Preparation and characterization of novel microstructure cellulosic sawdust material: application as potential adsorbent
- PDF / 1,329,865 Bytes
- 12 Pages / 547.087 x 737.008 pts Page_size
- 104 Downloads / 223 Views
(0123456789().,-volV) ( 01234567 89().,-volV)
ORIGINAL RESEARCH
Preparation and characterization of novel microstructure cellulosic sawdust material: application as potential adsorbent for wastewater treatment Salah Benyoucef . Djamila Harrache . Samira Djaroud . Karima Sail . Daniel Gallart-Mateu . Miguel de la Guardia
Received: 9 January 2020 / Accepted: 11 July 2020 Ó Springer Nature B.V. 2020
Abstract The present work investigated the feasibility to develop of a new microstructure of a material from date palm sawdust in order to improve its adsorption properties. The preparation of the material consists of mechanical grinding of fibers, sieving of sawdust, extractibles extraction and then pretreatment with activating agent sulfuric acid at 1% and 40%. It was then followed by chemical treatment using urea by grafting reaction. The phases change due to chemical modification on sawdust particles was examined using Fourier Transform Infrared (FTIR), spectroscopy Scanning Electron Microscopy (SEM), X-ray diffraction analysis (XRD) and BET method. The hydrolysis at 40% has an effect on the increase of the material crystallinity, higher than the hydrolysis at 1%. An increase in the size of crystallites was also observed by XRD measurements. These results were related to the reduction of the amorphous fractions of S. Benyoucef D. Harrache (&) S. Djaroud Physical Chemistry Laboratory for Advanced Materials, University Djillali Liabes, Sidi Bel Abbes, Algeria e-mail: [email protected] K. Sail Laboratory of Microscopy and Microanalysis of the Matter and the Molecular Spectroscopy, Department of Physics, Faculty of Exact Sciences, University Djillali Liabes, Sidi Bel Abbes, Algeria D. Gallart-Mateu M. de la Guardia Department of Analytical Chemistry, University of Valencia, Valencia, Spain
wood, and, consequently, to the enrichment of the relative crystalline content. Indeed, the degradation of hemicellulose was observed, by FT-IR analysis, for treated samples. The treated sawdust at 40% acid has the better adsorption characters due to high surface area of 135 m2/g as compared to 44.4 m2/g for treated sawdut (1% acid), this is well supported by SEM micrographs wich also suggest has greater number of pores. Based on preliminary satisfactory results, the sawdust date palm provides a valuable addition to the existing conventional processes to better optimize the adsorption capacity along with low-cost potential application in wastewater treatment. Keywords Cellulose wastes Date palm Microstructure Valorization Chemical modification Adsorption capacity
Introduction The use of natural materials, as adsorbents, provides a promising alternative to the process of wastewaters purification and could enable to manage both, solid residues and the wastewater, by decreasing the environmental impacts. Among natural materials, the date palm fibers Phoenix dactylifera L., whose properties as composite materials have been subject to previous studies (AbuSharkh and Hamid 2004; Al-Kaabi et al. 2005;
123
Cellulose
K
Data Loading...
