Biodegradation of PCBs in contaminated water using spent oyster mushroom substrate and a trickle-bed bioreactor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F20%3A00524386" target="_blank" >RIV/61388971:_____/20:00524386 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/20:10414082

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0043135419310486" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0043135419310486</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.watres.2019.115274" target="_blank" >10.1016/j.watres.2019.115274</a>

Result language

angličtina

Original language name

Biodegradation of PCBs in contaminated water using spent oyster mushroom substrate and a trickle-bed bioreactor

Original language description

Due to their persistence, polychlorinated biphenyls (PCBs) represent a group of important environmental pollutants, but conventional physicochemical decontamination techniques for their removal are usually expensive. The main aim of this work was to develop a cost-effective method for PCB bioremediation, focusing on contaminated water and utilizing the well-known degradation capability of Pleurotus ostreatus (the oyster mushroom). For this purpose, the conditions of several laboratory-scale reactors (working volume 1 L) were optimized. Spent oyster mushroom substrate obtained from a commercial farm was used as a fungal inoculum and growth substrate. The highest degradation efficiency (87%) was recorded with a continuous low-flow setup, which was subsequently scaled up (working volume 500 L) and used for the treatment of 4000 L of real contaminated groundwater containing 0.1-1 mu g/L of PCBs. This trickle-bed pilot-scale bioreactor was able to remove 82, 80, 65, and 30-50% of di-, tri-, tetra- and pentachlorinated PCB congeners, respectively. No degradation was observed for hexa- or heptachlorinated congeners. Multiple mono- and dichlorobenzoic acids (CBAs) were identified as transformation products by mass spectrometry, confirming the role of biodegradation in PCB removal. A Vibrio fischeri bioluminescence inhibition test revealed slight ecotoxicity of the primary reactor effluent (sampling after 24 h), which was quickly suppressed once the effluent passed through the reactor for the second time. Moreover, no other effluent exhibited toxicity for the rest of the experiment (71 days in total). Microbial analyses (phospholipid fatty acid analysis and next-generation sequencing) showed that P. ostreatus was able to degrade PCBs in the presence of an abundance of other fungal species as well as aerobic and anaerobic bacteria.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20801 - Environmental biotechnology

Project

<a href="/en/project/TE01020218" target="_blank" >TE01020218: Environmental friendly nanotechnologies and biotechnologies in water and soil treatment</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Water Research

ISSN

0043-1354

e-ISSN

—

Volume of the periodical

170

Issue of the periodical within the volume

March 1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

115274

UT code for WoS article

000509611300009

EID of the result in the Scopus database

2-s2.0-85074970350