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Adsorption of direct green 6 dye onto modified power plant ASH

Show simple item record Harja, Maria Kotova, Olga Samuil, Costel Ciocinta, Ramona Ciobanu, Gabriela 2021-04-07T10:29:44Z 2021-04-07T10:29:44Z 2017
dc.identifier.citation Harja, Maria, Olga Kotova, Costel Samuil, Ramona Ciocinta, Gabriela Ciobanu. 2017. "Adsorption of direct green 6 dye onto modified power plant ASH". Lucrări Ştiinţifice USAMV - Iaşi Seria Agronomie 60(2): 15-20.
dc.description.abstract Power plant ash and modified ash were used as the adsorbent, in this study, for the removal of textiledye direct green 6 (DG6) from aqueous solutions. The adsorbent was prepared by the alkaline attack in aqueous medium and characterized by scanning electron microscopy (SEM-EDX), X-ray diffraction (XRD) and Brunauer- Emmett -Teller (BET) methods. The adsorbent in this study had a specific surface area of 7, for power plant ash and 40 m2g -1 for modified ash. Effects of various experimentalparameters, such as initialpH solution,adsorbent dosage, contact time and initial dye concentration are studied. The removal of DG6 effluent is a relatively rapid process. At pH 2 and ambient temperature, the adsorption equilibrium was reached after 4 hours and thekinetics follow a pseudo-second order model. The highest removal rate was obtained at pH 4, and was about 94% at ambient temperature. The adsorption isotherm is in goodagreement with the Langmuir model, the adsorption of dye on thesurface of new adsorbent materials was done in monolayer. The results obtained in this study confirm the potential of modified ash to be used as efficient adsorbent for the removal of direct green 6 dye from aqueous solution. en_US
dc.language.iso en en_US
dc.publisher “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi en_US
dc.subject adsorption en_US
dc.subject Direct green 6 dye en_US
dc.subject modified ash en_US
dc.subject factor influence en_US
dc.subject removal rate en_US
dc.title Adsorption of direct green 6 dye onto modified power plant ASH en_US
dc.type Article en_US Maria Harja, Gabriela Ciobanu, "Gheorghe Asachi” Technical University of Iaşi, Faculty of Chemical Engineering and Environmental Protection, Romania Olga Kotova, Laboratory of Mineral Raw Materials Technology, Institute of Geology, Komi Science Center, Ural Branch of RAS, Syktyvkar, Komi Republic, Russia Costel Samuil, Ramona Ciocinta, "Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine of Iasi, Faculty of Agriculture, Iasi
dc.publicationName Lucrări Ştiinţifice USAMV - Iaşi Seria Agronomie
dc.volume 60
dc.issue 2
dc.publicationDate 2017
dc.startingPage 15
dc.endingPage 20

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