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Title: Using Different Co-Adjuvant Activating Agents to Improve Activated Carbon Adsorption Capacities
Authors: Cansado, I.P.P
Mourão, P.A.M.
Ribeiro Carrott, M.M.L.
Carrott, P.J.M.
Keywords: Activated carbon
Chemical activation
Issue Date: 3-Sep-2016
Publisher: Ribeiro Carrott, Manuela and Carrott Peter - Universidade de Évora
Citation: Isabel Cansado, Paulo Mourão, Manuela Carrott, Peter Carrott, Using Different Co-Adjuvant Activating Agents to Improve Activated Carbon Adsorption Capacities, Livro de resumos da 40ª Reunião Ibérica de Adsorção (ISBN 978-989-8550-34-7) Universidade de Évora (2016)
Abstract: Activated carbon (AC) has proved to be an effective adsorbent for the removal of an assortment of organic and inorganic pollutants from aqueous or gaseous media. However, the pursuit for more effective and cheaper AC is still very active and a diversity of textural and chemical treatments are described as a way to expand their applications. It is well known that the surface area and surface chemistry of AC strongly affect their adsorption capacity [1-3]. In particular, an increase in the nitrogen content has been related to an increase of the basic character and also to the development of the porous structure. In most published work this was achieved through an AC post treatment, including either a reaction with nitrogen containing reagents, such as ammonia, nitric acid, or a diversity of amines. However, the AC prepared directly from a nitrogen rich precursor through a physical or chemical activation is referred to as presenting the best characteristics, namely high nitrogen content, high basic character, low nitrogen leaching and also a good thermal stability [4]. To improve the AC adsorption capacities for acidic pesticide removal from the aqueous phase, we intend to improve the porous structure and introduce nitrogenated groups directly into the AC matrix, using different co-adjuvant activating agents as a nitrogen source, by chemical activation, with potassium hydroxide, of cork or poly(ethyleneterephthalate) (PET) precursors.
Type: lecture
Appears in Collections:CQE - Comunicações - Em Congressos Científicos Internacionais

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