Innovative in situ remediation of mine waters using a layered double hydroxide-biochar composite.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F22%3A00547861" target="_blank" >RIV/60077344:_____/22:00547861 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/22:00547861 RIV/60460709:41330/22:85812 RIV/60461373:22320/22:43924385 RIV/61989592:15640/22:73618796

Výsledek na webu

<a href="http://hdl.handle.net/11104/0324028" target="_blank" >http://hdl.handle.net/11104/0324028</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jhazmat.2021.127136" target="_blank" >10.1016/j.jhazmat.2021.127136</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Innovative in situ remediation of mine waters using a layered double hydroxide-biochar composite.

Popis výsledku v původním jazyce

The current demand for alternative water sources requires the incorporation of low-cost composites in remediation technologies. These represent a sustainable alternative to more expensive, commercially used adsorbents. The main objective of this comprehensive field-scale study was to incorporate the layered double hydroxides (LDHs) into the hybrid biochar-based composites and apply an innovative material to remediate As/Sb-rich mine waters. The presence of hydrous Fe oxides (HFOs) within the composite enhanced the total adsorption efficiency of the composite for As(V) and Sb(V). The kinetic data fitted a pseudo-second order model. Equilibrium experiments confirmed that the composite had a stronger interaction with As(V) than with Sb(V). The efficient removal of As(V) from mine water was achieved in both batch and continuous flow column systems, reaching up to 98% and 80%, respectively. Sb(V) showed different behavior to As(V) during mine water treatment, reaching adsorption efficiencies of up to 39% and 26% in batch and column experiments, respectively. The migration of Sb(V) in mine water was mostly attributed to its dispersion before it was able to show affinity to the composite. In general, the proposed column technology is suitable for the field remediation of small volumes of contaminated water, and thus has significant commercial potential.

Název v anglickém jazyce

Innovative in situ remediation of mine waters using a layered double hydroxide-biochar composite.

Popis výsledku anglicky

The current demand for alternative water sources requires the incorporation of low-cost composites in remediation technologies. These represent a sustainable alternative to more expensive, commercially used adsorbents. The main objective of this comprehensive field-scale study was to incorporate the layered double hydroxides (LDHs) into the hybrid biochar-based composites and apply an innovative material to remediate As/Sb-rich mine waters. The presence of hydrous Fe oxides (HFOs) within the composite enhanced the total adsorption efficiency of the composite for As(V) and Sb(V). The kinetic data fitted a pseudo-second order model. Equilibrium experiments confirmed that the composite had a stronger interaction with As(V) than with Sb(V). The efficient removal of As(V) from mine water was achieved in both batch and continuous flow column systems, reaching up to 98% and 80%, respectively. Sb(V) showed different behavior to As(V) during mine water treatment, reaching adsorption efficiencies of up to 39% and 26% in batch and column experiments, respectively. The migration of Sb(V) in mine water was mostly attributed to its dispersion before it was able to show affinity to the composite. In general, the proposed column technology is suitable for the field remediation of small volumes of contaminated water, and thus has significant commercial potential.

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/TJ01000015" target="_blank" >TJ01000015: Aplikace odpadních modifikovaných biomateriálů pro čištění důlních vod</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Journal of Hazardous Materials

ISSN

0304-3894

e-ISSN

1873-3336

Svazek periodika

424

Číslo periodika v rámci svazku

FEB 15

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

127136

Kód UT WoS článku

000711685700007

EID výsledku v databázi Scopus

2-s2.0-85116647544