Original Research Paper
Adsorption of organic compounds on the Fe3O4 nanoparticles for forestalling fouling in membrane bioreactor

Sedigeh Sabalanvand; Hossein Hazrati; abbas jafarizad; Yoones Jafarzadeh

Volume 4, Issue 2 , April 2019, Pages 88-96

https://doi.org/10.22090/jwent.2019.02.001

Abstract
  Many studies have been done to reduce the membrane fouling and to increase the quality of the effluent from membrane bioreactor (MBR). One of the most important researches in this filed is the use of adsorbents and nanoparticles in the biological system. In this study, the effects of Fe3O4 nanoparticles ...  Read More

Original Research Paper
Multiwalled Carbon Nanotubes/Polyethersulfone Mixed Matrix Nanofiltration Membrane for the removal of cobalt ion

Alireza Nouri; Ramin Yavari; Mohammad Ali Aroon; Taher Yousefi

Volume 4, Issue 2 , April 2019, Pages 97-108

https://doi.org/10.22090/jwent.2019.02.002

Abstract
  In the present research work, the mixed matrix membranes (MMMs) containing various amount of polyethersulfone (PES) and functionalized multi-walled carbon nanotubes (fMWCNTs) were fabricated and used to investigate the removal of cobalt ions from wastewater by nanofiltration process. Pristine MWCNTs ...  Read More

Original Research Paper
Protection of mild steel in 3 M HCl solution by Areca root extract: development of green and sustainable corrosion inhibitor

Narasimha Raghavendra; Anjali S. Bhinge; Pooja J Ganiger

Volume 4, Issue 2 , April 2019, Pages 109-118

https://doi.org/10.22090/jwent.2019.02.003

Abstract
  The corrosion inhibition effect of Areca root extract on the mild steel (MS) surface in the 3 M HCl solution was examined by gasometric, colorimetric, Tafel plot, impedance and atomic absorption spectroscopy techniques. Gasometric studies show that, the extract behaves as green corrosion inhibitor in ...  Read More

Original Research Paper
Nano LTA Zeolite in Water Softening Process: Synthesis, Characterization, Kinetic studies and process optimization by Response Surface Methodology (RSM)

Elmira Ghadamnan; Seyed Reza Nabavi; Mahmoud Abbasi

Volume 4, Issue 2 , April 2019, Pages 119-138

https://doi.org/10.22090/jwent.2019.02.004

Abstract
  In the present study, nano zeolite A (LTA) was synthesized by the alkaline fusion method without adding an organic template. Effect of temperature and aging time were studied on the crystallinity and morphology of the final product. The synthesized LTA was characterized by scanning electron microscopy ...  Read More

Original Research Paper
Investigation of Photocatalytic Degradation of Clindamycin by TiO2

Azam Gholami; Mahmood Hajiani; Mohammad Hossein Sayadi Anari

Volume 4, Issue 2 , April 2019, Pages 139-146

https://doi.org/10.22090/jwent.2019.02.005

Abstract
  Contaminants of emerging concern or simply emerging contaminants have been considered as a critical environmental issue in recent decades. These compounds have not routinely controlled and monitored; therefore they have posed risk to health of human and environment. Drugs are considered as one of the ...  Read More

Original Research Paper
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

Original Research Paper
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

Original Research Paper
Calculation Study of Conversion Nitrate Ions to N2 and O2 by Zinc Oxide Nano-Cage (Zn12O12-NC)

Leila Mahdavian

Volume 4, Issue 2 , April 2019, Pages 167-173

https://doi.org/10.22090/jwent.2019.02.008

Abstract
  The aim of this study is to investigate the performance of zinc oxide nano-cages (Zn12O12-NC) to detect and reduce nitrate (NO3-) ions from aqueous media and convert them to oxygen and nitrogen gases by the density functional theory (DFT) method on a B3LYP level with basis set of 6-31+G*. Due to the ...  Read More