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You are here: Home > Technique > Processes > Future of fibre based biomaterials for packaging > Eco-friendly flocculant prepared from date palm rachis           Update: August 31, 2009
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Researchers of the Laboratory LGP2
(September 2009)
 
Ecole internationale du papier, de la communication imprimée et des biomatériaux
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I - Eco-friendly flocculant prepared from date palm rachis

R. Khiari, M.F. M’henni, E. Mauret, and M.N. Belgacem

I - 1 - Objective

Sodium CarboxyMethylcellulose (CMCNa) is an anionic water soluble polyelectrolyte widely used in many industrial sectors including food, textile, paper, adhesives, paints, pharmaceutics, cosmetics and mineral processing. It is produced by chemical modification of cellulose, a natural renewable non toxic and biodegradable organic polymer.

In this study, different CMCNa prepared from date palm rachis were tested and flocculation performances were assessed.

The first set of experiments was devoted to the determination of the suitable conditions for coagulation-flocculation i.e.: pH = 8, concentration of the flocculants = 100mg/L and stirring velocity (during the flocculation step) = 30rpm. For these conditions, the turbidity removal using CMCNa prepared from date palm rachis (QR2) was about 95%. A comparative study involving a commercial flocculation agent showed that maximum percent turbidity abatement was 20% higher with the CMCNa obtained in our work.

I - 2 - Poster

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