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Effect of Eicchornia crassipes in in removing zinc and manganese from battery wastes

Effect of Eicchornia crassipes in in removing zinc and manganese from battery wastes. GERMAN EUROPEAN SCHOOL. Team members Brian Dahlems Gautham Balaya Lara Juergens Leo Hautzinger RP Staff Advisor Dr. TAN LAY PHENG Teacher in charge

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Effect of Eicchornia crassipes in in removing zinc and manganese from battery wastes

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  1. Effect of Eicchornia crassipes in in removing zinc and manganese from battery wastes

  2. GERMAN EUROPEAN SCHOOL Team members Brian Dahlems Gautham Balaya Lara Juergens Leo Hautzinger RP Staff Advisor Dr. TAN LAY PHENG Teacher in charge Mrs. Krishnaveni Kumaresan

  3. Objective • To remove the alkaline battery waste metals- zinc and manganese using Eicchornia crassipes. • To check whether the metal can be better absorbed in the powdered form or in the soluble salt form. • To check its survival in water containing the metals.

  4. Hypothesis Eicchornia, a free floating plant, could be used to remove the heavy metal wastes from the metallic waste water due to its efficient filamentous root system with larger surface area of absorption. For this reason , we predicted that the plant would remove the zinc and manganese from the metallic waste water and battery wastes.

  5. Eicchornia • Free-floating perennial aquatic plant. • One of the fastest growing plants – with thick glossy leaves it may rise over 1 meter in height. • Ability to grow in polluted or toxic water; can withstand extreme pH and temperature conditions.

  6. Alkaline Battery Waste • Alkaline battery works through reaction of zinc and manganese dioxide. • The zinc and manganese left behind serve as a pollutant, when released into water, heavy metal poisoning can result leading to bio-magnification.

  7. Methodology • Collection of Plant samples. • Acclimatization of the plants. • Preparation of the water samples. • Growing the Eicchornia in the water samples. • Analyse the plants: - FvFm value-every alternate days. -Root length- at the initial and final day. -Relative growth-at the initial and final day. -Estimation of Zinc and Manganese –initial and final. -Estimation of pH of the water sample –initial and final.

  8. Eicchornia crassipes Four water containers Water sources: Tap water Zinc powder Zinc chloride solution Manganese oxide Crucible Sterilized glass wares Sterilized collection bottles Distillation apparatus pH meter Handy PEA fluorometer Ruler Weighing scales ICP analyser Materials

  9. Results and Discussion Plants grown in tap water – W4 Plants grown in Zinc chloride solution W2

  10. Conclusion Eicchornia was very effective in clearing and absorbing the soluble form of Zinc and Manganese from the water. We therefore suggest that the Eicchornia can in fact be used as a potential metal clearing agent in polluted water with metallic wastes.

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