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

Kód výsledku v 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>

Nalezeny alternativní kódy

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

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

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

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Science of the Total Environment

ISSN

0048-9697

e-ISSN

—

Svazek periodika

2017

Číslo periodika v rámci svazku

607-608

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

1451-1465

Kód UT WoS článku

000408755300145

EID výsledku v databázi Scopus

2-s2.0-85025617268