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Moisture Retaining Test of Biochar, Coco Coir Peat, Palm Kernel Oil Cake and Charcoal Dust Mixtures for Grounding System Purposes
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A simple method for analyzing electrical earthing system is presented. The idea behind this research is to furnish the general public particularly in Ghana to understand the effectiveness of using low resistive materials to provide low resistance values for their earthing frameworks to protect lives and guarantee hardware security. Right now, proficiency of materials accessible for free, to be specific, Palm Kernel Oil Cake (PKOC) and Tyre ash, as conductive inlay material for decreasing earth terminal resistance was assessed. Earth mat 20-cm length and 10cm breath were covered with each refilling material with their exhibition contrasted with reference to the earth mat additionally covered at a similar location with raw sand, specifically, sandy gravel at a specific area in Ghana. The outcomes show that tyre ash gives a steady earth resistance in both dry and wet climate conditions and improves it significantly as compared to PKOC. The main purpose of evaluating these two local materials as a backfilling agent is to reduce the earth resistivity which in this study was achieved successfully after 3 months of monitoring.
This paper presents a method that treats the soil by replacing a volume of the earthing portion with biochar instead of chemicals. The method contributes to reduce the earth resistance over long periods of time in order to avoid the expensive cost of these elements and their secondary effects. In the proposed method, a volume of soil from an earthing portion of 20 cm in diameter and 1 m deep is replaced with dry biochar. The earthing electrode is driven into this earthing portion. The use of this
method significantly reduced the earth resistance with one electrode from 242.0Ω to an average of 26.27 Ω with the Clay sandy soils of the Sahelian zone of Cameroon during the dry season and 2.1 Ω during the rainy season. Furthermore, smaller reductions were achieved when connecting the two such earths in parallel reducing the resistance of clay-sandy soils from 242.0 Ω to 15.2 Ω in the dry season and 1.1 Ω during the rainy season.
This paper presents a study on palm kernel oil cake (PKOC) as an earth resistance-reducing agent. The PKOC is a derivative of palm kernel nut after extraction of oil. Significant earth resistance reduction is obtained by means of replacing soil within 'critical resistance area' of an earth electrode with the PKOC.The properties of PKOC as an earth resistance-reducing agent is investigated. Among the important properties considered are moisture content, moisture holding capacities, pH (acidity) level, and its resistivity. The paper presents and discusses the techniques in the PKOC application and reports the results achieved which demonstrate effectiveness of the PKOC.
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