@article {49654,
	title = {Application of eco-friendly cationic celluloses for effective sludge dewatering},
	journal = {Water Air and Soil Pollution},
	volume = {235},
	year = {2024},
	month = {JUN},
	pages = {388},
	type = {Article},
	abstract = {<p>
	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.</p>
},
	keywords = {biodegradable, Cationic cellulose, coagulation, Sludge dewatering, Wastewater treatment},
	issn = {0049-6979},
	doi = {10.1007/s11270-024-07203-4},
	author = {Menon, Snehal and Suresha, P. R. and Khairnar, Ajay and Kalyanraman, V.}
}
@article {49864,
	title = {Insight Into the Influence of Salinity on Flow and Flocculation Behavior of Acrylamide-Based Cationic Polyelectrolyte},
	journal = {Journal of Applied Polymer Science},
	volume = {143},
	year = {2026},
	month = {MAR},
	type = {Article},
	abstract = {<p>
	The viscometric behavior of aqueous solutions of acrylamide and acrylamidopropyl trimethylammonium chloride copolymers (AM-co-APTMAC) with varying cationic content under different salinity conditions was studied. Viscometric measurements were employed to determine intrinsic viscosity and quantify the influence of electrostatic interactions on chain conformation. Rheology experiments were performed to probe dynamic flow behavior under shear to obtain insights into polyelectrolyte viscoelastic properties under conditions mimicking industrial processes. Viscometric and rheology data analysis is augmented with insights from NMR relaxation and pulsed field gradient NMR diffusion experiments. Further, flocculation of kaolin suspensions was studied using aqueous solutions of AM-co-APTMAC copolymers with different charge fractions in the presence and absence of salt. The physicochemical insights on the behavior of AM-co-APTMAC polyelectrolytes in solution from this study could be relevant in practical applications, such as plants that use seawater or in cases where the ionic strength of suspensions is high due to salinity in the medium.</p>
},
	keywords = {copolymers, polyelectrolytes, structure property relationships, theory and modeling},
	issn = {0021-8995},
	doi = {10.1002/app.70219},
	author = {Ranganath, Suresha P. and Kurian, Rachna and Torris, Arun and Khairnar, Ajay and Ravindranathan, Sapna and Rajamohanan, P. R. and Badiger, Manohar V. and Wolf, Bernhard A.}
}
