Heavy metals adsorption using CDW adsorbents: A sustainable path for water purification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F25%3A00013671" target="_blank" >RIV/46747885:24620/25:00013671 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.hazadv.2025.100883" target="_blank" >https://doi.org/10.1016/j.hazadv.2025.100883</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.hazadv.2025.100883" target="_blank" >10.1016/j.hazadv.2025.100883</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Heavy metals adsorption using CDW adsorbents: A sustainable path for water purification

Popis výsledku v původním jazyce

Effective removal of heavy metals from water is crucial for human health and environmental protection, and adsorbents provide a sustainable, cost-effective treatment solution. This study is the first to investigate Low-Density Concrete (LDC) for removing selected heavy metals (Pb2+, Co2+, and Mn2+) from water. The adsorbent was characterised using X-ray fluorescence (XRF), Fourier Transform Infrared spectrophotometry (FTIR), Brunauer-Emmett-Teller (BET) analysis, X-ray diffraction (XRD) analysis, and Field Emission Scanning Electron Microscopy (FE-SEM). The One-Factor-at-A-Time (OFAT) method optimised the essential parameters affecting the metal removal. Eight different isotherm models were used to determine the adsorption parameters and elucidate the associated sorption mechanism. Then, its kinetic behavior and selectivity for decontamination were analyzed. The outcomes demonstrated that the adsorption capacities for Pb2+, Mn2+, and Co2+ were 43.1, 23.5, and 15.2 mg g⁻¹, respectively. Moreover, the second-order kinetic rate constants for Pb²⁺, Mn²⁺, and Co²⁺ were determined to be 1.99, 0.076, and 0.49 g mg⁻¹ min⁻¹, respectively. As a novel contribution, the regeneration process of heavy metal adsorption is modelled by Thales-based theorem. In this study, synthetic wastewater was used, while regeneration conditions simulated industrial effluents to enhance real-world relevance. Finally, the applied construction and demolition waste (CDW) adsorbent is evaluated by Sustainable Material Management, EPA models. The isothermal modelling illustrated that the adsorption of Pb2+, Co2+, and Mn2+ onto LDC wastes is done physically and on the heterogeneous surface as multilayer adsorption. The Thales-based model demonstrated that after nine cycles of adsorption and formal regeneration with acid, the LDC adsorbent consistently maintained lead concentrations below the World Health Organization (WHO) standard.

Název v anglickém jazyce

Heavy metals adsorption using CDW adsorbents: A sustainable path for water purification

Popis výsledku anglicky

Effective removal of heavy metals from water is crucial for human health and environmental protection, and adsorbents provide a sustainable, cost-effective treatment solution. This study is the first to investigate Low-Density Concrete (LDC) for removing selected heavy metals (Pb2+, Co2+, and Mn2+) from water. The adsorbent was characterised using X-ray fluorescence (XRF), Fourier Transform Infrared spectrophotometry (FTIR), Brunauer-Emmett-Teller (BET) analysis, X-ray diffraction (XRD) analysis, and Field Emission Scanning Electron Microscopy (FE-SEM). The One-Factor-at-A-Time (OFAT) method optimised the essential parameters affecting the metal removal. Eight different isotherm models were used to determine the adsorption parameters and elucidate the associated sorption mechanism. Then, its kinetic behavior and selectivity for decontamination were analyzed. The outcomes demonstrated that the adsorption capacities for Pb2+, Mn2+, and Co2+ were 43.1, 23.5, and 15.2 mg g⁻¹, respectively. Moreover, the second-order kinetic rate constants for Pb²⁺, Mn²⁺, and Co²⁺ were determined to be 1.99, 0.076, and 0.49 g mg⁻¹ min⁻¹, respectively. As a novel contribution, the regeneration process of heavy metal adsorption is modelled by Thales-based theorem. In this study, synthetic wastewater was used, while regeneration conditions simulated industrial effluents to enhance real-world relevance. Finally, the applied construction and demolition waste (CDW) adsorbent is evaluated by Sustainable Material Management, EPA models. The isothermal modelling illustrated that the adsorption of Pb2+, Co2+, and Mn2+ onto LDC wastes is done physically and on the heterogeneous surface as multilayer adsorption. The Thales-based model demonstrated that after nine cycles of adsorption and formal regeneration with acid, the LDC adsorbent consistently maintained lead concentrations below the World Health Organization (WHO) standard.

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

R - Projekt Ramcoveho programu EK

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of hazardous materials advances>

ISSN

2772-4166

e-ISSN

—

Svazek periodika

20

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

18

Strana od-do

—

Kód UT WoS článku

001576212400001

EID výsledku v databázi Scopus

2-s2.0-105016402712