eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
1
7
10.21608/absb.2018.33765
33765
Original Article
RADIATION SYNTHESIS OF POLY VINYLPYRROLIDONE AND POLYACRYLAMIDE HYDROGELS AS SOIL CONDITIONER.
H. Abd El-Wahab
1
Mohamed, Ghobashy
2
Norhan Nady
norhan.nady77@yahoo.com
3
A. Naser
4
Farag Abdelhai
5
Basem El-Damhougy
6
Department of Chemistry, Faculty of Science, Al-Azher University, P.O. Box 11754, Nasr City, Cairo, Egypt
Radiation Research of Polymer department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, P.O.Box.29, Nasr City, Cairo, Egypt
Polymeric Material Research Department Advanced Technology and New Materials Research Institute (ATNMRI), New Borg El-Arab City 21934, Alexandria, Egypt
Department of Chemistry, Faculty of Science, Al-Azher University, P.O. Box 11754, Nasr City, Cairo, Egypt
Department of Chemistry, Faculty of Science, Al-Azher University, P.O. Box 11754, Nasr City, Cairo, Egypt
Department of Chemistry, Faculty of Science, Al-Azher University, P.O. Box 11754, Nasr City, Cairo, Egypt
The important to synthesize a lower toxicity hydrogel with high biocompatibility to use in agricultural field. In this regard, the polymerization reaction of Poly vinylpyrrolidone and Poly acrylamide (PVP/PAAm) hydrogel has been obtained after exposed the copolymer and monomer mixture to dose of 30 kGy. The equilibrium swollen of the obtained hydrogel was 25 (g/g) after 60 min., has an advantage to use as soil conditioner. The hydrogels samples have been prepared in weight ratios 25:75, 50:50 and 75:25 (wt:wt). The crosslink density combining this with measurements of the swelling degree was depend on the copolymer concentration of two polymers. The morphology and the chemical structure of the PVP/PAAm hydrogels was characterized using Scanning electron microscope (SEM), Fourier transform infrared spectroscopy technique (FTIR), and X-ray diffraction (XRD). The PVP/PAAm hydrogels with ratio (75/25) were selected to evaluate the effectiveness on water holding capacity (WHC) in heavy metals and alkaline soil pH >9 for plating sunflower (Helianthus annuus).
https://absb.journals.ekb.eg/article_33765_bf05ead407fc8cd6206db291c1993de7.pdf
Radiation synthesis
Polymerization
Hydrogel
Sunflower
soil conditioner
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
9
23
10.21608/absb.2018.33766
33766
Original Article
URANIUM REMOVAL FROM AQUEOUS SOLUTION USING TRI-N-BUTYL PHOSPHATE AND DI-2-ETHYLHEXYL PHOSPHORIC ACID FUNCTIONALIZED POLYESTER SHEET AND CHARCOAL AS ADSORBENTS
Shabaan M.
1
Daher M.
2
Hussein M.
3
Abdel Aal M.
4
Hosni G.
5
Awais S.
6
Alazhar University, Faculty of science (boys), Cairo, Egypt
Nuclear Material Authority, Box 530, Maadi-Kattameya, Cairo, Egypt
Nuclear Material Authority, Box 530, Maadi-Kattameya, Cairo, Egypt
Nuclear Material Authority, Box 530, Maadi-Kattameya, Cairo, Egypt
Alazhar University, Faculty of science (boys), Cairo, Egypt
Nuclear Material Authority, Box 530, Maadi-Kattameya, Cairo, Egypt
The present investigation deals with the removal of uranium from a nitric acid waste solution (Raffinate solution: produce during yellow cake of uranium production) using the extraction chromatography technique (solvent impregnated material) ), where Tri-N-butyl phosphate (TBP) and Di-2-ethylhexyl phosphoric acid (D2EHPA) solvents were impregnated upon polyester sheet and charcoal respectively then the impregnated resin were tested for uranium removal. Thus, the factors affecting the impregnation process namely, solvent concentration, impregnation time, volume/mass ratio, impregnation temperature and diluents type were studied. Secondly the influences of initial uranium concentration, adsorption temperature, contact time, pH on the uranium adsorption on the prepared materials were studied. From the results the isotherm models also calculated to determine uranium adsorption behavior by the prepared TBP and D2EHPA impregnated polyester sheet and charcoal respectively. Both prepared materials were found to be fitted with Langmuir than Freundlich model isotherm.
https://absb.journals.ekb.eg/article_33766_9a13ed5db1058a6cd58d33a81d91a21c.pdf
Uranium
Removal
D2EHPA
TBP
Impregnation
Adsorption
Elution
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
25
37
10.21608/absb.2018.33767
33767
Original Article
SYNTHESIS, SPECTRAL CHARACTERIZATION AND PHARMACOLOGICAL EVALUATION OF NOVEL THIAZOLE-OXOINDOLE HYBRID COMPOUNDS AS POTENTIAL ANTICANCER AGENTS
Yousry Ammar
1
A. El-Sharief
2
Yehia Mohamed
3
Ahmed Mehany
4
Ahmed Ragab
5
Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11284, Egypt.
Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11284, Egypt
1Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11284, Egypt
Zoology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11284, Egypt
Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11284, Egypt
In the present study, a series of thiazole derivatives bearing 5-morpholinosulfonylindole were designed and synthesized through condensation of 5-(morpholinosulfonyl)isatin (1) with some thiazolidinone derivatives as carbon nucleophiles to afford the corresponding arylidene derivatives (2-5, 7, 8). Furthermore, many thiazole derivatives (11-15) were obtained through the reaction of thiosemicarbazone derivative (10) with many reagents such as dimethyl acetelenedicarboxylate, phencylbromide derivatives, chloroacetonitrile, chloroacetylchloride as well as chloroacetanilide. The newly synthesized compounds were characterized based on spectral (FT-IR,1H NMR, 13C NMR, MS) analysis. Cytotoxicity effects of all synthesized products were tested against three cancer cell lines, MCF-7, HepG-2, HCT-116 and they showed moderate to good cytotoxic activity against the three tested cell lines. The study showed that compounds (2a, 12b and 12c) were less or almost equipotent as doxorubicin against the three cell lines HepG-2, HCT-116.
https://absb.journals.ekb.eg/article_33767_1a77eb4e6d8064f832102d349f793118.pdf
Isatin
thiazol-4(5H)-one
4-thiazolidinone
thiosemicarbazone derivatives
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
39
53
10.21608/absb.2018.33768
33768
Original Article
WATER BORNE COATING BASED ON NEW NANO-COPOLYMERS(STYRENE/ 2- ETHYL HEXYL ACRYLATE).
H. Abd El-Wahab
1
M. Attia
2
W. Hassan
3
A. Nasser
4
Chemistry Department, Faculty of Science, Al-Azhar University, Cairo, Egypt
Chemist at El Nada Company for paints, 5th settlement, Egypt
Polymer Department Manager, Egyptian British Company for polymers and chemicals, 6th of October, Egypt
Chemistry Department, Faculty of Science, Al-Azhar University, Cairo, Egypt
Nanoemulsion copolymers are stable liquid-in-liquid dispersions. Smaller particle sizes tend to valuable properties such as high surface area per unit volume, gloss, washablity, viscosity, and stability. So, new nano-styrene acrylate copolymers based on 2- Ethyl Hexyl Acrylate monomer by using Two different surfactants were prepared by emulsion polymerization, and formulated as a binder for water based paints to get useful properties. These nanoemulsion copolymers also confirmed by IR, GPC, DSC, TGA, TEM and zeta potential. The prepared nano copolymer showed enhancement in solid content, viscosity, and suitable glass transition temperature for coating formula. Finally, based on the results we compared between the prepared nano copolymers as a binder with the commercial styrene acrylate copolymer. The results obtained indicated that the prepared nanocopolymers can be used as a good binder for paints to improve all the film properties and mechanical properties of paints
https://absb.journals.ekb.eg/article_33768_61514a2a50c6c07e617fc173b29850fa.pdf
2-ethyl hexyl acrylate
styrene acrylate
nanoemulsion copolymers
water borne coating
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
55
70
10.21608/absb.2018.33769
33769
Original Article
MODIFIED STARCH AS ADDITIVES TO IMPROVE TISSUE PAPER PROPERTIES
Mohamed Ghazy
1
Waleed El-Zawawy
2
M. Owda
3
Abd-Allah Elmeshtawy
4
Chemistry Department, Faculty of Science, Al –Azhar University, Nasr City, Cairo, Egypt
National Research Center, Cellulose, and Paper Department, 33 El-Bohuth St. former El-Tahrir St., Dokki,Giza, Egypt
Chemistry Department, Faculty of Science, Al –Azhar University, Nasr City, Cairo, Egypt
Chemistry Department, Faculty of Science, Al –Azhar University, Nasr City, Cairo, Egypt
Our research tries to share solutions of the problems that faced who are working in the papermaking industries, especially the retention of the filler, fine fibers, drainage and machine run ability, besides paper strength, softness, smoothness and the increase in the absorption properties of the tissue paper. Starch, which is the most widely used as strengthening agent in papermaking, was modified in the current work with urea, caustic soda and were added to the pulp paste in ratios of 5 to 20 ml. On the other hand, the starch-caustic soda was further modified with trimethylamine hydrochloride in the presence of epichlorohydrin (ECH) as a cross-linker and was also added in the same above ratios to the pulp paste. Another modification was made to the starch which was polymerized with acrylic acid to give hydrogel which was added to the pulp paste in a tiny amount, i.e. 0.001g, and in the same manner, the bleached bagasse pulp was polymerized and added to the pulp paste. The results showed an improvement of the strength, softness, smoothness, stiffness, absorption and zeta potential compared to the blank, enabling them to be promising for making tissue paper or absorbing paper. The research also approaches the environmental address since the bagasse considered as a renewable and sustainable resource coming from agricultural residue (sugarcane) which lead to the decrease in both their environmental impact and economic cost.
https://absb.journals.ekb.eg/article_33769_cb1ecc49e9361d20c2ee76996df0750a.pdf
Starch%
bagasse
Acrylic Acid
modification
Hydrogel
papermaking
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
71
80
10.21608/absb.2018.33770
33770
Original Article
COMPARATIVE STUDY ON THE CORROSION BEHAVIOR OF TI METAL, TI-6AL-4V AND CO-CR-W ALLOYS IN ARTIFICIAL SALIVA
R. Tammam
1
A. Mogoda
2
S. Abd El-Kader
3
Chemistry Department, Faculty of science, Cairo University, Giza 12613, Egypt
Chemistry Department, Faculty of science, Cairo University, Giza 12613, Egypt
Chemistry Department, Faculty of science, Cairo University, Giza 12613, Egypt
Open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements were used to examine the corrosion behavior of Ti, Ti-6Al-4V and CoCrW in artificial saliva containing different NaF concentrations. Also, the effects of saliva pH and immersion time of the studied materials in the test solution were taken into consideration. The corrosion resistance of the three materials was found to decrease with increasing fluoride concentration and increased as pH increased. As the immersion time of the materials in 0.005 M NaF increases their passivity increase in the order CoCrW> Ti >TAV.Anodization of the electrodes led to increase the passivity but did not change the electrodes behavior in saliva at different pH values.
https://absb.journals.ekb.eg/article_33770_be73b6b1e7a232e1e0ca91c38978a8a2.pdf
Ti
Ti-6Al-4V
CoCrW
saliva
fluoride
passivation
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
81
90
10.21608/absb.2018.33771
33771
Original Article
ENHANCEMENT OF MICROSTRUCTURE AND THERMAL EXPANSION COEFFICIENT OF AL/NI-SIC COMPOSITE PREPARED BY POWDER METALLURGY TECHNIQUE
Shimaa Abolkassem
1
Omayma Elkady
2
Ayman Elsayed
3
Rabab Aboshahba
4
Walaa Hussein
5
Powder Technology Division, Manufacturing Technology Department, Central Metallurgical R & D Institute P.O. 87 Helwan 11421 Cairo, Egypt
Powder Technology Division, Manufacturing Technology Department, Central Metallurgical R & D Institute P.O. 87 Helwan 11421 Cairo, Egypt.
Powder Technology Division, Manufacturing Technology Department, Central Metallurgical R & D Institute P.O. 87 Helwan 11421 Cairo, Egypt
Chemistry Department, Faculty of Science, Al-Azhar University Cairo, Egypt
Chemistry Department, Faculty of Science, Al-Azhar University Cairo, Egypt
Al/Ni-SiC composite was prepared via powder metallurgy technique, in which SiC particles were mixed with 10 wt % nickel powder for 24 hrs, then mixed by three percents 5, 10 and 15 wt.% with Al powder in a ball mill for 5 hrs. Three types of sintering techniques were used to prepare the composite. Uniaxial cold compacted samples were sintered in a vacuum furnace at 600oC for 1 hr. The second group was the vacuum sintered samples which were post-processed by hot isostatic press (HIP) at 600oC for 1hr under 190 MPa pressure. The third one was the hot pressed samples that were consolidated at 550oC under the uniaxial pressure of 840 MPa. The results showed that the hot compacted samples have the highest densification values (97-100%), followed by the HIP samples (94-98%), then the vacuum sintered ones (91-97%). The XRD analysis indicated the presence of peaks correspond to Al and Ni, also Al3Ni intermetallic and Al4Si2C5 phases which indicated that all SiC particles were consumed with Al particles to form Al4Si2C5. Hardness results revealed that hot compacted samples have the highest hardness values. Also the CTE results referred the decreasing of its value by increasing Ni/SiC percent.
https://absb.journals.ekb.eg/article_33771_40982a62c8803973116873886f26ad98.pdf
Powder Technology
Al matrix composite
Microstructure
Coefficient of Thermal Expansion
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-21
29
Issue 2-A
91
104
10.21608/absb.2018.33772
33772
Original Article
SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL EVALUATION OF SOME HITHERTO UNKNOWN 4-OXO-THIAZOLES AND THIAZOLO [3, 2-A] PYRIDINES
Said Shedid
1
Gameel El-hag ali
2
Department of Chemistry, Faculty of Science, Alazhar University, Cairo, Egypt
Department of Chemistry, Faculty of Science, Alazhar University, Cairo, Egypt
2-(4-Oxothiazolidin-2-ylidene) acetonitrile and ethyl -2-(4-oxothiazolidin-2-ylidene) acetate (1a, b), were condensed with anthralaldehyde (1:1 molar ratio) and gave 4, 5-dihydro-4-oxothiazole derivatives (2a, b). Refluxing of 2-(Antharacene-9-yl-methylene) malononitrile in acetic acid with thioglycollic acid gave (3). 4-Thiazolidinones containing bis aryl methylidine moieties (4a-c) and (5a, b) were produced via condensation of either (2a) or (3) with different aromatic aldehydes (1:1 molar ratio). Heating of (2a) with α-substituted cin- namonitriles gave the expected substituted thiazolo [3, 2-a] pyridines (6a-d), (8) and (10a-c). The synthesized compounds have been screened for their antimicrobial activities against some selected species of Gram-positive (G+). Gram-negative (G-) bacteria and 3 different types of fungi. They were found to be more active against Gram positive than Gram negative bacteria.
https://absb.journals.ekb.eg/article_33772_26d7eca5eb172d4232e2a36462f514ea.pdf
Thiazolidinones
Thizolopyridines
Antibacterial
Antifungal
Synthesis
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
105
124
10.21608/absb.2018.33773
33773
Original Article
THE ADSORPTION KINETICS AND MODELING FOR Pb(II) REMOVAL FROM SYNTHETIC AND REAL WASTEWATER BY MORINGA OLEIFERA SEEDS
A. Swelam
1
S. Sherif
2
A. Ibrahim
3
Faculty of Science, chemistry Dept. Al Azhar University, Egypt
Medicinal and Aromatic Dept. Horti. Res. Institute, A. R. C., Egypt
Faculty of Science, chemistry Dept. Al Azhar University, Egypt
This work demonstrates the potential of Moringa oleifera seeds powder as an adsorbent for the removal of heavy metals from wastewater. The moringa oleifera seeds powder is characterized as an adsorbent for the removal of heavy metals from wastewater using FTIR, XRD, pHpzc, SEM and BET techniques. Several processing parameters such as; contact time, adsorbent dose, initial lead ion concentrations, pH, and temperature are optimized. The equilibrium data for bio-sorption are analyzed by using Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isotherm models to define the best correlation for lead ions. Among the four isotherm models, both Temkin and Freundlich models best describe the experimental data for Pb(II).The adsorption of the metal ions, Pb (II) is well defined by the pseudo-second order model (R2 > 0.99). The interaction of the cationic species with the MOS powder is predominately via chemisorption rather than physisorption. The thermodynamic parameters such as ΔS, ΔH and ΔG are also determined.
https://absb.journals.ekb.eg/article_33773_ef6c55990c10634d49adc93feb285c90.pdf
Moringa oleifera seeds
pb(II)
Adsorption
Removal
Kinetics
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
125
143
10.21608/absb.2018.33774
33774
Original Article
REMOVAL OF POLLUTANT TEXTILE DYE FROM AQUEOUS SOLUTION USING MIXED NANOCOMPOSITE OF IRON /ALUMINA OXIDE AND ITS MODIFIED WITH CATIONIC SURFACTANTS
Nora Hilal
1
O. Mostafa
2
Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt
Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt
Nanocomposites of mixed iron/aluminum oxide (Fe2O3- Al2O3) were prepared by hydrothermal method and modified with a cationic surfactant CTAB for the removal of dye (C.I Acid Orange 67). The morphology and size of the obtained nanocomposites were characterized by SEM, EDX and TEM. The resulting composite and its modified form have been characterized by using the XRD, FT-IR. Batch adsorption experiments were carried out for the removal of acid dye AO67 from aqueous solution. The adsorption of AO67 over the mixed nanocomposite and its modified form were investigated for different parameters such as the effect of CTAB concentration, effect of pH dye solution, effect of initial dye concentration, mass of the adsorbent and the contact time on the adsorption capacity. The adsorption capacities were evaluated using the Langmuir, Freundlich Dubinin- Radushkevich (D-R) and Temkin adsorption isotherm models, the equilibrium experimental data fits perfectly the Langmuir isotherm. Batch kinetic data were analyzed using pseudo first and second order kinetic models, and otherwise different kinetic models. Kinetic data of adsorption are well fitted by the pseudo 2nd order kinetic model with a good agreement with the intra-particle diffusion model. For this the prepared nanocomposite could be regarded as a potential adsorbent for AO67 removal in a wastewater treatment. and were used the optimum conditions for application in the removal of simulated wastewaters dyes (RB222, RY145 and AR37).
https://absb.journals.ekb.eg/article_33774_1641a77c75bf8e5684d10819b9c802ce.pdf
Isotherm
kinetic
Modified nanocomposites
Hydrothermal route
Acid dye
CTAB
waste water
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
145
154
10.21608/absb.2018.33775
33775
Original Article
ELECTROCHEMICAL STUDIES ON THE SYNTHESIS AND CHARACTERIZATION OF LITHIUM AND VANADIUM AND CHROMIUM PHOSPHATE COMPOUNDS
A. El-Aziz
1
Atef Shenouda
2
M. Sanad
3
H. Khalil
4
M. El-Sabbah
5
Central Metallurgical R & D Institute (CMRDI), Tebbin, P. O. Box: 87 Helwan, Egypt
Central Metallurgical R & D Institute (CMRDI), Tebbin, P. O. Box: 87 Helwan, Egypt
Central Metallurgical R & D Institute (CMRDI), Tebbin, P. O. Box: 87 Helwan, Egypt
Chemistry Department Faculty of Science, Al-Azhar University, Nasr City, Egypt
Chemistry Department Faculty of Science, Al-Azhar University, Nasr City, Egypt
The use of monodiphosphate compounds as renewable sources of energy as positive (cathode) material for lithium-ion batteries (LIB) is considered a great target. Lithium vanadium chromium monodiphosphate (LVCPP)Li9V2.8Cr0.2(P2O7)3(PO4)2 and the Na-doped:Li8.75Na0.25V2.8Cr0.2(P2O7)3(PO4)2 (LNVCPP) compounds have been prepared by using the sol-gel method. The prepared materials are characterized by XRD, FESEM, and EDX. The XRD data is indicated the presence of a single-phase of Li9V2.8Cr0.2 (P2O7)3(PO4)2 and Li8.75Na0.25V2.8Cr0.2(P2O7)3(PO4)2 with trigonal structure. Both cycle performance and rate capability have shown improvement with moderate Na doping content. Li9V2.8Cr0.2(P2O7)3(PO4)2 and Li8.75Na0.25V2.8Cr0.2(P2O7)3(PO4)2 compounds presented the good electrochemical rate and cyclic ability. The cell is prepared with x=0.25 delivered a specific discharge capacity of 50 mAhg-1 after 35 cycles in comparison with the other sample. The enhancement of the rate and cyclic capability may be attributed to the optimizing particle size, morphologies, and structural stability with the proper amount of Na-doping (x =0.25) in Li sites.
https://absb.journals.ekb.eg/article_33775_86767101dc89efc0c93570b8bc728503.pdf
Lithium-ion battery
Cathode material
sol-gel
Li8.75Na0.25V2.8Cr0.2(P2O7)3(PO4)2
eng
Al-Azhar University, Faculty of Science (Boys)
Al-Azhar Bulletin of Science
1110-2535
2636-3305
2018-12-01
29
Issue 2-A
157
166
10.21608/absb.2018.33776
33776
Original Article
APPLICATION OF MAGNETITE NANOPARTICLES FOR ADSORPTION OF ACID RED 141 FROM AQUEOUS SOLUTIONS.
Abeer Emam
1
Gomaa H.
2
ELsisi A.
3
Emam G.
4
Department of Chemistry, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt
Department of Chemistry, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt.
Department of Chemistry, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt
Department of Chemistry, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt.
The potential of Fe3O4 magnetic nanoparticles (MNPs) as efficient adsorbent for acid red 141, as anionic dye, from aqueous solutions was investigated. For this purpose, Fe3O4 MNPs were synthesized via chemical co-precipitation method. The synthesized MNPs were characterized by SEM, FT-IR, XRD, and EDX techniques. The various parameters affecting dye adsorption were investigated and optimized. The kinetic studies for acid red 141 adsorption showed rapid sorption dynamics by second-order kinetic model. Dye adsorption equilibrium data were fitted well to the Freundlich isotherm rather than Langmuir isotherm. The over all adsorption process was favorable, exothermic, and follows both intraparticle and Elovich diffusion models. Maximum capacity (qmax) was calculated, and was found to be 700 mg/g at 10°C and 985 mg/g at 50°C. The results showed that magnetic nanoparticles could be employed as a low-cost efficient adsorbent for removal of anionic dyes from aqueous solution.
https://absb.journals.ekb.eg/article_33776_5d5f00c63308af85c625685e930471e7.pdf
Adsorption percent (%)
adsorption capacity
Acid Red 141
magnetite nanoparticles (MNPs)
SEM
EDX
XRD
FT-IR