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1st Int. Transborder Conf. of the Timor Island: Timor %u2013 Science without borderDili, 7-8 May 2025180Study The Composition of Material And Productivity of Salt Production In Kasait-Ulmera, Likisa Municipality, Timor-LesteLelis G. Fraga, Evangelinho C. Gaio, Tunencio J. Jer%u00f3nimo, Constancio A. Pinto, Ant%u00f3nio P. Belo, Domingos de Sausa FreitasDepartment of Mechanical Engineering, Faculty of Engineering Science and Technology, Universidade Nacional Timor Lorosa%u2019e, Hera, Timor-LesteAbstractSalt is an important substance for the human body to maintain blood pressure and the volume of the blood in a human body, and also other relative functions (Peres, 1994).Salt is composed of two chemical components, such as Natrium (Na) and Chloride, which represents 40% Na and 60% Cl (Tarasoutchi, 2008). According to new guidelines issued by the WHO, Adults should consume 5 grams of salt composed of less than 2 g of sodium and at least 3.5 g of potassium per day (WHO, 2013). Knowing that, the human body can be affected if it consumes more than 3 mg of salt per day from the standard consumption (Peres, 1994). Besides, as the need for salt increases, it should be anticipated with industries, and also for the preservation and chemicalization. The necessity for salt is based on the number of the population, the higher consumption of salt insist in the increasing of the production of the salt (Soekanto, 2010). In Timor%u2013Leste, there are several places potentially for the production of the salt such as Laga in Baucau municipality, Likisa, Manatuto, and Atabae in Maliana municipality. Nowadays, the production of salt in Likisa applies two methods, including modern production using membranes and traditional production through a filtering and heating process. This study aims to analyze the composition of the material in salt and the productivity of the salt in Kasai-Ulmera Likisa municipality. This study conducts direct observation in the salt production field and a laboratory experiment to identify the productivity and the composition of the material in salt. Several parameters are measured, including potential hydrogen (pH), density, and temperature of the sea water, to identify their difference.The results of this research show that the pH, density, and temperature of the sea water in modern equipment (geomembrane), were 9.3%, 942.1 kg/m3, and 29.8 oC, respectively. The pH, density, and temperature of the sea water, tradition method before the filter is 9.3%, 949.43 kg/m3, and 29.8 oC. Meanwhile, pH, density, and temperature of the sea water after the traditional filter is 9.5%, 1027 kg/m3, and the temperature of 30.8 oC. The pH consists of, the sea water geomembrane modern 9.3%, the sea water before the traditional filter of 9.3%, and the sea water after the traditional filter of 9.5%. The volume of 150 L of sea water with traditional methods can produce 112 kg of salt per day, and 90,000 L of sea water with modern methods can produce %u00b1 3751 kg of salt per day and a total of %u00b1 3863 kg or %u00b1 3.9 tons of salt per day. Based on the 2022 census, the population of Timor-Leste is 1,340,434 (Census, 2022), then the necessity of the salt per day can achieve %u00b1 7 tons. Then, the productivity of the salt in Likisa from traditional and modern methods is half the necessity of the salt in TL. In addition, the salt produced from traditional and modern methods have different chemical compositions, but they have the same color as white crystal.Keywords: Salt material, productivity, density, pH, temperature.