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

Kód výsledku v 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>

Nalezeny alternativní kódy

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

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20801 - Environmental biotechnology

Projekt

<a href="/cs/project/TF02000027" target="_blank" >TF02000027: Výroba paliva z čistírenských kalů metodou biosušení</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Ecological Engineering

ISSN

0925-8574

e-ISSN

1872-6992

Svazek periodika

—

Číslo periodika v rámci svazku

127

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

212-219

Kód UT WoS článku

000455632500022

EID výsledku v databázi Scopus

—