Pentachlorophenol degradation by activated sludge with phenol and glucose as growth substrates

• Autorzy: Niesler M. , Surmacz-Górska J.

Identyfikatory

DOI

10.24425/123360

Warianty tytułu

PL

Degradacja pentachlorofenolu przez osad czynny z fenolem i glukozą jako substratami wzrostowymi

• Języki publikacji: EN

Abstrakty

EN

Important factors affecting the effectiveness of microbiological degradation of chlorophenols include the presence of additional growth substrates, which ensure the accessibility of electron acceptors and electron donors, or the applied strains of microorganisms and their adaptation to pollution. Therefore an improvement of PCP degradation by the adaptation of activated sludge to PCP with phenol and glucose as cometabolites was examined. The activated sludge was adapted to 12 mg∙L^-1 of PCP and to 200 mg∙L^-1 of phenol, and then, the effect of the adaptation of activated sludge and the presence of additional sources of carbon and energy on the biodegradation of PCP and sorption properties were tested. The obtained results confirmed that the presence of additional sources of carbon and energy in the growth medium would improve the efficiency of PCP degradation. Among all analyzed types of research setups, the highest PCP degradation was noted in setups with phenol, regardless of the method of activated sludge adaptation or lack of adaptation. The biodegradation of PCP in the presence of glucose was less efficient than in the presence of phenol. The highest, 60% decrease in PCP concentration was obtained for activated sludge adapted to PCP in the presence of phenol.

PL

Długotrwałe stosowanie pentachlorofenolu (PCP) spowodowało jego powszechne występowanie w środowisku. Ludzie mający stały kontakt z PCP narażeni są na choroby nowotworowe, uszkodzenia płodu, mutacje genetyczne, zaburzenia obrazu krwi, a także zmiany w układzie nerwowym. Ważnymi czynnikami wpływającymi na efektywność mikrobiologicznego rozkładu chlorofenoli są dodatkowe substraty wzrostowe zapewniające donory i akceptory elektronów, odpowiednie mikroorganizmy i ich adaptacja do rozkładanych związków. Z tego powodu oceniono wpływ adaptacji osadu czynnego do PCP i fenolu oraz glukozy i fenolu, jako dodatkowych substratów wzrostowych, na poprawę biodegradacji PCP. Osad czynny został zaadaptowany do 12 mg∙L^-1 PCP i 200 mg∙L^-1 fenolu, a następnie efekt adaptacji osadu czynnego i dodatku źródła węgla i energii na biodegradację i sorpcję PCP był badany. Uzyskane rezultaty potwierdziły, że obecność dodatkowego źródła węgla i energii w pożywce zwiększa efektywność usuwania PCP. Najwyższe, 60 procentowe usunięcie PCP uzyskano w zaadaptowanym do PCP osadzie czynnym w obecności fenolu jako substratu wzrostowego.

Słowa kluczowe

EN

phenol; cometabolism; pentachlorophenol; activated sludge adaptation

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2018
• Tom: Vol. 44, no. 3
• Strony: 31--41
• Opis fizyczny: Bibliogr. 38 poz., tab., wykr.

Twórcy

autor

Niesler M.

• Silesian University of Technology, Poland, Environmental Biotechnology Department Silesian University of Technology

autor

Surmacz-Górska J.

• Silesian University of Technology, Poland, Environmental Biotechnology Department Silesian University of Technology

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).