Bacterial Cellulose-Based Material from Coconut Water as Efficient Green Adsorbent for Heavy Metal Cations
Journal article, 2023
Nata de coco produced via coconut water fermentation using Acetobacter xylinum was directly applied to remove metal cations in aqueous solutions without any further chemical modification. Bacterial cellulose, contributing just 0.8 wt % to nata de coco, were randomly distributed and interconnected, yielding a three-dimensional framework with high crystallinity and porosity. Due to these characteristics and the abundant presence of electron-rich hydroxyl groups, unmodified bacterial cellulose in nata de coco exhibited a strong affinity to metal cations in water. The adsorption efficiency of nata de coco can be significantly improved to & SIM;30 and & SIM;45 mg g(-1) for Pb2+ and Fe3+, respectively, by decreasing its size by grinding to decrease its size. Notably, nata de coco can adsorb multiple cations and the uptakes were almost similar for a 100-fold scaled-up adsorption volume.
Coconut water
Adsorption
Metal cations
Fermentation
Unmodified bacterial cellulose
Author
Hanh N. H. Nguyen
Vietnam National University
Ho Chi Minh City University of Technology (HCMUT)
Khoa D. D. Nguyen
Ho Chi Minh City University of Technology (HCMUT)
Vietnam National University
Nhan T. H. Le
Vietnam National University
Ho Chi Minh City University of Technology (HCMUT)
Hoang Phuoc Ho
Chalmers, Chemistry and Chemical Engineering, Chemical Technology
Ha V. V. Le
Vietnam National University
Ho Chi Minh City University of Technology (HCMUT)
Chemical Engineering and Technology
0930-7516 (ISSN) 1521-4125 (eISSN)
Vol. 46 12 2547-2559Subject Categories
Materials Chemistry
DOI
10.1002/ceat.202300033