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

Result code in 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>

Alternative codes found

RIV/61988987:17310/25:A2603B1C

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

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

20400 - Chemical engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

Chemical engineering journal

ISSN

1385-8947

e-ISSN

1873-3212

Volume of the periodical

512

Issue of the periodical within the volume

15 May 2025

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

162292

UT code for WoS article

001465022400001

EID of the result in the Scopus database

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