International Journal of Advanced Research in

Science and Technology (IJARST)


Volume 9 - Issue 1 | 2020


01. Investigations of physico-chemical parameters and its pollution implications of Kolleru lake, Andhra Pradesh: A case study.

P. Ravindra Nadh* and K.B. Reddy.

Graphical abstract

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Highlights

Kolleru Lake is the largest freshwater lake in India. It is recognized as wetland of international significance and is one of the 27 Ramsar wetlands in India. Designated as a sanctuary in 1999 Kolleru Bird Sanctuary (KBS) provides habitat to diverse flora and fauna including some rare and threatened fauna. Seventy eight fish species belong to fourteen orders, 37 families and 57 genera’s were identified in the Kolluru Lake and Upputeru Creek diversity. Various samples were collected from different areas in and around Kolleru Lake analyzed for their physicochemical characteristics such as pH, total dissolved solids, Dissolved Oxygen, Biological Oxygen Demand, Chemical Oxygen Demand, NO3, PO4 etc.,. The results of this analysis were compared with the water quality standards of BIS. The quality of water samples were discussed with respect to these parameters and thus an attempt was made to ascertain the quality of water in the sampling areas.

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02. Fossil Fuels Combustion Challenges

G.V.R. Murthy

Graphical abstract

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Highlights

With globalization there is growing demand for energy which is scarce and about 90% of global trade is carried by sea. Fossil fuels are consumed to provide energy services and about 95% of human primary energy needs comes from fuels. Though the world is transitioning from fossil fuels to sustainable renewable energy sources, the demand for fossil fuels will continue for several decades. Meanwhile fuel prices are sky rocketing and increasing global warming awareness with the regulatory authority imposing globally more stringent restrictions on carbon emissions, finding efficiency in fuel consumption and effective emission controlling is becoming a daunting task. In the operation of a vessel fuel costs accounts to nearly 30% of the operational costs and for this reason fuel consumption is an area of grave concern.

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03. Low Formaldehyde Emitting Urea Formaldehyde Resin for Plywood

Ranjana Yadav

Highlights

Urea formaldehyde resins were prepared in the laboratory using keratin through copolymerization reaction. Conventional Urea formaldehyde resins were also manufactured without the addition of keratin during the reaction. Through the determination of such reaction technology as molar ratio, adding a sequence of keratin and adding amount of keratin, we synthesized the low toxic urea resin. The resins were admixed with suitable hardener and the panels were made. Bond quality and formaldehyde content were evaluated. The results show that adding amount of 5 % keratin and adding keratin with the third feeding of urea is the best choice. From the studies, it was found that keratin addition reduces the formaldehyde content in the panel without affecting the strength properties.

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