An efficient sequential method for enhanced landfill leachate treatment and detoxification: Electrocoagulation/permanganate, peroxymonosulfate-based process, and electro-peroxone

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F25%3A00014120" target="_blank" >RIV/46747885:24620/25:00014120 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jenvman.2025.125785" target="_blank" >https://doi.org/10.1016/j.jenvman.2025.125785</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jenvman.2025.125785" target="_blank" >10.1016/j.jenvman.2025.125785</a>

Jazyk výsledku

angličtina

Název v původním jazyce

An efficient sequential method for enhanced landfill leachate treatment and detoxification: Electrocoagulation/permanganate, peroxymonosulfate-based process, and electro-peroxone

Popis výsledku v původním jazyce

This study investigates the electrocoagulation/permanganate (EC/PM) process as a pre-treatment, followed by UV-activated peroxymonosulfate (PMS) and electro-peroxone (EP) treatments. This sequence is designed to effectively mineralize organic matter. Notably, PM was integrated into the EC process for the first time to enhance removal efficiency. The iron sludge generated from the EC/PM process (sludge-derived electrocoagulation; SDEC) was repurposed as a cost-effective source of iron oxide in the PMS/SDEC/UV treatment. Treatment optimization was achieved by adjusting the main operating parameters. A comprehensive analysis was conducted to assess the biodegradability and toxicity of the leachate post-treatment, including measurements of COD, BOD, TOC, ammonia levels, average oxidation state, biodegradability, organic carbon content, and spectroscopic methods. The results demonstrated substantial removal efficiencies across the treatment stages, with 98.9 % for COD, 94.9 % for BOD, 96.4 % for TOC, and 97.7 % for ammonia. Spectroscopic changes indicated that the leachate was broken down into smaller, more oxidized, and highly acidic molecules with an increased aliphatic structure while effectively eliminating aromatic compounds. The BOD5/COD ratio improved to 0.55, indicating that the treated leachate is suitable for biological treatment processes with significantly reduced toxicity. Overall, the sequence of treatment processes yielded promising results.

Název v anglickém jazyce

An efficient sequential method for enhanced landfill leachate treatment and detoxification: Electrocoagulation/permanganate, peroxymonosulfate-based process, and electro-peroxone

Popis výsledku anglicky

This study investigates the electrocoagulation/permanganate (EC/PM) process as a pre-treatment, followed by UV-activated peroxymonosulfate (PMS) and electro-peroxone (EP) treatments. This sequence is designed to effectively mineralize organic matter. Notably, PM was integrated into the EC process for the first time to enhance removal efficiency. The iron sludge generated from the EC/PM process (sludge-derived electrocoagulation; SDEC) was repurposed as a cost-effective source of iron oxide in the PMS/SDEC/UV treatment. Treatment optimization was achieved by adjusting the main operating parameters. A comprehensive analysis was conducted to assess the biodegradability and toxicity of the leachate post-treatment, including measurements of COD, BOD, TOC, ammonia levels, average oxidation state, biodegradability, organic carbon content, and spectroscopic methods. The results demonstrated substantial removal efficiencies across the treatment stages, with 98.9 % for COD, 94.9 % for BOD, 96.4 % for TOC, and 97.7 % for ammonia. Spectroscopic changes indicated that the leachate was broken down into smaller, more oxidized, and highly acidic molecules with an increased aliphatic structure while effectively eliminating aromatic compounds. The BOD5/COD ratio improved to 0.55, indicating that the treated leachate is suitable for biological treatment processes with significantly reduced toxicity. Overall, the sequence of treatment processes yielded promising results.

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Environmental Management>

ISSN

0301-4797

e-ISSN

—

Svazek periodika

388

Číslo periodika v rámci svazku

JUL

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

001500320900002

EID výsledku v databázi Scopus

2-s2.0-105005945714