Extraction of Silica from Different Sources of Agricultural Waste

Author:

Kouadri Imane1,Ben Seghir Bachir2,Hemmami Hadia3,Zeghoud Soumeia4,Allag Nassiba5,Rebiai Abdelkrim6,Ben Amor Ilham3,Chala Abdelouahad7,Belkhalfa Hakim8

Affiliation:

1. Process Engineering Department, Faculty of Science and Technology, University of Guelma, BP 401, Guelma 24000, Algeria.

2. Department of Process Engineering and Petrochemical, Faculty of Technology, University of El Oued, El Oued 39000, Algeria.

3. Laboratory of Industrial Analysis and Materials Engineering (LAGIM), University of Guelma, P.O. Box 401, Guelma 24000, Algeria.

4. Renewable Energy Development unit in Arid Zones (UDERZA), University of El Oued, El Oued 39000, Algeria.

5. Faculty of Technology, University of El Oued, El Oued 39000, Algeria.

6. Chemistry Department, Faculty of Exact Sciences, University of El Oued, P.O. Box 789, El Oued 39000, Algeria.

7. Material Sciences Department, Faculty of Science, University of Biskra, 07000, Algeria.

8. Scientific and Technical Research Center in Physicochemical Analysis, Tipaza 42000, Algeria.

Abstract

Disposal and burning of biomass-derived from relevant agricultural waste indiscriminately pollutes the environment and increases greenhouse gas emissions. Researchers have been exploring the “waste to wealth creation” policy due to the renewable nature and availability of agricultural wastes. In this study, agricultural wastes (groundnut shell (K), walnut shell (G), and wood carpentry waste (N)) were investigated for potential use in silica production. Initially, to obtain the ash, the samples were burned. The chemical method was then used to extract fine powder silica in the nanoscopic range using a simple bottom-up approach. To confirm the results, the samples were examined by XRD, SEM with EDX, and FT-IR, which were used to analyze the extracted silica nanoparticles. The isolated silica nanoparticles have a unit size of 9 – 30 nm, according to microstructural examination. EDX verified the presence of SiO2 in the sample. FT-IR analysis also reveals the presence of siloxane group.

Publisher

A and V Publications

Subject

General Medicine

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