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Abstract ABS-50

Environmental Impact Analysis of Tofu Industry Waste on Coastal Resilience in Surabaya. Raden Danang Aryo Putro Satriyono, Farah Tsanyna^ila Corresponding Author: Raden Danang Aryo Putro Satriyono

Question from Mr. Ubaidullah Haji Mat Yassin 2025.12.16 11:13:24 Was the composition of the waters identified in the laboratory analyses as part of your study (such as what specific compounds are present and the concentrations of organic/toxic compounds present due to the tofu industry waste discharge)? If yes, how did you identify them?

Reply from Mr. Raden Danang Aryo Putro Satriyono 2025.12.16 13:40:47 No, this study did not conduct direct laboratory analyses to identify the specific composition of the water. Instead, the identification of pollutants and potential impacts was achieved through a Life Cycle Assessment (LCA) simulation using openLCA software and the Ecoinvent 3.8 database. The specific compounds and values presented, such as the 1,4-DCB equivalents for freshwater ecotoxicity, are not physical concentrations measured in the field but are calculated impact potentials derived from the ReCiPe Midpoint (H) method based on inventory data collected through direct observations and interviews

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