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An Environmental Solution for Managing Semiconductor Chemical Waste During the Semiconductor Manufacturing Process


Semiconductors are manufactured through stages of photolithography, etching, and thin film deposition onto wafers. They are widely used in information and communications technology, industrial instruments, space transportation, etc., and have become an inseparable part of our lives.

An abundance of chemical waste is produced during the complex manufacturing process, examples include organic waste effluent and acidic exhaust gas. Managing and reducing the chemical waste produced during the manufacturing process is a common goal that industries strive to achieve. For example, recycling chemical waste during the manufacturing of substrate semiconductors.

LCY Chemical Corp (hereinafter referred to as LCY) is helping the semiconductor industry alleviate the impact on the environment and reduce carbon emissions through our innovative Electronic-grade isopropyl alcohol (EIPA) Dual Cycle Circular Economy Model. It is our goal to facilitate sustainable economic and environmental development. Read on to understand why and how LCY is committing to reducing chemical waste during the semiconductor manufacturing process.

Positive Correlation between Manufacturing Process’s Sophistication Level and the Amount of Chemicals Used in Semiconductor Manufacturing

Electronic-grade isopropyl alcohol (EIPA) is commonly used by the semiconductor, IC, TFT-LCD, LED, and PV industries during the cleaning stage of the manufacturing process, i.e., the EIPA is commonly used during the semiconductor wafer cleaning process. EIPA is highly effective in removing watermarks and particles, making it a critical chemical that directly determines the quality of the end product.

As the wafer manufacturing process becomes more advanced, the industry’s standard for purity and cleanliness has become more stringent. As a result, the use of EIPA has increased over the years. However, after taking into consideration the difficulty in management, redistributing recycling pipelines, and the complex regulations related to waste recycling and transportation, the industry players mostly opt to burn used isopropyl alcohol (UIPA). This leads to a significant amount of carbon dioxide emission while leaving no room to recycle reusable material.

EIPA Dual Cycle Circular Economy reduces waste and carbon emissions while elevating the industry’s green competitiveness

To slow the depletion of the Earth’s resources and lower environmental impact while supporting the positive development of the semiconductor industry, LCY spent years on research and development and engaged in constant communication with its clients. In the end, LCY improved on the traditional method for the waste effluent recycling process and created the EIPA Dual Cycle Circular Economy Model to help achieve the goal of economic and environmental co-prosperity.

In the first cycle (chemical), LCY collects UIPA from the manufacturing process and distills it to once again become EIPA. In the second cycle (water), water from UIPA is completely recycled and collected for industrial use by LCY factories, achieving the goal of zero liquid discharge.

Green manufacturing is one of the critical operational strategies for the modern-day tech industry. The semiconductor industry’s waste and water management have also become the focal point.

Since the Model’s initiation in 2015, LCY is now able to collect and recycle 7500-10,000 tons of waste effluent every month. The Model effectively recycles waste, offers an innovative solution for carbon emission, and reduces the risk of complete petrochemical resource depletion. LCY’s Model drives green transformation for the semiconductor industry supply chain and helps its customers to create the industry’s green competitiveness.

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