Effect of vermicomposting of aquaculture fish sludge with lettuce residue and wastepaper on potentially toxic elements and persistent organic pollutants

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F25%3A102367" target="_blank" >RIV/60460709:41210/25:102367 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0269749125014216?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0269749125014216?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envpol.2025.127048" target="_blank" >10.1016/j.envpol.2025.127048</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of vermicomposting of aquaculture fish sludge with lettuce residue and wastepaper on potentially toxic elements and persistent organic pollutants

Popis výsledku v původním jazyce

The growing aquaculture industry generates substantial amounts of waste, necessitating sustainable valorization methods. This study assessed vermicomposting of fish sludge from recirculating aquaculture systems, combined with aquaponic lettuce residues and wastepaper egg boxes, using Eisenia andrei earthworms. Four substrate variants—with and without earthworms—were evaluated over 173 days, monitoring thermal, chemical, and biological parameters to assess organic matter transformation and the fate of potentially toxic elements (As, Cd, Cr, Cu, Mo, Ni, Pb, Zn). All screened polychlorinated compounds remained below detection limits. Polycyclic aromatic hydrocarbons levels fell by 85–90 % in paper-rich treatments. Earthworm activity significantly enhanced organic matter mineralization, reducing volatile solids, C, and S content. Activity of ß-D-glucosidase, acid phosphatase, and alanine aminopeptidase peaked at day 35, with values up to 900 µmol MUF/g/h, and declined by ~70 % by day 173, indicating vermicompost stabilization. Temperature trends demonstrated earthworms’ role in regulating microbial thermogenesis. Vermicompost maturation was confirmed by favorable changes; variants with earthworms achieved a reduction in C:N ratio by 14–66 %, compared to 26–68 % in variants without earthworms. Significant declines in total and bioavailable fractions of As, Cd, Pb, and Zn were observed, especially with earthworms. Bioaccumulation confirmed metal uptake by E. andrei, the highest for Zn – more than 100 mg/kg dw. These findings unequivocally demonstrate vermicomposting as an effective and sustainable approach to recycling aquaculture and associated wastes, minimizing ecological risks, and generating safe, stabilized vermicompost for agricultural application.

Název v anglickém jazyce

Effect of vermicomposting of aquaculture fish sludge with lettuce residue and wastepaper on potentially toxic elements and persistent organic pollutants

Popis výsledku anglicky

The growing aquaculture industry generates substantial amounts of waste, necessitating sustainable valorization methods. This study assessed vermicomposting of fish sludge from recirculating aquaculture systems, combined with aquaponic lettuce residues and wastepaper egg boxes, using Eisenia andrei earthworms. Four substrate variants—with and without earthworms—were evaluated over 173 days, monitoring thermal, chemical, and biological parameters to assess organic matter transformation and the fate of potentially toxic elements (As, Cd, Cr, Cu, Mo, Ni, Pb, Zn). All screened polychlorinated compounds remained below detection limits. Polycyclic aromatic hydrocarbons levels fell by 85–90 % in paper-rich treatments. Earthworm activity significantly enhanced organic matter mineralization, reducing volatile solids, C, and S content. Activity of ß-D-glucosidase, acid phosphatase, and alanine aminopeptidase peaked at day 35, with values up to 900 µmol MUF/g/h, and declined by ~70 % by day 173, indicating vermicompost stabilization. Temperature trends demonstrated earthworms’ role in regulating microbial thermogenesis. Vermicompost maturation was confirmed by favorable changes; variants with earthworms achieved a reduction in C:N ratio by 14–66 %, compared to 26–68 % in variants without earthworms. Significant declines in total and bioavailable fractions of As, Cd, Pb, and Zn were observed, especially with earthworms. Bioaccumulation confirmed metal uptake by E. andrei, the highest for Zn – more than 100 mg/kg dw. These findings unequivocally demonstrate vermicomposting as an effective and sustainable approach to recycling aquaculture and associated wastes, minimizing ecological risks, and generating safe, stabilized vermicompost for agricultural application.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/QK21010207" target="_blank" >QK21010207: Diverzifikace a posílení konkurenceschopnosti akvakultury podporou akvaponie jako inovativní zemědělské technologie produkce potravin</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Environmental Pollution

ISSN

0269-7491

e-ISSN

1873-6424

Svazek periodika

385

Číslo periodika v rámci svazku

November 2025

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

001568161300001

EID výsledku v databázi Scopus

2-s2.0-105014800824