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Valorization of Sugarcane-Based Bioethanol Industry Waste (Vinasse) to Organic Fertilizer

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Valorisation of Agro-industrial Residues – Volume II: Non-Biological Approaches

Abstract

Indonesia is among the top ten sugarcane-producing countries in the world. Among the important sugarcane-based industry is bioethanol production. Bioethanol is recently experiencing significant growth due to the increase in need of renewable energy. However, this industry faces a challenge since it produces a huge amount of liquid waste, namely vinasse. The production of 1 L of bioethanol generates 12 L of vinasse. Vinasse is pollutant due to its high value of chemical oxygen demand (COD) and biological oxygen demand (BOD), high salt content, unpleasant odor, high acidity, and dark color. Therefore, it should be treated before releasing to the environment. However, pretreatment of vinasse is not economical. The more feasible way to handle vinasse is shifting it into valuable product. Vinasse contains nutrients which are necessary for improving soil fertility and useful for plant fertilization. There are some methods to convert vinasse to organic fertilizer. This chapter shows one case study of formulating vinasse with filter cake of sugar factory, and agricultural wastes to produce liquid organic fertilizer (LOF). LOF was synthesized via anaerobic fermentation of vinasse in the presence of promoting microbes and formulation of fermented vinasse with filter cake, lead tree leaves, and banana peel to produce LOF. The LOFs were characterized to determine the values of organic C, C/N ratio, and the contents of N, P, and K elements. LOFs were applied on the tomato plant to enhance plant growth. The more advanced process of vinasse valorization is converting it into slow release solid organo-mineral fertilizer (SR-OMF).

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Acknowledgment

The authors gratefully acknowledge the Central Java Education and Culture Office for Higher Education Facilitation Program 2015 and Universitas Negeri Semarang for providing The Research Grant No. 28.27.3/UN37/PPK.3.1/2018.

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Correspondence to Ratna Dewi Kusumaningtyas .

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Kusumaningtyas, R.D., Hartanto, D., Rohman, H.A., Mitamaytawati, Qudus, N., Daniyanto (2020). Valorization of Sugarcane-Based Bioethanol Industry Waste (Vinasse) to Organic Fertilizer. In: Zakaria, Z., Aguilar, C., Kusumaningtyas, R., Binod, P. (eds) Valorisation of Agro-industrial Residues – Volume II: Non-Biological Approaches. Applied Environmental Science and Engineering for a Sustainable Future. Springer, Cham. https://doi.org/10.1007/978-3-030-39208-6_10

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