N-Player Decision Making Using A Non-Zero-Sum Game Theory And Cost-Benefit Analysis For Fly Ash And Bottom Ash Waste Treatment Alternatives (Case Study: Pt Petrokimia Gresik).

Djatmiko, Nabila Ramadhani (2022) N-Player Decision Making Using A Non-Zero-Sum Game Theory And Cost-Benefit Analysis For Fly Ash And Bottom Ash Waste Treatment Alternatives (Case Study: Pt Petrokimia Gresik). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

The fertilizer industry produces many Fly Ash and Bottom Ash (FABA) waste in its production process. PT Petrokimia Gresik (PKG) still must work with third parties to handle FABA so that it is not harmful to the environment. Hence funds for FABA processing costs are still required. However, the Government of Indonesia declared Fly Ash and Bottom Ash produced by electric steam power plants classified as non-B3 waste (Republic of Indonesia Government Regulation Number 22 of 2021). This condition encourages the company to utilize waste with other stakeholders interested in FABA recovery into light brick, ready-mix (concrete), paving block, and land stabilizer. Therefore, this research study assesses the optimal proportion of FABA waste for each waste treatment. A solution to this problem is proposed by modelling the problem situation into an analytical function with the corresponding parameter using cost-benefit analysis. The analytical function is followed by numerical experiments for model validation and verification. After obtaining the payoff matrix value from the analytical function, the N-player non-zero-sum game is used to seek an equilibrium point of alternative strategies owned by each stakeholder. The number of scenarios in this game is 32, which are the outcome of a combination of the four players' alternative strategies. The research resulted in a win-win solution for all players. The forth scenario is the best alternative when player 1 (Block Paving Manufacturers) uses the first strategy, namely proportion of FABA converted into block paving is 45%. The best response strategy from player 2 (BUMDes) is proportion FABA converted into both ready-mix and light brick is 20%. Player 3 (Regional Government) is a 15% FABA proportion converted into land stabilizer, and player 4 (PKG) takes 2.5% profit-sharing. When this condition occurs, the value of the game obtained by block paving manufacturers is Rp2,199,319,933, BUMDes is Rp4,100,769,340, regional government is Rp1,896,065,049, and PKG is Rp5,988,239,034.

Item Type:	Thesis (Other)
Additional Information:	RSI 658.403 Dja n-1 2022
Uncontrolled Keywords:	Cost-Benefit Analysis, Decision Making, Game Theory, Waste Treatment.
Subjects:	H Social Sciences > HD Industries. Land use. Labor > HD30.23 Decision making. Business requirements analysis.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Industrial Engineering > 26201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	12 May 2026 07:15
Last Modified:	12 May 2026 07:15
URI:	http://repository.its.ac.id/id/eprint/133162

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