Saw-sedge Cladium mariscus as a functional low-cost adsorbent for effective removal of 2,4-dichlorophenoxyacetic acid from aqueous systems

Przemysław Bartczak; Sonia Żółtowska; Małgorzata Norman; Łukasz Klapiszewski; Jakub Zdarta; Andrzej Komosa; Ignacy Kitowski; Filip Ciesielczyk; Teofil Jesionowski

doi:10.1007/s10450-015-9708-2

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Title

Saw-sedge Cladium mariscus as a functional low-cost adsorbent for effective removal of 2,4-dichlorophenoxyacetic acid from aqueous systems

Authors

Przemysław Bartczak (WTCH) ^{[ 1 ][ D ]}
Sonia Żółtowska (WTCH) ^{[ 1 ]}
Małgorzata Norman (WTCH) ^{[ 1 ][ D ]}
Łukasz Klapiszewski (WTCH) ^{[ 2 ][ P ]}
Jakub Zdarta (WTCH) ^{[ 1 ][ D ]}
Andrzej Komosa
Ignacy Kitowski
Filip Ciesielczyk (WTCH) ^{[ 2 ][ P ]}
Teofil Jesionowski (WTCH) ^{[ 2 ][ P ]}

^{[ 1 ]} Wydział Technologii Chemicznej, Politechnika Poznańska | ^{[ 2 ]} Instytut Technologii i Inżynierii Chemicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | ^{[ D ]} phd student | ^{[ P ]} employee

Year of publication

2016

Published in

Adsorption

Journal year: 2016 | Journal volume: vol. 22 | Journal number: iss. 4-6

Article type

scientific article / paper

Publication language

english

Keywords

EN

Abstract

EN For the first time in the published literature, a study is described concerning the use of the saw-sedge Cladium mariscus (C. mariscus) for adsorption of 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous systems. Among the experiments carried out, the elemental composition of C. mariscus was determined (C = 48.0 %, H = 7.1 %, N = 0.95 %, S = 0.4 %), FTIR spectroscopic analysis was performed to confirm the chemical structure of the adsorbent, and porous structure parameters were measured: BET surface area (A BET = 0.6 m2/g), total pore volume (V p = 0.001 cm3/g) and average pore size (S p = 6.6 nm). It was shown that the effectiveness of removal of 2,4-D from aqueous systems using C. mariscus depends on parameters of the process: contact time, system pH, mass of sorbent, and temperature. Maximum adsorption was attained for a solution at pH = 3. Further increase in the alkalinity of the tested systems led to a reduction in the effectiveness of the process. The kinetic of adsorption of 2,4-D by C. mariscus was also determined, and thermodynamic aspects were investigated. The experimental data obtained correspond to a pseudo-second-order kinetic model of type 1. Additionally the negative values obtained for ΔHº indicate that the process is exothermic, and the negative values of ΔGº show it to be spontaneous. As the temperature of the system increases the spontaneity of adsorption is reduced, in accordance with the exothermic nature of the process.

Pages (from - to)

517 - 529

DOI

10.1007/s10450-015-9708-2

URL

https://link.springer.com/article/10.1007/s10450-015-9708-2

Presented on

9th International Symposium on Surface Heterogeneity Effects in Adsorption and Catalysis on Solids, ISSHAC-9, 17-23.07.2015, Wrocław, Poland

Open Access Mode

czasopismo hybrydowe

Open Access Text Version

final published version