Removal of metal ions from aqueous solutions by sorption onto untreated low-rank coal (oxihumolite)
The result's identifiers
Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Removal of metal ions from aqueous solutions by sorption onto untreated low-rank coal (oxihumolite)
Original language description
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
Czech name
Odstraňování kovových iontů z vodných roztoků sorpcí na neupraveném nízkokalorickém uhlí (oxyhumolitu)
Czech description
Oxidované hnědé uhlí zvané oxyhumolit bylo použito pro adsorpční odstraňování kationtů těžkých kovů (Cd2+, Cu2+, Co2+, Ni2+, Pb2+, Zn2+) z odpadních vod. Byl určen pracovní rozsah sorbentu. Typické sorpční kapacity se pohybovaly v rozmezí 0,1 - 0,4 mmolg-1. Byly měřeny kinetické závislosti sorpce a testovány různé kinetické modely. Použité sorbenty byly analyzovány pomocí různých vyluhovycích testů a byla hodnocena potenciální rizika uvolňování těžkých kovů do životního prostředí.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/1M0554" target="_blank" >1M0554: Advanced Remedial Technologies and Processes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Separation and Purification Technology
ISSN
1383-5866
e-ISSN
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Volume of the periodical
53
Issue of the periodical within the volume
1
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
322-329
UT code for WoS article
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EID of the result in the Scopus database
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