STUDI POTENSI ASAM LEMAK VOLATIL DARI TANDAN KOSONG KELAPA SAWIT DENGAN FERMENTASI ANAEROB
DOI:
https://doi.org/10.35450/jip.v11i01.342Kata Kunci:
VFA, Stoikiometri Reaksi, dan TKKSAbstrak
Minyak sawit merupakan salah satu komoditas unggulan, dan Indonesia merupakan salah satu produsen kelapa sawit terbesar di dunia. Limbah padat yang dihasilkan dari aktivitas industri kelapa sawit adalah Tandan Kosong Kelapa Sawit (TKKS). Kandungan selulosa di dalam TKKS dapat dimanfaatkan sebagai substrat peruraian anaerob untuk menghasilkan volatile fatty acids (VFAs). Pada penelitian ini digunakan pengolahan awal secara kimia (NaOH 8% w/V) untuk delignifikasi TKKS sebelum diproses dalam fermentasi anaerob. Digested cow manure (DCM) digunakan sebagai inokulum. Pengoptimalan proses untuk menghasilkan VFAs merupakan tantangan karena VFAs merupakan produk intermediet di jalur metabolik peruraian anaerob menuju pembentukan metana. Penelitian ini mengkaji potensi VFAs dari TKKS dengan menvariasikan suhu terhadap proses fermentasi anaerobik TKKS untuk memproduksi VFAs di reaktor batch. Variasi suhu yang dikaji adalah kondisi mesofilik (29 ℃) dan termofilik (55 ℃). Prediksi potensi VFA dapat dihitung dengan rumus molekul empiris dengan pendekatan stoikiometri reaksi. Hasil perhitungan, potensi VFA dari TKKS adalah sebesar 44,5x10-2 mg.mgTS-1. Eksperimen menujukkan kondisi termofilik menghasilkan VFAs 60% lebih tinggi dibandingkan mesofilik, terlihat dari percent completion RT mencapai 59% dan lebih mendekati potensi teoritis.
Unduhan
Referensi
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