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Removal of Methylene Blue from Aqueous Solutions Using Fly Ash Modified with Sodium Hydroxide

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1TitleTitle of DocumentRemoval of Methylene Blue from Aqueous Solutions Using Fly Ash Modified with Sodium Hydroxide
2CreatorAuthor's name, affiliation, country EBELEGI NEWTON AUGUSTUS, AYAWEI NIMIBOFA* and WANKASI DONBEBE
Department of Chemical Sciences, Niger Delta University, Wilberforce Island, Bayelsa State, Nigeria
3SubjectDicipline(s) Chemical Science
3SubjectKeywords Adsorption, Methylene Blue, Freundlich Isotherm, Fly ash
4DescriptionAbstract Fly ash was modified by chemical treatment with NaOH solutions of varying concentrations (4, 3, 2 and 1 M) and labeled SHFA-4, SHFA-3, SHFA-2, SHFA-1 respectively. All four forms of fly ash were tested as adsorbents for the removal of methylene Blue dye from aqueous solutions. The effect of contact time and concentration were investigated using a batch adsorption technique. The experimental data could best be described by the Freundlich isotherm and the dynamic data fit well with the pseudo-second-order kinetic model, which suggests that the adsorptions appeared to be multilayer adsorption processes. Fly ash modified with 4 M NaOH (SHFA-4) demonstrated the highest adsorption capacity (KF=77.04 mg/L). The kinetic data confirms the applicability of the pseudo-second-order kinetic model which indicates multilayer adsorption processes. These results suggests that fly modified with NaOH could be employed as a low cost adsorbent for the removal of methylene blue form wastewater streams from textile, tanning and printing industries
5PublishersOrganizing agency, location WWW Publications, India
6Contributor Sponsor(s) -
7DateDate (YYYY-MM-DD) -
8TypeStatus & genre Peer-reviewed Article
8TypeType
9FormateFile Formate PDF
10IdentifierUniform Resource Identifier Click Here
10IdentifierDigital Object Identifier DOI:10.7598/cst2017.1230
11SourceJournal/conference title; vol., no. (Year)Chemical Science Transactions, Volume  6 , Number  (4), (2017)
12LanuguageEnglish=en en
13RelationSupp.files
14Coverage -
15CopyrightCopyright and permissions
Chemical Science Transactions | Chem Sci Trans | CST | Online Chemistry Journal | Open Access
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