Pengaruh kombinasi Fe dan Co terhadap pertumbuhan Chlorella sp. dan penyisihan COD limbah cair minyak sawit

Abstract

Palm oil mill effluent contains pollutants and has high content of organic matter. The treatment process of palm oil mill effluent generally with open pond system that requires extensive land and a long contact time. To reduce the number of ponds needed in the process of palm oil mill effluent, microalgae Chlorella sp. by using palm mill effluent which contains organic material as a source of nutrition for microalgae cultivation media Chlorella sp. to improve the efficiency of COD removal in palm oil mill effluent. In this research, variations of the concentration of Fe and Co micronutrients were combined with variations concentrations of Fe (0.3; 0.5 and 0.7) mg/L and Co (1 and 2) mg/L in flat-photobioreactors were carried out for 7 days with lighting by using sunlight. The results showed that at a combination of 0.5 mg/L Fe + 0.2 mg/L Co, the highest microalgae cell growth was 6 x 106 cell/ml and the highest removal efficiency of COD was 83.3%.

Pengaruh Pemasangan Fine Bubble Diffuser terhadap Nilai COD dan BOD Limbah Cair Palm Oil Mill Effluent

“…Proses pengolahan limbah cair POME ini biasanya berlangsung pada kolam terbuka dan cukup luas, dengan waktu kontak yang lama, namun dapat diatasi dengan memanfaatkan pembudidayaan mikroalga Chlorella sp. [8] ataupun dengan sistem lumpur aktif dengan bantuan aerasi sehingga mampu menyediakan oksigen terlarut yang cukup besar dan waktu tinggalnya menjadi lebih singkat [9].…”