Satu aspek penting dalam penangan wabah Corona Virus Disease 2019 (Covid-19) adalah penangangan limbah medis yang dihasilkan, baik dari pasien maupun petugas medis. Pemerintah pusat dan Pemerintah Daerah Provinsi Jawa Barat telah mengeluarkan kebijakan-kebijakan terkait pengelolaan limbah medis infeksius yang berasal dari fasilitas pelayanan kesehatan, rumah sakit darurat, maupun rumah karantina/isolasi mandiri.Terdapat 5 (lima) kebijakan dari pemerintah pusat dan 2 (dua) kebijakan Pemerintah Provinsi Jawa Barat yang ditinjau berdasarkan tahapan pengelolaan limbah B3.Hasil tinjauan menujukkan bahwa, meskipun kebijakan dikeluarkan tidak secara terpadu, namun tahapan pengelolaan limbah medis infeksius telah ditetapkan dengan cukup jelas dan dapat dijadikan sebagai acuan. Acuan ini sangat penting untuk pelaksanaan pengelolaan limbah medis infeksius pada masa darurat sekarang ini, untuk menghindari terjadinya penyebaran virus melalui media limbah medis.

In the last few decades, the utilization of coal to generate electricity was rapidly increasing. Consequently, the production of coal combustion ash (CCA) as a by-product of coal utilization as primary energy sources was increased. The physical and geochemical characteristics of CCA were site-specific which determined by both inherent coal-source quality and combustion condition. This study was intended to characterize the physical, chemical and mineralogical properties of a coal-combustion ash (CCA) from a site specific power plant and evaluate the leachate characteristic of some scenario on the co-placement of CCA with coal-mine waste rock. The physical properties such as specific gravity, dry density, porosity and particle size distribution were determined. Chemically, the CCA sample is enriched mainly in silica, aluminum, iron, and magnesium along with a little amount of calcium and sodium which includes in the class C fly ash category. Moreover, it is found that the mineral phases identified in the sample were quartz, mullite, aragonite, magnetite, hematite, and spinel. Co-placement experiment with mudstone waste rock shows that the CCA, though it has limited contribution to the decreasing permeability, has important contributed to increase the quality of leachate through releasing higher alkalinity. Moreover, addition of CCA did not affect to the increase of the trace metal element in the leachate. Hence, utilization of CCA by co-placement with coal mine waste rock in the dumping area is visible to be implemented

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ABSTRAKUpaya pencegahan pembentukan air asam tambang dapat dilakukan dengan metode dry cover yang dilakukan dengan menutup batuan yang berpotensi membentuk asam (PAF) dengan batuan yang tidak berpotensi membentuk asam (NAF). Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan fly ash dan bottom ash sebagai NAF dalam mencegah pembentukan AAT dengan cara mengurangi kontak antara mineral sulfida dengan air dan oksigen. Metode Free Draining Column Leach Test digunakan untuk memprediksi pembentukan AAT yang terbentuk. Simulasi perbedaan perlakuan sampel digunakan dengan 2 variasi pelapisan sampel NAF dan 3 variasi pencampuran sampel NAF. Hasilsimulasi menunjukkan bahwa dengan variasi pelapisan sampel NAF didapatkan kualitas air yang lebih baik. Penggunaan variasi pelapisanmeningkatkan nilai pH, menurunkan nilai TDS serta DHL sebagai hasil oksidasi pirit didalam batuan. Untuk menunjang hasil analisis kualitas air, pengujian statistika juga digunakan untuk mengetahui perbedaan dari variasi penggunaan fly ash dan bottom ash terhadap perubahan nilai pH, TDS dan DHL yang dihasilkan. Kata kunci : Fly ash, Bottom ash, pH, TDS, DHL ABSTRACTAcid mine drainage prevention efforts can be carried out by the method of the dry cover which is done by closing the rock that is potentially acid forming (PAF) with the non-potentially acid forming rock (NAF). This study aims to determine the effect of the fly ash and bottom ash as NAF in preventing the formation of AMD by reduce contact between the sulfide minerals with water and oxygen. The method of Free Draining Column Leach Test is used to predict the formation of AMD formed. Simulated difference in sample treatment is used with 2 variations in the coating samples of NAF and 3 variations of the mixing a sample of NAF. The simulation results show that with the variation of the coating sample of NAF obtained better water quality. The use of variations of the coating increases pH value, lower the value of TDS as well as DHL as a result of oxidation of pyrite. To support the results of water quality analysis, the statistics test is also used to determine the difference from the variation of the use of fly ash and bottom ash to change the pH value, TDS and DHL that is produced.Keywords: Fly ash, Bottom ash, pH, TDS, DHL

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