Use of flyash as an ion exchanger in water filtration studies for the removal of heavy metals

Abstract

Flyash as an adsorbent was found to be effective for the removal of heavy metals after generation with 2.3% HCl at about pH 6. Iron, lead, manganese and chromium ions were studied for their adsorption efficiency. In the experiments with metals separately lead showed maximum 93% adsorption. In a mixture iron showed maximum adsorption and for lead adsorption was reduced to 28%. Chromium showed minimum adsorption 6.3% in individual experiment and 13.03% in mixture. On the basis of data presented in this communication flyash may be tested at pilot plant level instead of slow sand filtration, for its potential for the treatment of drinking water.

Key words:

• Flyash
• Lead
• Iron
• Manganese
• Chromium
• Ion‐exchanger
• Adsorption
• Regeneration
• Heavy metals.

Notes

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