Sorption of ionic dyes onto untreated low-rank coal - oxihumolite: a kinetic study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F07%3A00003519" target="_blank" >RIV/44555601:13520/07:00003519 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Sorption of ionic dyes onto untreated low-rank coal - oxihumolite: a kinetic study

Original language description

The kinetics of the sorption of basic dyes - Methylene Blue (C. I. Basic Blue 9), Malachite Green (C. I. Basic Green 4), Rhodamine B (C. I. Basic Violet 3), Crystal Violet (C. I. Basic Violet 10) - as well as acid dyes - Egacid Orange (C. I. Acid Orange7), Egacid Yellow (C. I. Acid Orange 11), Midlon Black (C. I. Acid Black 26) - onto a special kind of naturally weathered and oxidised young brown coal called oxihumolite was investigated in a batch arrangement. Both pseudo-first order and pseudo-secondorder kinetic models were applied successfully to evaluate the kinetic dependencies. The intraparticle diffusion model was used to examine diffusion processes taking place during the dye sorption. It was found that the diffusion rate parameters decreasedwith increasing dose of the sorbent and with increasing particle sizes of the sorbent, whereas an effect of an agitation mode and intensity was much less pronounced. The diffusion processes were identified as the main mechanisms controll

Czech name

Sorpce iontových barviv na neupravené nízkokalorické uhlí - oxyhumolit: kinetická studie

Czech description

Pro vybraná barviva (methylénovou modř, malachitovou zeleň, rhodamin B, krystalovou violeť, egacidovou oranž, egacidovou žluž a midlonovou čerň) byla studována kinetika sorpce na specifický typ mladého hnědého uhlí - oxyhumolit. Byly testovány různé modely popisující kinetiku sorpce - model pseudo-prvního řádu, model pseudo-druhého řádu a model vnitřní difuze. Difuzní procesy byly identifikovány jako rychlost určující procesy řídící sorpci iontových barviv z vodných roztoků.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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Project

<a href="/en/project/GA104%2F03%2F1248" target="_blank" >GA104/03/1248: Removing of selected organic pollutants from waters using solid sorbents</a><br>

Continuities

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

Publication year

2007

Confidentiality

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

Name of the periodical

Dyes and Pigments

ISSN

0143-7208

e-ISSN

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Volume of the periodical

74

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

363-370

UT code for WoS article

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EID of the result in the Scopus database

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