Two decades of heavy metal fluctuations in wastewater sludge in Lithuania with evolving trends and implications for treatment efficiency

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F25%3A10255933" target="_blank" >RIV/61989100:27710/25:10255933 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.gexplo.2024.107642" target="_blank" >https://doi.org/10.1016/j.gexplo.2024.107642</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.gexplo.2024.107642" target="_blank" >10.1016/j.gexplo.2024.107642</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Two decades of heavy metal fluctuations in wastewater sludge in Lithuania with evolving trends and implications for treatment efficiency

Popis výsledku v původním jazyce

This study evaluates the temporal trends and seasonal variations in heavy metal concentrations within sewage sludge from the Kaunas wastewater treatment plant in Lithuania between 2000 and 2022. It integrates two decades of data with detailed seasonal analyses for 2021 and 2022, providing a comprehensive view of both longterm trends and short-term fluctuations. Monthly wastewater and sludge samples were collected, and concentrations of Cr, Zn, Hg, Cd, Ni, Cu, and Pb were analyzed using atomic absorption spectrometry. Statistical evaluations of temporal and seasonal data were conducted to identify trends and correlations between metal concentrations and external factors. Significant declines were bserved in Cr, Pb, and Hg levels, highlighting the effectiveness of regulatory measures and treatment improvements. However, Zn and Cu concentrations remain elevated, posing challenges for sludge management and reuse. Seasonal pikes in Zn and Cr, particularly in May-July and October-December, were linked to industrial activities and stormwater runoff. The study also explores Lithuania&apos;s recent regulatory changes that permit higher Zn concentrations in sludge for agricultural use, reflecting evolving sludge management strategies.

Název v anglickém jazyce

Two decades of heavy metal fluctuations in wastewater sludge in Lithuania with evolving trends and implications for treatment efficiency

Popis výsledku anglicky

This study evaluates the temporal trends and seasonal variations in heavy metal concentrations within sewage sludge from the Kaunas wastewater treatment plant in Lithuania between 2000 and 2022. It integrates two decades of data with detailed seasonal analyses for 2021 and 2022, providing a comprehensive view of both longterm trends and short-term fluctuations. Monthly wastewater and sludge samples were collected, and concentrations of Cr, Zn, Hg, Cd, Ni, Cu, and Pb were analyzed using atomic absorption spectrometry. Statistical evaluations of temporal and seasonal data were conducted to identify trends and correlations between metal concentrations and external factors. Significant declines were bserved in Cr, Pb, and Hg levels, highlighting the effectiveness of regulatory measures and treatment improvements. However, Zn and Cu concentrations remain elevated, posing challenges for sludge management and reuse. Seasonal pikes in Zn and Cr, particularly in May-July and October-December, were linked to industrial activities and stormwater runoff. The study also explores Lithuania&apos;s recent regulatory changes that permit higher Zn concentrations in sludge for agricultural use, reflecting evolving sludge management strategies.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20700 - Environmental engineering

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Geochemical Exploration

ISSN

0375-6742

e-ISSN

1879-1689

Svazek periodika

107642

Číslo periodika v rámci svazku

269

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

107642

Kód UT WoS článku

001367117500001

EID výsledku v databázi Scopus

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