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Artur Mielcarek
University of Warmia and Mazury in Olsztyn, Department of Environment Engineering, Warszawska St. 117a, Olsztyn 10-719, Poland

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Journal article
Published: 01 April 2021 in Science of The Total Environment
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The soilless crop cultivation under cover generates wastewater called soilless cultivation drainage (SCD), being a nutrient-rich overflow. The average concentration of phosphorus- and nitrogen-based pollutants from soilless tomato cultivation usually ranges from 35.4 to 104.0 mg P/L and from 270.0 to 614.9 mg N/L, respectively. In bio-electrochemical reactors, nitrogen and phosphorus are removed via biological denitrification, electrochemical nitrate reduction, bio-electrochemical reduction, and electrocoagulation. The novelty of this study is due to the use of alternating current (AC), which can both mitigate the corrosion on the anode and solve the issue of insoluble oxide build-up on the cathode. Additionally, and crucially, it promotes bacterial growth and activity. The aim of the present study was to determine (1) the effectiveness of soilless cultivation drainage treatment methods that employ biological and electrochemical processes, with consideration given to (2) the quantity and quality of the produced sludge as a potential nutrient-rich product. The bio-electrochemical reactor proved more effective than the electrochemical one and ensured a high TP and TN removal efficiency exceeding 97% and 66%, respectively. The resulting sludge was rich in such elements as calcium, potassium, carbon, phosphorus, and nitrogen, and as such may serve as a viable alternative to conventional mineral fertilizers.

ACS Style

Kamil Łukasz Bryszewski; Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Krzysztof Jóźwiakowski. Investigation on the improved electrochemical and bio-electrochemical treatment processes of soilless cultivation drainage (SCD). Science of The Total Environment 2021, 783, 146846 .

AMA Style

Kamil Łukasz Bryszewski, Joanna Rodziewicz, Artur Mielcarek, Wojciech Janczukowicz, Krzysztof Jóźwiakowski. Investigation on the improved electrochemical and bio-electrochemical treatment processes of soilless cultivation drainage (SCD). Science of The Total Environment. 2021; 783 ():146846.

Chicago/Turabian Style

Kamil Łukasz Bryszewski; Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Krzysztof Jóźwiakowski. 2021. "Investigation on the improved electrochemical and bio-electrochemical treatment processes of soilless cultivation drainage (SCD)." Science of The Total Environment 783, no. : 146846.

Journal article
Published: 15 February 2021 in Applied Sciences
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The present study aimed to determine the kinetics of pollutant removal in biofilters with LECA filling (used as a buffer to prevent de-icing agents from being released into the environment with stormwater runoff). It demonstrated a significant effect of temperature and a C/N ratio on the rate of nitrification, denitrification, and organic compound removal. The nitrification rate was the highest (0.32 mg N/L·h) at 25 °C and C/N = 0.5, whereas the lowest (0.18 mg N/L·h) at 0 °C and C/N = 2.5 and 5.0. Though denitrification rate is mainly affected by the available quantity of organic substrate, it actually decreased as the C/N increased and was positively correlated with the temperature levels. Its value was found to be the highest (0.31 mg N/L·h) at 25 °C and C/N = 0.5, and the lowest (0.18 mg N/L·h) at 0 °C and C/N = 5.0. As the C/N increased, so did the content of organic compounds in the treated effluent. The lowest organic removal rates were noted for C/N = 0.5, ranging between 11.20 and 18.42 mg COD/L·h at 0 and 25 °C, respectively. The highest rates, ranging between 27.83 and 59.43 mg COD/L·h, were recorded for C/N = 0.5 at 0 and 25 °C, respectively.

ACS Style

Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz; Kamila Ostrowska. The Kinetics of Pollutant Removal through Biofiltration from Stormwater Containing Airport De-Icing Agents. Applied Sciences 2021, 11, 1724 .

AMA Style

Artur Mielcarek, Joanna Rodziewicz, Wojciech Janczukowicz, Kamila Ostrowska. The Kinetics of Pollutant Removal through Biofiltration from Stormwater Containing Airport De-Icing Agents. Applied Sciences. 2021; 11 (4):1724.

Chicago/Turabian Style

Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz; Kamila Ostrowska. 2021. "The Kinetics of Pollutant Removal through Biofiltration from Stormwater Containing Airport De-Icing Agents." Applied Sciences 11, no. 4: 1724.

Journal article
Published: 01 October 2020 in Journal of Ecological Engineering
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This study aimed to evaluate operation technology and functioning of facilities for the treatment of municipal sewage in a small wastewater treatment plant operating based on the trickling biofilters technology, in the winter (February) and summer (June-July) periods. Additional analyses were...

ACS Style

Kamil Łukasz Bryszewski; Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz. Effectiveness of Contaminants Removal in the Summer and Winter Season in a Small Sewage Treatment Plant Operating Based on the Trickling Biofilters Technology. Journal of Ecological Engineering 2020, 21, 92 -98.

AMA Style

Kamil Łukasz Bryszewski, Artur Mielcarek, Joanna Rodziewicz, Wojciech Janczukowicz. Effectiveness of Contaminants Removal in the Summer and Winter Season in a Small Sewage Treatment Plant Operating Based on the Trickling Biofilters Technology. Journal of Ecological Engineering. 2020; 21 (7):92-98.

Chicago/Turabian Style

Kamil Łukasz Bryszewski; Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz. 2020. "Effectiveness of Contaminants Removal in the Summer and Winter Season in a Small Sewage Treatment Plant Operating Based on the Trickling Biofilters Technology." Journal of Ecological Engineering 21, no. 7: 92-98.

Journal article
Published: 27 August 2020 in Journal of Environmental Chemical Engineering
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The aim of the study was to supplement the information missing in the literature on the influence of organic compounds speciation (percentage of chemical oxygen demand (COD) fractions, readily biodegradable and non–biodegradable dissolved organic matter; slowly biodegradable and non‒biodegradable insoluble organic matter) in wastewater on chemically assisted primary sedimentation process and its potential impact on the energy and economic balance of the plant. The statistical modelling of the chemically assisted primary sedimentation process using artificial neural networks (ANN) was a novelty. It was also important to check the differences resulting from the use of coagulants, polyelectolites and their doses. For both large wastewater treatment plants (>500,000 people equivalent) located in the various regions of the country in Central Europe only ferric chloride had a positive balance. The addition of polyelectrolyte in the Wroclaw wastewater did not affect the chemically assisted primary sedimentation process but in the Bialystok wastewater it strengthened the process effect. In both plants only doses from 10 to 40 mgFe/dm3 are cost-effective. The results indicate that the addition of polyelectrolyte should be taken into account in this application and was correlated with the amount of colloidal COD fractions in wastewater. The developed ANN models reflected well the effectiveness of COD removal in both large WWTP while the sensitivity analysis of individual ANN models showed differences in the variables affecting the calculation process of both models, despite similar values of parameters characterizing wastewater in both wastewater treatment plants.

ACS Style

Joanna Struk-Sokołowska; Stanisław Miodoński; Mateusz Muszyński-Huhajło; Kamil Janiak; Piotr Ofman; Artur Mielcarek; Joanna Rodziewicz. Impact of differences in speciation of organic compounds in wastewater from large WWTPs on technological parameters, economic efficiency and modelling of chemically assisted primary sedimentation process. Journal of Environmental Chemical Engineering 2020, 8, 104405 .

AMA Style

Joanna Struk-Sokołowska, Stanisław Miodoński, Mateusz Muszyński-Huhajło, Kamil Janiak, Piotr Ofman, Artur Mielcarek, Joanna Rodziewicz. Impact of differences in speciation of organic compounds in wastewater from large WWTPs on technological parameters, economic efficiency and modelling of chemically assisted primary sedimentation process. Journal of Environmental Chemical Engineering. 2020; 8 (5):104405.

Chicago/Turabian Style

Joanna Struk-Sokołowska; Stanisław Miodoński; Mateusz Muszyński-Huhajło; Kamil Janiak; Piotr Ofman; Artur Mielcarek; Joanna Rodziewicz. 2020. "Impact of differences in speciation of organic compounds in wastewater from large WWTPs on technological parameters, economic efficiency and modelling of chemically assisted primary sedimentation process." Journal of Environmental Chemical Engineering 8, no. 5: 104405.

Journal article
Published: 29 April 2020 in Sustainability
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Large volumes of pavement de-icing and anti-icing fluids, collectively termed de-icing agents, are used at airports to facilitate wintertime safe air travel. After use, most of the them get typically mixed with storm water runoff and may enter soil and waters near the airports. Wastewater resulting from airports’ winter operations is contaminated mainly with nitrogen and carbon compounds. Previous research results have shown that the use of biofilters filled with lightweight aggregates prepared from fly ash from sewage sludge thermal treatment (FASST LWA) could be an effective method for removing nitrogen and organic compounds at low temperatures, i.e., 0–8 °C. For this to be possible, it is necessary to maintain a proper ratio between the amounts of carbon and nitrogen in the treated wastewater, through the simultaneous application of de-icing agents containing urea and carbon compounds. Biofilter technology is part of the concept of sustainable development. Their filling is made of waste materials and one of the pollutants (organic compounds) present in the wastewater is used to remove other pollutants (nitrogen compounds). In this study, technological systems for the treatment of wastewater containing airport runway de-icing agents with biofilters were proposed, which allow for the treated wastewater to be discharged into natural waters, soil, and sewerage network.

ACS Style

Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Kamil Bryszewski; Kamila Ostrowska. Treatment of Wastewater Containing Runway De-Icing Agents in Biofilters as a Part of Airport Environment Management System. Sustainability 2020, 12, 3608 .

AMA Style

Joanna Rodziewicz, Artur Mielcarek, Wojciech Janczukowicz, Kamil Bryszewski, Kamila Ostrowska. Treatment of Wastewater Containing Runway De-Icing Agents in Biofilters as a Part of Airport Environment Management System. Sustainability. 2020; 12 (9):3608.

Chicago/Turabian Style

Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Kamil Bryszewski; Kamila Ostrowska. 2020. "Treatment of Wastewater Containing Runway De-Icing Agents in Biofilters as a Part of Airport Environment Management System." Sustainability 12, no. 9: 3608.

Journal article
Published: 25 February 2020 in Separation and Purification Technology
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The hydraulic loading of biofilter (HL), temperature and C/N ratio - these factors influence on nitrogen and carbon removal efficiency from airport wastewater containing de-icing agents. The vast area of airports and significant fluctuations in atmospheric precipitation contribute to huge differences in wastewater flows discharged to treatment systems. The aim of the study was to determine the influence of the hydraulic loading on nitrogen and organic compounds removal in biofilters in low temperatures. The novelty of the paper results from low temperatures (0, 4 and 8 °C), specific wastewater and biofilter filling (light weight aggregates prepared from fly ashes from sewage sludge thermal treatment (FASST LWA). The study was divided into four series differing in the hydraulic loading (1.0, 3.0, 5.0, and 10.0 L·m−2·d−1). In each series, biofilters (filled with FASST LWA) were operated at the temperature of 0, 4, 8 °C and 25 °C. The organic carbon to nitrogen ratio was 0.5. The study showed the effective removal of nitrogen at low temperatures, even at high HL. The highest efficiency of nitrogen removal at the temperature of 0 °C (34.93 ± 4.54%) was obtained at 5.0 L·m−2·d−1. The hydraulic loading and temperature affected the efficiency of nitrogen and COD removal. The presented experiment demonstrated that the use of biofilters filled with FASST LWA may offer an effective and sustainable method for the treatment of airport de-icing wastewater.

ACS Style

Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Kamila Ostrowska; Krzysztof Jóźwiakowski; Piotr Bugajski; Andrzej Jucherski. Biofilter with innovative filling for low-temperature treatment of sewage from de-icing airport runways. Separation and Purification Technology 2020, 242, 116761 .

AMA Style

Joanna Rodziewicz, Artur Mielcarek, Wojciech Janczukowicz, Kamila Ostrowska, Krzysztof Jóźwiakowski, Piotr Bugajski, Andrzej Jucherski. Biofilter with innovative filling for low-temperature treatment of sewage from de-icing airport runways. Separation and Purification Technology. 2020; 242 ():116761.

Chicago/Turabian Style

Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Kamila Ostrowska; Krzysztof Jóźwiakowski; Piotr Bugajski; Andrzej Jucherski. 2020. "Biofilter with innovative filling for low-temperature treatment of sewage from de-icing airport runways." Separation and Purification Technology 242, no. : 116761.

Journal article
Published: 19 February 2020 in Science of The Total Environment
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Wastewater from households wastewater treatment plants (HWWTP) is discharged to the ground or to the surface waters. Special consideration should be given to the improvement of HWWTP effectiveness, particularly in relation to nutrients. The addition of biodegradable carbon sources to biofilm reactor, can enhance microbial activity but may also lead to filling clogging. The study aimed to compare 3 different organic substrates: acetic acid (commonly applied)and two untypical - citric acid and waste beer, under the same operational conditions in a post-denitrification biofilm reactor. The study investigated the impact of a type of organic substrate, low pH and time on: (1) biofilm growth, (2) the characteristics of extracellular polymeric substances (EPS), (3) the kinetics of nutrients removal and (4) reactor clogging. Results were referred to (5) the effectiveness of nutrients removal. The study demonstrated that low pH assured the development of a thinbiofilm. Citric acid ensured the lowest biomass volume, being by 53% lower than in the reactor with acetic acid and by as much as 61% lower than in the reactor with waste beer. The soluble EPS fraction prevailed in the total EPS in all reactors. The content of the tightly bound EPS fraction ranged from 26.93% (citric acid) to 36.32% (waste beer). Investigations showed also a high ratio of exoproteins to polysaccharide in all fractions, which indicated a significant role of proteins in developing a highly-proliferating biofilm. The treated wastewater met requirements of Polish regulations concerning COD and nitrogen concentrations.

ACS Style

Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz; Joanna Struk-Sokołowska. The impact of biodegradable carbon sources on nutrients removal in post-denitrification biofilm reactors. Science of The Total Environment 2020, 720, 137377 .

AMA Style

Artur Mielcarek, Joanna Rodziewicz, Wojciech Janczukowicz, Joanna Struk-Sokołowska. The impact of biodegradable carbon sources on nutrients removal in post-denitrification biofilm reactors. Science of The Total Environment. 2020; 720 ():137377.

Chicago/Turabian Style

Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz; Joanna Struk-Sokołowska. 2020. "The impact of biodegradable carbon sources on nutrients removal in post-denitrification biofilm reactors." Science of The Total Environment 720, no. : 137377.

Journal article
Published: 12 January 2020 in Water
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The study was conducted in a one-stage rotating electrobiological disk contactor (REBDC) and a rotating electrochemical disk contactor (RECDC). Synthetic wastewater with characteristics similar to the wastewater from soil-less cultivation of tomatoes was used in the experiment. Current efficiency (CE) values, that express the denitrification performance of bio- and electrochemical reactors, were higher in the electrobiological contactor than in the electrochemical one. Combining biological processes with electrochemical processes in the electrobiological contactor resulted in almost 20% higher current efficiency in the contactor operated at a density of 0.63 A/m2 and hydraulic retention time (HRT) = 4 h. The study showed that, in both the electrochemical and the electrobiological contactor, current density increase and hydraulic retention time extension increased electric power consumption (E) during phosphorus compounds removal and simultaneously lowered current efficiency.

ACS Style

Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Kamil Bryszewski. Electric Power Consumption and Current Efficiency of Electrochemical and Electrobiological Rotating Disk Contactors Removing Nutrients from Wastewater Generated in Soil-Less Plant Cultivation Systems. Water 2020, 12, 213 .

AMA Style

Joanna Rodziewicz, Artur Mielcarek, Wojciech Janczukowicz, Kamil Bryszewski. Electric Power Consumption and Current Efficiency of Electrochemical and Electrobiological Rotating Disk Contactors Removing Nutrients from Wastewater Generated in Soil-Less Plant Cultivation Systems. Water. 2020; 12 (1):213.

Chicago/Turabian Style

Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Kamil Bryszewski. 2020. "Electric Power Consumption and Current Efficiency of Electrochemical and Electrobiological Rotating Disk Contactors Removing Nutrients from Wastewater Generated in Soil-Less Plant Cultivation Systems." Water 12, no. 1: 213.

Journal article
Published: 01 December 2019 in Arabian Journal of Chemistry
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This manuscript presents results of a study on sorption effectiveness of orthophosphate and nitrate III and V in an equimolar mixture of P–PO4, N–NO2 and N–NO3 using chitosan in the form of hydrogel beads. Analyses were carried out for: the effect of pH on sorption intensity of orthophosphate and of nitrate III and V onto chitosan, sorption kinetics onto chitosan, and the maximum sorption capacity of P–PO4, N–NO2 and N–NO3 by chitosan in a mixture. The most effective sorption of P–PO4, N–NO2 and N–NO3 was observed at pH 4. In turn, at pH 6–11 the sorption of orthophosphate and nitrate onto chitosan proved ineffective. P–PO4, N–NO2 and N–NO3 sorption kinetics was best described by the pseudo-second order model. The model of intraparticle diffusion fitting to experimental data demonstrated that the process of orthophosphate and nitrate sorption onto chitosan proceeded in 2 phases, i.e. 1 – adsorption and 2 – absorption. A phenomenon of the partial release of P–PO4, N–NO2 and N–NO3 after a specified period of time was observed in the study, which was due to a change in solution pH induced by the sorbent. The period after which desorption occurred was 120 min in the case of phosphates and 60 min in the case of nitrates III and V. The quantity of bound sorbate (a mixture of orthophosphate and nitrate) was the highest in the 60th minute of sorption. The study demonstrated evident competition between H2PO4−, NO2− and NO3− ions. The affinity of orthophosphate and nitrate to the sorption centers of chitosan could be ordered as follows: P–PO4 > N–NO2 > N–NO3. Sorption equilibrium isotherms were best described by a heterogeneous Langmuir’s model. In the equimolar mixture of P–PO4, N–NO2 and N–NO3, the sorption capacity of 1 g of chitosan reached 0.507 mmol H2PO4−/g, 0.373 mmol NO2−/g and 0.350 mmol NO3−/g, which means a total of 1.23 mmol nutrients.

ACS Style

Tomasz Jóźwiak; Urszula Filipkowska; Paula Szymczyk; Artur Mielcarek. Sorption of nutrients (orthophosphate, nitrate III and V) in an equimolar mixture of P–PO4, N–NO2 and N–NO3 using chitosan. Arabian Journal of Chemistry 2019, 12, 4104 -4117.

AMA Style

Tomasz Jóźwiak, Urszula Filipkowska, Paula Szymczyk, Artur Mielcarek. Sorption of nutrients (orthophosphate, nitrate III and V) in an equimolar mixture of P–PO4, N–NO2 and N–NO3 using chitosan. Arabian Journal of Chemistry. 2019; 12 (8):4104-4117.

Chicago/Turabian Style

Tomasz Jóźwiak; Urszula Filipkowska; Paula Szymczyk; Artur Mielcarek. 2019. "Sorption of nutrients (orthophosphate, nitrate III and V) in an equimolar mixture of P–PO4, N–NO2 and N–NO3 using chitosan." Arabian Journal of Chemistry 12, no. 8: 4104-4117.

Journal article
Published: 01 December 2019 in Water
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Soilless plantations under cover constitute a significant part of horticulture. This study aimed at determining the qualitative composition of wastewater generated from the soilless cultivation of tomato under cover. This is important for managing the wastewater, which may be recirculated to allow the or employ a partial or complete recovery of minerals. Two plantations located in north-eastern Poland, which differed in the type of substratum (coconut fiber or rockwool), were studied. The generated wastewater was characterized by a low content of organic matter and a high concentration of total nitrogen (TN), total phosphorus (TP), and salinity (EC). Over 99% of the TN was constituted by nitrates. The chemical oxygen demand (COD) changed from 50.07 to 75.82 mgO2·L−1 (greenhouse 1), and from 37.35 to 78.12 mgO2·L−1 (greenhouse 2); the content of TN changed from 403.59 to 614.89 mgN·L−1 (greenhouse 1), and from 270.00 to 577.40 mgN·L−1 (greenhouse 2); that of TP changed from 35.44 to 78.00 mgP·L−1 (greenhouse 1), and from 54.10 to 104.00 mgP·L−1 (greenhouse 2); and the EC changed from 3.53 to 6.93 mS·cm−1 (greenhouse 1), and from 4.94 to 6.94 mS·cm−1 (greenhouse 2). No statistically significant correlations were noted between TN and TP, or between TP and EC.

ACS Style

Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz; Artur Dobrowolski. Analysis of Wastewater Generated in Greenhouse Soilless Tomato Cultivation in Central Europe. Water 2019, 11, 2538 .

AMA Style

Artur Mielcarek, Joanna Rodziewicz, Wojciech Janczukowicz, Artur Dobrowolski. Analysis of Wastewater Generated in Greenhouse Soilless Tomato Cultivation in Central Europe. Water. 2019; 11 (12):2538.

Chicago/Turabian Style

Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz; Artur Dobrowolski. 2019. "Analysis of Wastewater Generated in Greenhouse Soilless Tomato Cultivation in Central Europe." Water 11, no. 12: 2538.

Conference paper
Published: 24 September 2019 in E3S Web of Conferences
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One of the key elements in the operational management of airports is effective de-icing of surfaces. The run-off of precipitation water loaded with pollutants from de-icing is a considerable and costly problem. The aim of our research has been to evaluate the applicability of biofilters filled with light expanded clay aggregate (LECA) generated from incineration of sewage sludge and now serving as a matrix for the development of microorganisms. The tested biofilters treated precipitation water polluted with agents used to de-ice airports. The solution was tested on a laboratory scale, in a range of temperatures from 0 to 25°C, and at concentrations of pollutants from airport de-icing expressed as COD and varying from 503.30 to 3827.50 mg O2·L-1. The tested filling allowed nitrifying as well as denitrifying bacteria to grow and develop even at low temperatures. Biofilters provide simultaneous nitrification and denitrification, as well as removal of organic compounds, even at 0°C. Biofilters based on the granulate prepared from fly ash from sewage sludge thermal treatment can be a cost-efficient and low-maintenance technology to treat airport surface runoff.

ACS Style

Artur Mielcarek; Kamila Ostrowska; Joanna Rodziewicz; Wojciech Janczukowicz; Joanna Struk-Sokolowska. Influence of temperature and C/N ratio on nitrifying and denitrifying bacteria of biofilters treating wastewater from de-icing airport runways. E3S Web of Conferences 2019, 116, 00050 .

AMA Style

Artur Mielcarek, Kamila Ostrowska, Joanna Rodziewicz, Wojciech Janczukowicz, Joanna Struk-Sokolowska. Influence of temperature and C/N ratio on nitrifying and denitrifying bacteria of biofilters treating wastewater from de-icing airport runways. E3S Web of Conferences. 2019; 116 ():00050.

Chicago/Turabian Style

Artur Mielcarek; Kamila Ostrowska; Joanna Rodziewicz; Wojciech Janczukowicz; Joanna Struk-Sokolowska. 2019. "Influence of temperature and C/N ratio on nitrifying and denitrifying bacteria of biofilters treating wastewater from de-icing airport runways." E3S Web of Conferences 116, no. : 00050.

Journal article
Published: 19 May 2019 in Science of The Total Environment
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There is a growing global environmental problem of agricultural wastewater from soilless plant cultivation systems. In most countries dominate open fertilization systems, in which excess of nutrient solution is discharged in an uncontrolled way into the ground inside greenhouses or adjacent areas. Wastewater from such systems is characterized by a very high concentration of nitrogen and phosphorus compounds and their discharge into the environment causes significant pollution of the water and soil environment. The goal of the research was to determine the contribution of electrochemical reduction of nitrogen, hydrogenotrophic and heterotrophic denitrification in the process of nitrogen removal in a rotating electrobiological contactor (REBC) depending on hydraulic retention time (HRT) and electric current density (J). Synthetic sewage with characteristics corresponding to wastewater from soilless cultivation of tomatoes was the subject of the research. The first part of the experiment included determination of the effect of HRT on the effectiveness of bio-processes of nutrients removal in a rotating biological contactor (RBC). The second concerned the effect of HRT and J on the effectiveness of nutrients removal in a rotating electrochemical contactor (RECC), while the third part - the effect of HRT and J on the effectiveness of nutrients removal in REBC. RBC was characterized by low efficiency of denitrification (6.2 to 9.2%). The effectiveness of nitrogen removal in RECC was determined by both electric current density and hydraulic retention time. The highest efficiency was 53.4%. REBC nitrogen removal effectiveness was higher than in RBC and in RECC. The nitrogen removal efficiency increased along with increasing values of HRT, reaching the maximum value of 68.6% for J = 10.0 A/m2 and HRT = 24 h. The contribution of hydrogenotrophic denitrification in total nitrogen removal increased with the increase of electric current density.

ACS Style

Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Tomasz Jóźwiak; Joanna Struk – Sokołowska; Kamil Bryszewski. The share of electrochemical reduction, hydrogenotrophic and heterotrophic denitrification in nitrogen removal in rotating electrobiological contactor (REBC) treating wastewater from soilless cultivation systems. Science of The Total Environment 2019, 683, 21 -28.

AMA Style

Joanna Rodziewicz, Artur Mielcarek, Wojciech Janczukowicz, Tomasz Jóźwiak, Joanna Struk – Sokołowska, Kamil Bryszewski. The share of electrochemical reduction, hydrogenotrophic and heterotrophic denitrification in nitrogen removal in rotating electrobiological contactor (REBC) treating wastewater from soilless cultivation systems. Science of The Total Environment. 2019; 683 ():21-28.

Chicago/Turabian Style

Joanna Rodziewicz; Artur Mielcarek; Wojciech Janczukowicz; Tomasz Jóźwiak; Joanna Struk – Sokołowska; Kamil Bryszewski. 2019. "The share of electrochemical reduction, hydrogenotrophic and heterotrophic denitrification in nitrogen removal in rotating electrobiological contactor (REBC) treating wastewater from soilless cultivation systems." Science of The Total Environment 683, no. : 21-28.

Journal article
Published: 26 March 2019 in Water
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The basic factors determining the efficiency of the removal of nitrogen and carbon compounds from airport wastewater containing de-icing agents are low temperature and the C/N ratio (carbon to nitrogen ratio). Biofilm reactors (biofilters) create better conditions for nitrification and denitrification than suspended biomass reactors. The scope of the study included determination of the influence of the C/N ratio in the wastewater on nitrification, denitrification and organic compound removal in biofilm reactors depending on the temperature. The experiment was performed in 24 circular laboratory biofilters with LECA (Light Expanded Clay Aggregates) filling. The study was divided into three series differing in organic carbon loading. In each series, carried out at the same hydraulic retention time, biofilters were operated at 25, 8, 4 or 0 °C. The study showed the effective removal of nitrogen compounds across a very wide temperature range. The applied filling and properly selected operating parameters of the reactors resulted in effective simultaneous nitrification and denitrification. The highest efficiency of nitrogen removal at 0 °C (34.57 ± 4.54%) was obtained at the C/N ratio of 0.5 gC/gN. The efficiency of denitrification (the lowest at the temperature of 0 °C) increased as the temperature and C/N ratio increased in the wastewater.

ACS Style

Joanna Rodziewicz; Kamila Ostrowska; Wojciech Janczukowicz; Artur Mielcarek. Effectiveness of Nitrification and Denitrification Processes in Biofilters Treating Wastewater from De-Icing Airport Runways. Water 2019, 11, 630 .

AMA Style

Joanna Rodziewicz, Kamila Ostrowska, Wojciech Janczukowicz, Artur Mielcarek. Effectiveness of Nitrification and Denitrification Processes in Biofilters Treating Wastewater from De-Icing Airport Runways. Water. 2019; 11 (3):630.

Chicago/Turabian Style

Joanna Rodziewicz; Kamila Ostrowska; Wojciech Janczukowicz; Artur Mielcarek. 2019. "Effectiveness of Nitrification and Denitrification Processes in Biofilters Treating Wastewater from De-Icing Airport Runways." Water 11, no. 3: 630.

Journal article
Published: 10 September 2018 in Progress on Chemistry and Application of Chitin and its Derivatives
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The influence of the degree of deacetylation of chitosan from the range of DD = 75–90% on the effectiveness of sorption of nitrates from aqueous solutions was investigated. The scope of the research included: determining the effect of pH on the effectiveness of N-NO3 binding on chitosan sorbents and determining the sorption capacity of chitosan sorbents with different degrees of deacetylation after 5, 15, 30 and 60 minutes. The effectiveness of sorption of nitrates on chitosan sorbents increased in the series DD=75% < DD=85% < DD=90%. Regardless of the degree of deacetylation, the sorption effectiveness of nitrates on chitosan was the highest at pH 4. The amount of nitrate-related sorbents was the highest after 30 min of sorption. A process time which was too long resulted in desorption of nitrates. The maximum sorption capacity for chitosan with the degree of deacetylation DD = 75, 85 and 90% was 0.59 mg N-NO3/g, 0.60 mg N-NO3/g and 0.87 mg N-NO3/g, respectively.

ACS Style

Tomasz Jóźwiak; Urszula Filipkowska; Paula Bugajska; Małgorzata Kuczajowska-Zadrożna; Artur Mielcarek. THE INFLUENCE OF THE DEACETYLATION DEGREE OF CHITOSAN IN THE FORM OF FLAKES ON THE EFFECTIVENESS OF NITRATES V SORPTION FROM AQUEOUS SOLUTIONS. Progress on Chemistry and Application of Chitin and its Derivatives 2018, XXIII, 88 -96.

AMA Style

Tomasz Jóźwiak, Urszula Filipkowska, Paula Bugajska, Małgorzata Kuczajowska-Zadrożna, Artur Mielcarek. THE INFLUENCE OF THE DEACETYLATION DEGREE OF CHITOSAN IN THE FORM OF FLAKES ON THE EFFECTIVENESS OF NITRATES V SORPTION FROM AQUEOUS SOLUTIONS. Progress on Chemistry and Application of Chitin and its Derivatives. 2018; XXIII ():88-96.

Chicago/Turabian Style

Tomasz Jóźwiak; Urszula Filipkowska; Paula Bugajska; Małgorzata Kuczajowska-Zadrożna; Artur Mielcarek. 2018. "THE INFLUENCE OF THE DEACETYLATION DEGREE OF CHITOSAN IN THE FORM OF FLAKES ON THE EFFECTIVENESS OF NITRATES V SORPTION FROM AQUEOUS SOLUTIONS." Progress on Chemistry and Application of Chitin and its Derivatives XXIII, no. : 88-96.

Journal article
Published: 01 July 2018 in Journal of Ecological Engineering
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Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz; Kamil Bryszewski. Effect of Acetic Acid on Denitrification and Dephosphatation Process Efficiencies in Sequencing Batch Biofilm Reactor. Journal of Ecological Engineering 2018, 19, 176 -180.

AMA Style

Artur Mielcarek, Joanna Rodziewicz, Wojciech Janczukowicz, Kamil Bryszewski. Effect of Acetic Acid on Denitrification and Dephosphatation Process Efficiencies in Sequencing Batch Biofilm Reactor. Journal of Ecological Engineering. 2018; 19 (4):176-180.

Chicago/Turabian Style

Artur Mielcarek; Joanna Rodziewicz; Wojciech Janczukowicz; Kamil Bryszewski. 2018. "Effect of Acetic Acid on Denitrification and Dephosphatation Process Efficiencies in Sequencing Batch Biofilm Reactor." Journal of Ecological Engineering 19, no. 4: 176-180.

Research article
Published: 26 April 2018 in Environmental Science and Pollution Research
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In this study, we determined the effectiveness of removal of nutrients (nitrates and orthophosphates) from greenhouse wastewaters (GW) using non-cross-linked chitosan (CHs) and chitosan cross-linked with epichlorohydrin (CHs-ECH) in the form of hydrogel beads. GW used in the study had the following parameters: N-NO3 621.1 mg/L, P-PO4 60.8 mg/L, SO42− 605.0 mg/L, Cl− 0.9 mg/L, Ca2+ 545.0 mg/L, Mg2+ 178.0 mg/L, K+ 482.0 mg/L, hardness 113° dH, and pH 6.2. The scope of the study included determination of the effect of pH on wastewater composition and effectiveness of nutrient sorption, analyses of nutrient sorption kinetics, and analyses of the effect of sorbent dose on percentage removal of nutrients from GW. CHs-ECH was able to sorb 79.4% of P-PO4 and 76.7% of N-NO3 from GW, whereas CHs to remove 92.8% of P-PO4 and 53.2% of N-NO3.

ACS Style

Tomasz Jóźwiak; Artur Mielcarek; Wojciech Janczukowicz; Joanna Rodziewicz; Joanna Majkowska-Gadomska; Magdalena Chojnowska. Hydrogel chitosan sorbent application for nutrient removal from soilless plant cultivation wastewater. Environmental Science and Pollution Research 2018, 25, 18484 -18497.

AMA Style

Tomasz Jóźwiak, Artur Mielcarek, Wojciech Janczukowicz, Joanna Rodziewicz, Joanna Majkowska-Gadomska, Magdalena Chojnowska. Hydrogel chitosan sorbent application for nutrient removal from soilless plant cultivation wastewater. Environmental Science and Pollution Research. 2018; 25 (19):18484-18497.

Chicago/Turabian Style

Tomasz Jóźwiak; Artur Mielcarek; Wojciech Janczukowicz; Joanna Rodziewicz; Joanna Majkowska-Gadomska; Magdalena Chojnowska. 2018. "Hydrogel chitosan sorbent application for nutrient removal from soilless plant cultivation wastewater." Environmental Science and Pollution Research 25, no. 19: 18484-18497.

Journal article
Published: 28 February 2018 in Water Science and Technology
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The annual global production of milk is approximately 630,000 million litres and the volume of generated dairy wastewater accounts for 3.2 m3·m−3 product. Dairy wastewater is characterized by a high load of chemical oxygen demand (COD). In many wastewater plants dairy wastewater and municipal wastewater are co-treated. The effect of dairy wastewater contribution on COD fraction changes in municipal sewage which has been treated with a sequencing batch reactor (SBR) in three wastewater treatment plants in north-east Poland is presented. In these plants the real contribution of dairy wastewater was 10, 13 and 17%. In raw wastewater, SS fraction (readily biodegradable dissolved organic matter) was dominant and ranged from 38.3 to 62.6%. In the effluent, SS fraction was not noted, which is indicative of consumption by microorganisms. The presence of dairy wastewater in municipal sewage does not cause changes in the content of the XI fraction (insoluble fractions of non-biodegradable organic matter). SBR effluents were dominated by non-biodegradable dissolved organic matter SI, which from 57.7 to 61.7%. In raw wastewater SI ranged from 1.0 to 4.6%. Xs fraction (slowly biodegradable non-soluble organic matter) in raw wastewater ranged from 24.6 to 45.5% while in treated wastewater it ranged from 28.6 to 30.8%. In the control object (fourth wastewater plant) which does not process dairy wastewater, the SS, SI, Xs and XI fraction in inflow was 28.7, 2.4, 51.7 and 17.2% respectively. In the effluent the SS, SI, Xs and XI fraction was below 0.1, 33.6, 50.0 and 16.4% respectively.

ACS Style

Joanna Struk-Sokolowska; Joanna Rodziewicz; Artur Mielcarek. Effect of dairy wastewater on changes in COD fractions in technical-scale SBR type reactors. Water Science and Technology 2018, 2017, 156 -169.

AMA Style

Joanna Struk-Sokolowska, Joanna Rodziewicz, Artur Mielcarek. Effect of dairy wastewater on changes in COD fractions in technical-scale SBR type reactors. Water Science and Technology. 2018; 2017 (1):156-169.

Chicago/Turabian Style

Joanna Struk-Sokolowska; Joanna Rodziewicz; Artur Mielcarek. 2018. "Effect of dairy wastewater on changes in COD fractions in technical-scale SBR type reactors." Water Science and Technology 2017, no. 1: 156-169.

Journal article
Published: 01 January 2018 in Desalination and Water Treatment
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Joanna Struk-Sokolowska; Artur Mielcarek; Józefa Wiater; Joanna Rodziewicz. Impacts of dairy wastewater and pre-aeration on the performance of SBR treating municipal sewage. Desalination and Water Treatment 2018, 105, 41 -50.

AMA Style

Joanna Struk-Sokolowska, Artur Mielcarek, Józefa Wiater, Joanna Rodziewicz. Impacts of dairy wastewater and pre-aeration on the performance of SBR treating municipal sewage. Desalination and Water Treatment. 2018; 105 ():41-50.

Chicago/Turabian Style

Joanna Struk-Sokolowska; Artur Mielcarek; Józefa Wiater; Joanna Rodziewicz. 2018. "Impacts of dairy wastewater and pre-aeration on the performance of SBR treating municipal sewage." Desalination and Water Treatment 105, no. : 41-50.

Journal article
Published: 01 November 2017 in International Journal of Biological Macromolecules
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A hydrogel chitosan sorbent ionically cross-linked with sodium citrate and covalently cross-linked with epichlorohydrin was used to remove nutrients from an equimolar mixture of P-PO4, N-NO2 and N-NO3. The scope of the study included, among other things, determination of the influence of pH on nutrient sorption effectiveness, nutrient sorption kinetics as well as determination of the maximum sorption capacity of cross-linked chitosan sorbents regarding P-PO4 (H2PO4(-), HPO4(2-)), N-NO2 (HNO2, NO2(-)), and N-NO3 (NO3(-)). The effect of the type of the cross-linking agent on the affinity of the modified chitosan to each nutrient was studied as well. The kinetics of nutrient sorption on the tested chitosan sorbents was best described with the pseudo-second order model. The model of intramolecular diffusion showed that P-PO4, N-NO2 and N-NO3 sorption on cross-linked hydrogel chitosan beads proceeded in two phases. The best sorbent of nutrients turned out to be chitosan cross-linked covalently with epichlorohydrin; with P-PO4, N-NO2 and N-NO3 sorption capacity reaching: 1.23, 0.94 and 0.76mmol/g, respectively (total of 2.92mmol/g). For comparison, the sorption capacity of chitosan cross-linked ionically with sodium citrate was: 0.43, 0.39 and 0.39mmol/g for P-PO4, N-NO2 and N-NO3, respectively (total of 1.21mmol/g).

ACS Style

Tomasz Jóźwiak; Urszula Filipkowska; Paula Szymczyk; Małgorzata Kuczajowska-Zadrożna; Artur Mielcarek. The use of cross-linked chitosan beads for nutrients (nitrate and orthophosphate) removal from a mixture of P-PO4, N-NO2 and N-NO3. International Journal of Biological Macromolecules 2017, 104, 1280 -1293.

AMA Style

Tomasz Jóźwiak, Urszula Filipkowska, Paula Szymczyk, Małgorzata Kuczajowska-Zadrożna, Artur Mielcarek. The use of cross-linked chitosan beads for nutrients (nitrate and orthophosphate) removal from a mixture of P-PO4, N-NO2 and N-NO3. International Journal of Biological Macromolecules. 2017; 104 ():1280-1293.

Chicago/Turabian Style

Tomasz Jóźwiak; Urszula Filipkowska; Paula Szymczyk; Małgorzata Kuczajowska-Zadrożna; Artur Mielcarek. 2017. "The use of cross-linked chitosan beads for nutrients (nitrate and orthophosphate) removal from a mixture of P-PO4, N-NO2 and N-NO3." International Journal of Biological Macromolecules 104, no. : 1280-1293.

Journal article
Published: 30 September 2017 in Progress on Chemistry and Application of Chitin and its Derivatives
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Tomasz Jóźwiak; University of Warmia and Mazury in Olsztyn; Urszula Filipkowska; Paula Szymczyk; Małgorzata Kuczajowska-Zadrożna; Artur Mielcarek. REMOVAL OF DYES FROM AQUEOUS SOLUTIONS BY GLAUCONITE IMMOBILISED ON CHITOSAN HYDROGEL BEADS. Progress on Chemistry and Application of Chitin and its Derivatives 2017, XXII, 54 -65.

AMA Style

Tomasz Jóźwiak, University of Warmia and Mazury in Olsztyn, Urszula Filipkowska, Paula Szymczyk, Małgorzata Kuczajowska-Zadrożna, Artur Mielcarek. REMOVAL OF DYES FROM AQUEOUS SOLUTIONS BY GLAUCONITE IMMOBILISED ON CHITOSAN HYDROGEL BEADS. Progress on Chemistry and Application of Chitin and its Derivatives. 2017; XXII ():54-65.

Chicago/Turabian Style

Tomasz Jóźwiak; University of Warmia and Mazury in Olsztyn; Urszula Filipkowska; Paula Szymczyk; Małgorzata Kuczajowska-Zadrożna; Artur Mielcarek. 2017. "REMOVAL OF DYES FROM AQUEOUS SOLUTIONS BY GLAUCONITE IMMOBILISED ON CHITOSAN HYDROGEL BEADS." Progress on Chemistry and Application of Chitin and its Derivatives XXII, no. : 54-65.