<![CDATA[Abstrak Pengomposan adalah salah satu solusi dalam mengolah sampah organik rumah tangga. Tujuan penelitian ini adalah untuk mengetahui laju pengomposan sampah organik rumah tangga pada berbagai konsentrasi MOL air cucian beras dan untuk mendapatkan konsentrasi MOL air cucian beras yang menghasilkan kompos sampah organik rumah tangga terbaik sesuai dengan persyaratan teknis minimal kompos padat berdasarkan Keputusan Menteri Pertanian Republik Indonesia No.261/KPTS/SR.310/M/4/2019. Perlakuan dengan menggunakan 30 kg sampah organik rumah tangga untuk satu perlakuan dan masing-masing mengandung konsentrasi MOL air cucian beras 0 ml (kontrol), 30 ml, 60 ml, 90 ml, 120 ml, dan 150 ml. Ke-enam perlakuan tersebut dilakukan 2 kali pengulangan sehingga didapatkan 12 unit percobaan. Parameter pengamatan meliputi kadar awal bahan, Total Plate Count (TPC), suhu, pH, kadar air, electrical conductivity (EC), karbon, nitrogen, C/N rasio, bahan organik (OM). Data yang diperoleh dianalisis dengan Metode Analisis Statistik Deskriptif. Hasil penelitian pengomposan selama 1 bulan menunjukkan seluruh perlakuan memiliki laju pengomposan yang berbeda-beda. Kompos yang dihasilkan memiliki nilai pH 6,8-7,2, kadar air sebesar 25,97%-33,42%, C-organik 30,13%-34,14%, N-total 1,26%-2,21%, C/N rasio 13,63%-26,37%, dan OM 51,95%-58,86%. Perlakuan penambahan 120 ml MOL air cucian beras pada 30 kg sampah organik rumah tangga adalah perlakuan terbaik karena mencapai suhu lingkungan pada hari ke-25, serta mencapai pH netral pada hari ke-21 dan telah memenuhi syarat kompos padat berdasarkan Keputusan Menteri Pertanian Republik Indonesia No.261/KPTS/SR.310/M/4/ 2019. Abstract Composting is one of solutions in household organic waste processing. The purpose of the research was to determine the rate of household organic waste composting at different concentrations of rice water MOL and to obtain the concentration of rice water MOL that produce the best household organic waste compost that accordance with minimum technical requirements of solid compost based on Decree of the Minister of Agriculture of Republic Indonesia No.261/KPTS/SR.310/M/4/2019. The treatment used 30 kg of household organic waste for one treatment and each concentrations of rice water MOL was 0 ml (control), 30 ml, 60 ml, 90 ml, 120 ml, 150 ml. The six treatments were repeated 2 times so that obtain 12 experimental units. Observation parameters include initial material content, Total Plate Count (TPC), temperature, pH, water content, electrical conductivity, carbon, nitrogen, C/N ratio, organic matter (OM). The data obtained were analyzed using Descriptive Statistical Analysis Method. Result of the composting study for 1 month showed that all the treatments had different rates of composting. The result of compost has pH value 6,8-7,2, water content 25,97%-33,42%, C-organik 30,13%-34,14%, N-total 1,26%-2,21%, C/N ratio 13,63%-26,37%, and OM 51,95%-58,86%. The treatment of adding 120 ml rice water MOL to 30 kg of household organic waste is the best treatment because it can reached ambient temperature on the 25th day and reached neutral pH on the 21st day and has met requirements of solid compost based on the Decree of the Minister of Agriculture of the Republic Indonesia No.261/KPTS/SR.310/M/4/2019.]]>
