Recycling of Sulfuric Acid in the Valorization of Biomass Residues

Authors

  • Dávid Havasi
    Affiliation
    Department of Chemical and Environmental Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Hungary
  • György Pátzay
    Affiliation
    Department of Chemical and Environmental Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Hungary
  • Gábor Stelén
    Affiliation
    Department of Chemical and Environmental Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Hungary
  • József M. Tukacs
    Affiliation
    Department of Chemical and Environmental Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Hungary
  • László T. Mika
    Affiliation
    Department of Chemical and Environmental Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Hungary
https://doi.org/10.3311/PPch.11175

Abstract

The biomass-based production of levulinic acid requires aqueous mineral acid as catalyst. In the present study, the possible reuse of sulfuric acid in the biomass conversion was investigated. The acid can either be reused after extracting the product or before extraction. The results show that both methods are applicable for producing levulinic acid while reducing the sulfuric acid demand of the process. Conversion of D-fructose showed similar results after five recycle steps in both post- and pre-extraction methods. The post-extraction method was successfully repeated four times with cooked tea leaves. The sulfuric acid applied for the conversion of a simulated household waste was successfully recycled eight times with pre-extraction plus once by post-extraction without significant change in the product formation.

Keywords:

Levulinic acid, recycle, biomass

Citation data from Crossref and Scopus

Published Online

2017-09-20

How to Cite

Havasi, D., Pátzay, G., Stelén, G., Tukacs, J. M., Mika, L. T. “Recycling of Sulfuric Acid in the Valorization of Biomass Residues”, Periodica Polytechnica Chemical Engineering, 61(4), pp. 283–287, 2017. https://doi.org/10.3311/PPch.11175

Issue

Section

Articles