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Environmental Situation in Bangladesh

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Environmental Situation in Bangladesh
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Introduction To Biology | Heavy Metal Contamination In Rivers |

Submitted To:
Dr. S. M. Mostafa Kamal Khan (SKK)
Assistant Professor
Department of Life Sciences

Submitted By:
Sumaiya Murshed (101 0661 030)
Kasema Sadeque (101 0154 030)
S.M. Sifat Jamil (101 0338 030)
Date of Submission: 5th April, 2011
Nabeela Polli ( 101 0212 530)

Executive Summary
A heavy metal is a member of a loosely-defined subset of elements that exhibit metallic properties. Heavy metals are simply a certain class of metallic elements. Some heavy metals that we have mentioned in this report are Lead, Mercury, Arsenic, Copper, Iron, Antimony, Barium, Cadmium, and Thallium. Among the mentioned heavy metals, we have discussed about Arsenic, Lead, and Mercury widely regarding their contamination and their effects. We have also discussed about their sources in the river water Then, we have discussed about heavy metal contamination in Bangladeshi rivers, Aquatic animals and also about the effects of heavy metal contamination in River Buriganga. Finally, we have included about the removal and removing technologies of heavy metals.

Contents Contents | Page No | 1. Definition of heavy metal | 4 | 2. Introduction to Heavy Metals | 4 | 3. Sources of Heavy Metals | 5 | 4. Figure-1. Sources of Heavy Metals | 5 | 5. Heavy Metals in River | 6 | 6. Table-1. Concentrations in reservoir sediments | 7 | 7. Arsenic | 8 | 8. Lead | 8 | 9. Mercury | 9 | 10. Heavy Metal contamination in Bangladeshi Rivers | 11 | 11. Heavy Metal contamination & its effect on the River Buriganga | 11 | 12. Figure-2. Map, of Buriganga River Stations | 12 | 13. Table-2. Concentrations in sediments | 13 | 14. Table-3. Concentrations in water | 14 | 15. Heavy Metal contamination in aquatic animals | 15 | 16. Table-4. Concentrations in the fishes | 15 | 17. Remedies for Heavy Metal | 15 | 18. Figure-3.


References: 1. Heavy Metals (incl. Lead and Iron); 1st April, 2011 http://www.home-water-purifiers-and-filters.com/lead.php Heavy Metals in Water, Sediment and Some Fishes of Buriganga River, Bangladesh; 27th March, 2011 http://www.sid.ir/en/VEWSSID/J_pdf/108220100216.pdf 8. Heavy Metal (Chemistry); 29th March, 2011 http://en.wikipedia.org/wiki/Heavy_metal_%28chemistry%29
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