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Asian Journal of Plant Sciences
  Year: 2007 | Volume: 6 | Issue: 1 | Page No.: 42-45
DOI: 10.3923/ajps.2007.42.45
 
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Biosorption of Toxic Metals from Solid Sewage Sludge by Marine Green Algae

Rafia Azmat, Uzma and Fahim Uddin

Abstract:
Biosorption of toxic metals from solid sewage sludge by marine green (Codium iyengrii) algae were observed. The process of removal of toxic metals by certain plants species are called biosorption. For this purpose the contaminated sewage sludge from sewage farm of SITE area Karachi from three different places were collected. In these places vegetables like onion (Allium cepa), spinach (Spinacia oleracea) and turnip(Brassica rapa) were cultivated which is commonly supplied to Karachi city. Heavy metals analysis of sewage sludge and plants were performed by atomic absorption spectrophotometry before and after treatment of sludge at laboratory scale. The effect of removal of metal was observed on plant growth. The results were also compared by garden soil. Results showed that concentration of metals in soil decreases by bio-sorption of toxic metal on seaweed. This helps in improving the soil quality by adsorption of metals on seaweeds. Significant improvement in size of leaves of bean plants in treated sewage sludge, were observed due to which chlorophyll contents founds to be increased as compare to non-treated plant. Reduction in metals uptake by plants from sludge as compared with non-treated sludge were recorded due to which nutritional level of plants were enhanced.
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How to cite this article:

Rafia Azmat, Uzma and Fahim Uddin, 2007. Biosorption of Toxic Metals from Solid Sewage Sludge by Marine Green Algae. Asian Journal of Plant Sciences, 6: 42-45.

DOI: 10.3923/ajps.2007.42.45

URL: https://scialert.net/abstract/?doi=ajps.2007.42.45

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