Bio-polishing sludge adsorbents for dye removal

• Autorzy: Zaini M. A. A. , Norulaina A. , Mohd Azizi C. Y.

Identyfikatory

DOI

10.1515/pjct-2016-0065

• Języki publikacji: EN

Abstrakty

EN

The objective of this work is to evaluate the removal of methylene blue dye by bio-polishing sludge-based adsorbents. The adsorbents were characterized according to the specific surface area, pH upon the treatment and surface functional groups. The adsorption of dye was carried out at room temperature, and the adsorption data were analyzed using the isotherm and kinetics models. The bio-polishing sludge is rich in ash content, and the presence of surface functional groups varied with the treatment strategies. The specific surface area of adsorbents is between 7.25 and 20.8 m² /g. Results show that the maximum removal of methylene blue by sludge adsorbents was observed to have the following order: untreated sludge (SR) > zinc chloride-treated (SZ) > microwave-dried (SW) = potassium carbonate-treated (SK) > acid-washed (SH). The maximum adsorption capacities for SR and SZ as predicted by the Langmuir model are 170 and 135 mg/g, respectively. Although SR demonstrates a higher maximum removal than SZ, the latter exhibits greater removal intensity and rate constant even at high dye concentration. The bio-polishing sludge is a promising adsorbent for dye wastewater treatment.

Słowa kluczowe

EN

adsorption; adsorbent; bio-polishing sludge; methylene blue; chemical treatment

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2016
• Tom: Vol. 18, nr 4
• Strony: 15--21
• Opis fizyczny: Bibliogr. 33 poz., rys., tab.

Twórcy

autor

Zaini M. A. A.

• Universiti Teknologi Malaysia, Centre of Lipids Engineering and Applied Research (CLEAR), Ibnu-Sina Institute for Scientific and Industrial Research (ISI-SIR), 81310 UTM Johor Bahru, Malaysia

autor

Norulaina A.

• Universiti Teknologi Malaysia, Centre of Lipids Engineering and Applied Research (CLEAR), Ibnu-Sina Institute for Scientific and Industrial Research (ISI-SIR), 81310 UTM Johor Bahru, Malaysia

autor

Mohd Azizi C. Y.

• Universiti Teknologi Malaysia, Centre of Lipids Engineering and Applied Research (CLEAR), Ibnu-Sina Institute for Scientific and Industrial Research (ISI-SIR), 81310 UTM Johor Bahru, Malaysia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).