Green Manufacturing Approach for Waste Management in Flare Recovery Unit (FRU)

Air pollution has become an increasingly urgent environmental issue, particularly in petrochemical industrial zones.This study aims to examine the application of Flare Recovery Unit (FRU) technology to support more efficient and environmentally friendly gas waste management through a Green Manufacturing approach, in line with the principles of zero waste and net zero emission.The research method employed is a mixedmethod approach using a case study design, a sequential mixed method, conducted in two stages: beginning with a quantitative approach, followed by a qualitative approach to explain or deepen the quantitative findings.The results show that the FRU successfully captures and processes waste gases, which are then reused in the production process.The application of the reduce, reuse, and recycle principles has proven to improve energy efficiency and reduce air pollution.These findings are supported by Reduction Emission of CO Analysis, Material Flow Analysis (MFA), and Energy Flow Analysis (EFA).From an economic perspective, the FRU system is highly feasible.This is evidenced by a high Net Present Value (NPV), an Internal Rate of Return (IRR) above the viability threshold, a relatively short Payback Period (PBP), and a very feasible Benefit-Cost Ratio (BCR).These results confirm that innovations such as the FRU can become an integral part of sustainable business strategies while also supporting national environmental targets through emission reduction and improved resource efficiency.