Detail publikace

Evaluation of the hazardous impact of landfill leachates by toxicity and biodegradability tests

VÁVROVÁ, M. KALČÍKOVÁ, G.

Originální název

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The aim of our research was to assess the ecotoxicity and biodegradability of leachates originating from two parts of a municipal landfill before and after biological treatment in the existing treatment plant. Biotests represent important tools for adequate environmental characterization of landfill leachates and could be helpful in reliable assessment and monitoring of the treatment plant efficiency. For ecotoxicity testing of landfill leachate before and after biological treatment, different organisms were chosen: the bacteria Vibrio fischeri, a mixed culture of activated sludge, duckweed Lemna minor, white mustard Sinapis alba, brine shrimp Artemia salina, and water flea Daphnia magna. For assessment of biodegradability, the method for determination of oxygen demand in a closed respirometer was used. The investigated leachates were heavily polluted, and in some cases, effluent limits were exceeded even after treatment. Results indicated that toxicity tests and physico-chemical parameters determined before and after treatment equivalently assess the efficiency of the existing treatment plant. However, the investigated leachates showed higher toxicity to Daphnia magna and especially to Lemna minor in contrast to Vibrio fischeri and Artemia salina ( neither was sensitive to any of the leachates). No leachates were readily biodegradable. Experiments confirmed that the battery of toxicity tests should be applied for more comprehensive assessment of landfill leachate treatment and for reliable assessment of the treated leachate's subsequent environmental impact. It was confirmed that treated leachate, in spite of its better physico-chemical characteristics, still represents a potential environmental risk and thus should not be released into the environment.

Klíčová slova

biodegradability tests; ecotoxicity tests; landfill leachate; toxicity; treatment

Autoři

VÁVROVÁ, M.; KALČÍKOVÁ, G.

Rok RIV

2011

Vydáno

1. 10. 2011

Nakladatel

TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND

Místo

Spojené království Velké Británie a Severního Irska

ISSN

0959-3330

Periodikum

ENVIRONMENTAL TECHNOLOGY

Ročník

Číslo

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1345

Strany do

1353

Strany počet

BibTex

@article{BUT89959,
  author="Milada {Vávrová} and Gabriela {Kalčíková}",
  title="Evaluation of the hazardous impact of landfill leachates by toxicity and biodegradability tests",
  journal="ENVIRONMENTAL TECHNOLOGY",
  year="2011",
  volume="32",
  number="12",
  pages="1345--1353",
  issn="0959-3330"
}