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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25006096%3A_____%2F17%3AN0000003" target="_blank" >RIV/25006096:_____/17:N0000003 - isvavai.cz</a>

Alternative codes found

RIV/61388971:_____/17:00479696 RIV/60460709:41330/17:73850 RIV/46747885:24620/17:00004527 RIV/00216208:11310/17:10364633

Result on the web

<a href="http://dx.doi.org/10.1016/j.scitotenv.2017.06.193" target="_blank" >http://dx.doi.org/10.1016/j.scitotenv.2017.06.193</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2017.06.193" target="_blank" >10.1016/j.scitotenv.2017.06.193</a>

Result language

angličtina

Original language name

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

Original language description

The present study describes a pilot remediation test of a commingled plume consisting of BTEX, chlorinated pollutants and pharmaceuticals using a combination of remediation approaches consisting of a pump and treat system with 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 removal of monoaromatics and chlorinated pollutants in situ. Especially in combination with the injection of calcium peroxide, the conditions facilitated bacterial in situ biodegradation of the pollutants. Mean groundwater concentrations of benzene dropped from 1349 μg·L-1prior to the test to 3 μg·L-1 after 3 months of the calcium peroxide injections; in case of monochlorobenzene from 1545 μg·L-1 to 36 μg·L-1 and toluene 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 the toluene and 88 % of the chlorobenzene bound to the soil were removed during the pilot test and benzene was removed almost completely. On the other hand although the psychopharmaceuticals were effectively removed from the treated water by the employed advanced oxidation process, their concentrations in the groundwater remained stagnant due to their inflow from surroundings and absence of their in situ degradation.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

20802 - Bioremediation, diagnostic biotechnologies (DNA chips and biosensing devices) in environmental management

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Science of the Total Environment

ISSN

0048-9697

e-ISSN

—

Volume of the periodical

2017

Issue of the periodical within the volume

607-608

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

15

Pages from-to

1451-1465

UT code for WoS article

000408755300145

EID of the result in the Scopus database

2-s2.0-85025617268