Fabrication, Characterization, Regeneration and Application of Nanomagnetic Fe3O4@Fish Scale as a Bio-adsorbent for Removal of Methylene Blue

Nima Gholami; Ahmad Dadvand Koohi; Azadeh Ebrahimian Pirbazari

Volume 3, Issue 3 , July 2018, , Pages 219-234

https://doi.org/10.22090/jwent.2018.03.003

Abstract
  The methylene blue (MB) adsorption from aqueous solution was investigated through Fe3O4 nanoparticles loaded on Fish Scale (FS) from fishery biomass. The presence of collagen fibers, apatite crystals and nano-magnetite particles in the structure of nano-magnetic fish scale (MFS) was observed in ...  Read More

Synthesis and Application of Amin-modified Fe3O4@MCM-41 Core-shell Magnetic Mesoporous for Effective Removal of pb2+ ions from Aqueous Solutions and Optimization with Response Surface Methodology

Kamal Alizadeh; Esmail Khaledyan; Yagoub Mansourpanah

Volume 3, Issue 3 , July 2018, , Pages 243-253

https://doi.org/10.22090/jwent.2018.03.005

Abstract
  In this study, a selective, fast and novel magnetic mesoporous silica sorbent Fe3O4@MCM-41-NH2, was synthesized, functionalized and has been used for the removal of Pb+2 ions from aqueous solution. The characteristics of the Fe3O4@MCM-41-NH2 sorbent was investigated by XRD, VSM, SEM, TEM, ...  Read More

On tailored synthesis of nano CaCO3 particles in a colloidal gas aphron system and evaluating their performance with response surface methodology for heavy metals removal from aqueous solutions

Hossein Mohammadifard; Mohammad C. Amiri

Volume 3, Issue 2 , April 2018, , Pages 141-149

https://doi.org/10.22090/jwent.2018.02.005

Abstract
  Heavy metals pollution in the environment is one of the serious problems in the field of water and wastewater management. In this study; calcium carbonate nanoparticles, synthesized by an efficient and novel method, were used as an adsorbent for the removal of lead and iron from aqueous solutions. To ...  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

Acid-thermal Activated Nanobentonite as an Economic Industrial Adsorbent for Malachite Green from Aqueous Solutions. Optimization, Isotherm, and Thermodynamic Studies

Reza Tayebee; vahid Mazruy

Volume 3, Issue 1 , January 2018, , Pages 40-50

https://doi.org/10.22090/jwent.2018.01.004

Abstract
  The limited adsorption capacity of natural clays is a crucial and economic issue which confined their applications in industry as cheap adsorbents to remove toxic contaminants from wastewaters. Here, the adsorption capacity of a natural nano bentonite was enhanced by a simple acid and thermal activation ...  Read More

Application of Sulfur-Modified Magnetic Nanoparticles for Cadmium Removal from Aqueous Solutions

Shahryar Jafarinejad; Mohammad Faraji; Zohreh Norouz; Javad Mokhtari-Aliabad

Volume 3, Issue 1 , January 2018, , Pages 58-69

https://doi.org/10.22090/jwent.2018.01.006

Abstract
  Even at low levels, heavy metals are toxic and can damage living things. They do not break down or decompose and tend to build up in plants, animals, and people causing health concerns. Magnetic nanoparticles (MNPs) can be considered as potential adsorbents for the removal of cadmium (Cd2+) from aqueous ...  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

Kinetic and Isotherm Studies of Cadmium Adsorption on Polypyrrole/Titanium dioxide Nanocomposite

Marjan Tanzifi; Marzieh Kolbadi nezhad; Kianoush Karimipour

Volume 2, Issue 4 , October 2017, , Pages 265-277

https://doi.org/10.22090/jwent.2017.04.004

Abstract
  The present work seeks to investigate the ability of polypyrrole/titanium dioxide nanocomposite to adsorb cadmium ions from aqueous solution. The impact of various experimental conditions, including solution pH, adsorbent dosage, adsorption time and initial concentration on the uptake of cadmium were ...  Read More

Removal of Cobalt Ions from Contaminated Water Using Magnetite Based Nanocomposites: Effects of Various Parameters on the Removal Efficiency

Saeed Tizro; Hadi Baseri

Volume 2, Issue 3 , July 2017, , Pages 174-185

https://doi.org/10.22090/jwent.2017.03.005

Abstract
  Cobalt is one of the most hazardous heavy metals present in the environment. Magnetic based nanoadsorbents were used for removal of Co(II) ions in this work. The characteristics results of FT-IR, XRD, TGA, and FE-SEM show that applied coatings were modified magnetite nanoparticles efficiently. The results ...  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

A comparative study for the electrochemical regeneration of adsorbents loaded with methylene blue

Ines Bouaziz; Morched Hamza; Ridha Abdelhedi; André Savall; Karine Groenen Serrano

Volume 2, Issue 1 , January 2017, , Pages 17-25

https://doi.org/10.7508/jwent.2017.01.003

Abstract
  The electrochemical regeneration of methylene blue-saturated activated carbon, Nyex®1000 and sawdust has been studied and the performances in terms of capacity of adsorbent regeneration have been compared in this work. The adsorption isotherms were investigated. The results showed that the adsorption ...  Read More

Carboxymethyl-β-cyclodextrin Modified Magnetic Nanoparticles for Effective Removal of Arsenic from Drinking Water: Synthesis and Adsorption Studies

Sedigheh Zeinali; Maryam Abdollahi; Samad Sabbaghi

Volume 1, Issue 2 , November 2016, , Pages 104-115

https://doi.org/10.7508/jwent.2016.02.004

Abstract
  The β-cyclodextrin coated magnetic nanoparticles were prepared by the surface modification of Fe3O4 magnetic nanoparticles using carboxymethyl-β-cyclodextrin. Prepared nanoparticles were characterized by X-ray diffraction analysis, transmission electron microscope, Fourier transform infrared ...  Read More

Effective removal of hexavalent mercury from aqueous solution by modified polymeric nanoadsorbent

Lida Rahmanzadeh; Mohsen Ghorbani; Mohsen Jahanshahi

Volume 1, Issue 1 , July 2016, , Pages 1-8

https://doi.org/10.7508/jwent.2016.01.001

Abstract
  Mercury is one of the most toxic metals present in the environment. Adsorption has been proposed among the technologies for mercury adsorbent. The kinetics of adsorption depends on the adsorbent concentration, and the physical and chemical characteristics of adsorbent. In this study we were used a novel ...  Read More