Treatment of wastewaters containing acid, reactive and direct dyes using aminosilane functionalized silica

• Autorzy: Monika Wawrzkiewicz , Zbigniew Hubicki , Magdalena Nowacka , Łukasz Klapiszewski
• Języki publikacji: EN

Abstrakty

EN

Aminosilane modified silica was prepared and investigated for the adsorption of textile dyes such as C.I. Acid Orange 7 (AO7), C.I. Reactive Black 5 (RB5) and C.I. Direct Blue 71 (DB71) from aqueous media and wastewaters. The values of the sorption capacities obtained from the Langmuir isotherm model were: 5.3 mg g-1, 58.7 mg g-1 and 72.2 mg g-1 for AO7, DB71 and RB5, respectively. The affinity series of the dyes for the modified silica can be presented as follows: C.I. Reactive Black 5 > C.I. Direct Blue 71> C.I. Acid Orange 7. The influence of anionic surfactant (SDS) and sodium chloride on dye sorption was investigated in a system containing 100 mg L-1 dye and 0.1-1 g L-1 SDS or 1-25 g L-1 NaCl. The sorption capacities decrease with increasing concentration of SDS in the solution. Retention of AO7 and RB5 was reduced in the presence of NaCl. A satisfactory agreement of the experimental data with the pseudo second-order kinetic model was found. Effectiveness of the aminosilane modified silica in raw textile wastewater purification was confirmed.

EN

Słowa kluczowe

EN

dye sorption; modified silica; wastewater purification; kinetic studies; dyes removal

• Czasopismo: Open Chemistry
• Rocznik: 2015
• Tom: 13
• Numer: 1

Daty

wydano

2015-01-01

otrzymano

2013-11-06

zaakceptowano

2014-03-19

online

2014-10-09

Twórcy

autor

Monika Wawrzkiewicz

• Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie – Sklodowska University, 20-031 Lublin, Poland,

autor

Zbigniew Hubicki

• Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie – Sklodowska University, 20-031 Lublin, Poland

autor

Magdalena Nowacka

• Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, 60-965 Poznan, Poland

autor

Łukasz Klapiszewski

• Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, 60-965 Poznan, Poland

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Identyfikatory

DOI

10.1515/chem-2015-0013