to be used as Pb2+ and Cd2+ ions nano-adsorbent from the agricultural water. The FT-IR spectrum confirmed the expected microstructure of synthesized adsorbent. The SEM revealed the formation of zeolite nanoparticles ...  Read More

An investigation of Highly Turbulent Flow Heat Transfer Enhancement through Modified Twisted Tape inserts and NanoFluids

Yousef Vazifeshenas; Reza Yousefi; Esmaeil Rahimi

Volume 2, Issue 3 , July 2017, , Pages 195-205

https://doi.org/10.22090/jwent.2017.03.007

Abstract
  Power plants are of great influential industries to the environment which could be studied in many ways. Since the optimum equipment would consume less fuel, the issue is mainly interested to those who are concerned about the environmental effects. Amongst various methods, utilizing twisted tapes inserts ...  Read More

Preparation a multi-walled carbon nanotubes-carbon paste electrode based on a sulfanyl phenyl Schiff’s base for selective determination of mercury(II) in environmental water samples

Kamal Alizadeh; Ziba Yaghouby; Azim Shams

Volume 4, Issue 3 , July 2019, , Pages 244-250

https://doi.org/10.22090/jwent.2019.03.007

Abstract
  The electrochemical property of a recently synthesized ligand, 3-((3-mercaptophenyl) aminomethyl)benzene-1,2-diol has been investigated with construction of a modified carbon paste electrode to find out of mercury ions in real samples. To modify the electrode, paraffin oil and multi-walled carbon nanotubes ...  Read More

Removal of Pb(II) by Modified Natural Adsorbent; Thermodynamics and Kinetics Studies

Taher Yousefi; Mohammad Abas Mohsen; Hamid Reza Mahmudian; Meisam Torab-Mostaeidi; Mohammad Ali Moosavian; Hassan Aghayan

Volume 3, Issue 3 , July 2018, , Pages 265-272

https://doi.org/10.22090/jwent.2018.03.007

Abstract
  In the current work, the natural zeolite was modified with cobalt hexacyanoferrate and employed for adsorbent of Pb(II) ions from aqueous solution. The modification was approved by XRD and FTIR techniques. The Pb(II) adsorption capacity enhanced by 1.8 times from 60 mg/g (natural zeolite) to 100 mg/g ...  Read More

Graphene Quantum Dots/Eggshell Membrane Composite as a Nano-sorbent for Preconcentration and Determination of Organophosphorus Pesticides by High-Performance Liquid Chromatography

Vahideh Abdollahi; Habib Razmi

Volume 2, Issue 4 , October 2017, , Pages 302-310

https://doi.org/10.22090/jwent.2017.04.007

Abstract
  In this study graphene quantum dots/eggshell membrane nanocomposite (GQDS/ESM) is prepared and used as an efficient solid-phase extraction (SPE) sorbent for preconcentration of organophosphorus pesticides (OPPs) from aqueous solutions. The retained analytes on the sorbent are stripped by acetonitrile ...  Read More

Sonocatalyst efficiency of palladium-graphene oxide nanocomposite for ibuprofen degradation from aqueous solution

Atiyeh Yazdani; Mohammad Sayadi; ava Heidari

Volume 4, Issue 4 , October 2019, , Pages 333-342

https://doi.org/10.22090/jwent.2019.04.007

Abstract
  Worldwide studies on contamination levels of anti-inflammatory drugs such as ibuprofen (IBF) show that their concentration in water bodies is increasing. Graphene oxide/palladium nanoparticle (Pd NPs-GO) was synthesized via a simple solvothermal method. The characteristics of the as-prepared samples ...  Read More

GO/C2S Nanocomposite as an Environmentally-Friendly Material for sustainable Development of Cement Structure

Ali Bahari; Hussein Salmani

Volume 3, Issue 4 , October 2018, , Pages 348-354

https://doi.org/10.22090/jwent.2018.04.007

Abstract
  In the present work, Graphene Oxide (GO) nano particles with 0.1, 0.2, 0.4 and 0.8 weight percentages (wt.% ), synthesized by Hummer method entered into the Di-Calcium Silicate (C2S) matrix (synthesized with using Pechini method and their nano structural and mechanical characteristics studied by XRD ...  Read More

TiO2/Gold nanocomposite as an extremely sensitive molecule sensor for NO2 detection: A DFT study

Amirali Abbasi; Jaber Jahanbin Sardroodi; Alireza Rastkar Ebrahimzadeh

Volume 1, Issue 1 , July 2016, , Pages 55-62

https://doi.org/10.7508/jwent.2016.01.007

Abstract
  First-principles calculations within density functional theory (DFT) have been performed to investigate the interactions of NO2 molecules with TiO2/Gold nanocomposites in order to completely exploit the adsorption properties of these nanostructures. Given the need to further comprehend the behavior of ...  Read More

Study on UV-visible for detection of biosynthesis of silver nanoparticles by oyster mushroom’s extracts

Mustafa Nadhim Owaid; Sajid Salahuddin Saleem Al-Saeedi; Idham Ali Abed

Volume 2, Issue 1 , January 2017, , Pages 66-70

https://doi.org/10.7508/jwent.2017.01.008

Abstract
  Twelve extracts belong to four species of edible oyster mushrooms were screened for their chemical value (viz. proteins, carbohydrates and phenols were assessed) and their capability to biosynthesize silver nanoparticles (AgNPs). In limitative conditions, dark incubation and temperature 25 °C, three ...  Read More