<strong>Aim:</strong> This study aims to determine the potency of horsetail plant to remove heavy metal concentration. <strong>Methodology and Results:</strong> There are 54 horsetail which are divided into three batches for experimental design by varying number of plants. The first batch used 12 plants, the second batch used 18 plants, and the third batch used 24 plants. The research furthermore used the experimental method with the subsurface flow system treatment. The sample was taken and observed for seven days, with two samplings daily. The results therefore showed that the first batch gave a 6.83% impact on reducing concentration Fe, a batch at 10.28%, and batch three at 16.26%. The average of reducing concentration Fe reached approximately 11%. Therefore, the detention of the process of leachate constructed wetland reactors could significantly reduce Fe contaminant in leachate. <strong>Conclusion, significance, and impact of study: </strong>This research provides a solution to mitigate the environment by adopting the accumulator of Horsetail plants (<em>Equisetem hyemale</em>) in the constructed wetlands reactor experiment. From the three reactors about 0.03 mg/L of heavy metal iron was removed after a seven day run. Therefore, aquatic plants showed a positive impact in reducing environmental pollution a trend that can be adopted in wastewater and leachate treatment technology in Indonesia.

AbstrakSampah organik rumah tangga merupakan hal yang dapat memberikan dampak negatif pada lingkungan jika tidak ditangani dengan baik. Oleh karena itu, untuk mengurangi dampak negatif tersebut maka perlu suatu upaya pengelolaan untuk menghasilkan produk yang dapat bermanfaat. Pengolahan sampah organik rumah tangga terutama sampah sayuran hendaknya dapat dilakukan dengan menggunakan lahan yang sempit mengingat sulitnya mencari lahan di kota besar saat ini. Kegiatan ini dilakukan oleh warga di sekitar Lingkungan Sukajadi Kelurahan Mekarsari, Kecamatan Pulomerak, Kota Cilegon, Banten. Lingkungan Sukajadi yang mayoritas dari mereka merupakan buruh pabrik, ibu rumah tangga dan pedagang. Melalui inovasi ini diharapkan warga Lingkungan Sukajadi mendapatkan kegiatan baru yang dapat menghasilkan uang karena produk yang mereka hasilkan dapat dijual. Pembuatan pupuk kompos dari sampah organik rumah tangga yang berupa sampah sayuran diolah dengan penambahan bioaktivator LocalMicroorganisms (MOL) yang bertujuan untuk menentukan pengaruh waktu pembuatan terhadap kandungan N, P, K, dan C dalam pupuk kompos, serta menentukan pengaruh bioaktivator MOL terhadap kandungan N, P, K, dan C dalam pupuk kompos.Kata kunci: Sampah organik rumah tangga, Pupuk kompos, MOLAbstractHousehold organic waste is something that can have a negative impact on the environment if not handled properly. Therefore, to reduce these negative impacts, it is necessary to make management efforts to produce products that can be useful. The processing of household organic waste, especially vegetable waste, should be carried out using narrow land considering the difficulty of finding land in big cities today. This activity was carried out by residents around the Lingkungan Sukajadi, Kelurahan Mekarsari, Kecamatan Pulomerak, Kota Cilegon, Banten. Lingkungan Sukajadi, the majority of them are factory workers, housewives and traders. Through this innovation, it is hoped that the residents of Lingkungan Sukajadi will get new activities that can make money because the products they produce can be sold. Making compost from household organic waste in the form of vegetable waste is processed with the addition of a Local Microorganisms (MOL) bioactivator which aims to determine the effect of manufacturing time on the content of N, P, K, and C in compost, and determining the effect of MOL bioactivators on the content of N, P, K, and C in compost. Keywords: Household organic waste, Compost fertilizer, MOL

ABSTRAK Penelitian ini memberikan solusi dalam alternatif energi terbarukan dengan memanfaatkan sampah kota (municipal solid waste) dari sumber Tempat Pembuangan Akhir  Sampah (TPA) Cilowong, Kota Serang. Penelitian ini bertujuan untuk menguji karakteristik sampah Kota Serang, yang meliputi Uji  Proksimat (proximate analysis), Uji Ultimat (ultimate analysis), Kadar Air Sampah dan Uji Nilai Kalor, serta mengetahui seberapa potensialkah timbulan sampah Kota Serang sebagai energi alternatif pengganti bahan bakar fosil. Penelitian dilakukan pada kawasan TPA Cilowong, Kota Serang. Pada laporan ini dibatasi hanya pada perhitungan Kadar Air Sampah. Metode penelitian yang  digunakan adalah dengan pengujian laboratorium dan analisis kelayakan karakteristik sampah. Teknik penelitian yaitu  dengan melakukan survei dan obervasi ke TPAS Cilowong serta wawancara mendalam dengan dinas terkait dan masyarakat yang tinggal di sekitar kawasan tersebut. Hasil penelitian ini adalah kelayakan sampah kota Serang sebagai energi alternatif pengganti bahan bakar fosil.   Kata Kunci: Energi Alternatif, Kadar Air Sampah, TPA Cilowong     ABSTRACT This research provides solutions in alternative renewable energy by utilizing municipal solid waste from the source of the Cilowong Waste Disposal Site (TPA), Serang City. This study aims to examine the characteristics of the city of Serang waste, which includes the Proximate Test (proximate analysis), Ultimate Analysis, Waste Water Content and Calorific Value Test, and find out the potential waste generation of Serang City as an alternative energy to replace fossil fuels. The study was conducted in the Cilowong landfill area, Serang City. This report is limited only to the calculation of Waste Water Content. The research method used is laboratory testing and analysis of the characteristics of waste characteristics. The research technique is by conducting surveys and observations to the Cilowong TPAS as well as in-depth interviews with related agencies and the people living around the area. The results of this study are the feasibility of municipal waste as an alternative energy substitute for fossil fuels.   Keywords: Alternative Energy, Waste Water Content, Cilowong Landfill

This research aims to identify the percentage of the mass fraction of the entire waste component and composition of municipal solid waste in final disposal area which is reflects the pattern of consumption of Serang City residents in its contribution to produce waste. The study was conducted in the area of TPA Cilowong, Serang City. The research used experimental method. The techniques of data analysis are measurement of water content, observation, and deep interview. This study found that the composition of solid waste was identified according to their characteristics, which are organic waste, plastic, paper, Styrofoam, textiles, wood, glass, and pieces. The results show that the composition of urban waste is related to people’s lifestyles and economic growth of Serang City. Organic waste such as leaves, leftover vegetables, leftover fruits, and food scraps are most found in Cilowong final disposal area. While the amount of inorganic waste most collected is plastic waste. This condition illustrates that the current tendency of the people of Serang city to use various plastics such as plastic bags or plastic food packages to meet their daily needs up to 37%.