Počet záznamů: 1
Pharmaceuticals, benzene, toluene and chlorobenzene removal from contaminated groundwater by combined UV/H2O2 photo-oxidation and aeration
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SYSNO ASEP 0477559 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Pharmaceuticals, benzene, toluene and chlorobenzene removal from contaminated groundwater by combined UV/H2O2 photo-oxidation and aeration Tvůrce(i) Lhotský, O. (CZ)
Krákorová, Eva (MBU-M)
Mašín, P. (CZ)
Žebrák, R. (CZ)
Linhartová, Lucie (MBU-M) RID, ORCID
Křesinová, Zdena (MBU-M) RID
Kašlík, J. (CZ)
Steinová, J. (CZ)
Rodsand, T. (NO)
Filipová, Alena (MBU-M) RID, ORCID
Petrů, K. (CZ)
Kroupová, K. (CZ)
Cajthaml, Tomáš (MBU-M) RID, ORCIDZdroj.dok. Water Research. - : Elsevier - ISSN 0043-1354
Roč. 120, SEP 1 2017 (2017), s. 245-255Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Pharmaceuticals ; BTEX ; Chlorobenzene Vědní obor RIV EE - Mikrobiologie, virologie Obor OECD Microbiology Institucionální podpora MBU-M - RVO:61388971 UT WOS 000403431000023 EID SCOPUS 85019160096 DOI 10.1016/j.watres.2017.04.076 Anotace This study was performed to test the feasibility of several decontamination methods for remediating heavily contaminated groundwater in a real contaminated locality in the Czech Republic, where a pharmaceuticals plant has been in operation for more than 80 years. The site is polluted mainly by recalcitrant psychopharmaceuticals and monoaromatic hydrocarbons, such as benzene, toluene and chlorobenzene. For this purpose, an advanced oxidation technique employing UV radiation with hydrogen peroxide dosing was employed, in combination with simple aeration pretreatment. The results showed that UV/H2O2 was an efficient and necessary step for degradation of the pharmaceuticals, however, the monoaromatics were already removed during the aeration step. Characterization of the removal mechanisms participating in the aeration revealed that volatilization, co-precipitation and biodegradation contributed to the process. These findings were supported by bacterial metabolite analyses, phospholipid fatty acid analysis, qPCR of representatives of the degradative genes and detailed characterization of the formed precipitate using Mossbauer spectroscopy and scanning electron microscopy. Further tests were carried out in a continuous arrangement directly connected to the wells already present in the locality. The results documented the feasibility of combination of the photo-reactor employing UV/H2O2 together with aeration pretreatment for 4 months, where the overall decontamination efficiency ranged from 72% to 99% of the pharmaceuticals. We recorded even better results for the monoaromatics decontamination except for one month, when we encountered some technical problems with the aeration pump. This demonstrated the necessity of using the aeration step. Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2018
Počet záznamů: 1