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High performance polymeric flocculant based on hydrolyzed polyacrylamide grafted tamarind kernel polysaccharide (Hyd.
Sandipta Ghosh1, U Jha, Sagar Pal
1Department of Applied Chemistry, Birla Institute of Technology, Mesra, Ranchi 835 215, Jharkhand, India.
Bioresource Technology
|September 30, 2010
Summary
A novel anionic flocculant was created by modifying tamarind kernel polysaccharide with polyacrylamide. This enhanced flocculant shows superior performance in water treatment applications compared to the unmodified version.
Area of Science:
- Polymer Chemistry
- Water Treatment Technologies
- Biopolymer Modification
Background:
- Tamarind kernel polysaccharide (TKP) is a natural polymer with potential applications in water treatment.
- Polyacrylamide (PAM) is a synthetic polymer widely used as a flocculant.
- Grafting PAM onto TKP can create novel materials with improved properties.
Purpose of the Study:
- To synthesize a high-performance anionic flocculant via partial alkaline hydrolysis of polyacrylamide grafted tamarind kernel polysaccharide (PAM-g-TKP).
- To characterize the synthesized material and confirm the hydrolysis of grafted polyacrylamide chains.
- To evaluate the flocculation efficiency of the hydrolyzed product in comparison to the unhydrolyzed PAM-g-TKP.
Main Methods:
- Synthesis of PAM-g-TKP through grafting.
- Partial alkaline hydrolysis of PAM-g-TKP.
- Macromolecular characterization techniques (e.g., spectroscopy, chromatography) to confirm structural changes.
- Flocculation tests using kaolin suspension and municipal sewage wastewater.
Main Results:
- Successful synthesis of an anionic flocculant from PAM-g-TKP.
- Confirmation of partial alkaline hydrolysis of grafted polyacrylamide chains.
- The hydrolyzed PAM-g-TKP exhibited significantly better flocculation performance than the unhydrolyzed counterpart in both model suspensions and real wastewater.
Conclusions:
- Partial alkaline hydrolysis is an effective method to enhance the performance of PAM-g-TKP as an anionic flocculant.
- The modified biopolymer offers a promising alternative for efficient water and wastewater treatment.
- This study highlights the potential of combining natural polysaccharides with synthetic polymers for advanced material development.
