Wyniki wyszukiwania - Biblioteka Nauki

1

Evaluation of landfill leachate pollution: findings from a monitoring study at municipal waste landfill

100%

Vaverková M. D. , Adamcová D.

Journal of Ecological Engineering

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2015

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tom Vol. 16, nr 2

19--32

EN

The monitoring that was carried out at the landfill specialized in leachate, groundwater and surface water. There were 6 sampling sites. The observed parameters were pH, BOD5, CODCr, conductivity. Leachate reached the high values in all observed parameters. Groundwater samples were collected at two monitoring wells and the sampling site (A, B, C). Surface water was collected from two sampling sites (D, E). The pH showed slightly acid values at all sampling points. The pH of surface water was slightly acid to neutral. Both BOD5 and CODCr values remained stable over the reporting period. The average conductivity value at sampling points D, E remained constant. In line with the Czech National Standard ČSN 75 7221 “Classification of Surface Water Quality” sampling point D belongs to II Water Quality Class – slightly polluted water and sampling site E to Class I water quality – unpolluted water. The authors believe that the fluctuations occurring with regard to the values of certain samples were not caused by the operation of the landfill itself, but were a result of the intense agricultural activity nearby the landfill.

2

Biodegrability of Bioplastic Materials in a Controlled Composting Environment

100%

Vaverková M. D. , Adamcová D.

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tom Vol. 16, nr 3

155--160

EN

The objective of this study was to determine the biodegradability of bioplastic materials – sponge cloths – available on the European market that are labeled as 100% biodegradable but not certified as compostable. The test was carried out in a controlled composting environment. The project length was 22 weeks. The emphasis was put on discovering whether the sponge cloths are biodegradable or not. Based on the results thereof it can be concluded that sponge cloths have not decomposed completely but their color has changed and that degradation and physical changes occurred. Samples A1, and A2 have not decomposed completely and exhibited very slow degradation rate. Sample B5 exhibited the highest degradation rate. Samples B3, B4 exhibited high degree of decomposition. The main conclusion from this study is that biodegradation of bioplastics materials strongly depends on both the environment in which they are placed and the chemical nature of the material.

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The Toxicity of Two Types of Sewage Sludge from Wastewater Treatment Plant for Plants

80%

Adamcová D. , Vaverková M. D. , Břoušková E.

Journal of Ecological Engineering

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2016

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tom Vol. 17, nr 2

33--37

EN

The aim of the present study was the estimation of the phytotoxicity of soils amended with sewage sludge with relation to Sinapis alba L. The study was realized in the system of a plot experiment. Two kinds of sewage sludge: dewatered and anaerobically stabilized sludge with dry matter content of about 24%, and dewatered sludge “Palikal” with dry matter content of about 92%. The results indicate that the tested samples are toxic. Growth inhibition at the studied samples ranged from 70.45% to 100%.

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Analysis of Biodegrability of Degradable/Biodegradable Plastic Material in Controlled Composting Environment

80%

Adamcová D. , Vaverková M. D. , Mašíček T. , Břoušková E.

Journal of Ecological Engineering

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2016

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tom Vol. 17, nr 4

1--10

EN

We have obtained eight degradable/biodegradable materials based on starch (certified compostable), sample 4–7, HDPE mixed with totally degradable plastic additive (TDPA), sample 2 and polyethylene with the addition of pro-oxidant additive (d2w), sample 1. Composition of sample 3 has not been reported. The materials have been tested as to the rate and character of their degradability/biodegradability in controlled composting conditions. Experiment explored also the effect of degradation/biodegradation of plastic bags on compost quality. The material of the original samples was subjected to assessment using the Nicolet 6700 FT-IR spectrometer, the outcome thereof was obtaining infrared spectra of the samples. For further specification the original samples were tested using the thermogravimetrical analysis. The texture of the foils at different stages of degradation is presented in the Scanning Electron Microscope (SEM) photographs. Plastic bags certified as compostable have degraded in laboratory conditions and their degradation had no impact on the quality and features of compost. Selected samples (4, 6) showed significant erosion on surface when subjected to the SEM analysis. Samples labeled (by their producers) as 100% degradable (samples 1, 2, 3) did not show any visual signs of degradation and the process of degradation had no impact on the quality and features of compost. Only one of the samples (sample 1) showed certain erosion of surface when submitted for the SEM analysis.

5

Waste management law by example of a small European commune

70%

Boas Berg A. , Zloch J. , Radziemska M. , Adamcová D. , Vaverková M. D.

Infrastruktura i Ekologia Terenów Wiejskich

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2017

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tom nr IV/1

1329--1341

EN

The aim of this article was to present the rules governing the waste management system (WMS) and identify the changes emerging as a result of new regulations being introduced by example of Wołomin commune. European, Polish and Czech regulations clearly indicate the value of the hierarchy of waste management (WM). A response to the amended law was the modification of the WMS in communes, including the Wołomin commune. Based on performed analysis and discussions, it can be stated that the municipal waste management system (MWMS) in the commune of Wołomin meets the requirements imposed by the legislator, works efficiently and positively influences the condition of the natural environment. In addition, the information obtained has been generalized and compared with the situation in the Czech Republic (CR).

6

Research of the biodegradability of degradable/biodegradable plastic material in various types of environments

70%

Adamcová D. , Radziemska M. , Fronczyk J. , Zloch J. , Vaverková M. D.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2017

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tom Vol. 26, No. 1

3--14

EN

Research was carried out in order to assess biodegradability of degradable/biodegradable materials made of HDPE and mixed with totally degradable plastic additive (TDPA additive) or made of polyethylene (PE) with the addition of pro-oxidant additive (d2w additive), advertised as 100% degradable or certifi ed as compostable within various types of environments. Research conditions were: (i) controlled composting environment – laboratory-scale, (ii) real composting conditions – domestic compost bin, (iii) real composting conditions – industrial composting plant and (iv) landfill conditions. The results demonstrate that the materials made of HDPE and mixed with totally degradable plastic additive (TDPA additive) or made of polyethylene (PE) with the addition of pro-oxidant additive (d2w additive) or advertised as 100% degradable did not biodegrade in any of the above-described conditions and remained completely intact at the end of the tests. Biodegradation of the certified compostable plastic bags proceeded very well in laboratory-scale conditions and in real composting conditions – industrial composting plant, however, these materials did not biodegrade in real composting conditions – domestic compost bin and landfill conditions.

7

Assessment Strategies for Municipal Selective Waste Collection – Regional Waste Management

70%

Boas Berg A. , Radziemska M. , Adamcová D. , Zloch J. , Vaverková M. D.

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tom Vol. 19, nr 1

33--41

EN

Waste disposal in landfill sites causes a potential hazard for the human health, as they release substantial amounts of gas, odours and pollutants to the environment. There have been vast reductions in the volume of waste being landfilled in many European countries and a reduction in the number of illegal landfills. The European Parliament’s laws obliged the Member States to amend the national waste law; the main objectives of the implemented directives are to create the conditions for the prevention of excessive waste. Directive 2008/98/EC establishes, as a goal for 2020, that waste reuse and recycling reach 50% of the total waste produced. Poland, having joined the European Union, committed itself to implementing many changes related to waste management. The amendment of the law on the maintenance of cleanliness and order in the municipalities imposed new obligations regarding the waste management (WM) on the local government and residents. By adopting a municipal waste management system, the selected municipality made all its residents responsible for their waste. However, the fact of introducing changes does not solve the waste problem. The implementation of EU directives and the development of strategic documents such as the National Waste Management Plan (NWMP) have made a clear change in the WM approach. One of the changes was the establishment of selective collection of municipal selective waste (MSW), with the issue of collecting the waste by the residents being a priority. This work describes the legal context of selective collection of MSW as one of the most effective means of reducing the amount of waste being landfilled.

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Impact of Municipal Solid Waste Landfill on Environment – a Case Study

61%

Vaverková M. D. , Adamcová D. , Zloch J. , Radziemska M. , Boas Berg A. , Voběrková S. , Maxianová A.

Journal of Ecological Engineering

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2018

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tom Vol. 19, nr 4

55--68

EN

Landfill is the oldest and the most common form of removal and disposal of waste, constituting the final disposal method of municipal solid waste (MSW). It is well known that the impact of MSW landfills can cause pollution of all environmental components. The negative environmental impact of landfills can be reduced by applying protection technologies and appropriate solid waste management technologies. The present study undertook monitoring of the Štěpánovice MSW landfill influence on the environment. The spatial characteristics of the area influenced by the landfill and the possible impact of leachate using phytotoxicity tests were carried out. The landfill itself is engineered, with bottom liner and leachate and landfill gas collection and treatment system. The landfill has not had any direct and significant influence on the surrounding environment and water quality so far.

9

Jatropha seed cake and organic waste compost: the potential for improvement of soil fertility

41%

Elbl J. , Sláma P. , Vaverková M. D. , Plošek L. , Adamcová D. , Škarpa P. , Kynický J. , Havlíček Z. , Dvořáčková H. , Brtnický M. , Kabourková E.

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tom Vol. 23, nr 1

131--141

EN

Modern agriculture faces to new challenges and problems. Application of organic waste compost (Cp) and Jatropha seed cake (JSC) represents new possibilities to improve soil organic matter (SOM) and thus reduce the risk of soil degradation. Our paper presents results of laboratory experiment. Based on these results, we conclude that the application of organic substances has positive effect on soil fertility but the impact of individual substances is different. JSC has higher influence on soil properties (microbial activity and plant production) in the short term. Conversely, Cp affects soil properties in the long term. These properties are due to their chemical composition.