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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

2010

Vol. 12, nr 3

72-78

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.

Badania nad określeniem warunków oddzielenia niklu z roztworów po ługowaniu złomu baterii Ni-Cd

Skowroński J. M., Osińska M.

Przemysł Chemiczny

2009

T. 88, nr 7

819-822

Electrooxidation of methanol in alkaline solution on composite electrodes

Skowroński J.M., Ważny A.

Materials Science Poland

2006

Vol. 24, No. 1

291--297

The electrooxidation of methanol in an alkaline electrolyte has been studied on nickel foam-based composite electrodes. The aim of this work was to establish the electrochemical usefulness of electrodes in alkaline fuel cells. Nickel foam, exhibiting electrocatalytic activity, was modified by covering it with a polyaniline (PANI) film, followed by the electrodeposition of platinum particles on the PANI matrix (Ni|PANI|Pt). For comparison, platinum was also deposited directly on the surface of the nickel substrate. The results show that Ni|PANI|Pt electrodes exhibit the highest electrocatalytic activity for methanol oxidation in the reaction occurring in the potential range of NiOOH formation.