ORIGINAL_ARTICLE
Modification of activated carbon by ZnCl2, CaCl2, MgCl2 and their applications in removal of nitrate ion from drinking water
Nitrate is one of the most crucial pollutants in the urban and rural drinking water resources. Many techniques have been used to remove these contaminants. In this study, granular activated carbon (GAC) modified with the mixture of ZnCl2, CaCl2 and MgCl2 is utilized for the removal of nitrate from the water. Results of removing this adsorbent by batch method and changing the effective factors including contact time, adsorbent dose, nitrate concentration, pH, and temperature were investigated. Two theoretical adsorption isotherms namely Langmuir and Freundlich were used to describe the experimental results. The Langmuir isotherm model explained the sorption process well and showed the best coefficient of determination (0.9947). The nitrate sorption kinetic data were successfully fitted to pseudo-second order kinetic model. Adsorption was maximized between pH ranges 4-8. The overall results demonstrated potential applications of modified GAC for nitrate removal from the aqueous solutions.
https://www.ajgreenchem.com/article_65164_95bf7eaa306dbcab733b98c20b90a1d1.pdf
2019-01-01
1
12
10.22034/ajgc.2018.65164
Nitrate removal
Adsorption Isotherm
Activated carbon
Kinetic
Homa
Shafiekhani
shafieehoma@yahoo.com
1
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
LEAD_AUTHOR
Roghiyeh
Barjoizadeh
barjoizadeh@gmail.com
2
Department of Chemistry, Lamerd Branch, Islamic Azad University, Lamerd 74311, Iran
AUTHOR
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ORIGINAL_ARTICLE
Extraction and isolation of anti-hypertensive peptide by alkalase from spirulina platensis
Spirulina has attracted a great attention as it contains many nutrients, such as protein, vitamins and minerals. Spirulina contains peptides that have therapeutic and beneficial effects on the human body. Some medicinal properties of the biological peptides of Spirulina platensis include antioxidants, antifungal, antimicrobial, anti-diabetes and anticoagulant activity. This study provides an overview of the biological peptides derived from Spirulina and some biological activities with health benefits. In this study peptide Ile-Gln-Pro from spirulina platalsis was isolated using an alkalase enzyme and investigate its inhibitory effect on the angiotensin I-converting enzyme (ACE). This peptide was purified by gel filtration chromatography and Reverse-phase high-performance liquid chromatography (RP-HPLC) Enzymatic kinetic studies showed a non-competitive inhibitory activity of this peptide, and the Ki value was 5.8 μm.
https://www.ajgreenchem.com/article_65318_6f582c863a8f8a5b154f545e98d32139.pdf
2019-01-01
13
21
10.22034/ajgc.2018.65318
Spirulina platensis
Alkalase
ACE inhibitory peptide
Gholamreza
Mahdieh
gholammahdieh@gmail.com
1
Department of Biochemistry, Payame Noor University, 19395- 4697, Tehran, Iran
AUTHOR
Mohamad
Fazilati
mfazilati@yahoo.com
2
Department of Biochemistry, Payame Noor University, 19395- 4697, Tehran, Iran
AUTHOR
Mahdieh
Izadi
izadi.mahdieh@yahoo.com
3
Department of Biochemistry, Payame Noor University, 19395- 4697, Tehran, Iran
LEAD_AUTHOR
[1]. Rodrı́guez-Hernández A., Blé-Castillo J.L., Juárez-Oropeza M.A., Dı́az-Zagoya J.C. Life Sci., 2001, 69:1029
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22
ORIGINAL_ARTICLE
Cu(II)-Schiff Base/SBA-15 as an efficient catalyst for synthesis of benzopyrano[3,2-c]chromene-6,8-dione derivatives
In this study, we synthesized the benzopyrano[3,2-c]chromene-6,8-dione derivativesby one-pot multi-component reaction of 1,3-cyclohexanedione, arylaldehydes, and 4-hydroxycoumarin under the solventless condition using Cu(II)-Schiff base/SBA-15 as a reusable heterogeneous catalyst in high yields. These kinds of catalysts are built from mesoporous silica SBA-15 which is covalently anchored with Cu(II)-Schiff base complex. The high yields, simple work-up procedure, reuseability of the catalyst, and environmentally friendly conditions are the main advantages of this method compared to the other techniques. The products were identified by using 1H NMR, mass and IR spectra, which were compared to those reported previously.
https://www.ajgreenchem.com/article_65504_3967045dd7360e8e90cba058c9953bc2.pdf
2019-01-01
22
33
10.22034/ajgc.2018.65504
Benzopyranchromens
4-Hydroxycoumarin
Cu(II)-Schiff base/SBA-15
Heterogeneous catalyst
One-pot multi-component reaction
Radineh
Motamedi
mot.chemist@gmail.com
1
Department of Chemistry, Payame Noor University, PO Box 19395‐3697, Tehran, Iran
LEAD_AUTHOR
Fariba
Ebrahimi
ebrahimimanagement1992@gmail.com
2
Department of Chemistry, Payame Noor University, PO Box 19395‐3697, Tehran, Iran
AUTHOR
Ghasem
Rezanejade Bardajee
ghrezanejad@yahoo.com
3
Department of Chemistry, Payame Noor University, PO Box 19395‐3697, Tehran, Iran
AUTHOR
[1]. Murray R.D.H., Mendez J., Brown R.A. The Natural Coumarins; John Wiley: New York, 1982
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ORIGINAL_ARTICLE
Ionic liquid supported on magnetic nanoparticles as an efficient and reusable green catalyst for synthesis of benzimidazole derivatives under solvent and solvent-free conditions
The Fe3O4 nanoparticles and the supported ionic liquid (Fe3O4-IL) were produced and used as efficient magnetic catalysts to synthesize the benzimidazole derivatives under solvent and solvent-free conditions. Quantitative conversion of the reactants was achieved under solvent-free conditions; catalyst reusability, through convenient magnetic decantation, showing an insignificant loss in activity. The catalyst can be readily isolated by using an external magnet and no obvious loss of activity was observed when the catalyst was reused in seven consecutive runs.
https://www.ajgreenchem.com/article_65743_d549d113556a709784eda4217b786d65.pdf
2019-01-01
34
42
10.22034/ajgc.2018.65743
Magnetic nanoparticle
Ionic Liquid
Green catalyst
Solvent-free condition
Eshagh
Rezaee Nezhad
e.rezaee66@yahoo.com
1
Mud Engineer Group, National Iranian Drilling Company (NIDC), PO Box 61635901, Ahwaz, Iran
LEAD_AUTHOR
Reza
Tahmasebi
reza.tahmasebi@yahoo.com
2
Mud Engineer Group, National Iranian Drilling Company (NIDC), PO Box 61635901, Ahwaz, Iran
AUTHOR
[1]. Chikazumi S., Taketomi S., Ukita M., Mizukami M., Miyajima H., Setogawa M., Kurihara Y. J. Magn. Magn. Mater., 1987, 65:245
1
[2]. Lu A.H., Schmidt W., Matoussevitch N., Bonnemann H., Spliethoff B., Tesche B., Bill E., Kiefer W., Schüth F. Angew. Chem., 2004, 116:4403
2
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[4]. Gupta A.K., Gupta M. Biomaterials, 2005, 26:3995
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ORIGINAL_ARTICLE
HKUST-1 as an efficient and reusable heterogeneous catalyst for synthesis of 1,4-dihydropyridine at room temperature
One-pot synthesis of Hantzsch 1,4-dihydropyridines (1,4-DHP) under solvent-free conditions catalyzed by HKUST-1 metal-organic frameworks are reported here. This method provides 1,4-dihydropyridines in good to excellent yields with little catalyst loading. The present methodology offers several advantages, including ease of the preparation and handling of the catalyst, simple and easy work-up, short reaction times, high yields of the products and recyclability of the catalyst. One-pot synthesis of Hantzsch 1,4-dihydropyridines (1,4-DHP) under solvent-free conditions catalyzed by HKUST-1 metal-organic frameworks are reported here. This method provides 1,4-dihydropyridines in good to excellent yields with little catalyst loading. The present methodology offers several advantages, including ease of the preparation and handling of the catalyst, simple and easy work-up, short reaction times, high yields of the products and recyclability of the catalyst.
https://www.ajgreenchem.com/article_79184_bb40826ac8f3821b1694ea6d4c29fdba.pdf
2019-01-01
43
52
10.22034/ajgc.2018.66071
1
4-dihydropyridines
Ethanol
Aldehydes
HKUST-1
Zeinab
Arzehgar
arzehgar@yahoo.com
1
Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
LEAD_AUTHOR
Sami
Sajjadifar
ss_sajjadifar@gmail.com
2
Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
AUTHOR
Hamidreza
Arandiyan
hamid.arandiyan@sydney.edu.au
3
Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, The University of Sydney, Sydney 2006, Australia
AUTHOR
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ORIGINAL_ARTICLE
Synthesis of spiro [cyclobutane-1,2'-indene]-1',3'-dione under a new multi-site phase-transfer catalyst combined with ultrasonication-a kinetic study
In the present study, kinetics of synthesis of spiro[cyclobutane-1,2’-indene]-1’,3’-dione was successfully carried out by spirolation of indene-1,3-dione with 1,3-dibromo propane using aqueous potassium hydroxide and catalyzed by a newly synthesized multi-site phase-transfer catalyst viz., 1,3,5-tribenzyl-1,3,5-triethyl-1,3,5-triazinane-1,3,5-triiu tribromide (MPTC), under ultrasonic (40 kHZ, 300 W) assisted organic solvent condition. The pseudo first-order under the ultrasound irradiation (40 kHz, 300 W) in a batch reactor, the overall reaction was greater than that of without ultrasound.
https://www.ajgreenchem.com/article_66101_a05ffc5278803916fd3f06b5c31e300c.pdf
2019-01-01
53
69
10.22034/ajgc.2018.66101
Sonocatalysis Interfacial Reaction Kinetics MPTC 1
3-dibromo propane
Manickam
Sathiyaraj
manicsathya@gmail.com
1
Department of Chemistry, Pachaiyappa’s College Chennai, Tamil Nadu, India - 600 030
LEAD_AUTHOR
Perumal
Venkatesh
venkat_28@hotmail.com
2
Department of Chemistry, Pachaiyappa’s College Chennai, Tamil Nadu, India - 600 030
AUTHOR
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ORIGINAL_ARTICLE
Green synthesis of silver nanoparticles using root extracts of Cassia toral L. and its antimicrobial activities
Use of environmentally benign materials such as plant extract used to synthesize silver nanoparticles (Ag-NPs) offers numerous benefits such as being eco-friendly and compatibility for pharmaceutical and other biomedical applications. Metallic nanoparticles are used in different applications including, electronics, catalyst, and photonic. Silver metal has a great toxicity against a wide range of microorganisms, particularly silver nanoparticle which has promising antimicrobial properties. Silver nanoparticles are found to be effective as anti-inflammatory, anti-angiogenesis, antiviral, anti-platelet activity against cancer cells. The synthesized Ag-NPs of Cassia tora L. roots were characterized using UV-vis spectra, FT-IR, TEM, and XRD analysis. The antimicrobial activities were assessed by disc diffusion method. The Ag-NPs were also examined against the fresh cultures of one Gram-positive and three Gram-negative bacteria.
https://www.ajgreenchem.com/article_66758_a4e33327327095a33af0c9aec642a93d.pdf
2019-01-01
70
81
10.22034/ajgc.2018.132083.1073
Green synthesis
Silver nanoparticles
XRD
Cassia tora L
Rahimullah
Shaikh
rahimgvish@gmail.com
1
Department of Chemistry, Govt. Vidharbha Institute of Science and Humanities, Amravati, India
AUTHOR
Imran
Zainuddin Syed
izsyed81@gmail.com
2
Department of Chemistry, Govt. Vidharbha Institute of Science and Humanities, Amravati, India
LEAD_AUTHOR
Payoshni
Bhende
payoshnibhende@gmail.com
3
Department of Chemistry, Govt. Vidharbha Institute of Science and Humanities, Amravati, India
AUTHOR
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ORIGINAL_ARTICLE
Phytoremediation potential of Suaeda vera for some heavy metals in roadside soil in Benghazi, Libya
The increased concentrations of heavy metals in soil pose a threat to human life through the food chain. Soil and plant samples from the coastal area of Benghazi city were collected and analyzed using flame atomic absorption spectroscopy (FAAS) for their heavy metal contents. The metal content of Cu, Cr, Ni, Zn, and Pb has been determined in the soil in the vicinity of plant roots, plant roots, and leaves. Biological absorption coefficient (BAC), bioconcentration factor (BCF), and translocation factor (TF) have been calculated to evaluate the ability of Suaeda vera to extract the metals from soil. The results showed that Suaeda vera Forssk. Ex J.F. Gmel is more suitable for phytoextraction than the phytostabilisation. Phytoremediation as a green technology has many advantages over the other methods of heavy metals removal from soils.
https://www.ajgreenchem.com/article_67060_10d22758318557fef310b957061ca97a.pdf
2019-01-01
82
90
10.22034/ajgc.2018.67060
Phytoremediation
Phytoextraction
Phytostabilisation
Translocation
Suaeda vera
Nabil
Bader
nabil.bader@uob.edu.ly
1
Chemistry Department, Faculty of Science, Benghazi University, Benghazi, Libya
LEAD_AUTHOR
Eman
Alsharif
2
Chemistry Department, Faculty of Science, Benghazi University, Benghazi, Libya
AUTHOR
Mohammed
Nassib
3
Chemistry Department, Faculty of Science, Benghazi University, Benghazi, Libya
AUTHOR
Nessma
Alshelmani
4
Chemistry Department, Faculty of Science, Benghazi University, Benghazi, Libya
AUTHOR
Amani
Alalem
5
Chemistry Department, Faculty of Science, Benghazi University, Benghazi, Libya
AUTHOR
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ORIGINAL_ARTICLE
Computational investigations of a novel photoactive material for potential application in dye sensitized solar cells
In the present work, semiempirical computational methods were employed to investigate the properties of a complex formed by co-adsorption of protoporphyrin IX zinc (II) and 4-(dicaynomethylene)-6-(P-methylstyryl)-4H-pyrane to elucidate its potential as sensitizer in dye sensitized solar cells. At first, PPZ-TiO2 adsorption complex was formed via -COO- anchoring groups to determine its adsorption energy, electronic absorption spectrum. Then it was compared with the reported literature. Afterwards 4-(dicaynomethylene)-6-(P-methylstyryl)-4H-Pyrane was co-adsorbed onto TiO2 along with protoporphyrin IX zinc (II) and computational calculations were done to obtain total energy, energies of HOMO/LUMO and theoretical electronic absorption spectrum of the compound. The results showed that the new complex has the potential to be used as an efficient light absorbing antenna in dye sensitized solar cells with an adsorption energy of -31714.5 kcal/mol and can provide a material with broad absorption range up to 615 nm. In addition, the HOMO/LUMO energy levels of two dyes adsorbed on TiO2, were found optimal for the flow of electrons in a cascade manner to the inorganic core materials.
https://www.ajgreenchem.com/article_67250_4c9b1e4896b7f268dd984264df30786b.pdf
2019-01-01
91
102
10.22034/ajgc.2018.136899.1077
Porphyrin
Computational study
Co-adsorption
Dye sensitized solar cells
Shamsa
Munir
shamsa.munir@wus.edu.pk
1
Department of Chemistry, Women University Swabi, Swabi, Pakistan
LEAD_AUTHOR
Maleeha
Begum
malibstudent@gmil.com
2
Department of Chemistry, Women University Swabi, Swabi, Pakistan
AUTHOR
Nosheen
.
3
Department of Chemistry, Women University Swabi, Swabi, Pakistan
AUTHOR
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ORIGINAL_ARTICLE
Bio fabricated of silver nanoparticles using Ocimum basilicum and its efficacy of antimicrobial and antioxidant activity
To resolve the efficacies of antibacterial, antifungal, and antioxidant activities of aqueous leaf extract of Ocimum basilicum mediated biosynthesis of silver nanoparticles (Ag-NPs). Aqueous and synthesized Ag-NPs were tested by disc diffusion method against the bacterial and fungal pathogens. Antioxidant activity of synthesized Ag-NPs and aqueous plant extract were determined. The scavenging radicals were estimated by DPPH method. The synthesized Ag-NPs were characterized by XRD, FT-IR, FESEM and EDX. XRD peaks at 2θ values of 27.6°, 32.2°, 38.16°, and 46.04° representing the (110), (111), (121), and (200). FT-IR absorption peak located at 2910 cm-1 are due to C–H stretch of alkenes and a peak at 1669 cm-1 due to -C=C- band of alkenes and a peak at 1614 cm-1 is assigned to N-H bend of 1° amines and a peak at 1092 cm-1 due to C–N stretch of aliphatic amines and a peak at 875 cm-1 are due to C–H stretch of aromatics. TEM study reveals that most of the nanocrystals formed were spherical and polyphedral in shape antibiotics inhibition zones against the bacteria Staphylococcus aureus, Escherichia coli, Klebselia pneumonia, Proteus mirabilis, Proteus valgar is using the nanoparticles 8.9, 9.2, 7.8, 8.1, and 7.4 mm. Ag-NPs exhibited strong antibacterial activity antifungal activity versus Asfergillus flavus, Asfergillus terreus, Asfergillus niger, Asfergillus fumigates exhibited a 7.8, 7.5, 6.9, and 7.1 mm inhibition zone using the Ag-NPs. Green synthesized Ag-NPs provides a promising approach can satisfy the requirement of large-scale industrial production bearing the advantage of low-cost, eco-friendly and reproducible.
https://www.ajgreenchem.com/article_67295_b875f47e5e1c9132d713dcbe1ee7a2d7.pdf
2019-01-01
103
124
10.22034/ajgc.2018.67295
Ocimum basilicum
Ag-NPs
Antioxidant
Antimicrobial activity
Devan
Elumalai
drelumalai86@gmail.com
1
PG. Department of Zoology, Pachaiyappas College for Men, Kanchipuram-631 501, Tamilnadu, India
AUTHOR
Manickam
Sathiyaraj
manicsathya@gmail.com
2
PG & Research Department of Chemistry, Pachaiyappas College, Chennai-600 030, Tamilnadu, India
AUTHOR
Elangovan
Vimalkumar
vimal420@gmail.com
3
Department of Zoology, Auxilium College (Autonomous), Gandhi Nagar, Vellore-632 006, Tamilnadu, South India
AUTHOR
Patheri Kunyl
Kaleena
drpkklab@gmail.com
4
Department of Zoology, Presidency College (Autonomous), Chennai-600 005, Tamilnadu, India
LEAD_AUTHOR
Maduraiveeran
Hemavathi
hemaveeran@gmail.com
5
Department of Zoology, Pachaiyappas College for Women, Kanchipuram-631 501, Tamilnadu, India
AUTHOR
Perumal
Venkatesh
venkat_28@hotmail.com
6
PG & Research Department of Chemistry, Pachaiyappas College, Chennai-600 030, Tamilnadu, India
AUTHOR
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