Bentonite and its modified derivates as adsorbents of lead

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F11%3A86078299" target="_blank" >RIV/61989100:27350/11:86078299 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/SGEM2011/S20.107" target="_blank" >http://dx.doi.org/10.5593/SGEM2011/S20.107</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/SGEM2011/S20.107" target="_blank" >10.5593/SGEM2011/S20.107</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bentonite and its modified derivates as adsorbents of lead

Popis výsledku v původním jazyce

The main objective was to study the removal of lead cations from aqueous solutions by sorption onto bentonite and its modifications. Modification included natrification by NaCl and intercalation by octadecylamine (ODA) in two different weight ratios. Thesorption isotherms were described using the Langmuir and Freundlich models. The adsorptive capacities of the original bentonite increased after the intercalation of ODA. Adsorption of Pb ions, calculated by the Langmuir model, yielded 97.15mg of Pb ionson 1g of bentonite (a sample intercalated by ODA in the weight ratio bentonite:ODA of 1:0.75). This sample was the most suitable for lead adsorption. The natrified sample also achieved better values of uptake capacity than the untreated bentonite, however, the contrast was not so obvious. The mechanisms of lead uptake are ion-exchange adsorption onto untreated bentonite and ion exchange plus Pb2+ octadecylamine complexation on the modified bentonite.

Název v anglickém jazyce

Bentonite and its modified derivates as adsorbents of lead

Popis výsledku anglicky

The main objective was to study the removal of lead cations from aqueous solutions by sorption onto bentonite and its modifications. Modification included natrification by NaCl and intercalation by octadecylamine (ODA) in two different weight ratios. Thesorption isotherms were described using the Langmuir and Freundlich models. The adsorptive capacities of the original bentonite increased after the intercalation of ODA. Adsorption of Pb ions, calculated by the Langmuir model, yielded 97.15mg of Pb ionson 1g of bentonite (a sample intercalated by ODA in the weight ratio bentonite:ODA of 1:0.75). This sample was the most suitable for lead adsorption. The natrified sample also achieved better values of uptake capacity than the untreated bentonite, however, the contrast was not so obvious. The mechanisms of lead uptake are ion-exchange adsorption onto untreated bentonite and ion exchange plus Pb2+ octadecylamine complexation on the modified bentonite.

Druh

D - Stať ve sborníku

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

—

Projekt

<a href="/cs/project/1M06007" target="_blank" >1M06007: Centrum výzkumu integrovaného systému využití vedlejších produktů z těžby, úpravy a zpracování energetických surovin</a><br>

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název statě ve sborníku

11th International Multidisciplinary Scientific GeoConference SGEM 2011 (1.-3. díl)

ISBN

—

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

199-206

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

20. 6. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000307366500028