Ultrasound-Alkali-Assisted Isolation of Cellulose from Coconut Shells
Document Type
Article
Publication Date
11-1-2024
Abstract
This research explored the isolation of cellulose from coconut shells using ultrasound. It involved two types of cellulose isolation: alkali and bleached cellulose (ABC) and ultrasound-alkali-assisted isolated cellulose (UAIC). The products were characterized using various techniques, including attenuated total reflection-Fourier transform infrared spectroscopy (ATRFTIR), X-ray diffraction analysis (XRD), thermogravimetric analysis (TGA), and field emission scanning electron microscopy (FESEM). The ATR-FTIR results confirmed the effective removal of lignin and hemicellulose in the ABC and UAIC samples. Field emission scanning electron microscopy analysis revealed the production of micro-sized cellulose. The TGA and XRD results showed improved thermal stability and crystallinity in ABC and UAIC, attributed to the elimination of non-cellulosic constituents. However, the thermal stability and crystallinity of UAIC were lower compared to ABC, likely due to the cavitation effect caused by sonication. The findings suggest that ultrasonication is an efficient and promising method for isolating cellulose.
Keywords
Cellulose, Ultrasound assisted isolation, Ultrasonication, Alkali treatment, Bleaching
Divisions
CHEMISTRY
Funders
Ministry of Higher Education for the Fundamental Research Grant Scheme (FRGS/1/2022/STG04/UM/02/7),Universiti Malaya under Bantuan Khas Penyelidikan/Special BKP (BKP002-2023-KP),RU Grant SATU (ST043-2021)
Publication Title
BioResources
Volume
19
Issue
4
Publisher
North Carolina State University
Publisher Location
CAMPUS BOX 8005, RALEIGH, NC 27695-8005 USA