Yazar "Kahraman, S" seçeneğine göre listele

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    Adsorptive removal of textile dyes from aqueous solutions by dead fungal biomass
    (Wiley, 2006) Asma, D; Kahraman, S; Cing, S; Yesilada, O
    Dead fungal biomass prepared from Phanerochaete chrysosporium and Funalia trogii was tested for their efficiency in removal of textile dyes. The effects of contact time, initial dye concentration, amount of dead biomass and agitation rate on dye removal have been determined. Removal of all dyes required a very short time (60 min). Experimental results show that, P. chrysosporium was more effective than F. trogii. An increase in the amount of dead biomass positively affected of the dye removal. The removal efficiency of different amount of biomass was in order 1g > 0.5 > 0.2 > 0.1 The highest removal was obtained at 150-200 rpm. Slightly lower removing activities were found at lower agitation rates. This study showed that it was possible to remove textile dyes by dead biomass of P. chrysosporium.
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    Biosorption of copper(II) by live and dried biomass of the white rot fungi Phanerochaete chrysosporium and Funalia trogii
    (Wiley-V C H Verlag Gmbh, 2005) Kahraman, S; Asma, D; Erdemoglu, S; Yesilada, O
    Biosorption is an innovative and alternative technology to remove heavy metal pollutants from aqueous solution using live, inactive and dead biomasses such as algae, bacteria and fungi. In this study, live and dried biomass of Phanerochaete chrysosporium and Funalia trogii was applied as heavy metal adsorbent material. Biosorption of copper(II) cations in aqueous solution by live and dried biomass of Phanerochaete chrysosporium and Funalia trogii was investigated to study the effects of initial heavy metal concentration, pH, temperature, contact time, agitation rate and amount of fungus. Copper(II) was taken up quickly by fungal biomass (live or dried) during the first 15 min and the most important factor which affected the copper adsorption by live and dried biomass was the pH value. An initial pH of around 5.0 allowed for an optimum adsorption performance. Live biomass of two white rot fungi showed a high copper adsorption capacity compared with dried biomass. Copper(II) uptake was found to be independent of temperature in the range of 20-45degreesC. The initial metal ion concentration (10-300 mg/L) significantly influenced the biosorption capacity of these fungi. The results indicate that a biosorption as high as 40-60% by live and dried biomass can be obtained under optimum conditions.
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    Decolorization and bioremediation of molasses wastewater by white-rot fungi in a semi-solid-state condition
    (Springer, 2003) Kahraman, S; Yesilada, O
    Molasses wastewater (vinasse; the by-product of distillation of fermented sugar) was decolorized and its chemical oxygen demand (COD) was reduced in static cultivation using the fungi Coriolus versicolor, Funalia trogii, Phanerochaete chrysosporium and Pleurotus pulmonarius ('Pleurotus sajor-cajit'). The effect of cotton stalk on decolorizing and COD removing capability of four fungi was determined. In the entire concentration range tested (10-30 %), wastewater was effectively decolorized by C. versicolor and F. trogii. Cotton stalk addition stimulated the decolorization activity of all fungi. The utilization of cotton stalk represents several advantages due to its function as an attachment place and as a source of nutrients; its use also reduces process costs.
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    Effect of spent cotton stalks on color removal and chemical oxygen demand lowering in olive oil mill wastewater by white rot fungi
    (Springer, 1999) Kahraman, S; Yesilada, O
    Wastewater from olive oil mill was decolorized land its chemical oxygen demand reduced in static cultivation) using the fungi Coriolus versicolor, Funalia trogii, Phanerochaete chrysosporium and Pleurotus sajor-caju. The effect of cotton stalk on decolorizing and COD removing capability was demonstrated. P. chrysosporium (in 20 % medium with cotton stalk) reduced the COD by 48 % and color by 58 %, F. trogii (in 30 % medium with cotton stalk) ) by 51 and 55 %, respectively.
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    Industrial and agricultural wastes as substrates for laccase production by white-rot fungi
    (Springer, 2001) Kahraman, S; Yesilada, O
    White-rot fungi, Coriolus versicolor and Funalia trogii, produced laccase on media with diluted olive-oil mill wastewater and vinasse. Addition of spent cotton stalks enhanced the laccase activity with a maximum after 12 d of cultivation.