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Synthesis and Antimicrobial Activities of Novel Palladium (II) Complexes of Active Schiff’s Base Ligand Derived from 5-Bromo Isatin

Patange A. N., Yadav U. M., Desai P. A., Singare P. U.

International Letters of Chemistry, Physics and Astronomy

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2015

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Vol. 52

22--27

EN

This paper presents the synthesis and antimicrobial studies of Palladium (II) complexes of ThioSemicarbazone Pd (L1H)2Cl2 and Semicarbazone Pd (L2H)2Cl2 derived from 5-Bromo Isatin. All complexes reported here had been characterised by1H NMR and IR spectral studies .the complexes are diamagnetic in nature and showing square planner geometry. The IR spectral data reveals that both the Schiff’s bases behave as bidentate ligands and are co-ordinated to Pd (II) metal through the sulfur and hydrogenic nitrogen atom. All the new synthesized compounds were screened for antibacterial activity against four of the test organisms like Bacillus pumilus, Micrococcus Lutes, E.coli, Salmonella abony.

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Biosorption lead(II) and nikel(II) from an aqueous solution by bacterial biomass

Wierzba S., Latała A.

Polish Journal of Chemical Technology

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2010

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Vol. 12, nr 3

72-78

EN

The optimum conditions for biosorption of Pb(II) and Ni(II) from aqueous solution were investigated, by using living and nonliving Pseudomonas fluorescens and Bacillus pumilus isolated from wastewater treatment plant. It was found that the optimum pH for Pb(II) removal by living and nonliving cells was 6.0, while 7.0 for Ni(II) removal. At the optimal conditions, metal ion biosorption was increased as the initial metal concentration increased. The binding capacity by living cells is significantly higher than that of nonliving cells at tested conditions. The maximum biosorption capacities for lead and nickel by using Ps. fluo-rescens and B. pumilus were 77.6, 91.4 and 65.1, 73.9 mg/g, respectively. The results of bio-sorption time and desorption experiments suggested that Pb(II) and Ni(II) uptake by the living bacterial biomass might be enhanced by intracellular accumulation.

3

Screening of microorganisms able to biodegrade ethylbenzene

Wieczorek A., Przybulewska K.

Environment Protection Engineering

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2006

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Vol. 32, nr 4

47-52

EN

New bacteria able to decompose ethylbenzene were searched for. Four active strains were isolated from used compost biofilters. They degraded styrene and exhausting gases from wire production plant as well as fresh compost. Their suspensions in mineral medium degraded ethylbenzene at the rates of about 6-56 g/m3/h. The most active bacteria were identified as Bacillus pumilus and Rhodococcus rhodochrous. The decomposers of styrene isolated in our previous research were not able to degrade ethylbenzene.

PL

Poszukiwano nowych bakterii zdolnych do rozkładu etylobenzenu. Z przepracowanych złóż kompostowych biofiltrów degradujących styren i zanieczyszczenia gazów odlotowych z fabryki kabli oraz ze świeżego kompostu wyizolowano cztery aktywne szczepy. Ich zawiesiny w pożywce mineralnej rozkładały etylobenzen z szybkością od około 6 do około 56 g/m3/h. Najbardziej aktywne z nich zidentyfikowano jako Bacillus pumilus i Rhodococcus rhodochrous. Wyizolowane we wcześniejszej pracy bakterie rozkładające styren nie rozkładały etylobenzenu.