Saat ini pengolahan sampah organik dapat dilakukan dengan berbagai cara, salah satunya dengan bantuan lalat tentara hitam (larva black soldier fly-BSF). BSF merupakan jenis serangga yang sangat tepat untuk melakukan penguraian sampah organik. Penelitian ini bertujuan untuk mengolah sampah organik rumah tangga dengan bantuan BSF yang dapat menghasilkan produk samping berupa pupuk organik cair yang berasal dari leachate yang dihasilkan selama pengolahan. Dalam penelitian ini, sampel dibagi kedalam 10 variasi sampel uji dan dibandingkan dengan Keputusan Menteri Pertanian Republik Indonesia No. 261 Tahun 2019 tentang Pupuk Organik, Pupuk Hayati dan Pembenahan Tanah. Hasil uji laboratorium pupuk organik cair, didapatkan bahwa hanya parameter logam berat, pH, dan Salmonella sp. yang telah memenuhi baku mutu. Perlakuan aerasi mengurangi kandungan E.coli dan Salmonella Sp. Perlu dilakukan penelitian lebih lanjut dengan pengomposan dan pemanenan sampel leachate pada sampel pupuk cair yang lebih lama agar hasil yang didapatkan dapat memenuhi baku mutu yang digunakan.

The 35 Community Health Centers in Depok City have limited resources and other duties besides serving patients. This limitation makes the Community Health Centers difficult to comply with the regulation of Regulation of Environmental and Forestry Ministry Number 56 Year 2015 on “Procedures and Technical Requirement of Hazardous Waste Management from Healthcare Facilities”, therefore there is need for adjustments and appropriate decision making in hazardous waste management, which can be done using Analytical Hierarchy Process (AHP) methods. AHP methods use 3 principles, which is hierarchy making, priority determination, and consistency ratio. The objective of this research is to choose the most optimal alternative for hazardous medical waste management, starting from reducing, sorting, storing, transporting, treatment, until burial. After conducting pair comparison from all respondent, the data processing is done using Expert Choice 11 software. This software helps in choosing alternatives via many criteria by inputting the comparison value from each respondent and display the priority value from each alternatives. The chosen alternative is as follows: reducing wasteby a good housekeeping, sorting phase with two containers or plastic bags, storing phase with freezer as described in Regulation of Environmental and Forestry Ministry Number 56 Year 2015, transportation phase using closed truck, off-site treatment, and burialusing secure landfill.

Purpose of the study: Hazardous solid medical waste, contains infectious, pathologic, sharp objects, pharmaceuticals, cytotoxic, chemical, radioactive, pressurized containers, and has a high heavy metal content and endangering the community. The Minister of Environment and Forestry of the Republic of Indonesia No.56 of 2015 regulates hazardous waste, but the study of the implementation and compliance with the regulation are still limited. Methodology: Qualitative descriptive method is carried out to describe and explain the condition of variables contained in the object of research. Main Findings: In general, the health center in Depok has carried out sorting consisting of sharp medical waste and non-sharp and reduced hazardous waste. The composition of non-sharp hazardous medical waste ranges from 55% to 96%. Applications of this study: Primary data collection was carried out in 11 Health Center in 11 sub-districts of Depok City. Novelty/Originality of this study: The number of sub-district residents does not always determine the average number of patients coming from the health center which ranges from 100-300 patients. With the average number of patients coming in at 300 people/day, Cipayung health center produced 1,821 grams/day, in contrast to Pancoran Mas and Sukmajaya which produced 2,398 and 3,357.

During the COVID-19 pandemic, the increased use of plastic for personal protective equipment (PPE), single-use plastic bags, and food packaging raised significant environmental concerns. This study aimed to investigate the shape, abundance, and type of microplastics in the sediment of Jakarta Bay, specifically Tanjung Priok, Ancol Beach, and Sunda Kelapa Port. Sediment was collected using an Ekman sediment grab sampler and was extracted using the density separation method. The microplastics were counted and categorized according to the shape under a microscope. The differences in microplastic abundance in three different stations were determined using a one-way ANOVA. The polymer of microplastics was identified using Fourier Transform Infra-Red (FTIR). The results show that the abundance of the microplastics from coastal sediment was highest in the Sunda Kelapa Port (45066.67 ± 5205.13 particle/kg dry weight), which is significantly different (p<0.05) from Tanjung Priok (40533.33 ± 2444.04 particle/kg dry weight) and Ancol Beach (34666.67 ± 2444.04 particle/kg dry weight). Fragments dominated the shape of microplastic in Tanjung Priok, Ancol Beach, and Sunda Kelapa Post, comprising 36%, 40%, 38%, respectively, followed by fiber, film, and pellet. The FT-IR tests indicated that polypropylene (PP), polyethylene (PE), polystyrene (PS), and polyamide are the most prevalent microplastic polymers.

Lake Toba is one of ten programs the Ministry of Tourism in the Republic Indonesia, as a priority tourism area because of its unique potential. The Ambarita is one of 16 villages that are priority areas in Simanindo Subdistrict, Samosir Regency. At present, the quality of Lake Toba's waters has been polluted, the pollution is caused by domestic waste water which is discharged directly without prior treatment. The purpose of this study is to plan a domestic wastewater pipeline network and recommendations for wastewater treatment plants with a centralized system in the Ambarita. This study uses a data analysis method by using a population projection approach with maximum capacity to be planned in the draft MasterPlan of Ambarita and literature study for WWTP technology recommendations. The results showed that the total discharge of wastewater in the Ambarita was 0,06495 m3/second and the results of laboratory tests showed the parameters that exceeded quality standard were free chlorine and fecal coli. Piping network planning in the Ambarita uses concrete type pipes with diameters of 100 mm, 125 mm, 150 mm, 200 mm and 250 mm. The selected Waste Water Treatment Technology recommended is anaerobic-aerobic biofilter technology with removal efficiency for fecal coli and free chlorine are 99.9% and  65%.