Simultaneous adsorption of heavy metal ions and anions from aqueous solutions on chitosan Investigated by spectrophotometry and SEM-EDX analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F16%3A10336713" target="_blank" >RIV/00216208:11310/16:10336713 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.colsurfa.2016.08.033" target="_blank" >http://dx.doi.org/10.1016/j.colsurfa.2016.08.033</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.colsurfa.2016.08.033" target="_blank" >10.1016/j.colsurfa.2016.08.033</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Simultaneous adsorption of heavy metal ions and anions from aqueous solutions on chitosan Investigated by spectrophotometry and SEM-EDX analysis

Popis výsledku v původním jazyce

Chitosan (flakes with a degree of deacetylation of 90%) was used as adsorbent for heavy metal ions in solution (copper, iron, nickel). The adsorption capacities were determined in dependence on the adsorption time and the initial metal salt concentration. With increasing adsorption time as well as the initial metal salt concentration the adsorption capacities increased. Highest adsorption capacity was achieved for copper(II)ions with 110 mg/L. Iron(II)- and nickel(II)ions adsorbed with an adsorption capacity of 80 mg/L. The surface of chitosan flakes were investigated before and after the adsorption process by SEM and SEM-EDX, respectively. The formation of crystal-like structures was observed by SEM analysis for the investigation of copper(II)sulfate and iron(II)sulfate. It has been noticed that iron(II)ions oxidized before the adsorption on chitosan occurs. In comparison, the adsorption of nickel salt resulted in a smooth layer on the chitosan surface. SEM-EDX analysis revealed that sulfate adsorbs on the chitosan surface besides the metal cations used. (C) 2016 Published by Elsevier B.V.

Název v anglickém jazyce

Simultaneous adsorption of heavy metal ions and anions from aqueous solutions on chitosan Investigated by spectrophotometry and SEM-EDX analysis

Popis výsledku anglicky

Chitosan (flakes with a degree of deacetylation of 90%) was used as adsorbent for heavy metal ions in solution (copper, iron, nickel). The adsorption capacities were determined in dependence on the adsorption time and the initial metal salt concentration. With increasing adsorption time as well as the initial metal salt concentration the adsorption capacities increased. Highest adsorption capacity was achieved for copper(II)ions with 110 mg/L. Iron(II)- and nickel(II)ions adsorbed with an adsorption capacity of 80 mg/L. The surface of chitosan flakes were investigated before and after the adsorption process by SEM and SEM-EDX, respectively. The formation of crystal-like structures was observed by SEM analysis for the investigation of copper(II)sulfate and iron(II)sulfate. It has been noticed that iron(II)ions oxidized before the adsorption on chitosan occurs. In comparison, the adsorption of nickel salt resulted in a smooth layer on the chitosan surface. SEM-EDX analysis revealed that sulfate adsorbs on the chitosan surface besides the metal cations used. (C) 2016 Published by Elsevier B.V.

Druh

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

CEP obor

CC - Organická chemie

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Colloids and Surfaces A: Physicochemical and Engineering Aspects

ISSN

0927-7757

e-ISSN

—

Svazek periodika

510

Číslo periodika v rámci svazku

DEC 5 2016

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

275-282

Kód UT WoS článku

000386862300034

EID výsledku v databázi Scopus

2-s2.0-84992735559