http://localhost:8080/xmlui/handle/123456789/3560 Tue, 23 Jun 2026 06:26:30 GMT 2026-06-23T06:26:30Z http://localhost:8080/xmlui/handle/123456789/3563 Title: Drag reduction in a gravity‑driven fow system using polyethylene oxide solutions Authors: Rajesh, Yennam; Jeeru, Lakshmana Rao Abstract: The current study describes the use of a mathematical formula based on macro-scale balances to calculate the efux time for gravity draining a Newtonian liquid from a large conical tank through an exit pipe at the bottom of the tank when the fow in the pipe line is turbulent. The least amount of time required to drain the tank will be calculated using the efux time equation, which has been modifed using experimental data. When the fow is mixed, that is, partially laminar and partially turbulent, gravity-driven, and once through the system, the percentage reduction in efux time that the addition of water soluble polyethylene oxide polymer has on drag reduction is displayed. Therefore, the efux time equation provides the shortest amount of time needed to acquire the liquid draining from the tank Tue, 23 Aug 2022 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/3563 2022-08-23T00:00:00Z http://localhost:8080/xmlui/handle/123456789/3562 Title: Membrane Fabrication And Application For Removal Of Pollutant From Wastewater Authors: Jain, Suyog; Kathepuri, Rohit; Kashti, Rakesh; Mawal, Vijay; Rajesh, Yennam Abstract: : Dye contamination of wastewater has become one of the most critical environmental problems these days and can have adverse impacts on human health if discharged without any treatment. There are various techniques for the removal of dyes from wastewater such as adsorption, oxidation process, photocatalyst, biological decolorization, membrane separation technology, etc. In the present work, we have fabricated a polyvinylidene fluoride (PVDF) and membrane was modified by dispersing nano-sized titanium (IV) oxide (TiO2) particles in a PVDF solution. PVDF flat-sheet composite membranes were synthesized using a phase inversion method. Polyester Nonwoven fabric was used as the support layer. Membranes fabricated with support had good mechanical, thermal strength than membrane fabricated without support. We have applied the synthesized PVDF flat sheet composite membrane for the removal of Acid Blue 113 dye of concentration 100 mg/L from wastewater. PVDF/ TiO2/ non-woven polyester support membrane, PVDF/ polyester support membrane and pure PVDF membrane showed the 67.64%, 48.34% and 32.25% of Acid blue 113 dye removal, respectively. Experimental results indicated that the dye removal was found to increase with increasing the TiO2 concentration in membrane matrix. PVDF/TiO2/polyester non-woven support membrane showed the maximum Acid Blue 113 dye removal than pure PVDF membrane and it has a significant potential for the treatment of dye bearing wastewater. Sun, 05 Jun 2022 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/3562 2022-06-05T00:00:00Z http://localhost:8080/xmlui/handle/123456789/3561 Title: A NATIVE STUDY ON GERANIUM PLANTATION AND PRODUCTION OF GERANIUM OIL EXTRACTION BY USING STEAM DISTILLATION Authors: Mane, Venkat S.; Yennam, Rajesh; Daware, Gaurav Abstract: : The present work has been studied on investigation of harvesting conditions of Geranium plantation. Geranium (Pelargonium graveolens L.) commonly known as rose-scented pelargonium, rose-scented geranium or rose geranium is one of the many fragrant species of Pelargonium, belonging to the family Geraniaceae. Geranium oil is one of the top 20 essential oils in the world, which has wide application in perfumery, cosmetics and flavor industry etc. It forms a part of many high-grade perfumes, antifungal, insect repellant and antibacterial activity; thus, it has extensive use in medicinal and agrochemical field. In literature, several authors were used different traditional extraction methods; such as soxhlet extraction, hydro distillation, solvent extraction and steam distillation etc. In this work, author has used the most promised technique as steam distillation for geranium oil extraction. The purpose of this work is to investigate the suitable conditions of geranium harvesting and method of suitability for extraction of geranium with higher yield in limited facilities and lower cost. Finally, author has conducted detailed analysis on soil for harvesting conditions of geranium plants and characterization of geranium oil by using GC-Analysis. Mon, 06 Jun 2022 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/3561 2022-06-06T00:00:00Z