Advanced Cr(VI) sorption properties of activated carbon produced via pyrolysis of the "Posidonia oceanica" seagrass

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F21%3A10247714" target="_blank" >RIV/61989100:27640/21:10247714 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15640/21:73607339

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0304389420322640?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0304389420322640?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jhazmat.2020.124274" target="_blank" >10.1016/j.jhazmat.2020.124274</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Advanced Cr(VI) sorption properties of activated carbon produced via pyrolysis of the "Posidonia oceanica" seagrass

Popis výsledku v původním jazyce

This research deals with the removal of Cr(VI), one of the most toxic heavy metal in biological systems, from wastewater by using activated carbon produced via pyrolysis and chemical activation of &quot;Posidonia oceanica&quot;. That is the most important and well-studied seagrass species of the Mediterranean Sea. The as produced activated carbon exhibited high specific surface area up to 1563 m(2)/g and a cumulative pore volume of 0.74 cm(3)/g, allocated to 74% micro-pores and 26% to meso-macro- pores. The adsorption capacity of Cr(VI) into Posidonia oceanica activated carbon was studied via batch experiments considering the contact time, the initial concentration and the pH parameters. The results were interpreted using four different adsorption kinetic models. The activated carbon material seems to exhibit excellent sorption properties with rapid removal capability for Cr(VI). The estimated maximum uptake capacity at equilibrium stage was similar to 120 mg/g. Also, the initial adsorption rate r(i) was dependent on the initial Cr(VI) concentration in aqueous solution and it was from 77 mg/(g*h) to 264 mg/ (g*h). The best fitted kinetic model seems to be the Diffusion-Chemisorption model with the rate constant K-DC of the Cr(VI) ions transfer from liquid to solid particles extend from 52 to 78 mg/(g*h(0.5)).

Název v anglickém jazyce

Advanced Cr(VI) sorption properties of activated carbon produced via pyrolysis of the "Posidonia oceanica" seagrass

Popis výsledku anglicky

This research deals with the removal of Cr(VI), one of the most toxic heavy metal in biological systems, from wastewater by using activated carbon produced via pyrolysis and chemical activation of &quot;Posidonia oceanica&quot;. That is the most important and well-studied seagrass species of the Mediterranean Sea. The as produced activated carbon exhibited high specific surface area up to 1563 m(2)/g and a cumulative pore volume of 0.74 cm(3)/g, allocated to 74% micro-pores and 26% to meso-macro- pores. The adsorption capacity of Cr(VI) into Posidonia oceanica activated carbon was studied via batch experiments considering the contact time, the initial concentration and the pH parameters. The results were interpreted using four different adsorption kinetic models. The activated carbon material seems to exhibit excellent sorption properties with rapid removal capability for Cr(VI). The estimated maximum uptake capacity at equilibrium stage was similar to 120 mg/g. Also, the initial adsorption rate r(i) was dependent on the initial Cr(VI) concentration in aqueous solution and it was from 77 mg/(g*h) to 264 mg/ (g*h). The best fitted kinetic model seems to be the Diffusion-Chemisorption model with the rate constant K-DC of the Cr(VI) ions transfer from liquid to solid particles extend from 52 to 78 mg/(g*h(0.5)).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20700 - Environmental engineering

Projekt

<a href="/cs/project/GX19-27454X" target="_blank" >GX19-27454X: Ovlivnění elektronických vlastností organometalických molekul pomocí jejich nekovalentních interakcí s rozpouštědly, ligandy a 2D nanosystémy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

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

—

Svazek periodika

405

Číslo periodika v rámci svazku

5. 3. 2021

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

000616145100006

EID výsledku v databázi Scopus

2-s2.0-85094810893