Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Entire DC Network
A Comparative Study Of Biopolymers And Alum In The Separation And Recovery Of Pulp Fibres From Paper Mill Effluent By Flocculation, Sumona Mukherjee Ms, Soumyadeep Mukhopadhyay Dr, Agamuthu Pariatamby Dr, Mohd Ali Hashim Dr, Jaya N. Sahu Dr, Bhaskar Sen Gupta Dr
A Comparative Study Of Biopolymers And Alum In The Separation And Recovery Of Pulp Fibres From Paper Mill Effluent By Flocculation, Sumona Mukherjee Ms, Soumyadeep Mukhopadhyay Dr, Agamuthu Pariatamby Dr, Mohd Ali Hashim Dr, Jaya N. Sahu Dr, Bhaskar Sen Gupta Dr
Soumyadeep Mukhopadhyay Dr
Recovery of cellulose fibres from paper mill effluent has been studied using common polysaccharides or biopolymers such as Guar gum, Xanthan gum and Locust bean gum as flocculent. Guar gum is commonly used in sizing paper and routinely used in paper making. The results have been compared with the performance of alum, which is a common coagulant and a key ingredient of the paper industry. Guar gum recovered about 3.86 mg/L of fibre and was most effective among the biopolymers. Settling velocity distribution curves demonstrated that Guar gum was able to settle the fibres faster than the other biopolymers; however, …
Arsenic Removal From Soil With High Iron Content Using A Natural Surfactant And Phosphate, Soumyadeep Mukhopadhyay Dr, Mohd Ali Hashim Dr, Matthew Allen Mr, Bhaskar Sen Gupta Dr
Arsenic Removal From Soil With High Iron Content Using A Natural Surfactant And Phosphate, Soumyadeep Mukhopadhyay Dr, Mohd Ali Hashim Dr, Matthew Allen Mr, Bhaskar Sen Gupta Dr
Soumyadeep Mukhopadhyay Dr
An environment friendly arsenic removal technique from contaminated soil with high iron content has been studied. A natural surfactant extracted from soapnut fruit, phosphate solution and their mixture was used separately as extractants. The mixture was most effective in desorbing arsenic, attaining above 70 % efficiency in the pH range of 4–5. Desorption kinetics followed Elovich model. Micellar solubilization by soapnut and arsenic exchange mechanism by phosphate are the probable mechanisms behind arsenic desorption. Sequential extraction reveals that the mixed soapnut–phosphate system is effective in desorbing arsenic associated with amphoteric–Fe-oxide forms. No chemical change to the wash solutions was observed …
Contemporary Environmental Issues Of Landfill Leachate: Assessment & Remedies, Sumona Mukherjee Ms, Soumyadeep Mukhopadhyay Dr, Mohd Ali Hashim Dr, Bhaskar Sen Gupta Dr
Contemporary Environmental Issues Of Landfill Leachate: Assessment & Remedies, Sumona Mukherjee Ms, Soumyadeep Mukhopadhyay Dr, Mohd Ali Hashim Dr, Bhaskar Sen Gupta Dr
Soumyadeep Mukhopadhyay Dr
Landfills are the primary option for waste disposal all over the world. Most of the landfill sites across the world are old and are not engineered to prevent contamination of the underlying soil and groundwater by the toxic leachate. The pollutants from landfill leachate have accumulative and detrimental effect on the ecology and food chains leading to carcinogenic effects, acute toxicity and genotoxicity among human beings. Management of this highly toxic leachate presents a challenging problem to the regulatory authorities who have set specific regulations regarding maximum limits of contaminants in treated leachate prior to disposal into the environment to …