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In this paper, waste newspaper acid hydrolysis was performed in order to produce fermentable sugars, especially glucose and xylose. Hydrolysis reactions were processed at 121 ° C using 2.59% w/w H 2 SO 4 for 15 – 120 min. It was found that hydrolysis of polysaccharides occurs according to a pseudo first order reaction rate constant k = 0.0168 min -1 and in 60 min, the concentration of sugars in hydrolyzates reaches its optimal value. After this time, dehydration reactions occur forming compounds, which act as fermentation inhibitors and are therefore impractical for the process. It was further verified by infrared spectroscopy and by elemental analysis CHNS/O that the hydrolysis solid residue, which is mainly lignin and unhydrolysed polysaccharides, has a heat power of 23 kJ.g -1

Hidrólise ácida de jornal para a produção de açúcares fermentescíveis e energia