Volume-9 ~ Issue-9 ~ September-2016

Abstract: Co(III) obtained by persulphate oxidation of Co(II) forms a chelated complex with L1, a sythesised azo-dye. (already reported in J. Indian Chem Soc. Vol. 92 January 2015 pp. 43-50). Formation of the complex has been studied in both solid state and aqueous phase using different spectroscopic techniques. Co(III) form 1:3 metal ligand complex with L1 at pH = 7.528. Thermal decomposition has been predicted from TGA-DSC analysis. Cyclic Voltametry of this complex has been studied to ensure the presence of Co (III) in complex [Co(L1)3].:.......
Keywords: Azo-dye Co(III) complex , Antibacterial activity, Cyclic Voltametry, TGA, UV-Visible.

[1] T. Deb, D. Choudhury, P. S. Guin, M. B. Saha, G. Chakrabarti, S. Das , Chemico-Biological Interactions 189,2011206-214.
[2] S. Maity, A. Chakraborty, P.K.Saha, M.B.Saha, S.K. Bhattacharya, J.Indian chem.. Soc., 92, 2015, 43-50.
[3] P.K.Saha and M.B. Saha, J.Indian chem.. Soc.,72,1995,755-758.
[4] K.Pandey, P.Giri, R.Patra, S.K. Bhattacharya and M. B. Saha, J.Indian chem.. Soc.,84,2007,256-258.
[5] Anitha, K.R.Venugopala Reddy, V. Rao K.S, Journal of Chemical and Pharmaceutical Research, 3(3), 2011, 511-519.

Abstract: The Benzothiazol-2-yl-(4-chloro-benzylidene)-amine was prepared by the reaction of 2-aminobenzothiazole with 4-chlorobenzaldehyde, the prepared ligand was identified by Micro elemental Analysis, FT.IR and UV-Vis spectroscopic techniques. Treatment of the prepared ligand with the following selected metal ions (Co(II),Ni(II),Cu(II) and Zn(II)) in aqueous ethanol with a 1:2 M:L ratio, yielded a series of complexes of the general formula [M(L)2Cl2]. The prepared complexes were characterized using flame atomic absorption, (C.H.N) Analysis, FT.IR and UV-Vis spectroscopic methods as well as magnetic susceptibility and conductivity measurements. From the obtained data the octahedral structure was suggested for all prepared complexes.
Keywords: spectral studies, complexes, transition metals.

[1]. Al-Hamdani,A.A.S.,Balkf,A.M.,Falah,A. and Shaker,S.A. 2015. New azo-Schiff base derived with Ni(II),Co(II),Cu(II),Pd(II) and Pt(II) complexes: preparation, spectroscopic investigation, structural studies and biological activity, J.Chil.Soc, 60(1),2774-2785.
[2]. Spinu,C.,Pleicean,M. and Tigae, C. 2008. Biological active transition metal chelates with a 2-thiophenecarboxaldehyde-derived Schiff base: synthesis, characterization and antibacterial properties, Turk.J.Chem., 32,487.
[3]. Kiran,A.K.,Mangaokar,K.V. 2011. Synthesis, characterization and antimicrobial activity of mixed Schiff base ligand complexes of transition metal(II) ions, Inter.J.Chem.Tech.Res., 3(1),477-482.
[4]. Panda,B.K. and Chakravorty,A. 2005. Spectroscopic properties of inorganic and organometallic compounds, J.Org-Meta.Chem., 690,3169-3175.
[5]. Krishnapriya,K.P. and Kandaswamy,M. 2004. Coordination properties of a dicompartmental ligand with tetra- and hexadentate coordination sites towards copper(II) and nickel(II) ions, Polyhedron, 24,113-120..

Abstract: Rapid industrial development associatedwith production of toxic wastes, especially heavy metals, has led to anurgent need of creating new sorption materials to remove these wastes from water supplies. This study aimed atdetermining the effectiveness of as-prepared CNT-IPSF/Fe3O4nanocomposites in removal of lead(II) ionsfrom contaminated water. Carbon nanotubes prepared by CVD exhibited fine threads with average internal diameters of 40-50 nm while magnetite silica NPs had cubic spinel structure; due to the strongest reflection from the (311) plane. The silica coated magnetite had magnetization value of 2.5 emu/g while the polysulfonecontributed towards well packed and uniform structure depicting higher surface area suitable in adsorption studies.].:.......
Keywords: Adsorption, desorption, carbon nanotubes, magnetoresponsive, nanoparticles, nanocomposites, reliability, solubility

[1]. Shannon, M.A., et al., Science and technology for water purification in the coming decades. Nature, 2008. 452(7185): p. 301-310.
[2]. Wang, J., et al., Two-phase synthesis of monodisperse silica nanospheres with amines or ammonia catalyst and their controlled self-assembly. ACS applied materials & interfaces, 2011. 3(5): p. 1538-1544.
[3]. Stafiej, A. and K. Pyrzynska, Adsorption of heavy metal ions with carbon nanotubes. Separation and Purification Technology, 2007. 58(1): p. 49-52.
[4]. Ghosh, U.C., Environmental, economic and health perspectives of arsenic toxicity in Bengal Delta. World Scientific News, 2015. 10: p. 111-139.
[5]. Babel, S. and T.A. Kurniawan, Low-cost adsorbents for heavy metals uptake from contaminated water: a review. Journal of hazardous materials, 2003. 97(1): p. 219-243.

Abstract: The objective of this project work is to study the adsorption of Malachite Green dye using Picralima nitida stem bark from aqueous solution. It was found that the potential of Picralima nitida stem bark (PNSBP) for the removal of malachite green (MG) dyes from aqueous solution was high. Batch adsorption studies were conducted and various parameters such as contact time, adsorbent dosage, initial dye concentration, pH and temperature were studied to observe their effects on the dyes adsorption process. The optimum conditions for the adsorption of MG onto the adsorbent (PNSBP) was found to be: contact time (80mins), pH (10.0) and temperature (343K) for an initial MG dye concentration of 50mg/L and adsorbent dose 1.0g. The experimental equilibrium adsorption data fitted best and well to the Freundlich isotherm model..:.......
Keywords: Adsorption, Isotherms, Kinetic, Malachite green, Picralima nitida stem bark, Thermodynamic.

[1]. V.K. Cupta, and P. Suhas, Application of low cost adsorbents for dye removal: A review, J. Eviron. Manage. 90, 2009, 2313-2342.
[2]. R. Han, W. Zou, W. Yu, S. Cheng, Y. Wang, and J. Shi, Biosorption of methylene blue from aqueous solution by fallen phoenix tree leaves, Journal of Hazardous Materials, 141, 2007, 156–162.
[3]. A. Demribas, Agricultural based activated carbon for the removal of dyes from aqueous solution: A review, J. Hazard. Mater. 167, 2009, 1-9.
[4]. V.K. Gray, R. Kumar, and R. Gupta, Removal of malachite green dye from aqueous solution by adsorption using agro-industrial waste.:A case study of Phosopic cineraria, Dyes and Pigment, 62, 2004, 1-10.

Abstract: The potential of Breadfruit seed shell powder, for the removal of congo red (CR) dye from aqueous solution was investigated. The adsorbent was characterized by FTIR and SEM analysis. Batch adsorption studies were conducted and various parameters such as contact time, adsorbent dosage, initial dye concentration, pH and temperature were studied to observe their effects in the dye adsorption process. The optimum conditions for the adsorption of CR onto the adsorbent (BFSSP) was found to be: contact time (60mins), pH (2.0) and temperature (303K) for an initial CR dye concentration of 500mg/L and adsorbent dose 1.0g. The experimental equilibrium adsorption data fitted best and well to the Freundlich isotherm model.:.......
Keywords: Adsorption, Breadfruit seed shell powder, Congo red, Isotherms, Kinetics, Thermodynamics.

[1] K.C. Enenebeaku, N.J. Okorocha, and C.O. Akalezi, Adsorptive removal of methylene blue from aqueous solution using agricultural waste: Equilibrium, kinetic and thermodynamic studies, American Journal of Chemistry and Material Science, 2(3), 2015, 14-24.
[2] C. Umpuch, and B. Jutarat, Adsorption of organic dyes from aqueous solution by surfactant modified corn straw, Inter. J. Chem. Eng. Applications, 4(3), 2013, 134 – 139.
[3] T. Robinson, G. McMullan, R. Marchant, and P. Nigam, Remediation of dyes in textile effluent: a critical review on current treatment technologies with a propose alternative, J. Biores Tech. 77, 2001, 247-275.
[4] A. Hashem, R.A. Akasha, A.Ghith, and D.A. Hussein, Adsorbent based on agricultural wastes for heavy metal and dye removal: A review, Energy Educ. Sci. Technol. 19, 2007, 69-86.
[5] A. Ezgi, B. Miifit, and Y. Mustapa, Removal efficiency of a calyx [4] arene-based polymer for water-soluble carcinogenic direct azo dyes and aromatic amines, Journal of Hazardous Materials, 162, 2008, 960-966.

Abstract: Addition of benzonitrileoxide,generatedin situ by the action of triethylamine on benzhydoxamoyl chloride, to 2-hydroxybenzalaniline and its N-phenyl derivatives yielded a mixture of products which was separated into two compounds by fractional crystallization. The major products have been found to be the respective cycloadducts and the minor product was identified as the dimer of the starting nitrile oxide. The cycloadducts have been identified as 1,2,4-oxadiazoline derivatives (Ia-Va) on the basis of elemental analysis and spectral studies. The synthesized 1,2,4-oxadiazolines (Ia-Va) were tested in vitro for their antifungal activity against Alternaria alternate, Curvularialunata, Fusariumoxysporumand Myrotheciumroridum by employing the standard technique of spore germination inhibition at various concentrations. Some of the compounds have shown promising antifungal activity against the test fungi.:.......
Keywords: .........

[1]. Rai, M., Krishan, K. and Singh, A., Indian J. Chem., 15B, 1997, 848.
[2]. Krishan, K., Rai, M., Singh, J. and Singh, A., Indian J. Chem., 15B, 1997, 1041.
[3]. Singh, N., Sandhu, J.S. and Mohan. S., Tetrahedron Lett., 42, 1968, 4453.
[4]. Manro, M.R., Jolly, M., Sharma, J.R. and Kalsi, P.S., Pestic. Res. J., 8(1), 1996, 13-16.
[5]. Manro, M.R., Gill, K.K., Sharma, J.R. and Kalsi, P.S., Pestic. Res. J., 12(2), 2000, 239-41.
[6]. Manrao, M.R., Singh, B., Sharma, J.R. and Kalsi, P.S., Pestic. Res. J., 7(2), 1995, 157-59..

Abstract: The effect of time on the adsorption of methylene blue (MB), methyl orange (MO) and indigo carmine(IG) from aqueous media onto activated carbon (AC) was monitored using two(2)similar experimental procedures. In the first procedure, 20mg of AC was interacted separately with 10cm3 of 20ppm of each dye at residence time of 5, 10, 15, 20, 30, 45 and 60 minutes, while in the second procedure, 10mg of AC was interacted separately with 10cm3 of 10ppm at residence time of 15, 30, 45 and 60 minutes respectively. From the results, MO was adsorbed more than the others while MB was the most time dependent of the three dyes. Results also showed that chemisorption was the predominant adsorption type, while the adsorption process was particle-diffusion controlled...
Keywords: Adsorption, Methylene blue, Methyl orange, Indigocarmine.

[1]. Benjah-bmm27 (2007). File: Methyl-orange-2D-Skeletal.png. From Wikipedia, the free encyclopedia. Accessed 29th October, 2012
[2]. Calvero (2006). File: Methylene blue.svg. From Wikipedia, the free encyclopedia. Accessed 29th October, 2012
[3]. Cenens, J and Schoonheydt, R.A. (1988). Visible Spectroscopy of methylene blue on Hectorite, Laponite B and Barasym in aqueous suspension. Clay and Clay minerals. 36(3); 214-224 in Wikipedia 2012.
[4]. Hameed, B.H., Mahmoud, D.K. and Ahmad, A.L.(2008). J. Hazard. Mater. 158:499-506 in Vinoth M., Lim, H.Y., Xavier,R., Marimuthu, K., Sreeramanan, S., Mas Rosemal, H.M.H. and Kathiresan, S*. (2010) Removal of methyl orange from solutuions using yam leaf fibres. Int. J. Chem. Tech. Res. 2(4) pp.1892-1900.
[5]. Ho, S.Y., Wase, D.A.J. and Forster, C.F. Water Res. 1995,29,1327 in Horsfall Jnr, M. and Spiff, A.I.(2005). Kinetics of the sorption of Pb2+ and Cd2+ from aqueous solutions by C. bicolor biomass. Bull. Chem. Soc. Ethiop.19(1) pp 88-102.

Abstract: A highly sensitive and selective spectrophotometric method was developed for the determination of trace amount of copper (II) in aqueous DMF medium. The copper ion forms a light green colored complex with 2-Hydroxy-3-Methoxy benzaldehyde thiosemicarbazone (HMBATSC) in an acidic buffer of pH 5.0. The complex has an absorbance maximum at 395nm, was stable for more than 48 hours. The complex shows maximum absorbance at 395nm. Beer's law is obeyed in the range 0.254- 2.542 μgml-1. The molar absorptivity and sandell's sensitivity of the proposed method were found as 6.0 x 103 L.mol-1 cm-1 and 0.011μgcm-2 respectively. The light green colored complex has 1:1 (Cu (II) - HMBATSC) Stoichiometry ...:.......
Keywords: HMBATSC, Determination of Cu(II), Spectrophotometry.

[1]. Copper toxicity in the general population. Clin Neurophysyol 121(4), 2010,459-60.
[2]. Z. Marczenko, Spectrophotometric determination of metal ions, Ellis, Hardwood Ltd, England, 239, 1976.
[3]. Z.Marczenko, Spectrophotometric determination of elements, Hardwood Ltd, Chichester, 1986.
[4]. S.F Snell, Photometric and plurometric methods of analysis (Metals), P.F.M.A. Wiley, Interscience Pub. Part 1, Chapter 5, 141, 1978.
[5]. R. Lobinski, Z. Marczenko, Crit. Rev.Anal.Chem, 23(1), 55, 1992..