KARAKTERISASI PERTUMBUHAN DAN KEMAMPUAN NITRIFIKASI-DENITRIFIKASI SECARA AEROBIK Brevibacterium sp. SO1K DALAM MENGURAI BAHAN ORGANIK LIMBAH CAIR RUMAH POTONG AYAM
Ulya Nur Fadila, Prof. Ir. Nanung Agus Fitriyanto, S.Pt., M.Sc., Ph.D., IPM.
2024 | Skripsi | ILMU DAN INDUSTRI PETERNAKANPenelitian ini bertujuan untuk mengetahui karakter pertumbuhan isolat Brevibacterium sp. SO1K dalam medium yang mengandung limbah cair RPA dan kemampuannya dalam mengurai bahan organik melalui proses nitrifikasi-denitrifikasi secara aerobik untuk menjadi agen bioremediasi. Penelitian dilakukan dengan menumbuhkan Brevibacterium sp. SO1K pada medium cair dan padat dengan penambahan limbah cair RPA 0%, 25%, 50%, 75%, dan 100%. Pertumbuhan dan viabilitas bakteri diamati selama 48 jam. Selanjutnya kemampuan Brevibacterium sp. SO1K dalam mereduksi amonia, nitrat, dan bahan organik limbah cair RPA diuji sebelum dan sesudah proses aerasi selama 4 hari. Variabel yang diamati yaitu pertumbuhan bakteri, viabilitas bakteri, nilai Total Solid (TS), Total Volatile Solid (TVS), Total Suspended Solid (TSS), Total Dissolved Solid (TDS), Biological Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), kadar amonia, dan kadar nitrat. Data hasil peneitian dianalisis secara statistik menggunakan variansi Rancangan Acak Lengkap (RAL) pola searah dan dilanjutkan dengan uji beda Duncan’s Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa bakteri Brevibacterium sp. SO1K tumbuh optimal pada medium cair dan medium padat yang mengandung 25-50% limbah cair RPA. Brevibacterium sp. SO1K dapat melakukan aktivitas bioremediasi dengan perlakuan aerasi pada medium yang mengandung 100% limbah cair RPA dan mampu menurunkan konsentrasi BOD, COD, TS, TVS, TSS, TDS, amonia, dan nitrat. Hal ini dapat disimpulkan bahwa Brevibacterium sp. SO1K mampu menjadi agen bioremediasi untuk mendegradasi bahan organik pada limbah cair RPA dengan melakukan proses nitrifikasi-denitrifikasi.
The aim of this research was to determine the growth characteristics of Brevibacterium sp. SO1K in the media that contain chicken slaughterhouse liquid waste and its ability to reduce organic matter through the aerobic nitrification-denitrification process as a bioremediation agent. The research was conducted by growing Brevibacterium sp. SO1K in a liquid and solid media that contain chicken slaughterhouse (RPA) liquid waste at 0%, 25%, 50%, 75%, and 100%. Bacterial growth and viability was observed for 48 hours. The ability of Brevibacterium sp. SO1K to reduce ammonia, nitrate, and organic matter contained in liquid waste was tested before and after the aeration process for 4 days. The observed variables are bacterial growth, bacterial viability, the value of Total Solid (TS), Total Volatile Solid (TVS), Total Suspended Solid (TSS), Total Dissolved Solid (TDS), Biological Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), ammonia level, and nitrate level. The research data were analyzed statistically using analysis of variance with unidirectional patterns of Complete Randomized Design (CRD) and continued with Duncan’s Multiple Range Test (DMRT). The results showed that Brevibacterium sp. SO1K has optimal of cell growth in medium containing 25-50% raw RPA liquid waste. Brevibacterium sp. SO1K can performing the bioremediation activities by aeration treatment on a medium containing 100% RPA liquid waste and reducing BOD, COD, TS, TVS, TSS, TDS, ammonia and nitrate concentration. It can be concluded that Brevibacterium sp. SO1K can be a bioremediation agent for degrading organic matter in RPA liquid waste by carrying out a nitrification-denitrification process.
Kata Kunci : Brevibacterium sp., nitrifikasi, denitrifikasi, bahan organik, limbah cair RPA, bioremediasi.