Bioethanol Production from Paper Sludge Pretreated by Subcritical Water

Authors

  • N. Pézsa
  • P. Ailer

DOI:

https://doi.org/10.1515/433

Abstract

The depletion of oil reserves, energy dependency and rising greenhouse gas emissions urge for alternatives in all of the affected sectors. The transport sector contributes to 25% of global anthropogenic greenhouse gas emission and its energy dependency is 98%. It has to be emphasised that in the transport sector such a general solution as petrol nowadays is unlikely to be found in the future. The evaluation of alternatives depends on a lot of factors. Biofuels might serve as alternatives if they are produced in a sustainable way. Paper sludge is a waste stream of the paper industry and has a high cellulose content, which makes it appropriate for bioethanol production. The aim of this paper is to show an alternative for bioethanol production from paper sludge. Paper sludge is pre-treated by subcritical water which is followed by an enzymatic hydrolysis and a fermentation step. Optimum condition for the pre-treatment and the enzymatic hydrolysis were determined previously. This paper aims at showing the optimum conditions for the fermentation step. Experiments were performed in shake flasks.

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Published

2011-09-01

How to Cite

Bioethanol Production from Paper Sludge Pretreated by Subcritical Water. (2011). Hungarian Journal of Industry and Chemistry, 39(2), 321-324. https://doi.org/10.1515/433