Amylopectin grafted with poly (acrylic acid): Development and application of a high performance flocculant

Amit Kumar Sarkar, N. R. Mandre, A. B. Panda, Sagar Pal*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In recent years, wastewater treatment, especially for wastewaters which are not suitably recycled by conventional or normal biological processes, is getting more importance. Of late, natural biopolymer based flocculants are extensively used for wastewater treatment because of low cost, environment-friendly and easily availablility from reproducible farm and forest resources. This article introduces the development of a natural polymer based flocculant [amylopectin grafted with poly (acrylic acid) - AP-g-PAA] for treatment of synthetic effluent as well as mining industry wastewater. The graft copolymer based flocculants have been developed under optimum conditions and characterized using viscometry, 13C NMR, SEM, TGA, rheological characteristics, determination of hydrodynamic radius and CHN analysis. The flocculation characteristics of grafted and ungrafted polysaccharide have been evaluated in synthetic effluents (as Fe-ore, kaolin, Mn ore suspensions) as well as in mining industry wastewater.

Original languageEnglish
Pages (from-to)753-759
Number of pages7
JournalCarbohydrate Polymers
Issue number2
StatePublished - 20 Jun 2013
Externally publishedYes


  • Amylopectin
  • Biodegradable
  • Flocculation
  • Graft copolymer


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