Nature Environment and Pollution Technology

R. Sundarakumar ¹, S. Ponnusamy ²

Affiliations
1 Department of Chemistry, Vivekananda Kendra Vidyalaya, Kanyakumari-629 702, T. N., IN
2 P. G. & Research Department of Chemistry, Sri Paramakalyani College, Alwarkurichi-627 412, T. N., IN

Abstract

Fluorine is an important trace element that forms fluoride compounds. Fluoride as salt is known for both positive and negative effects on human health. Deficiency of fluoride leads to dental caries and excess causes a severe disease called fluorosis. Intake of fluoride rich food is also responsible for fluorosis. WHO recommendation for the permissible limit of fluoride is 1.5 mg/L. The saline water and salt samples collected from Marakkanam, Villupuram District were studied with special reference to the fluoride content. The samples were drawn in the pre-monsoon period comprising eight days during May 2011. The findings revealed that the concentration of fluoride was between 0.9 mg/L and 1.4 mg/L, which is within the permissible limits. The concentration of fluoride ion increased in the salt water till the start of crystallization, which subsequently decreased with an increase in salt formation.

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P. M. Gopalswami ¹, S. Ponnusamy ², N. Sivakumar ³, A. Ilamparithi ¹

Affiliations
1 Dept. of Chemistry, Gobi Arts and Science College, Gobichettipalayam -638 453, T. N., IN
2 Department of Chemistry, Government Arts College, Coimbatore-641 018, T. N., IN
3 Department of Chemistry, Chikkanna Government Arts College, Tiruppur-641 602, T. N., IN

Abstract

Activated carbon is one of the cheapest materials widely used in removal of pollutants fromwater and industrial effluents. Various wastematerials, obtained from agriculture like rice husk, sugarcane bagasse, oil palmshell, coconut shell, coconut husk, bamboo cane, pongam seed coat, palm tree, cashew nut sheath, rubber seed coat have been reported as the raw materials for preparation of activated carbon. In this study carbon was prepared from Morus plant by chemical activation method. These samples were then activated at 800°C in a muffle furnace. The characterization studies have been carried out to assess their suitability as carbon adsorbents in treatment of dye house effluents. Batch adsorption studies were conducted to evaluate the effect of contact time and adsorbent dose on the removal of methylene blue dye at a temperature of 30°C. The results revealed that they are good adsorbents for the removal of the dye.

Keywords

Low Cost Activated, Carbon, Morus Plant, Adsoption, Methylene Blue.

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