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Piotr Koszelnik   Dr.  Institute, Department or Faculty Head 
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Piotr Koszelnik published an article in June 2018.
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Article 1 Read 0 Citations A new concept for risk analysis relating to the degradation of water reservoirs Krzysztof Boryczko, Lilianna Bartoszek, Piotr Koszelnik, Jan... Published: 29 June 2018
Environmental Science and Pollution Research, doi: 10.1007/s11356-018-2634-6
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This paper presents a proposal for a procedure by which to analyse the risk of reservoirs being degraded. The body of water assessed for its susceptibility to degradation in line with the proposed procedure is Myczkowce Reservoir, SE Poland. This reservoir has a maximum capacity of ten million m3 and helps provide hydropower, by serving as a surge tank located above the main Solina Reservoir. On the basis of an assessment of its morphometric and hydrological parameters, Myczkowce Reservoir was assigned to the low-resilience category where risk of degradation was concerned. The primary factors responsible for that are limited capacity in relation to shoreline length, a lack of thermal stratification, and a high value for the Schindler index. These and other environmental parameters provided for Myczkowce’s assignment to the category of susceptible to the impact of matter supplied by its catchment, with this reflecting the instantaneous nature of the basin, high values for the Ohle coefficient, average catchment slope, and the lack of a septic system. The designated risk level supported Myczkowce’s assignment to a category characterised by an “unacceptable” risk of degradation. The proposed method taking two parameters (resilience and susceptibility) into account represents the first universal method for assessing reservoirs without reference to risks such as drought, flooding, or lack of water supply for human consumption. The risk depends only on the reservoir and catchment parameters.
CONFERENCE-ARTICLE 8 Reads 1 Citation Sonochemical formation of hydrogen peroxide Małgorzata Kida, Sabina Książek, Piotr Koszelnik Published: 16 November 2017
Proceedings, doi: 10.3390/ecws-2-04957
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This work detailed in this study utilized 20 kHz ultrasonic irradiation as a mechanism of hydrogen peroxide production. The effects of various operating parameters were investigated, including ultrasonic intensity, solution pH, source of water, initial dibutyl phthalate concentration and the presence of hydrogen peroxide. During the irradiation, the H2O2 concentration arising was monitored. The results indicate that H2O2 is produced by cavitation during ultrasonic irradiation. An increase in ultrasonic intensity increases the amount of hydrogen peroxide produced. The initial pH of the solution does not affect the efficiency of processes substantially. H2O2 is regarded as one of the most effective additives enhancing the sonochemical production of hydroxyl radicals and hydrogen peroxide, but too high a dose is known to exert a negative effect. Above a 0.1 mM dose of H2O2, the amount of H2O2 formed decreased as the concentration of H2O2 increased. Thus, the concentration of hydrogen peroxide plays a crucial role in the extent to which effectiveness of the combined process is enhanced. The negative effect on reactions of the presence of additional components in the reaction solution was also confirmed. It was therefore concluded that experimental evaluation of optimum parameters of hybrid processes is a matter of importance.


Article 1 Read 0 Citations The influence of environmental factors on the carbon dioxide flux across the water–air interface of reservoirs in south-... Renata Gruca-Rokosz, Lilianna Bartoszek, Piotr Koszelnik Published: 01 June 2017
Journal of Environmental Sciences, doi: 10.1016/j.jes.2016.10.011
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Article 1 Read 1 Citation The qualitative and quantitative analysis of the coupled C, N, P and Si retention in complex of water reservoirs Lilianna Bartoszek, Piotr Koszelnik Published: 22 July 2016
SpringerPlus, doi: 10.1186/s40064-016-2836-7
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The Solina–Myczkowce complex of reservoirs (SMCR) accounts about 15 % of the water storage in Poland. On the base of historical (2004–2006 years) data, the mass balance of nitrogen, phosphorus, total organic carbon and dissolved silicon were calculated. Large, natural affluents were the main source of the biogenic compounds in the studied ecosystem, delivering 90 % of TOC, 87 % of TN and 81 % of TP and DSi load. Moreover, results show that SMCR is an important sink for all the analysed biogenic elements. About 15–30 % of external loads were retained in the reservoir mainly in upper Solina. Due to the intensive processes of primary production, inorganic forms of nitrogen and phosphorus were mainly retained. Internal production of organic matter lead to an amount of the organic matter deposited in the sediments greater than was anticipated on the basis of the mass balance calculations. A constant load of dissolved silicon originating only from natural sources did not contribute to supplement deficits of Si present in the body of water in the reservoirs, promoting disturbances in N:C:P:Si ratios and another growth condition for other types of algae. Keywords Water reservoirs Mass balance Biogenic elements
Article 0 Reads 0 Citations POSSIBILITY OF USE OF BOTTOM SEDIMENTS DERIVED FROM THE SAN RIVER Katarzyna Maj, Piotr Koszelnik Published: 01 January 2016
Inżynieria Ekologiczna, doi: 10.12912/23920629/63278
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Inżynieria Ekologiczna, doi: 10.12912/23920629/63261
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