International Journal of Modern Chemistry
ISSN: 2165-0128 (online)Search Article(s) by:
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Current Issue: Vol. 11 No. 1or Keyword in Title:
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Table of Content for Vol. 11 No. 1, 2019

Extraction of Fullerene C60 from the Surface of the Herbal Pipe after Combustion of Coal and Wood
Khalikov Shirinbek Khalikovich, Alieva Savlat Valievna, Zafarov Sorbon Zafarovich
      
 PP. 1 - 8
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ABSTRACT: From the soot of the chimney by completely burning wood together with brown coal, a small amount of graphite was extracted with fullerene C60. It was found that during the burning of coal and wood a large amount of heat is generated accompanying the evaporation of carbon carrying free electrons transforming the trigonal configuration with the further formation of mono-, di- and trimeric carbon radicals condensing to the formation of C60.


Computational and Experimental Studies on Antimicrobial Activity of the Bark of Annona muricata against Some Selected Human Pathogenic Bacteria and Fungi
OYEBAMIJI Abel K, AKINTELU Sunday A, FOLORUNSO Aderonke S., ABIOLA Babawale E., AJAYI Samuel O., Abdusalam Ibrahim O., and Morakinyo Adetoun E.
      
 PP. 9 - 27
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ABSTRACT: Medicinal plants have traditionally provided a source of hope for novel drug compounds with effectiveness to combat antimicrobial resistance, as plant herbal mixtures have made large contributions to human growth and health. Antimicrobial resistance is presently one of the main threats facing human therefore causing dreadful economic and health impact. The phytochemical analysis of the extracts of Annona muricata bark were investigated. The extracts also showed higher minimum antifungal activity when compared to the commercial antibiotic Amphotercin B. The extracts compete favorably with commercial available antibacterial streptomycin in terms of the minimum zones of inhibition and minimal inhibitory concentrations. The prominent antibacterial activity of these extracts on tested bacterial shows that very small amount of the extracts is needed to inhibit the growth of all the tested bacteria except Staphyloccus aureus which might be due to the phytochemicals found in them. Also, the docking study observed in this work revealed the effectiveness of some active components of Annona muricata against both selected bacteria and fungi. Annonaine inhibited Candida albican (PDB ID: 1q42) and Fusarium oxysperium (PDB ID: 5od4) and Coreximine Real and Reticuline inhibited Aspergillus flaws (PDB ID: 1cf3) and Penicillium camemeri (PDB ID: 2mhv) respectively more than other studied compounds. Annonaine inhibited Clostridium sporogenes, Entrococcus faecalis, Klebsiella pneumonia, Pseudomonas aeruginosa and Staphyloccus aureus cell lines than other studied compounds and Coclaurine inhibited Bacillus subtilis. This study provides scientific evidence of traditional use of Annona muricata part for medicinal purpose and indicates its potency for the development of antimicrobial agents.


Preparation, Characterization and Application of Rice Husk Adsorbent in the Removal of Ampicillin from Aqueous Solution
Ungwanen John Ahile, Hope Ngohile Iorav, Levi Dooga, Dafa Terungwa, Solomon Dooyum Igbawase, Kaana Asemave, and Samuel Terlumun Torsabo
      
 PP. 28 - 39
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ABSTRACT: In this study, the adsorption of ampicillin was carried out using the batch adsorption studies. An adsorbent was extracted from rice husk using a sol-gel method with 1.0 M HCl. The physicochemical properties such as moisture content, attrition, bulk density and porosity were found to be 7.25%, 57.60%, 1.34 g/m3 and 0.65 respectively. Batch adsorption experiments of the adsorbent were conducted under various conditions such as temperature, pH, adsorbent dosage, concentration of the adsorbate and contact time using a standard solution of ampicillin. Percentage removal of ampicillin increase from 30-45 ºC and decreases after 45 ºC with optimum operating temperature of 45 ºC, Percentage removal of ampicillin decrease at different pH varying from 3-5 and 9-11, the increases in pH was from 5-9 with 9 been the highest pH of adsorption. The variation of contact time showed a decrease from 10-30 minutes. Percentage removal of ampicillin showed a sharp decrease as adsorbent dosage increase from 0.4-0.6 g. The increase in percentage removal of the adsorbate at various concentrations was inconsistent. The experimental data were tested using adsorption isotherms of Langmuir, Freundlich and Tempkin. The R2 value of Langmuir, Freundlich and Tempkin was found to be 0.811, 0.705 and 0.639. Langmuir model was found to be the best fit for the data.


Kinetics and Physical Mechanism of Pb (II) and Cd (II) Ions Uptake from Aqueous Solution using Unmodified and Modified Cola lepidota Seed Extract as Adsorbents
Armstrong Ehiedu Pat-Okunbor, Millicent Uzoamaka Ibezim-Ezeani, and Chidi Obi
      
 PP. 40 - 56
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ABSTRACT: The kinetics of Pb (II) and Cd (II) removal from aqueous media using unmodified Cola lepidota extract (UCE) and ethanedioic acid-modified Cola lepidota extract (ECE) was evaluated. The time-dependency tests on the adsorbent characteristics of the unmodified and modified propanone extract of Cola lepidota seed were performed at temperatures of 30, 40, 50, 60 and 70 °C. The experimentally resolved data between 10 and 90 min were applied to pseudo first-order, pseudo second-order and Elovich kinetic models. The pseudo second-order equation gave the best fit with correlation coefficient (R2) of 0.9990 to 0.9998 within the tested range, indicating the greater influence of chemical adsorption in the process. The exothermic trend of the chemisorption process was reflected by the negative values of activation energy in the order: Pb (II) onto ECE ˃ Cd (II) onto UCE ˃ Pb (II) onto UCE ˃ Cd (II) onto ECE. The physical mechanism of the process at 30 °C was verified by applying the generated data into film, mass transfer and intra-particle diffusion models. Results showed that the rate controlling step was mass transfer mechanism judging from its highest values of R2; which signified that the energetics of the system experienced negligible resistance from the external and internal diffusion.