Design of experiments for the methylene blue adsorption study onto biocomposite material based on Algerian earth chestnut and cellulose derivatives
Author:
Boubekri Fatima Zohra1, Benkhaled Amal2, Elbahri Zineb1ORCID
Affiliation:
1. Laboratoire de Matériaux & Catalyse, Faculté des Sciences Exactes , Université Djillali Liabès de Sidi Bel Abbes, Djillali Liabes University of Sidi Bel Abbes , Sidi Bel Abbes 22000 , Algeria 2. Laboratoire Toxicomed , Université Abou bekr Belkaid , Tlemcen 13000 , Abou bekr Belkaid University of Tlemcen, Algeria
Abstract
Abstract
Novel bio-composite films based on Algerian earth chestnut i.e. Bunium incrassatum roots (Talghouda, TG) and cellulose derivatives (ethylcellulose; EC and cellulose acetate; AC) are prepared and tested for methylene blue (MB) adsorption from aqueous solutions. The biomaterial films are elaborated by dissolution solvent evaporation technique and are characterized by infrared spectroscopy, X-ray diffraction, SEM and optical microscopy. The pHpzc is also determined. For the adsorption tests, design of experiments based on 23 factorial design is built and followed. So, the effects of TG:EC:AC ratio, pH and MB initial concentration are discussed on the basis of mathematical modelling using Minitab software. Mathematical relations between equilibrium adsorption percentages and capacities versus selected variables were obtained and illustrated by surface plots. The interactive effects between variables have been also identified. The results showed that the MB adsorption percentage exceeded 83% and is mostly affected by pH value. Nevertheless the adsorption capacity is affected by MB initial concentration.
Funder
Ministère de l’Enseignement Supérieur et de la Recherche Scientifique de l’Algérie Direction Générale de la Recherche Scientifique et du Développement Technologique
Publisher
Walter de Gruyter GmbH
Subject
Materials Chemistry,Polymers and Plastics,General Chemical Engineering
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