Life cycle assessment of ultra pure water plant in semiconductor industry

Supandy, Mohammed (2009) Life cycle assessment of ultra pure water plant in semiconductor industry. [USQ Project] (Unpublished)

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Abstract

This project seeks to investigate the process of manufacturing ultra-pure water in a semiconductor company. Literature reviews related to water treatment and purification is carried out in order to achieve the aim of the project. Damages to human health, ecosystem quality and resources are shown in the LCA model. These results can be used as a guide for future improvement of the product or process. These improvements can also minimize the occupational health and safety risks in the process and cost in operation. LCA model is an ideal tool to reduce environmental impact and helps to achieve sustainable development. It complies with international standards (ISO 14040-14049). It is a powerful and professional tool used worldwide to assess products, processes and services. LCA can also assist regulators to formulate environmental legislation. The result show that RO plant consumes 30.6% electricity compares to UPW plant 69.3%, which is twice the amount of energy required to run the machines and technology which created ultra pure water from raw water. This has a serious impact on the environment especially the energy consume by these machines impacting the ecology, human health and resources. UPW plant in STMicroelectronics Pty Ltd characterization score per impact category is 70% whereas RO plant in Numonyx Pty Ltd characterization score per impact category is 30%. This is due to more processes involve in the production of UPW such as UV sterilizer, membrane degasifier, continuous de-ionizer, mixed bed, ultra filtration and pumps. Therefore it is recommended not to have an RO plant build in STMicroelectronics Pty Ltd facilities as the effect can be more severe in terms of electricity cost and the return of investment is long term


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Item Type: USQ Project
Refereed: No
Item Status: Live Archive
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Electrical, Electronic and Computer Engineering
Date Deposited: 19 Jul 2010 23:58
Last Modified: 20 Jul 2010 00:12
Uncontrolled Keywords: Life cycle assessment; water plant; water purification; semiconductor industry; reverse osmosis; SIMAPRO
Fields of Research (FOR2008): 05 Environmental Sciences > 0502 Environmental Science and Management > 050204 Environmental Impact Assessment
09 Engineering > 0904 Chemical Engineering > 090410 Water Treatment Processes
URI: http://eprints.usq.edu.au/id/eprint/8438

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