Asian Journal of Research in Chemistry

M. N. Thakuria ¹, A. K. Talukdar ²

Affiliations
1 Department of Chemistry, Birjhora Mahavidyalaya, Bongaigaon-783380, Assam, IN
2 Department of Chemistry, Gauhati University, Guwahati-781014, Assam, IN

Abstract

Dhaligaon is a well known site in the industrial map of India. Indian Oil Corporation (Bongaigaon Refinery), one of the few refineries of India is situated here along with a large number of industries of medium and small grades. Ten samples of drinking water comprising of ring wells, tube wells, tara pumps and deep tube wells of in and around Dhaligaon area were analyzed by standard methods for three seasons namely, Monsoon, Post Monsoon and Pre Monsoon from June 2008 to May 2009. The P^H values all the water samples were found to be below the desired limit (6.5-8.5). Sixty percent of the samples crossed the permissible limits of both turbidity and iron. One sample crossed the permissible limit of lead while another touched the permissible limit. The other physico-chemical properties of the water samples were found to be bellow the respective permissible limits. Eighty percent and fifty percent of the samples indicated the presence Coliform and E. coli respectively in the drinking water. The study reveals that drinking water of the area must be properly treated before its use.

Keywords

Drinking Water, Dhaligaon, Physicochemical, Bacteriological, Chirang District.

Full Text

     

M. N. Thakuria ¹, A. K. Talukdar ²

Affiliations
1 Department of Chemistry, Birjhora Mahavidyalaya, Bongaigaon-783380, Assam, IN
2 Department of Chemistry, Gauhati University, Guwahati-781014, Assam, IN

Abstract

Chirang District of Assam, India, has been populated mostly by tribal people. Due to lack of facilities and awareness these people have been drinking water from unscientific sources. A detail analysis of 13 sources of drinking water consisting of ring wells, tara pumps, tube wells and deep tube wells covering these areas have been analyzed by standard methods. Rice husk has been used as adsorbent for adsorption of Cu (II) and Cr (III) ions from solutions containing these two ions with concentrations ten times higher than that found in these drinking water samples. Rice husk has been washed, dried and calcined and then characterized by XRF, XRD, FTIR and N₂ adsorption before use as adsorbent. Rice husk has shown remarkable activity for removal of Cu⁺² and Cr⁺³ even from solutions of these two ions with concentrations ten times higher than that found in these drinking water samples. Finally, Langmuir’s and Freundlich’s adsorption isotherms are drawn on the basis of these results.

Keywords

Malsara Rice Husk, Copper, Chromium, Drinking Water.

Full Text