Arsenic (III) Adsorption Using Palladium Nanoparticles from Aqueous Solution

Farzaneh Arsiya; Mohammad Sayadi; Sara Sobhani

Volume 2, Issue 3 , July 2017, , Pages 166-173

https://doi.org/10.22090/jwent.2017.03.004

Abstract
  The presence of Arsenic in drinking water is the greatest threat to health effects especially in water. The purpose of this study is application of green palladium nanoparticles for removal of trivalent Arsenic from aqueous solutions and also the impact of some factors such as retention time, pH, concentration ...  Read More

Polysulfone nanocomposite membrane embedded by silanized nanodiamond for removal of humic acid from water

Atefeh Tizchang; Yoones Jafarzadeh; Reza Yegani; Elham Shokri

Volume 4, Issue 3 , July 2019, , Pages 213-226

https://doi.org/10.22090/jwent.2019.03.004

Abstract
  In this study, polysulfone (PSf) nanocomposite membranes embedded with functionalized nanodiamond (ND) were prepared via Non-Solvent Induced Phase Separation (NIPS) method. ND nanoparticles were silanized by using the esterification reaction of hydrolyzed vinyltrimethoxysilane (VTS) in alcoholic solution ...  Read More

The flexible route for the electrosynthesis of visible light active CdxZn1-xOnanostructures by sequential anodic dissolution of metallic electrodes

Saied Saeed Hosseiny Davarani; Hamid Reza Moazami; Taher Yousefi; Masoud Abrari

Volume 3, Issue 3 , July 2018, , Pages 235-242

https://doi.org/10.22090/jwent.2018.03.004

Abstract
  A flexible route for the electrosynthesis of visible light active CdxZn1-xO nanostructures has been proposed. Various nanostructures were prepared by anodic dissolution in 0.1M Me4NCl by using an applied potential of 15V for 30min. The prepared nanostructures were characterized by diffuse reflectance ...  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

Effect of dosage and particle size of natural zeolite on the survival of Escherichia coli in soil

Ali Akbar Safari Sinegani; Omid Noroozi

Volume 4, Issue 4 , October 2019, , Pages 296-307

https://doi.org/10.22090/jwent.2019.04.004

Abstract
  Survival of enteropathogenic bacteria in soil is a key factor to control waterborne diseases. The significance of zeolite nanoparticles in comparison with natural size particles on the survival of Escherichia coli in soil was studied in sterile and unsterile conditions. The experimental mixtures prepared ...  Read More

Preparation, Optimization and Characterization of CuInS2 quantum dots by a D-optimal Design

Mahzad Mirzaei; Reza Khanbabaie; Mohsen Jahanshahi; Ghasem Najafpour Darzi

Volume 3, Issue 4 , October 2018, , Pages 311-320

https://doi.org/10.22090/jwent.2018.04.004

Abstract
  Recently, safety concerns over the handling of nanomaterials have become an important issue. The aim of the present study was to optimize the key parameters in the hydrothermal synthesis of CuInS2 quantum dots (QDs) as a non-toxic alternative to the cadmium-based QDs, that historically had dominated ...  Read More

Photo-Catalytic Degradation of Methylene Blue by ZnO/SnO2 Nanocomposite

Samad Sabbaghi; Fateme Doraghi

Volume 1, Issue 1 , July 2016, , Pages 27-34

https://doi.org/10.7508/jwent.2016.01.004

Abstract
  In this study, considering the importance of protecting the environment and preventing the pollution caused by industrial plants, a nanocomposite each component thereof is capable of removing the desired combination to solve this problem has been produced. To achieve this goal, ZnO/SnO2nanocomposite ...  Read More

Investigation of Conversion CO2 to Fuel by TiN nanotube-Cu nanoparticle

Leila Mahdavian

Volume 2, Issue 1 , January 2017, , Pages 34-38

https://doi.org/10.7508/jwent.2017.01.005

Abstract
  The CO and CO2 effects are global warming, acid rain, limit visibility, decreases UV radiation; yellow/black color over cities and so on. In this study, convention of CO2 and H2O to CH4 and O2 near TiN- nanotube with Cu-nanoparticle calculated by Density Functional Theory (DFT) methods. We have studied ...  Read More

Investigating the Influence of Doping Graphene with Silicon and Germanium on the Adsorption of Silver (I)

Mohammad Reza Jalali Sarvestani; Roya Ahmadi

Volume 4, Issue 1 , January 2019, , Pages 48-59

https://doi.org/10.22090/jwent.2019.01.005

Abstract
  In this study, the impact of doping graphene with silicon and germanium on the adsorption of Ag+ was evaluated by density functional theory. At the outset, the structures of silver, adsorbents and their derived products at ten different configurations were optimized geometrically. Then, IR and frontier ...  Read More

Genomic Effect of Silver Nanoparticles in Staphylococcus aureus Bacteria

Vida Alizadeh; Bahram Golestani Eimani; Fariba Amjady

Volume 3, Issue 1 , January 2018, , Pages 51-57

https://doi.org/10.22090/jwent.2018.01.005

Abstract
  Background and objectives: Drug resistance in bacteria is one of the important problems in the antibacterial field. Therefore, new drugs and therapeutic approaches are required to eliminate bacteria using different and novel mechanisms. Among these, the silver nanoparticles have been proposed as a substance ...  Read More

Investigations on Green Preparation of Heavy Metal Saponin Complexes

Maher Abed el Aziz; Aziza Ashour; Hewaida Madbouly; Al Sadek Melad; Khald El Kerikshi

Volume 2, Issue 2 , April 2017, , Pages 103-111

https://doi.org/10.22090/jwent.2017.02.005

Abstract
  Green preparation of heavy metal saponin complexes has been successfully optimized by direct combination between crude extract of Olea Europaea and Citrus Aurantium with divalent heavy metals, Pb2+ and Cd2+. The main operating factors affecting preparation process were investigated and evaluated in terms ...  Read More

Evaluation of Tap Water Based on Sensor Array and Conducting Nanostructured Polymers

Eduarda Regina Carvalho; Wilson Tadeu Lopes da Silva

Volume 1, Issue 2 , November 2016, , Pages 116-123

https://doi.org/10.7508/jwent.2016.02.005

Abstract
  A sensor system, adapted to evaluate tap water, was fabricated and tested. Interdigitated  gold-coated microelectrodes were covered with various conducting polymers, single or mixed, under several different conditions. Polymer films were laid down by a  self-assembly technique and their impedance ...  Read More

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

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

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

Ultrasound assisted electro-Fenton process including Fe-ZSM-5 nanocatalyst for degradation of Phenazopyridine

Mohammad Rostamizadeh; Soorena Gharibian; Samira Rahimi

Volume 4, Issue 3 , July 2019, , Pages 227-235

https://doi.org/10.22090/jwent.2019.03.005

Abstract
  Pharmaceutical wastewaters have several negative effects on human health. This study reports heterogeneous and ultrasound assisted electro Fenton (HSEF) for efficient degradation of Phenazopyridine (PHP). The high silica zeolite socony mobil–5 (ZSM-5) nanocatalyst is synthesized by hydrothermal ...  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

Synthesis of Bare and Four Different Polymer- Stabilized Zero-Valent Iron Nanoparticles and Their Efficiency on Hexavalent Chromium Removal from Aqueous Solutions

Mohammad Taghi Kouhiyan Afzal; Ahmad Farrokhian Firouzi; Mehdi Taghavi

Volume 2, Issue 4 , October 2017, , Pages 278-289

https://doi.org/10.22090/jwent.2017.04.005

Abstract
  Zero-valent iron particles at the nanoscale are proposed to be one of the important reductants of Cr(VI), transforming the same into nontoxic Cr(III). In this study zero valent iron nanoparticles(ZVINs) were synthesized and characterized for hexavalent chromium removal from aqueous solutions. Five different ...  Read More

Application of wet chemical surface functionalization method in preparation of anti-fouling polysulfone microporous membrane for water treatment

Milad Fonouni; Habib Etemadi; Reza Yegani; Masoumeh Safary Dehnavi; Naeime Jodeiry

Volume 4, Issue 4 , October 2019, , Pages 308-320

https://doi.org/10.22090/jwent.2019.04.005

Abstract
  In this work, KClO3, K2Cr2O7 and KMnO4, dissolved in sulfuric acid, were used to functionalize microporous Polysulfone (PSf) membranes; fabricated by phase inversion method. The optimum concentrations of oxidizing agent and sulfuric acid and membrane immersion times were determined. FTIR results revealed ...  Read More

Fe3O4/AC nanocomposite as a novel nano adsorbent for effective removal of cationic dye: Process optimization based on Taguchi design method, kinetics, equilibrium and thermodynamics

Maryam Ghasemi; Somaye Mashhadi; Javad Azimi-Amin

Volume 3, Issue 4 , October 2018, , Pages 321-336

https://doi.org/10.22090/jwent.2018.04.005

Abstract
  In this study, we have synthesized a new Fe3O4/AC nanocomposite using low cost adsorbent by microwave assisted in situ co-precipitation technique that was used as an effective adsorbent for the removal of methylene blue (MB) using the Taguchi design method as an optimization strategy. The optimum parameters ...  Read More

Synthesis, characterization and application of Lanthanide metal-ion-doped TiO2/bentonite nanocomposite for removal of Lead (II) and Cadmium (II) from aquatic media

Susan Samadi; Rokhsareh Motallebi; Maryam Nasiri Nasrabadi

Volume 1, Issue 1 , July 2016, , Pages 35-44

https://doi.org/10.7508/jwent.2016.01.005

Abstract
  The efficient application of the photocatalytic activity and superficial adsorption on removing heavy metals from water, two types of sorbents, Nd-TiO2/bentonite and Ce-TiO2/bentonite nanocomposites, were synthesized by sol-gel method. The crystalline nanocomposites were obtained after heat treatment ...  Read More

Trace Cd(II), Pb(II) and Ni(II) ions extraction and preconcentration from different water samples by using Ghezeljeh montmorillonite nanoclay as a natural new adsorbent

Zahra hassanzadeh Siahpoosh; Majid Soleimani

Volume 2, Issue 1 , January 2017, , Pages 39-51

https://doi.org/10.7508/jwent.2017.01.006

Abstract
  This investigate presents the extraction-preconcentration of Lead, Cadmium, and Nickel ions from water samples using Ghezeljeh montmorillonite nanoclay or “Geleh-Sar-Shoor” (means head-washing clay) as a natural and native new adsorbent in batch single element systems. The Ghezeljeh clay ...  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

Iron-doped TiO2 Catalysts with Photocatalytic Activity

Mohammad Ghorbanpour; Atabak Feizi

Volume 4, Issue 1 , January 2019, , Pages 60-66

https://doi.org/10.22090/jwent.2019.01.006

Abstract
  The aim of the present study is to synthesize and characterize Fe-doped TiO2 nanoparticles prepared by molten salt method using a precursor of a solid mixture of TiO2 powder and FeCl3. As far as this study is concerned, this is the simplest method that has been reported so far for the synthesis of Fe-doped ...  Read More

Silica-Supported Copper Oxide Nanoleaf with Antimicrobial Activity Against Escherichia Coli

Mohammad Ghorbanpour; Mohsen Moghimi; Samaneh Lotfiman

Volume 2, Issue 2 , April 2017, , Pages 112-117

https://doi.org/10.22090/jwent.2017.02.006

Abstract
  In this research, a simple and fast method was employed to synthesize CuO nanoleaves/silica gel nanocomposites (CuO/SGn), which is a cost effective antimicrobial material. CuSO4.5H2O is the only raw material used in CuO/SGn production through the molten salt method. The structure and morphology of the ...  Read More