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Vol. 37 No. 10 (2025): Vol 37 Issue 10, 2025

Copyright (c) 2025 Dr. Monika Agarwal, Rajeev Kumar, Lokesh Kumar Saxena, Dr. Rohit Singh, Ankita Tripathi

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Comparative Analysis of the Treatment Potential of Cationic Starch and its Polyacrylamide Blend on Tannery and Sewage Effluents

https://doi.org/10.14233/ajchem.2025.34437
Monika Agarwal
Department of Chemistry, Dayanand Anglo-Vedic (P.G.) College (Affiliated to Chhatrapati Shahu Ji Maharaj University, Kanpur), Kanpur-208001, India
https://orcid.org/0000-0003-1893-5704
Rajeev Kumar
Department of Chemistry, Dayanand Anglo-Vedic (P.G.) College (Affiliated to Chhatrapati Shahu Ji Maharaj University, Kanpur), Kanpur-208001, India
https://orcid.org/0009-0006-9220-2508
Lokesh Kumar Saxena
Department of Chemistry, Dayanand Anglo-Vedic (P.G.) College (Affiliated to Chhatrapati Shahu Ji Maharaj University, Kanpur), Kanpur-208001, India
https://orcid.org/0009-0004-5999-2494
Ankita Tripathi
Department of Chemistry, Dayanand Anglo-Vedic (P.G.) College (Affiliated to Chhatrapati Shahu Ji Maharaj University, Kanpur), Kanpur-208001, India
https://orcid.org/0009-0006-7711-3013
Rohit Singh
Department of Chemistry, Dayanand Anglo-Vedic (P.G.) College (Affiliated to Chhatrapati Shahu Ji Maharaj University, Kanpur), Kanpur-208001, India
https://orcid.org/0000-0002-1429-9977

Corresponding Author(s) : Monika Agarwal

monikaagarwal_kn03@csjmu.ac.in

Asian Journal of Chemistry, Vol. 37 No. 10 (2025): Vol 37 Issue 10, 2025

Abstract

The discharge of tannery and sewage wastewater is loaded with many toxic wastes, especially elevated levels of total dissolved solids (TDS) and suspended solids (SS) poses a significant environmental concern. This study reports the flocculation efficacy of cationic starch (CS) and its polymeric blend with polyacrylamide (CS-PAM) through the standard Jar Test method. Key operational parameters including polymer dosage, contact time and pH were optimized. Maximum solid removal efficiencies of 94% for tannery and 96% for sewage effluents were achieved at optimal dosages of 3.2 × 10–4 g/L and 1.6 × 10–4 g/L, respectively, under acidic (pH 4.0) and neutral (pH 7.0) conditions. X-ray diffraction analysis confirmed the interaction of flocs with the modified polymers. The results indicate that while cationic starch shows the substantial flocculation due to its inherent cationic nature, the CS-PAM copolymer exhibits enhanced performance. These findings highlight the potential of CS-based flocculants as sustainable, biodegradable and cost-effective alternatives to conventional synthetic flocculants for industrial and municipal wastewater treatment.

Keywords

Polyacrylamide Flocculation Tannery effluent Wastewater treatment Total dissolved solids Suspended solids
(1)
Agarwal, M.; Kumar, R.; Saxena, L. K.; Tripathi, A.; Singh, R. Comparative Analysis of the Treatment Potential of Cationic Starch and Its Polyacrylamide Blend on Tannery and Sewage Effluents. ajc 2025, 37, 2532-2544.
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