| dc.description.abstract | Modern technology has enabled the processing of flue gases from power plants, such as SO₂, into
economically valuable products. This process not only helps reduce pollution but also creates
opportunities for optimal waste utilization. One promising innovation is the conversion of SO₂ into
Sodium Thiosulfate Pentahydrate through Flue Gas Desulfurization (FGD). Sodium Thiosulfate
Pentahydrate is used in various applications, such as a fixer in photography, a dechlorinating agent
in water treatment, a laboratory chemical, an antidote for cyanide poisoning, and a reducing agent in
the textile and paper industries. Indonesia currently imports Sodium Thiosulfate Pentahydrate,
making the establishment of a domestic production facility a strategic opportunity. To meet local
demand and target export markets, a Sodium Thiosulfate Pentahydrate plant is planned to be built in
Gresik, East Java, with a production capacity of 51,000 tons per year. The plant will utilize flue gas
from the Paiton power plant, Sodium Carbonate supplied by PT. Lianyungang Huaihua International
Trade in China, and Sulfur sourced from PT. Petrokimia Gresik as raw materials. The plant is
designed to occupy an area of 8,383 m². The plant’s operation will require 32,523.03 kg/hour of
water, 9.98 MW of electricity, 54,228.99 kg/hour of steam, and 56.073 m³/hour of compressed air. It
will also employ 168 workers. According to the economic analysis, the total capital required amounts
to Rp 2.21 trillion, with production costs of Rp 1.39 trillion. The return on investment (ROI) is 43 %
before tax and 33 % after tax, with a payback period (POT) of 3 years after the plant becomes
operational. The break-even point (BEP) is recorded at 23 %. Based on these calculations, the
establishment of the Sodium Thiosulfate Pentahydrate plant in Indonesia is projected to have
significant economic potential.daftar | en_US |
