Composting of waste biomass into substrates with enhanced humic acid content and optimized water holding capacity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F25%3A10258126" target="_blank" >RIV/61989100:27710/25:10258126 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61988987:17310/25:A2603B4N

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S221334372501913X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S221334372501913X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2025.117217" target="_blank" >10.1016/j.jece.2025.117217</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Composting of waste biomass into substrates with enhanced humic acid content and optimized water holding capacity

Popis výsledku v původním jazyce

Biomass waste represents a renewable source of nutrients usable in agriculture. However, sewage sludge (SS) can be used for this purpose only to a limited extent due to the presence of pollutants. On the other hand, SS is a valuable source of organic matter and nutrients, particularly carbon, nitrogen, and phosphorus. This work aims to determine how the co-composting of SS with other waste biomass influences the presence of pollutants and accumulation of humic acids (HAs) in final substrates, and how the presence of HAs affects plant growth and soil water retention. The experiments consisted of full-scale composting trials using organic mixtures with SS and five different materials (wood chips, wood fiber, biodegradable waste, grass and sandy-clay soil). The mixtures underwent microbial co-composting over 120 days. Temperature was monitored over the entire composting process, along with any changes in the concentration of biologically relevant elements, including heavy metals. The levels of polycyclic aromatic hydrocarbons and HAs were also tracked. Additionally, the final substrates were subjected to growth tests with spring barley. Substrates containing wood chips showed superior performance in terms of HAs content and plant growth parameters. Substrates enriched with HAs exhibited lower accumulation of PAHs and heavy metals, increased water retention and enhanced photosynthetic efficiency of plants under controlled drought conditions. This study highlights the potential of tailored co-composting processes to utilize waste biomass to produce substrates that not only mitigate soil degradation but also enhance agricultural sustainability.

Název v anglickém jazyce

Composting of waste biomass into substrates with enhanced humic acid content and optimized water holding capacity

Popis výsledku anglicky

Biomass waste represents a renewable source of nutrients usable in agriculture. However, sewage sludge (SS) can be used for this purpose only to a limited extent due to the presence of pollutants. On the other hand, SS is a valuable source of organic matter and nutrients, particularly carbon, nitrogen, and phosphorus. This work aims to determine how the co-composting of SS with other waste biomass influences the presence of pollutants and accumulation of humic acids (HAs) in final substrates, and how the presence of HAs affects plant growth and soil water retention. The experiments consisted of full-scale composting trials using organic mixtures with SS and five different materials (wood chips, wood fiber, biodegradable waste, grass and sandy-clay soil). The mixtures underwent microbial co-composting over 120 days. Temperature was monitored over the entire composting process, along with any changes in the concentration of biologically relevant elements, including heavy metals. The levels of polycyclic aromatic hydrocarbons and HAs were also tracked. Additionally, the final substrates were subjected to growth tests with spring barley. Substrates containing wood chips showed superior performance in terms of HAs content and plant growth parameters. Substrates enriched with HAs exhibited lower accumulation of PAHs and heavy metals, increased water retention and enhanced photosynthetic efficiency of plants under controlled drought conditions. This study highlights the potential of tailored co-composting processes to utilize waste biomass to produce substrates that not only mitigate soil degradation but also enhance agricultural sustainability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20400 - Chemical engineering

Projekt

<a href="/cs/project/QK21010300" target="_blank" >QK21010300: Optimalizace technologie úpravy kalů z komunálních čistíren odpadních vod s ohledem na jejich chemické a mikrobiální složení a schopnost zadržovat vodu s cílem jejich bezpečného využití na zemědělském a lesním půdním fondu</a><br>

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

Journal of Environmental Chemical Engineering

ISSN

2213-2929

e-ISSN

2213-3437

Svazek periodika

13

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

117217

Kód UT WoS článku

001500357000001

EID výsledku v databázi Scopus

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