| Penulis/Author |
Ir. Yano Surya Pradana, S.T., M.Eng., IPM., ASEAN Eng., ACPE., APEC Eng. (1) ; ir. Yuni Kusumastuti, S.T., M.Eng., D.Eng., IPM. (2); Nur Rofiqoh Eviana Putri, S.T., M.Eng. (3); AITIA MULYAWATI W (4); DEVI SWASTI P. (5); ARINA NUR FITRI F (6); Dr. Eko Agus Suyono, S.Si., M.App.Sc. (7) |
| Abstrak/Abstract |
Microalgae is attractive biomass to produce biofuels due to the depletion of fossil fuel existence. However, one
of the problems in its application is in the harvesting step, which challenges more technologically and economically
efficient. To address this challenge, flocculation-sedimentation is proposed as a harvesting method of microalgae from its
cultivation medium. In this paper, flocculation-sedimentation of microalgae Nannochloropsis sp. was studied using
chitosan and nano-chitosan flocculant. The effects of both flocculant dosage and sedimentation time of Nannochloropsis
sp. flocculation-sedimentation were investigated. As a result, the optimum biomass recoveries for chitosan and nanochitosan flocculation-sedimentation were 97.23% and 98.44%, respectively, obtained at 0.002 g/L of dosage and 10 minutes of sedimentation time. Furthermore, the flocculation-sedimentation using nano-chitosan was more effective than chitosan for enhancing the microalgae Nannochloropsis sp. harvesting. |
