Fitri Khoerunnisa, Yustika Desti Yolanda, Mita Nurhayati, Firdha Zahra, Muhamad Nasir, Pakorn Opaprakasit, Min-Yee Choo, Eng-Poh Ng
A detailed study on the synthesis of chitosan nanoparticles under ultrasonication is reported in this paper. By using this simple technique, chitosan particles in nanometer range can be easily prepared without using any harmful and expensive chemicals. The results show that increasing the ultrasonic irradiation time and ultrasonic wave amplitude are the key factors for producing discrete chitosan nanoparticles with narrow particle size distribution. The resulting nanoparticles show superior turbidity removal efficiency (75.4%) and dealkalization (58.3%) in wastewater treatment than the bulk chitosan solid (35.4% and 11.1%, respectively), thus offering an eco-friendly and promising approach for treating wastewater via the coagulation/flocculation process. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Department of Chemistry, Indonesia University of Education, Setiabudi 229, Bandung, 40154, Indonesia; Research Unit for Clean Technology, Indonesian Institute of Sciences, Bandung, 40135, Indonesia; School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University, Khlong Luang, Pathum Thani, 12121, Thailand; School of Chemical Sciences, Universiti Sains Malaysia (USM), Penang, Minden, 11800, Malaysia
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