Affordable Access

deepdyve-link
Publisher Website

Fungal and enzymatic treatment of mature municipal landfill leachate

Authors
  • Kalčíková, Gabriela
  • Babič, Janja
  • Pavko, Aleksander
  • Gotvajn, Andreja Žgajnar1, 2
  • 1 Faculty of Chemistry and Chemical Technology
  • 2 University of Ljubljana
Type
Published Article
Journal
Waste Management
Publisher
Elsevier
Publication Date
Jan 01, 2014
Accepted Date
Dec 19, 2013
Volume
34
Issue
4
Pages
798–803
Identifiers
DOI: 10.1016/j.wasman.2013.12.017
Source
Elsevier
Keywords
License
Unknown

Abstract

The aim of our study was to evaluate biotreatability of mature municipal landfill leachate by using white rot fungus and its extracellular enzymes. Leachates were collected in one active and one closed regional municipal landfill. Both chosen landfills were operating for many years and the leachates generated there were polluted by organic and inorganic compounds. The white rot fungus Dichomitus squalens was able to grow in the mature leachate from the closed landfill and as it utilizes present organic matter as a source of carbon, the results were showing 60% of DOC and COD removal and decreased toxicity to the bacterium Aliivibrio fischeri. On the other hand, growth of the fungus was inhibited in the presence of the leachate from the active landfill. However, when the leachate was introduced to a crude enzyme filtrate containing extracellular ligninolytic enzymes, removal levels of COD and DOC reached 61% and 44%, respectively. Furthermore, the treatment led to detoxification of the leachate to the bacterium Aliivibrio fischeri and to reduction of toxicity (42%) to the plant Sinapis alba. Fungal and enzymatic treatment seems to be a promising biological approach for treatment of mature landfill leachates and their application should be further investigated.

Report this publication

Statistics

Seen <100 times