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Behera B.C.,North Orissa University | Patra J.K.,Biju Pattnaik University of Technology | Sarangi K.,CSIR - Institute of Minerals And Materials Technology | Dutta S.K.,Indian Institute of Science | Thatoi H.N.,Biju Pattnaik University of Technology
Chemistry and Ecology | Year: 2013

This study aimed to assess soil nutrient status and heavy metal content and their impact on the predominant soil bacterial communities of mangroves of the Mahanadi Delta. Mangrove soil of the Mahanadi Delta is slightly acidic and the levels of soil nutrients such as carbon, nitrogen, phosphorous and potash vary with season and site. The seasonal average concentrations (μg/g) of various heavy metals were in the range: 14 810-63 370 (Fe), 2.8-32.6 (Cu), 13.4-55.7 (Ni), 1.8-7.9 (Cd), 16.6-54.7 (Pb), 24.4-132.5 (Zn) and 13.3-48.2 (Co). Among the different heavy metals analysed, Co, Cu and Cd were above their permissible limits, as prescribed by Indian Standards (Co=17 μg/g, Cu=30 μ g/g, Cd=3-6 μ g/g), indicating pollution in the mangrove soil. A viable plate count revealed the presence of different groups of bacteria in the mangrove soil, i.e. heterotrophs, free-living N2 fixers, nitrifyers, denitrifyers, phosphate solubilisers, cellulose degraders and sulfur oxidisers. Principal component analysis performed using multivariate statistical methods showed a positive relationship between soil nutrients and microbial load. Whereas metal content such as Cu, Co and Ni showed a negative impact on some of the studied soil bacteria. © 2013 © 2013 Taylor & Francis.


Thatoi H.,Biju Pattnaik University of Technology | Dash P.K.,Biju Pattnaik University of Technology | Mohapatra S.,Biju Pattnaik University of Technology | Swain M.R.,Indian Institute of Technology Madras
International Journal of Sustainable Energy | Year: 2014

Bioethanol, an alcohol produced by fermentation of plant biomass containing starch and sugars by micro-organisms, considered as a dominant form of fuel for future. Production of this renewable fuel, especially from starchy materials such as tuber crops, holds a remarkable potential to meet the future energy demand because of its high production and comparitively less demand for use as food and fodder. This review focuses on the world bioethanol production scenario from various tuber crops, namely cassava, sweet potato, potato, yam, aroids, sugar beet, etc., fermentation techniques and micro-organisms used in fermentation process along with its future prospects. The advances in metabolic pathway engineering and genetic engineering techniques have led to the development of micro-organisms capable of efficiently converting biomass sugars into ethanol. Several biotechnological tools that are also available for the improvement of microorganisms to meet the harsh environments typically met with certain industrial fermentation process are also discussed. © 2014 © 2014 Taylor & Francis.


Gantayet A.,Siksha ‘O’ Anusandhan University | Mohanty S.,Biju Pattnaik University of Technology
2015 IEEE Power, Communication and Information Technology Conference, PCITC 2015 - Proceedings | Year: 2015

With the elevated loading and incremental demand for electrical energy, distributed energy resources (DER) such as solar photovoltaics, wind and biomass energy are becoming more pronounced in distribution systems. Location and capacity allocation of DERs have intensely impacted on the system losses in the distribution network. This paper presents an analytical approach to envisage the impact of Distributed Generation (DG) on network power losses, voltage profile and voltage stability. A detailed performance analysis is carried out on 12 node, revised 12 node and 69 node radial distribution network. © 2015 IEEE.


PubMed | Biju Pattnaik University of Technology and North Orissa University
Type: | Journal: Journal of environmental management | Year: 2016

Acid as well as ultrasono-assisted acid pretreatment of lignocellulosic biomass of two Pennisetum sp.; Denanath grass (DG) and Hybrid Napier grass (HNG) have been investigated for enhanced delignification and maximum exposure of cellulose for production of bioethanol. Screening of pretreatment with different acids such as H

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