Adsorption of peptides produced by cyanobacterium Microcystis aeruginosa onto granular activated carbon

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F14%3A00422047" target="_blank" >RIV/67985874:_____/14:00422047 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/14:10281132

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.carbon.2013.12.072" target="_blank" >http://dx.doi.org/10.1016/j.carbon.2013.12.072</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.carbon.2013.12.072" target="_blank" >10.1016/j.carbon.2013.12.072</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Adsorption of peptides produced by cyanobacterium Microcystis aeruginosa onto granular activated carbon

Popis výsledku v původním jazyce

The aim of this study was to investigate adsorption of peptides included in the cellular matter of cyanobacterium Microcystis aeruginosa, as they are difficult to remove during the coagulation/flocculation processes. In order to elucidate the effect of solution properties on peptide uptake, there were carried out equilibrium and kinetic experiments at different pH values and ionic strengths, using 2 types of activated carbon with different textural and charge characteristics – Picabiol 12·40 and Filtrasorb TL830. The results showed that the peptide adsorption on both carbons increases with decreasing pH value. The highest adsorption capacity was reached at pH 5 for Picabiol 12·40 due to a high portion of mesopores in its structure and the electrostatic attraction between functionalities of the carbon and the peptides. It was demonstrated that increasing ionic strength can enhance adsorption of the peptides by screening the repulsive forces, or by strengthening the attractive ones in the adsorption system, all of that depending on the type of carbon used and pH applied. Among peptides, those with low molecular weight of 1.0–4.5 kDa were adsorbed preferentially. Formation of H-bonds and electrostatic interactions were confirmed to play an essential role during the adsorption of peptides onto activated carbon.

Název v anglickém jazyce

Adsorption of peptides produced by cyanobacterium Microcystis aeruginosa onto granular activated carbon

Popis výsledku anglicky

The aim of this study was to investigate adsorption of peptides included in the cellular matter of cyanobacterium Microcystis aeruginosa, as they are difficult to remove during the coagulation/flocculation processes. In order to elucidate the effect of solution properties on peptide uptake, there were carried out equilibrium and kinetic experiments at different pH values and ionic strengths, using 2 types of activated carbon with different textural and charge characteristics – Picabiol 12·40 and Filtrasorb TL830. The results showed that the peptide adsorption on both carbons increases with decreasing pH value. The highest adsorption capacity was reached at pH 5 for Picabiol 12·40 due to a high portion of mesopores in its structure and the electrostatic attraction between functionalities of the carbon and the peptides. It was demonstrated that increasing ionic strength can enhance adsorption of the peptides by screening the repulsive forces, or by strengthening the attractive ones in the adsorption system, all of that depending on the type of carbon used and pH applied. Among peptides, those with low molecular weight of 1.0–4.5 kDa were adsorbed preferentially. Formation of H-bonds and electrostatic interactions were confirmed to play an essential role during the adsorption of peptides onto activated carbon.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/GAP105%2F11%2F0247" target="_blank" >GAP105/11/0247: Charakterizace organických látek produkovaných sinicemi a řasami a jejich vliv na koagulaci a flokulaci</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Carbon

ISSN

0008-6223

e-ISSN

—

Svazek periodika

69

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

595-608

Kód UT WoS článku

000331917900064

EID výsledku v databázi Scopus

2-s2.0-84892799666