Endocrine Disrupting Effects of Carbon Nanotubes: A Systematic Review on Next Generation Nanotechnology based Agrochemicals
Sepideh
Arbabi Bidgoli
Department of Toxicology and Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
author
text
article
2020
eng
The etiological factors for increased risk of endocrine and reproductive disorders remain largely unclear but huge number of data from in vitro, in vivo and epidemiological studies, support the association of their incidence with long term exposure to endocrine disrupting chemicals /agrochemicals in the modern world. Engineered Nanomaterials (ENMs) could be considered as new alternatives to overcome the environmental challenges of endocrine disrupting pesticides and fertilizers and to reduce human health risks of cancer and endocrine toxicity based on their unique physicochemical properties. Carbon nanotubes (CNTs) are the initiative members of the big family of ENMs used for developing “Nanotechnology Based Agrochemical” but despite remarkable detoxifying effects mediated by CNTs, a number of controversies and key questions address the toxicity and endocrine disrupting properties of these authoritative agents which may introduce to the global markets new generation of as nanofertilizers ,nanoadsorbents and nanopesticides soon .The actual issue stems from limited number of studies in valid toxicology models on CNTs related endocrine disruption and absence of systematic reviews on CNTs exposure-mediated endocrine health hazards especially with respect to epidemiological and human data. In this direction this systematic review focused on the following sub-topics: (1) an overview on CNTs applications as novel agrochemicals (2) environmental risks and benefits of CNTs 3) toxicokinetic and toxicodynamic of CNTs (4) contribution of CNTs in pathogenesis of obesity, diabetes and cardiovascular effects 4) evidence on the involvement of CNTs in developmental and reproductive toxicities from in vitro and in vivo studies (5) conclusions and perspectives.
Journal of Water and Environmental Nanotechnology
Iranian Environmental Mutagen Society
2476-7204
5
v.
2
no.
2020
102
113
https://www.jwent.net/article_43377_581c1aa8ad6abeec27623b37866f69a4.pdf
dx.doi.org/10.22090/jwent.2020.02.001
Modeling of adsorption isotherms and competitive adsorption breakthroughs of Nicotine/Pyridine removal from aqueous solution by activated Montmorillonite
Zeinab
Ibrahim
Laboratoire Matériaux, Catalyse, Environnement et Méthodes Analytiques (MCEMA), EDST, FS, Université Libanaise, Campus Hariri, Hadath, Beyrouth, Liban.
author
Yehya
Mohsen
Laboratoire Matériaux, Catalyse, Environnement et Méthodes Analytiques (MCEMA), EDST, FS, Université Libanaise, Campus Hariri, Hadath, Beyrouth, Liban.
author
Joumana
Toufaily
Laboratoire des Etudes Appliquées au Développement Durable et Energie Renouvelable (LEADDER), EDST, Université Libanaise, Campus Hariri, Hadath, Beyrouth, Liban
author
Wassim
Rammal
Université Libanaise, Faculté des sciences V, Nabatieh, Liban
author
Tayssir
Hamieh
Laboratoire Matériaux, Catalyse, Environnement et Méthodes Analytiques (MCEMA), EDST, FS, Université Libanaise, Campus Hariri, Hadath, Beyrouth, Liban.
author
T. Jean
Daou
Université de Strasbourg, Université de Haute Alsace, Axe Matériaux à Porosité Contrôlée (MPC), Institut de Science des Matériaux de Mulhouse (IS2M), UMR CNRS 7361, ENSCMu, 3 bis rue Alfred Werner, 68093 Mulhouse Cedex, France.
author
Maria-Laura
Foddis
DICAAR-Dipartimento di Ingegneria Civile Ambientale e Architecttura, Università de Cagliari, Italia
author
bachar
Koubaissy
Laboratoire des Etudes Appliquées au Développement Durable et Energie Renouvelable (LEADDER), EDST, Université Libanaise, Campus Hariri, Hadath, Beyrouth, Liban
author
text
article
2020
eng
Activated Montmorillonite (AM) reveals as a low-cost and efficient adsorbent for the adsorption of nicotine and pyridine from aqueous solutions. In this study, the influence of several operation conditions (initial compounds concentration, volumetric flow rate, and height of bed) on the shape of breakthrough curves and the mass transfer resistance was evaluated. Adsorption experiments were developed in order to determine the adsorption isotherm of the system, then the adsorption of pyridine and nicotine onto activated Montmorillonite in single and binary system has been studied using fixed bed reactor. In continuous adsorption, Results show that the maximum nicotine uptake 110 mg/g of AM was achieved through electrostatic attraction and hydrogen bond at a pH = 6.3, a flow rate of 1 ml/min and a height of bed equal to 12 mm. In binary mixtures, zeolites adsorption is governed primarily by the size of pollutants present in water. Thus, the bigger compound (in this case, Nicotine), was adsorbed more easily than the pyridine present in the mixture. Experimental data were fitted according to Fowler Guggenheim for the isotherms and Wolborska model for the breakthroughs. AM was regenerated by ethanol and the results show that about 94% of the adsorption capacity is maintained after three times of cyclic adsorption-desorption process.
Journal of Water and Environmental Nanotechnology
Iranian Environmental Mutagen Society
2476-7204
5
v.
2
no.
2020
114
128
https://www.jwent.net/article_43378_f85fbcbc307473ed4faf5f702eb25cfd.pdf
dx.doi.org/10.22090/jwent.2020.02.002
Areca catechu seed extract as improvised acid-base indicator in titrimetric Analysis: An environmental benign approach
Narasimha
Raghavendra
Department of Chemistry K.L.E. Society’s P. C. Jabin Science College (Autonomous) Vidyanagar, Hubballi, India
author
Leena V
Hublikar
Department of Chemistry K.L.E. Society’s P. C. Jabin Science College (Autonomous) Vidyanagar, Hubballi, India
author
Soumya
R Chitnis
Department of Chemistry K.L.E. Society’s P. C. Jabin Science College (Autonomous) Vidyanagar, Hubballi, India
author
Rachel
A Joseph
Department of Chemistry K.L.E. Society’s P. C. Jabin Science College (Autonomous) Vidyanagar, Hubballi, India
author
Deeksha
S Sheelimath
Department of Chemistry K.L.E. Society’s P. C. Jabin Science College (Autonomous) Vidyanagar, Hubballi, India
author
Paravati
S Pattan
Department of Chemistry K.L.E. Society’s P. C. Jabin Science College (Autonomous) Vidyanagar, Hubballi, India
author
text
article
2020
eng
At present, the synthetic compounds are wide choice as indicators in various acid-base titrations. Due to strict environmental regulations, search for eco-friendly compounds as an effective indicator for various acid-base titrations was started. The current vocation highlights the exploit of Areca catechu seed extract as an efficacious indicator for various acid-base titrations and to determine their Ka values. The Areca catechu seed is easily available and easy to extract. The extraction performed by using the Soxhlet extraction apparatus. UV-Vis spectroscopy, FT-IR spectroscopy, XRD and physical properties (density, viscosity, surface tension and refractive index) and qualitative phytochemical screening was performed for the proper identification of the Areca catechu seed extract. The Areca catechu seed extract exhibits sharp colour change at the end point during the various acid-base titrations. The specific contrast between their colors in both the acid and alkali media made species present in the Areca catechu seed extract suitable for the eco-friendly indicator for four acid-base titrations. The end point obtained by the extract of Areca catechu seed coincide with end point obtained by standard synthetic indicator. Areca catechu seed is found to be economical, useful, accurate, simple and eco-friendly in nature.
Journal of Water and Environmental Nanotechnology
Iranian Environmental Mutagen Society
2476-7204
5
v.
2
no.
2020
129
138
https://www.jwent.net/article_43379_2a79615e04f8486c7c15e7a4c0e2237c.pdf
dx.doi.org/10.22090/jwent.2020.02.003
A Comparison of the Catalytic Activity of Cu-X2 (X=Mn, Co) Nano Mixed Oxides toward Phenol Remediation from Wastewater by Catalytic Wet Peroxide Oxidation
Bahram
Bagheri
Department of Applied Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
author
Seyed Ali
Hosseini
Department of Applied Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
author
Habib
Mehrizadeh
Department of Applied Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
author
text
article
2020
eng
The catalytic wet peroxide oxidation of phenol from aqueous wastewater and COD reduction over Cu-Mn2 and Cu-Co2 nano mixed oxides are reported. The effects of process variables of pH, reaction time and hydrogen peroxide dosage were investigated in the process over both catalysts. The catalysts were characterized by X-ray diffraction (XRD) and it was concluded that the mixed oxides are in the form of the spinel structure. However, a little bit CuO was found in the mixed oxides. The morphology and particles size of the catalysts were investigated by scanning electron microscope (SEM). The morphologies and particle size of the catalyst were approximately the same with an average range of 40-60 nm. The catalytic results indicated the higher activity of CuCo2O4 spinel. The phenol oxidation on Cu-Co2 oxide was 82% after 40 min, whereas on the Cu-Mn2 oxide was 78% even after 50 min. The COD reduction The higher activity and reusability of the Cu-Co2 catalyst is attributed to the high synergistic effect between CuO particles and Cu–Co2 spinel, promoting phenol degradation.
Journal of Water and Environmental Nanotechnology
Iranian Environmental Mutagen Society
2476-7204
5
v.
2
no.
2020
139
146
https://www.jwent.net/article_43380_3bf2e40dbd462ce856225bab24440120.pdf
dx.doi.org/10.22090/jwent.2020.02.004
Removal of 2,4-dichlorophenoxyacetic acid from aqueous solutions by modified magnetic nanoparticles with amino functional groups
Reza
Jazini Zadeh
Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
author
Mohammad
Sayadi
Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
author
Mohammad
Rezaei
Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
author
text
article
2020
eng
The present study was performed on the adsorption of 2,4-Dichlorophenoxyacetic acid from aqueous solutions by amine-modified magnetic nanoparticles. The adsorbent was synthesized by the co-precipitation method. The adsorbent properties of Fe3O4@SiO2-NH2 were investigated using XRD, FTIR, TGA, VSM and TEM. Adsorbent efficacy was studied by investigating the effect of pH, initial concentration of pollutants, and adsorbent dose, and times. Finally, kinetics equations and isotherms models were used to describe the data. The results showed that the highest removal percentage was observed at pH 6 and the initial concentration 20 mg/l of 2,4-Dichlorophenoxyacetic acid. Adsorption capacity was increased by 65.3% bypassing the time from the beginning of the process to 60 min. The results from the study of isotherms and adsorption kinetics presented that the sorption procedure follows the pseudo-second-order kinetics and the Langmuir isotherm with R2> 99. The maximum adsorption capacity of Fe3O4@SiO2-NH2 is 116.3 mg/g. Besides, thermodynamic studies have shown that the adsorption process in the present study is endothermic and spontaneous. The experiments showed that Fe3O4@SiO2-NH2 synthesized nanoparticles could be an excellent method to remove 2,4- Dichlorophenoxyacetic acid contaminants from the aqueous solutions due to the high efficiency, simplicity, and lack of secondary contamination in the solution.
Journal of Water and Environmental Nanotechnology
Iranian Environmental Mutagen Society
2476-7204
5
v.
2
no.
2020
147
156
https://www.jwent.net/article_43381_d6220837a85b3cf76b6e7f9a66093e5c.pdf
dx.doi.org/10.22090/jwent.2020.02.005
Multi-walled carbon nanotubes, zeolite and arbuscular mycorrhizal fungi can affect plant Ni concentration in a Ni-polluted soil that was naturally polluted with diesel fuel
Amir Hossein
Baghaie
Department of Soil Science, Arak Branch, islamic Azad university, Arak, Iran
author
Raheleh
Mirzaee
Department of Soil Science, Arak Branch, Islamic Azad University, Arak, Iran
author
text
article
2020
eng
Remediation of soils polluted with heavy metals or petroleum hydrocarbons is one of the environmental problems. This research aimed to evaluate the effect of carbon nanotubes, zeolite and AMF on triticale Ni concentration in a soil co-contaminated with diesel fuel and Ni. Treatments consisted of applying multi walled carbon nanotubes (MWCNs) and zeolite at the rates of 0 , 1 and 2 % (W/W) in a Ni-polluted soil (0, 75 and 150 mg Ni/kg soil) which was naturally polluted with diesel fuel under cultivation of triticale plant inoculated with AMF. After 70 days, plants were harvested and soil and plant Ni concentration was measured using atomic absorption spectroscopy (AAS). Soil microbial respiration and degradation of diesel fuel were also measured. Applying 2 % (W/W) zeolite and MWCNs significantly increased the diesel fuel degradation in soil by 12.3% and 14.5 %, respectively, while the plant Ni concentration was decreased by 8.9 % and 13.1%, respectively. Increasing soil pollution with Ni from 0 to 75 mg/kg soil significantly decreased the degradation of diesel fuel in the soil under cultivation of plant inoculated with AMF by 14.4%. In addition, the soil microbial respiration was also decreased by 11.8%. The results of this study showed that application of zeolite and MWCNs had significant effect on increasing diesel fuel degradation in heavy metal polluted soil that is a positive point in environmental studies.
Journal of Water and Environmental Nanotechnology
Iranian Environmental Mutagen Society
2476-7204
5
v.
2
no.
2020
157
167
https://www.jwent.net/article_43382_6f33b8574be15d437d7e0f515e244c58.pdf
dx.doi.org/10.22090/jwent.2020.02.006
Copper Removal From Paper Mill Wastewater Using Polymer Nanofiber
Arezoo
Ghadi
Department of Chemical Engineering, Islamic Azad University, Ayatollah Amoli Branch, Amol, Iran
author
Sharieh
Hosseini
Department of Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
author
text
article
2020
eng
The aim of this research work is to investigate sorption characteristic of synthesized polypyrrole / polyaniline (PPy / PANI) nano fiber for Cu (II) removal from paper mill wastewater. The sorption is carried out by batch method. The structural characterization of this sorbent was performed by SEM and FTIR analysis. The optimum conditions of copper sorption from paper mill wastewater onto PPy / PANI were found to be: pH=6, contact time 12 min and 0.4 g of sorbent in 100 ml in wastewater. The kinetic studies showed that the sorption process was well described by the pseudo second order kinetic model. Also, Langmuir isotherm provided the best fit to the equilibrium data. Also the effect of temperature on the process was found that the temperature has positive effect on the process. Thermodynamic parameters showed that the sorption of copper onto nano fiber were feasible, spontaneous and endothermic under studied conditions.
Journal of Water and Environmental Nanotechnology
Iranian Environmental Mutagen Society
2476-7204
5
v.
2
no.
2020
168
179
https://www.jwent.net/article_43383_a4366237962f952172cfc789b28f0aef.pdf
dx.doi.org/10.22090/jwent.2020.02.007
Removal of Reactive Black 5 from Waste Waters by Adsorption: A Comprehensive Review
Mohammad Reza
Jalali Sarvestani
Young Researchers and Elite Club, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran
author
Zohreh
Doroudi
Department of Chemistry, Yadegar-e-Imam Khomeini (RAH) Shahre-Rey Branch, Islamic Azad University, Tehran, Iran
author
text
article
2020
eng
Reactive black 5 is a toxic dye that has adverse effects on the environmental ecosystems and the health of human beings. Therefore, its removal is very important. Among the reported methods adsorption gathered a huge attention in the recent years because of its simplicity and low-cost. In this review paper, removal of reactive black 5 by adsorption method from waste waters was evaluated and all of the achievements from the past to the present were discussed in detail. The influence of important operational parameters on the adsorption efficiency of reactive black 5 such as pH, temperature, adsorbent dosage and initial dye concentration was investigated. In addition, the reported adsorbents for reactive black 5 were divided into different groups on the basis of their nature (like nanostructures, natural materials, by products and chitosan based adsorbents) and their important characteristics, including adsorption capacity, removal percentage, initial dye concentration, repeatability, the synthesis cost and optimized experimental parameters are compared with each other in detail. Moreover, important conclusions have been made from the surveyed literature and some suggestions are proposed for the future works.
Journal of Water and Environmental Nanotechnology
Iranian Environmental Mutagen Society
2476-7204
5
v.
2
no.
2020
180
190
https://www.jwent.net/article_43384_33ac9ef9f9876f8e7b956366058bc2f2.pdf
dx.doi.org/10.22090/jwent.2020.02.008