Pollution Research Paper

Vol 39, Issue 3, 2020; Page No.(PAL S. )

QUALITY ASSESSMENT OF SURFACE WATER OF ANASAGAR LAKE, AJMER (RAJASTHAN, INDIA) AND THEIR PURIFICATION USING SEAWEED DERIVED GRAPHENE NANOSHEETS

AKHILESH RAWAT, MUKESH SHARMA A. AND C. P. SINGH CHANDEL B.

Abstract

The water is considered as the most important molecule for the development and nourishment of life on the earth. Water is the first necessity of humans in almost all activities such as drinking, domestic, irrigation, recreational and industrial activities. Water quality and pollution are recognized as an enormous issue in big cities. This work presents the water quality assessment and purification of surface water of Anasagar Lake, Ajmer (Rajasthan, India). Anasagar Lake is a freshwater lake located in the center of the Ajmer city and the lake is highly polluted due to the municipal waste of Ajmer city. For the physicochemical analysis, six surface water samples were collected from six different sampling sites of Anasagar Lake during the period of March 2017. Various physicochemical parameters such as temperature, pH, electrical conductivity (EC), total dissolved solids (TDS), fluoride (F–), sulfate (SO4–) and nitrate (NO3–) were evaluated using standard analytical procedures. Seaweed derived graphene nanosheets (GNs) were tested for the purification of highly contaminated water samples. The GNs has successfully removed all toxic contaminants from surface water samples of Anasagar Lake. The concentration of all constituents of GNs treated water was found to be under the limit as compared with the water quality standards of WHO and BIS. The GNs treated water has been found to be safe for irrigation, recreation, animal drinking, and domestic activities.

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