Journal
BIORESOURCE TECHNOLOGY
Volume 216, Issue -, Pages 1066-1076Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.05.106
Keywords
Activated carbon; Adsorbent; Adsorption; Cellulose; Lignocellulosic
Funding
- DST (Department of Science and Technology), New Delhi, India [DST/INSPIRE Fellowship/2012/346]
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Cellulose is a biodegradable, renewable, non-meltable polymer which is insoluble in most solvents due to hydrogen bonding and crystallinity. Natural cellulose shows lower adsorption capacity as compared to modified cellulose and its capacity can be enhanced by modification usually by chemicals. This review focuses on the utilization of cellulose as an adsorbent in natural/modified form or as a precursor for activated carbon (AC) for adsorbing substances from water. The literature revealed that cellulose can be a promising precursor for production of activated carbon with appreciable surface area (similar to 1300 m(2) g(-1)) and total pore volume (similar to 0.6 cm(3) g(-1)) and the surface area and pore volume varies with the cellulose content. Finally, the purpose of review is to report a few controversies and unresolved questions concerning the preparation/properties of ACs from cellulose and to make aware to readers that there is still considerable scope for future development, characterization and utilization of ACs from cellulose. (C) 2016 Elsevier Ltd. All rights reserved.
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