Temat: Vibrio fischeri - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Content of PAHs, activities of γ-radionuclides and ecotoxicological assessment in biochars
Autorzy:: Gondek, K.
Mierzwa-Hersztek, M.
Smreczak, B.
Baran, A.
Kopeć, M.
Mróz, T.
Janowski, P.
Bajda, T.
Tomczyk, A.
Powiązania:: https://bibliotekanauki.pl/articles/778621.pdf
Data publikacji:: 2016
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: biochar
sewage sludge
PAHs
γ-radionuclides
Vibrio fischeri
Opis:: The aim of this research was to determine the effect of thermal conversion temperature and plant material addition to sewage sludge on the PAHs content and the activity of selected γ-radionuclides in biochars, and to conduct an ecotoxicological assessment. The pyrolysis of the mixtures of sewage sludge and plant materials at 300°C and such temperature caused an increase in the contents of 2- and 3-ring hydrocarbons. During the pyrolysis of organic materials at 600°C, the amount of the following compounds was reduced in biochars: benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, indeno[1,2,3c,d]pyrene, dibenzo[a,h]anthracene, and benzo[g,h,i]perylene. Among γ-radioisotopes of the elements, natural radiogenic isotopes were dominant. ¹³⁷Cs was the only artificial radioactive isotope. The pyrolysis of the mixtures of municipal sewage sludge and plant materials revealed that isotope ⁴⁰K had the highest radioactive activity. In the case of other analysed nuclides, activities of ²¹²Pb, ²¹⁴Pb, ²¹⁴Bi, and ¹³⁷Cs were determined after the sample pyrolysis. The extracts from the mixtures of sewage sludge and plant materials were non-toxic to Vibrio fischeri.
Źródło:: Polish Journal of Chemical Technology; 2016, 18, 4; 27-35
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Radiation processing of detergents and possible environmental benefits
Autorzy:: Borrely, S. I.
Romanelli, M. F.
Pereira, M. C. C.
da Silva, G. P.
Mesquita, L. C. A.
de Moraes, M. C. F.
Powiązania:: https://bibliotekanauki.pl/articles/148020.pdf
Data publikacji:: 2009
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: EB irradiadion
anionic surfactants
effluent
Vibrio fischeri
Daphnia similis
Opis:: Detergents at waters inducing negative changes for biological degradability and water general quality. Some authors have evidenced a considerable amount of anionic surfactant and toxic effects into natural water and effluents related to detergents. The objective of the study was to apply electron irradiation for reducing toxicity, and for degradation of surfactants. To quantify surfactant LAS determination as MBAS (metylene blue active substances) was applied. The capacity of radiation to reduce surfactants was evidenced for real effluent and for water solution containing sodium dodecyl sulfate, linear alkylbenzene sulfonate (LAS), separately. An electron beam accelerator (EBA) 1.5 MeV was the radiation source. Anionic surfactant solutions as well as real effluents resulted in less toxic samples after irradiation. Toxicity was evaluated for Vibrio fischeri and Daphnia similis. An important decline of total anionic surfactant was observed after irradiation to doses: 6.0 kGy and 20 kGy (surfactant in water solutions and effluents, respectively). To conclude, EBA irradiations accounted for 88% to 96% less toxic surfactants solutions and effluents and 68% to 96% for MBAS compounds decomposition.
Źródło:: Nukleonika; 2009, 54, 2; 61-64
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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