Application of eco-friendly cationic celluloses for effective sludge dewatering

TitleApplication of eco-friendly cationic celluloses for effective sludge dewatering
Publication TypeJournal Article
Year of Publication2024
AuthorsMenon, S, Suresha, PR, Khairnar, A, Kalyanraman, V
JournalWater Air and Soil Pollution
Volume235
Issue6
Pagination388
Date PublishedJUN
Type of ArticleArticle
ISSN0049-6979
Keywordsbiodegradable, Cationic cellulose, coagulation, Sludge dewatering, Wastewater treatment
Abstract

The study presents the application of cationic celluloses in sludge dewatering. The source of cellulose used in this study were microcrystalline cellulose and alkaline-treated rice straw. The cationic celluloses were synthesized in a two-step reaction involving oxidation of cellulose with sodium periodate and followed by Schiff base reaction with Girard reagent T to introduce quaternary ammonium cations. The functional groups and chemical structure were confirmed by FTIR and NMR spectroscopy. The molecular weight and cationicity index of cationic cellulose were determined. Owing to their low molecular weight, the cationic celluloses functioned as coagulants and brought about charge neutralization through electric patches. The cationic celluloses were effective in promoting rapid sludge settling and improving the sludge filterability. The cationic celluloses are eco-friendly and non-toxic alternatives to acrylamide-based flocculants.

DOI10.1007/s11270-024-07203-4
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

3.6

Divison category: 
Polymer Science & Engineering
Database: 
Web of Science (WoS)

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