Council of Scientific and Industrial Research North East Institute of Science and Technology

Jorhāt, India

Council of Scientific and Industrial Research North East Institute of Science and Technology

Jorhāt, India
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Pongener C.,Nagaland University | Bhomick P.,Nagaland University | Upasana Bora S.,Nagaland University | Goswamee R.L.,Council of Scientific and Industrial Research North East Institute of Science and Technology | And 2 more authors.
International Journal of Environmental Science and Technology | Year: 2017

New bio-adsorbent carbon materials were synthesized from the leaves and veins of Mucuna pruriens and Manihot esculenta plants, which are locally available in abundance. The synthesized carbons were activated using 0.01N HNO3. Surface area of the activated carbons from M. pruriens and M. esculenta plants was found to be quite high, i.e., 918 and 865 m2/g, respectively. Scanning electron microscopy analysis of the carbons reflects complex disorganized surface structures of different open pore sizes, shapes and dimensions. These properties of the newly synthesized activated carbons led to the development of a sand-supported carbon column, for its possible use in the removal of coliform bacteria and Escherichia coli (E. Coli) from raw water samples. The removal percentage of E. coli was found to be 100% with both the types of carbon adsorbents, as confirmed from the McCardy most probable number table. Similarly, the removal percentage of coliform bacteria was found to be 99 and 98.7% by M. pruriens and M. esculenta carbon columns, respectively. These activated carbons synthesized from locally available plants possess the characteristics of good low-cost adsorbents which can be easily used for the removal of bacteria from water by adsorption method. © 2017, Islamic Azad University (IAU).


Dutta D.K.,Council of Scientific and Industrial Research North East Institute of Science and Technology | Borah B.J.,Council of Scientific and Industrial Research North East Institute of Science and Technology | Sarmah P.P.,Council of Scientific and Industrial Research North East Institute of Science and Technology
Catalysis Reviews - Science and Engineering | Year: 2015

Metal nanoparticles supported montmorillonite with innovative characteristics has led to a new generation of heterogeneous "nanocatalyst." Such catalysts are superior to the conventional catalysts because of several factors like: higher surface area; higher activity; higher selectivity and longer life and thus, developing a newer type of sustainable environmentally friendly catalysts. Metal clay supported nanocatalysts may find a wide range of applications in the area of fine and bulk chemical industries, pharmaceuticals, fuel cell, petroleum refineries, environmental catalysis, and many other fields. This article summarizes the recent advances in the synthesis and characterization of metal nanoparticles supported on modified montmorillonite and their catalytic applications for fine chemicals synthesis. Copyright © 2015 Taylor & Francis Group, LLC.

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