Odstraňování kovových iontů z vodných roztoků sorpcí na neupraveném nízkokalorickém uhlí (oxyhumolitu)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F07%3A00003557" target="_blank" >RIV/44555601:13520/07:00003557 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Removal of metal ions from aqueous solutions by sorption onto untreated low-rank coal (oxihumolite)

Popis výsledku v původním jazyce

Naturally occurring kind of weathered and oxidised young brown coal called oxihumolite was used for an adsorptive removal of heavy metal cations (Cd2+, Cu2+, Co2+, Ni2+, Pb2+, Zn2+) from waters. A working range for the oxihumolite as a sorbent is in a slightly acidic medium (pH ca. 3.5 ? 4.5), where it exhibits a sufficient stability and sorption capability. Typical sorption capacities estimated from equilibrium measurements (sorption isotherms) ranged from ca. 0.1 to 0.4 mmol g-1. The kinetic dependencies for the metal sorption were measured in a batch arrangement and evaluated using both pseudo-first order and pseudo-second order kinetic models. The metal sorption was a quite rapid process that may be characterized by half-times ranging from ca. 10 to 80 min. The intraparticle diffusion was identified as the main mechanism controlling the rate of the sorption. Various extraction tests, namely the standardized leaching test with water and the three-step sequential BCR test, were used

Název v anglickém jazyce

Removal of metal ions from aqueous solutions by sorption onto untreated low-rank coal (oxihumolite)

Popis výsledku anglicky

Naturally occurring kind of weathered and oxidised young brown coal called oxihumolite was used for an adsorptive removal of heavy metal cations (Cd2+, Cu2+, Co2+, Ni2+, Pb2+, Zn2+) from waters. A working range for the oxihumolite as a sorbent is in a slightly acidic medium (pH ca. 3.5 ? 4.5), where it exhibits a sufficient stability and sorption capability. Typical sorption capacities estimated from equilibrium measurements (sorption isotherms) ranged from ca. 0.1 to 0.4 mmol g-1. The kinetic dependencies for the metal sorption were measured in a batch arrangement and evaluated using both pseudo-first order and pseudo-second order kinetic models. The metal sorption was a quite rapid process that may be characterized by half-times ranging from ca. 10 to 80 min. The intraparticle diffusion was identified as the main mechanism controlling the rate of the sorption. Various extraction tests, namely the standardized leaching test with water and the three-step sequential BCR test, were used

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/1M0554" target="_blank" >1M0554: Pokročilé sanační technologie a procesy</a><br>

Návaznosti

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

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

Separation and Purification Technology

ISSN

1383-5866

e-ISSN

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Svazek periodika

53

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

322-329

Kód UT WoS článku

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EID výsledku v databázi Scopus

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