Rapid Adsorption of Methylene Blue from Aqueous Solutions by Goethite Nanoadsorbents

Autor:	Nashaat N. Nassar, Anna Ringsred
Rok vydání:	2012
Předmět:	Aqueous solution Goethite Chemistry Inorganic chemistry Iron oxide Pollution Decomposition chemistry.chemical_compound Adsorption Wastewater visual_art Mass transfer visual_art.visual_art_medium Environmental Chemistry Waste Management and Disposal Methylene blue
Zdroj:	Environmental Engineering Science. 29:790-797
ISSN:	1557-9018 1092-8758
Popis:	Iron-oxide nanoadsorbents are attractive for wastewater treatment for two important reasons. First, nanoadsorbents can remove contaminants from wastewater rapidly. Second, iron oxide nanoadsorbents can be employed as catalysts for the decomposition of contaminants and thus eliminate sludge formation. This article investigates the use of iron-oxide nanoadsorbents to remove contaminants from wastewater. A later paper considers their use as catalysts for decomposition. In this study, goethite (a type of iron oxide) nanoparticles was employed for the removal of methylene blue from an aqueous solution, using a batch-adsorption technique. Effects of contact time, initial concentration of methylene blue, temperature, and solution pH on the adsorbed amount of methylene blue were investigated. Adsorption was rapid, as equilibrium was achieved within 20 minutes. An external mass transfer model fit adsorption kinetic results well and provided reasonable overall volumetric mass transfer coefficients. Increas...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4d70838afd167ec35c31d2d31f387ebf https://doi.org/10.1089/ees.2011.0263 Zobrazit plný text záznamu