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Hazardous solid waste (HSW) is not only produced from industrial sources, but also from other sources such as domestic, commercial, and institutional. This waste should be managed properly because it can damage the environment and endanger health. In planning a management system of HSW, data of generation and composition are needed. This study aims to determine and analyze the generation and the composition of HSW which generated from institutional sources of Padang City, Indonesia. It consists of educational, health, and office facilities. Sampling number and determination were defined based on SNI 19-3964-1994. By analyzing 37 samples with a reliability level of 97.97%, it was found that the average generation unit of HSW of institutional sources of Padang City is 0.0807 kg/cap/day in weight basis, or 0.06559 liters/cap/day in volume basis. Waste generation of HSW from health facilities is greater than from educational facilities and office facilities. The composition of HSW found in institutional sources based on the type of its use is generally in the form of cleaning products and body care, while based on its characteristics are corrosive and toxic. The percentage of HSW in municipal solid waste generated from institutional sources ranged from 4.4 to 6.9%. Therefore, it is necessary to plan specific management for HSW from institutional sources in Padang City.

Measurement of Hazardous Solid Waste Generation and Composition from Institutional Source in Padang City, Indonesia