Life Cycle Analysis for Hibiscus Sabdariffa Powder Manufactured by Freeze Drying for Wastewater Application

This project is focused on the preparation of the Hibiscus sabdariffa as the natural coagulant by using the freeze-drying method and its impact on the environment by performing a life cycle assessment.

This research presents the preparation of Hibiscus Sabdariffa as a natural coagulant in powder form by using freeze-drying method. The performance of the powder produced is then tested using JAR test by varying the parameters of pH, coagulant dosage, and initial concentration of the dye wastewater. The life cycle assessment (LCA) study is then conducted to compare the better method of preparation of natural coagulant which is freeze-drying of natural coagulant Hibiscus Sabdariffa to chemical coagulant, alum. LCA done is to determine, evaluate and compare natural against chemical coagulant based on 3 sustainability aspects i.e. economic, environment and social. This is to determine the feasibility of natural coagulant Hibiscus Sabdariffa in the wastewater treatment industry on whether it is a possible alternative or replacement to the currently used synthetic coagulant alum. Based on LCA, natural coagulant is the better alternative compared to chemical coagulant based on impact towards the environment and health and well-being of society. However, the implementation of natural coagulant in the water treatment industry is still not feasible as production cost of natural coagulant is more expensive compared to chemical coagulant.

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