03522ntm a2200325 i 4500 0 0 lcc 0 1 REF 10000 10000 2024-04-19 0 FIM .S58 2023 r Thesis T000003065 2024-04-19 00:00:00 1 2024-04-19 THESIS 0 0 lcc 0 0 10000 10000 2024-04-19 0 CD13503 T000003066 2024-04-19 00:00:00 2024-04-19 THESIS 100642 100648 MY-KuUP 20251125110847.0 a||||fr|||| 000 0 ta 240419t20232023my a|||fr|||| 000 0 eng d THE0009830 (Local) Hardback UMPSA eng UMP rda FIM .S58 2023 r Thesis Sitra Muhaba Yimam, author. Life cycle assessment of petrochemical wastewater treatment process for the production of methane and hydrogen / Sitra Muhaba Yimam Kuantan, Pahang : UMPSA, 2023 ©2023 xiv, 174 pages : illustrations ; 30 cm. + 1 CD-ROM rdacontent text rdamedia unmediated rdacarrier volume rda text file PDF Faculty of Industrial Management Thesis (Master of Science) -- Universiti Malaysia Pahang – 2023 Includes bibliographical references Petrochemical industries produce a huge amount of wastewater during the production of various petrochemical products. The generated wastewater is required to properly treated before being released into the environment because it contains harmful chemical compounds to human health, the aquatic ecosystem and the environment. However, studies on the lifecycle assessment of petrochemical wastewater treatment processes on energy recovery are rare. Thus, this study aims to investigate the environmental impacts of petrochemical wastewater treatment for the production of methane and hydrogen and make comparisons of environmental impacts for the cases when the two different treatment methods which means the existing method and the new method (Multistage contact oxidation and Photo-reforming) are used for the methane and hydrogen productions in the tertiary treatment stage. For the site data collection, the Petrochemical wastewater treatment plant (PWWTP) which is one of the petrochemical companies available in the Gebeng Industrial Estate, Kuantan was selected as a primary data source. Secondary data from literature and databases of LCA assessment software was obtained. The methodology adapted in this study is of a qualitative method and for the data collection the question form was sent to the treatment plant. Moreover, the collected data was analysed by using a life cycle assessment (LCA) technique which is a widely applied and ISO-guided approach was implemented. The software used for the analysis was GaBi 9.2.1. The GWP contribution by the Ex-PWWTP wastewater line was 6 and 57 times higher than those contributed by electricity generation and chemical production, respectively. This can be significantly reduced if the methane gas is collected and reused as source of energy for the treatment plant. Furthermore, changing the energy mix for electricity generation from fossil fuel to renewable energy can reduce the environmental impacts significantly. Overall, the least environmental impact was registered for the case where the photoreforming technology was implemented and the methane gas produced from the anaerobic digestion was reused. Therefore, it is recommended to use (implement) the photoreforming technology integrated with energy recovery equipment for the petrochemical wastewater treatment process at the Gebeng area treatment plant. Dissertations Faculty of Industrial Management Universities and colleges Dissertations lcc THESIS