An assessment of the genotoxic effects of landfill leachates using bacterial and plant tests

Kwaśniewska, Jolanta; Nałęcz‐Jawecki, Grzegorz; Skrzypczak, Agata; Płaza, Grażyna; Matejczyk, Marek

doi:10.1016/j.ecoenv.2011.08.020

Cited by 30 publications

(20 citation statements)

References 36 publications

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“…Investigation of the toxicity of the leachate generated from Xingou Municipal Landfill in China, performed by Li with coauthors [40] indicated that the lower leachate concentrations stimulated the germination, growth and cell division, and did not induce obvious increase in micronucleus (MN) frequency in root tips of Triticum aestivum (wheat), while the higher concentrations inhibited these processes. Genotoxicity of the leachate samples in A. cepa also has been found in the studies of Klauck et al [13] and Kwasniewska et al [41]. The least RGR of L. minor was calculated in the diluted leachate by 2-fold (Fig.…”

Section: Resultssupporting

confidence: 80%

Impact of closed Kairiai landfill on the Ginkūnai Pond, Lithuania

Montvydienė

Marčiulionienė

Kazlauskienė

et al. 2014

The 9th International Conference "Environmental Engineering 2014"

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The main goal of this study was to investigate the impact of the closed Kairiai municipal landfill located near Šiauliai City on the Ginkūnai Pond, into which the leachate from the landfill is released. The main aim of our study was to determine the phytotoxic impact of landfill leachate, water and bottom sediments of the Ginkūnai Pond and Švedė Creek, as well as drainage channel through which the leachate is discharged into the pond. The main characteristics of physico-chemical analysis of the leachate, water and bottom sediments of ecosystem tested were assessed. The amount of chlorophyll "a" and dominant groups of phototrophic organisms were also investigated. The tests were performed during 2012 and 2013. Phytotoxicity tests were carried out using seed germination and root growth test of Lepidium sativum and relative growth rate (RGR), biomass, and amount of total chlorophyll of Lemna minor. The leachate was very toxic to both tested plants. The water of the Ginkūnai Pond was moderately toxic for root growth of L. sativum and in many cases non-toxic or slightly toxic to L. minor. Investigations of the impact of Kairiai landfill on the Ginkūnai Pond confirmed the expected existence of the gradient of the usually measured physic-chemical parameters in water of the receiving pond. A strong trend of the decrease of chlorophyll "a" content across the pond was revealed. However, the data of phytotoxicity tests did not show similar tendency. Phytotoxicity testing and physico-chemical investigation showed that the closed Kairiai landfill is still remains a serious source of long-lasting permanent pollution, which affects the neighboring water bodies.

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Section: Resultssupporting

confidence: 80%

Impact of closed Kairiai landfill on the Ginkūnai Pond, Lithuania

Montvydienė

Marčiulionienė

Kazlauskienė

et al. 2014

The 9th International Conference "Environmental Engineering 2014"

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“…Therefore, soil as an integral element in the environment needs protection against heavy metal contamination. Soil contamination has dire consequences such as decreasing microbial activity, damaging ecosystems and agricultural productivity, polluting water resources and causing illhealth in humans and animals (Iskandar 2000;Kwasniewska et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Compositional and metabolic quotient analysis of heavy metal contaminated soil after electroremediation

2015

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Heavy metal soil contamination provides a danger both to human and environmental ecosystem health and is still on the rise in many developing countries. Electroremediation provides an innovative method to remedy contamination of soils by heavy metals. Fundamental to the acceptance of any soil remedial technique is proof that positive benefits outweigh the negative impacts, in terms of soil health. The environmental effect of electroremediation of heavy metals contaminated soil by some biological indicators was evaluated. A soil contaminated with Zn, Pb, Ni, and Cd was used in a laboratory experiment. Treatment was imposed with a constant voltage gradient of 0.83 V/cm for 20 days. Results indicated that the physicochemical changes caused by the electroremidiation process on the soil microbial population (actinomycetes and gram-positive and negative bacteria), soil respiration and microbial biomass were significant (p \ 0.01). At the commencement of the study, soil microbial activity was reduced, due to physicochemical changes in pH, amount of moisture and the changes in the levels of heavy metals in the soil. The greatest reduction on the microbial activity was close to the cathode where high levels of heavy metal concentrations and high pH were demonstrated. The metabolic quotient index [qCO 2 ] was used to achieve a more refined evaluation, compared to analysis of soil respiration and microbial biomass alone. Accordingly, high amounts of qCO 2 near the cathode show the unfavorable living conditions of such microorganisms in these sections.

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“…Additionally, both quantity and quality of leachate can vary at different sampling sites on the same landfill. Apart from organics and other hazardous substances, landfill leachates, according to the literature , contain also ammonium nitrogen (NH 4 + ) in high concentrations.…”

Section: Introductionmentioning

confidence: 99%

Biological Treatment of Landfill Leachate at Elevated Temperature in the Presence of Polyurethane Foam of Various Porosity

Koc-Jurczyk

Jurczyk

2016

CLEAN Soil Air Water

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Application of sequencing batch reactors (SBR) for treatment of leachate from old, stabilized landfills, could be still an economically viable solution, as far as nitrogen removal is concerned. Very low amounts of accesible organic compounds requires an unconventional approach to treatment technology. In this paper the authors proposed utilisation of polyurethane (PU) foam of various porosity as a biomass carrier, hydraulic retention time (HRT) extended to 2 days and temperature elevated to 37°C, to stimulate simultaneous nitrification and denitrification (SND). The porosity of PU carriers had no effect on the efficiency of organic compounds removal, whilst the ammonium nitrogen (N-NH 4 þ ) removal efficiency was highest in the reactor (SBR2) equipped with PU cuboidshape carriers of 30 pores per inch (ppi), reaching 77.6%. In the reactor SBR3 filled with 15 ppi foam, the N-NH 4 þ removal efficiency was much lower (54.2%), but still better than observed in reference reactor, SBR1, operated with suspended activated sludge only (46.3%). The average free ammonia concentration in the effluents ranged from 140.18 to 347.98 mg/L at pH 9.6, depending on the reactor. Neither nitrites nor nitrates were found in the effluents, and the kinetics of N-NH 4 þ removal proceeded according to the first-order reaction.

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An assessment of the genotoxic effects of landfill leachates using bacterial and plant tests

Cited by 30 publications

References 36 publications

Impact of closed Kairiai landfill on the Ginkūnai Pond, Lithuania

Impact of closed Kairiai landfill on the Ginkūnai Pond, Lithuania

Compositional and metabolic quotient analysis of heavy metal contaminated soil after electroremediation

Biological Treatment of Landfill Leachate at Elevated Temperature in the Presence of Polyurethane Foam of Various Porosity

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