Abstract

Bioethanol second generation (G-2) production process generated black liquor that need to treat before the disposal to prevent environmental pollution. Usually, coagulation technology using polyaluminium chloride was employed to precipitate dissolved lignin and intended to decolorize black liquor. However, this single work is not effective to treat black liquor, so that it requires another work to treat remain brownish liquor. Isolated fungal strain from Japan Trametes versicolor U 80 and Phanerochaete chrysosporium are white rot fungi that are known in ligninolytic enzymes secretion to biodegrade soluble lignin. Decolorization of black and brownish liquor is an indicator of fungi works since lignin is known as the colour agent in liquor colouration. This work evaluated black and brownish liquor decolorization using both fungi that correspond to fungal growth. Liquor toxicity was observed based on mycelial dry weight after 30 days incubation as the presumption of the connection of fungal growth and decolo...

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