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Journal of Applied Sciences
  Year: 2004 | Volume: 4 | Issue: 2 | Page No.: 308-312
DOI: 10.3923/jas.2004.308.312
Utilization of Nitrogen Containing Pregelled Starch Derivatives as Biodegradable Polymers for Heavy Metal Ions Removal
Kh. M. Mostafa and Abdul-Rahim Samerkandy

Abstract:
Two type of nitrogen containing pregelled starch derivatives having amide groups (CONH2) were used in heavy metal ions removal from its solutions. These pregelled starch derivatives were carbamated pregelled starch (CPS) and poly (methacrylamide)-pregelled starch graft copolymer (PMamPSGC). Different factors affecting adsorption of metal ions onto these substrates such as metal ion concentration, pH, treatment time and temperature as well as type of starch derivatives were studied. Results obtained reflect the following findings: (a) the adsorption values of both nitrogen containing starch derivatives in question increase by increasing the metal ion concentration up to 50 mmol L-1 then levels off, (b) poly (methacrylamide)-pregelled starch graft copolymer was selective adsorbent for Hg2+ at pH 0.5-1, (c) The adsorption values on these pregelled starch derivatives at different metal ions follow the order: Hg2+ > Cu2+ > Zn2+ > Pb2+, (d) The adsorption efficiency % of metal ions in case of poly (methacrylamide)-pregelled starch graft copolymer is higher than that in case of carbamated pregelled starch irrespective of the metal ion used, (e) The adsorption values is higher at 30°C then decreases by raising the temperature to 50 and 70°C and (f) The adsorption values increase by increasing the treatment time up to 5 h then levels off.
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How to cite this article:

Kh. M. Mostafa and Abdul-Rahim Samerkandy, 2004. Utilization of Nitrogen Containing Pregelled Starch Derivatives as Biodegradable Polymers for Heavy Metal Ions Removal. Journal of Applied Sciences, 4: 308-312.

DOI: 10.3923/jas.2004.308.312

URL: https://scialert.net/abstract/?doi=jas.2004.308.312

 
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