Jawaharlal Nehru Technological University, Hyderabad

About: Jawaharlal Nehru Technological University, Hyderabad is a education organization based out in Hyderabad, India. It is known for research contribution in the topics: Cluster analysis & Control theory. The organization has 3956 authors who have published 5277 publications receiving 48435 citations. The organization is also known as: JNTU Hyderabad & Nagarjuna Sagar Engineering College.

Preparation and characterization of properties of nanographite-based cutting fluid for machining operations:

Abstract: Soluble oils are the most popularly used oils in metal-cutting industry. However, the regular application strategy, flood cooling, involves the problem related to its disposal. Hence, mist applicat...

A purification method for improving the process yield and quality of recombinant human granulocyte colony‐stimulating factor expressed in Escherichia coli and its characterization

Abstract: A purification method employing a process-control strategy was developed for improving the yield of rhG-CSF (recombinant human granulocyte colony-stimulating factor). A purity of >/=99% with an overall yield of 2.18 g/l was achieved in the present study. Analysis of the product during purification indicated that detergents removed 72% of LPS (lipopolysaccharides) and 98% of HCPs (host cell proteins) without removing nucleic acid. Cysteine concentration was a key parameter in protein refolding. The bed height and HETP (height equivalent theoretical plates) value in the SEC (size-exclusion chromatography) column was evaluated and its impact on the resolution was studied. Formulation during SEC was found to be crucial for increasing the product yields with saving of time and process costs. The yield obtained in the present study is nearly four times higher than that reported in the literature. The product obtained was found to be acceptable for toxicological studies.

Treatment of the petroleum refinery wastewater using combined electrochemical methods

Abstract: This study explores the performance of electrochemical and combined oxidation methods for the treatment of petroleum refinery wastewater (PRW). The electrocoagulation operating parameters studied includes reaction time and applied voltage. In situ hydrogen peroxide treatments at different dosages and hybrid electrochemical systems (ECEO, ECS25, ECS33, ECEO + US33) have been studied. The efficacy of the treatment system has been evaluated in terms of reduction of phenols, COD, TOC, oil, and grease. The most effective method for PRW treatment is ECEO + US33 where the maximum % removal of phenols, TOC, COD, oil, and grease are reported to be 98, 92, 92, and 92%, respectively. The results demonstrate the technical feasibility of using hybrid electrochemical process as a possible and reliable methods for the treatment of PRW.

A numerical approach in describing ionanofluids behavior in laminar and turbulent flow

Abstract: Ionic liquids are a new class of fluids to be considered for heat transfer due to their remarkable thermophysical properties. Experimental researches on ionic liquids have increased over the last few years and, as an extension, a new class of heat transfer fluids, the ionanofluids were considered in some recent experimental studies. Ionanofluids consists in suspending little amounts of high conductive nanoparticles in ionic liquids. In spite of a lot of inconsistent reports—mainly due to the deficient understanding of the involved mechanisms—ionanofluids have been demonstrated as a new favorable heat transfer fluid. The enhanced thermal conductivity of ionanofluids over the basic ionic liquids is considered one of the driving factors for enhancing convection. Nonetheless, the thermal conductivity is the most studied parameter in spite of the important influence of viscosity variation on the convective flow. This numerical study employed Ansys Fluent commercial code and showed that a correct description of thermophysical properties may make ionanofluids a very promising new heat transfer fluid since the preliminary results are encouraging.