Enhancement of the adsorption capacity of Fe-clay by bioleaching and activation of Fe sites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916894" target="_blank" >RIV/60461373:22310/18:43916894 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.clay.2018.06.031" target="_blank" >http://dx.doi.org/10.1016/j.clay.2018.06.031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.clay.2018.06.031" target="_blank" >10.1016/j.clay.2018.06.031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhancement of the adsorption capacity of Fe-clay by bioleaching and activation of Fe sites

Popis výsledku v původním jazyce

This study presents how the bioaccessibility and biotransformation of Fe- oxides present in two different Fe rich clay samples influenced their sorption properties. The bentonite and kaolin were bioleached by heterotrophic indigenous bacteria for 15 and 30 days and following treated by 1 M and 6 M hydrochloric acid. By bioleaching, only slight content of Fe was removed from the natural samples, but content of hardly soluble Fe oxides decreased and amorphous oxide- hydroxide increased. This transformation related with decrease in value of specific surface area and total pore volume, as well as with morphological and pore changes of studied clays. After 30 days of bioleaching process, bioleached samples proved better adsorption parameters for the AsV and SbV adsorption in comparison to natural samples. The sorption efficiency of AsV/SbV adsorption on bioleached materials reached up to 95–99%, at which the bentonite was more sensitive to bioleaching. © 2018 Elsevier B.V.

Název v anglickém jazyce

Enhancement of the adsorption capacity of Fe-clay by bioleaching and activation of Fe sites

Popis výsledku anglicky

This study presents how the bioaccessibility and biotransformation of Fe- oxides present in two different Fe rich clay samples influenced their sorption properties. The bentonite and kaolin were bioleached by heterotrophic indigenous bacteria for 15 and 30 days and following treated by 1 M and 6 M hydrochloric acid. By bioleaching, only slight content of Fe was removed from the natural samples, but content of hardly soluble Fe oxides decreased and amorphous oxide- hydroxide increased. This transformation related with decrease in value of specific surface area and total pore volume, as well as with morphological and pore changes of studied clays. After 30 days of bioleaching process, bioleached samples proved better adsorption parameters for the AsV and SbV adsorption in comparison to natural samples. The sorption efficiency of AsV/SbV adsorption on bioleached materials reached up to 95–99%, at which the bentonite was more sensitive to bioleaching. © 2018 Elsevier B.V.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20801 - Environmental biotechnology

Projekt

<a href="/cs/project/GA16-13778S" target="_blank" >GA16-13778S: Selektivní sorbenty toxických iontů připravené z odpadní keramiky: charakterizace, metody a aplikace</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Applied Clay Science

ISSN

0169-1317

e-ISSN

—

Svazek periodika

162

Číslo periodika v rámci svazku

June 2018

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

317-325

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85049107455