Indexing

Abstract: This is a research work on the inhibition of mild steel corrosion in acidic medium, using Nypa palm fruit extract. The corrosion of metals is a serious problem in many industries, installations and civil services such as water and sewage supplies. One of the most useful and practical methods that is used to control and protect metals against corrosion is the use of inhibitors, especially in acidic media. This study investigated the effective use of Nypa palm fruit extract in epoxy matrix as a bio-based corrosion inhibitor in epoxy coatings for mild steel exposed to acidic solutions. This research was assessed by fourier transform infrared spectroscopy, FTIR and polarization, PDP technique. The fourier transform infrared spectroscopy revealed peaks that corresponds to functional groups, while polarization curves revealed that the extract in epoxy matrix a barrier-layer inhibitor. Inhibition efficiency increased with extract concentration increased up to 1.5g. The results revealed that the extract of the nypa palm fruit in epoxy matrix could serve as an effective inhibitor for the corrosion of mild steel in acidic medium.

Keywords: Nypa palm, Epoxy matrix, Mild steel, Corrosion, Acidic media.

Title: INHIBITION OF MILD STEEL CORROSION IN ACIDIC MEDIUM USING NYPA PALM FRUIT ACETONE EXTRACT

Author: Odike, O. C., Sofolabo, A. O., Amakoromo, T. E.

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

ISSN 2350-1030

Vol. 12, Issue 1, April 2025 - September 2025

Page No: 11-16

Paper Publications

Website: www.paperpublications.org

Published Date: 24-April-2025

Abstract: This study investigates the enhancement of thermal energy storage performance in phase change materials (PCMs) through the integration of nanoparticles, focusing on nano-enhanced PCMs (NEPCMs). A finite volume numerical model is developed to simulate heat transfer and fluid dynamics during the melting process within a cylindrical enclosure. The governing equations of mass, momentum, and energy are discretized and non-dimensionalized to evaluate the effects of nanoparticle concentration, size, and distribution on heat transfer efficiency and thermodynamic stability. Aluminum oxide (Al 2 O 3 ) is used as the nanoparticle additive, with simulation results highlighting the relationship between enthalpy, energy, and velocity. The results demonstrate that nanoparticle incorporation significantly improves thermal conductivity, stabilizes flow during phase transition, and enhances overall system performance. These findings offer crucial insights into the design and optimization of solar thermal energy storage systems using NEPCMs for sustainable energy applications.

Keywords: Heat transfer; Nanoparticle; Phase change materials; Solar thermal energy storage; Thermal energy storage.

Title: Heat Transfer-Based on Nano-particles for Thermal Energy Storage in Phase Change Material

Author: Florence Awuor Misawo, Thomas T. O. Onyango, Fredrick O. Nyamwala

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

ISSN 2350-1030

Vol. 12, Issue 1, April 2025 - September 2025

Page No: 1-10

Paper Publications

Website: www.paperpublications.org

Published Date: 15-April-2025