Micropollutant biodegradation and the hygienization potential of biodrying as a pretreatment method prior to the application of sewage sludge in agriculture

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25006096%3A_____%2F18%3AN0000013" target="_blank" >RIV/25006096:_____/18:N0000013 - isvavai.cz</a>

Alternative codes found

RIV/61388971:_____/19:00504294 RIV/60460709:41330/19:79654 RIV/00216208:11310/19:10391438

Result on the web

<a href="https://doi.org/10.1016/j.ecoleng.2018.11.025" target="_blank" >https://doi.org/10.1016/j.ecoleng.2018.11.025</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ecoleng.2018.11.025" target="_blank" >10.1016/j.ecoleng.2018.11.025</a>

Result language

angličtina

Original language name

Micropollutant biodegradation and the hygienization potential of biodrying as a pretreatment method prior to the application of sewage sludge in agriculture

Original language description

To date, the process of biodrying has been used for the drying of biodegradable waste materials to produce fuel. However, different applications other than incineration also exist for dried materials: e.g., sewage sludge could be used as a fertilizer. This paper investigates the potential of biodrying as a pretreatment method prior to the application of sewage sludge in agriculture. Experiments were performed in two biodrying reactors with operational volumes of 100 dm3 using two different aeration regimes to compare the efficiency of the two process alternatives: i) mesophilic conditions and ii) a full composting temperature profile including the thermophilic phase. The influence of the two different operating regimes on the elimination of pathogens and selected pharmaceuticals and personal care products (PPCPs) was investigated. Phospholipid fatty acid (PLFA) analysis was employed to identify the main groups of microorganisms responsible for the potential elimination of the detected micropollutants. The results showed that antibiotic activity was completely eliminated under both the operational regimes. Bisphenol-A (BPA) and irgasan (IRG) were detected in the untreated sludge, and the elimination efficiency for these substances was greater in the reactor with the mesophilic treatment (max. 88.3% for BPA and 47.7% for IRG) than under thermophilic conditions (60.1% for BPA and no significant removal of IRG). PLFA analysis indicates that Actinobacteria could be responsible for the biodegradation. Of the two indicator microorganisms used for the verification of the efficiency of the improvement in hygiene, only E. coli were completely eliminated under both regimes, while the enterococci content was reduced by 4 orders of magnitude. The results of this study document that the biodrying process possesses the potential for the removal of micropollutants from sewage sludge and might serve as a pretreatment process prior to using the treated sludge in agriculture.

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

20801 - Environmental biotechnology

Project

<a href="/en/project/TF02000027" target="_blank" >TF02000027: Production of solid fuel from waste sludge using biodrying method</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Ecological Engineering

ISSN

0925-8574

e-ISSN

1872-6992

Volume of the periodical

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Issue of the periodical within the volume

127

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

212-219

UT code for WoS article

000455632500022

EID of the result in the Scopus database

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