Biological pretreatment of anaerobic digestion solid by-product with white rot fungi: Assessment of digestate delignification and investigation of process parameters improving the biodegradation performance of sludge

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F25%3A10257585" target="_blank" >RIV/61989100:27710/25:10257585 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61988987:17310/25:A2603B1C

Výsledek na webu

<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:001465022400001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:001465022400001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2025.162292" target="_blank" >10.1016/j.cej.2025.162292</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Biological pretreatment of anaerobic digestion solid by-product with white rot fungi: Assessment of digestate delignification and investigation of process parameters improving the biodegradation performance of sludge

Popis výsledku v původním jazyce

Biological treatment of digestate with white rot fungi (WRF) was implemented to retrieve unexploited organic loads in the spent anaerobic digestion (AD) by-product for methane recovery. Fungal strains of Irpex lacteus, Pleurotus ostreatus and Dichomitus squalens grew on the solid digestate and secreted ligninolytic enzymes such as lignin peroxidase, laccase and manganese peroxidase in different degrees to delignify the sludge. Pretreatment either with selective or non-selective WRF for 20 days raised the residual methane production potential of digestate (0.119 m3kgVS-1 ) to levels (0.199-0.256 m3kgVS-1 ) comparable to that of traditional AD substrates. The greatest improvement (2.15-fold) was accomplished with a 20-day pretreatment of digestate with D. squalens. Increasing inoculation time to 30 days had negligible effect on material digestibility when digestate modified by selective fungi. Prolonged pretreatment of digestate with the non-selective I. lacteus provided different results leading to a rise in methane production by 1.24-fold, however, the increment was lower than that achieved with a 20-day pretreatment (1.67-fold) due to extended loss of cellulose. Methane generation enhanced with pretreatment regardless of digestate type, however, the improvement relied on the amount of lipids and proteins supplied by the fungus when the modified sludge contained a small carbohydrate fraction and on the amount of lipids and the available for digestion cellulose when the pretreated digestate was rich in carbohydrates. The results showed the possibility of WRF, especially of D. squalens to modify complex and low-biodegradable structures in an AD by-product converting it into a material with notable methane generation potential.

Název v anglickém jazyce

Biological pretreatment of anaerobic digestion solid by-product with white rot fungi: Assessment of digestate delignification and investigation of process parameters improving the biodegradation performance of sludge

Popis výsledku anglicky

Biological treatment of digestate with white rot fungi (WRF) was implemented to retrieve unexploited organic loads in the spent anaerobic digestion (AD) by-product for methane recovery. Fungal strains of Irpex lacteus, Pleurotus ostreatus and Dichomitus squalens grew on the solid digestate and secreted ligninolytic enzymes such as lignin peroxidase, laccase and manganese peroxidase in different degrees to delignify the sludge. Pretreatment either with selective or non-selective WRF for 20 days raised the residual methane production potential of digestate (0.119 m3kgVS-1 ) to levels (0.199-0.256 m3kgVS-1 ) comparable to that of traditional AD substrates. The greatest improvement (2.15-fold) was accomplished with a 20-day pretreatment of digestate with D. squalens. Increasing inoculation time to 30 days had negligible effect on material digestibility when digestate modified by selective fungi. Prolonged pretreatment of digestate with the non-selective I. lacteus provided different results leading to a rise in methane production by 1.24-fold, however, the increment was lower than that achieved with a 20-day pretreatment (1.67-fold) due to extended loss of cellulose. Methane generation enhanced with pretreatment regardless of digestate type, however, the improvement relied on the amount of lipids and proteins supplied by the fungus when the modified sludge contained a small carbohydrate fraction and on the amount of lipids and the available for digestion cellulose when the pretreated digestate was rich in carbohydrates. The results showed the possibility of WRF, especially of D. squalens to modify complex and low-biodegradable structures in an AD by-product converting it into a material with notable methane generation potential.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20400 - Chemical engineering

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

2025

Kód důvěrnosti údajů

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

Název periodika

Chemical engineering journal

ISSN

1385-8947

e-ISSN

1873-3212

Svazek periodika

512

Číslo periodika v rámci svazku

15 May 2025

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

12

Strana od-do

162292

Kód UT WoS článku

001465022400001

EID výsledku v databázi Scopus

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