STRATEGI START-UP PRODUKSI BIOGAS DARI CAMPURAN SAMPAH BUAH TRANSISI OPERASI DARI KOTORAN SAPI KE LIMBAH BUAH
| Main Authors: | , Anugrah Perdana Rahmanta, ST, , Ir. Agus Prasetya, M.Eng.Sc., Ph.D. |
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| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2014
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/133626/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=74347 |
Daftar Isi:
- Adequacy of petroleum as a source of energy has almost arrived at the end of his time. Biogas is a renewable energy source that can be used to meet most of the world's energy needs. Fruit waste has good potential as a substrate because of the high content of organic matter, but some fruits contain inhibitors compounds. Citrus fruits, besides acidic, also contain limonene. In the process of anaerobic, methane-producing microorganisms (methanogens) are the most sensitive to the presence of these inhibitors. Start-up is key to the success of biodigesters in order to operate optimally. Balanced growth of methanogenic and non methanogenic microbial is developed on the start-up process so that the whole series of reactions that occur are hydrolysis, acidogenesis and methanogenesis can perform well. Start-up process can also be used as a process of adaptation of microorganisms to the inhibitor, during a given enough time. This study aims to try the start-up strategy to run semi-continuous biodigesters use fruit waste in a proportion with cow dung as substrate. Biodigester designed using a loading rate of 40 kg/(m3.day) with an effective volume of 16 liters of slurry. Feed was given at 6% TS%. Biodigester equipped with inlet feed, effluent channel expenditure, manometers, magnetic stirrer and a 12 liters gas holder. The feed composition comprises a mixture of fruit of melon, citrus and apples, mixed with a certain ratio with cow dung. The results showed that with gradual increase of fruit waste ratio on the feed composition, the biodigester can produce biogas 9.158 mL/g.d. Biodigester can handle fruit waste composition up to 35% or equivalent to 44.44 ppm limonene concentration on daily feed. Biodigesters can still operate optimally even with the lowest pH to 6.6. Highest methane content is 75.63% at the feed composition S1. The average methane concentration obtained was 62.15%. Acclimatization time required biodigesters for feed composition S0, S1, S2, S3, S4 and S5 respectively 21, 14, 18, 24, 28 and 65 days.