Assessment of biodegradation potential at a site contaminated by a mixture of BTEX, chlorinated pollutants and pharmaceuticals using passive sampling methods; Case study

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dc.contributor.authorLhotský Ondřejcs
dc.contributor.authorKrákorová Evacs
dc.contributor.authorLinhartová Luciecs
dc.contributor.authorKřesinová Zdenacs
dc.contributor.authorSteinová Janacs
dc.contributor.authorDvořák Lukášcs
dc.contributor.authorRodsand Torgeircs
dc.contributor.authorFilipová Alenacs
dc.contributor.authorKroupová Kristýnacs
dc.contributor.authorWimmerová Lenkacs
dc.contributor.authorKukačka Jancs
dc.contributor.authorCajthaml Tomášcs
dc.date.accessioned2018-09-25T12:13:14Z
dc.date.available2018-09-25T12:13:14Z
dc.date.issued2017cs
dc.description.abstractThe present study describes a pilot remediation test of a co-mingled plume containing BTEX, chlorinated pollutants and pharmaceuticals. Remediation was attempted using a combination of various approaches, including a pump and treat system applying an advanced oxidation process and targeted direct push injections of calcium peroxide. The remediation process was monitored intensively and extensively throughout the pilot test using various conventional and passive sampling methods, including next-generation amplicon sequencing. The results showed that the injection of oxygen-saturated treated water with residual hydrogen peroxide and elevated temperature enhanced the in situ removal of monoaromatics and chlorinated pollutants. In particular, in combination with the injection of calcium peroxide, the conditions facilitated the in situ bacterial biodegradation of the pollutants. The mean groundwater concentration of benzene decreased from 1349 μg·L− 1 prior to the test to 3 μg·L− 1 within 3 months after the calcium peroxide injections; additionally, monochlorobenzene decreased from 1545 μg·L− 1 to 36 μg·L− 1, and toluene decreased from 143 μg·L− 1 to 2 μg·L− 1. Furthermore, significant degradation of the contaminants bound to the soil matrix in less permeable zones was observed. Based on a developed 3D model, 90% of toluene and 88% of chlorobenzene bound to the soil were removed during the pilot test, and benzene was removed almost completely. On the other hand, the psychopharmaceuticals were effectively removed by the employed advanced oxidation process only from the treated water, and their concentration in groundwater remained stagnant due to inflow from the surroundings and their absence of in situ degradation. The employment of passive sampling techniques, including passive diffusion bags (PDB) for volatile organic pollutants and their respective transformation products, polar organic compound integrative samplers (POCIS) for the pharmaceuticals and in situ soil microcosms for microbial community analysis, was proven to be suitable for monitoring remediation in saturated zones.en
dc.format.extent15cs
dc.identifier.doi10.1016/j.scitotenv.2017.06.193
dc.identifier.issn0048-9697cs
dc.identifier.urihttps://dspace.tul.cz/handle/15240/31071
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0048969717316121?via%3Dihub
dc.language.isoengcs
dc.publisherELSEVIER SCIENCE BVcs
dc.publisher.cityAMSTERDAMcs
dc.relation.ispartofseries1cs
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S0048969717316121cs
dc.subjectPharmaceuticalscs
dc.subjectBTEXcs
dc.subjectgroundwatercs
dc.subjectbiodegradationcs
dc.titleAssessment of biodegradation potential at a site contaminated by a mixture of BTEX, chlorinated pollutants and pharmaceuticals using passive sampling methods; Case studyen
local.citation.epage1451-1465cs
local.citation.spage1451-1465cs
local.identifier.publikace4527
local.identifier.wok408755300145en
local.relation.issueDEC 31cs
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