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Wyniki wyszukiwania dla: PHOSPHOLIPIDS REMOVAL
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Efficiency of pollutant removal by five multistage constructed wetlands in a temperate climate
PublikacjaIn recent years, an increase in interest in hybrid constructed wetland systems (HCWs) has beenobserved. These systems are composed of two or more filters with different modes of sewage flow.Based on over eight years of monitoring, carried out at five local HCWs located in the PomeraniaRegion of Northern Poland, the effective removal of organic matter (from 74.9 to 95.5% COD) in theloading range 1.5-17.0 g COD·m-2·d-1 was confirmed....
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Vibrational Sum-Frequency Generation Activity of a 2,4-Dinitrophenyl Phospholipid Hybrid Bilayer: Retrieving Orientational Parameters from a DFT Analysis of Experimental Data
PublikacjaThe vibrational nonlinear activity of films of 2,4-dinitrophenyl phospholipid (DNP) at the solid interface is measured by sum-frequency generation spectroscopy (SFG). Hybrid bilayers are formed by a LangmuirSchaefer approach in which the lipid layer is physisorbed on top of a self-assembled monolayer of dodecanethiol on Pt with the polar heads pointing out from the surface. The SFG response is investigated in two vibrational frequency...
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The solubilization of hydrocarbon mixtures as one of the mechanisms of hydrophobic pollutants removal from soil
PublikacjaBadano solubilizację mieszanin węglowodorów alifatycznych (dekanu, dodekanu, tetradekanu, heksadekanu) i aromatycznych (toluenu, o-xylenu) w roztworach micelarnych surfaktantów niejonowych - oksyetylenowanego alkoholu (Rokanol NL6) i alkilopoliglukozydów (Triton BG10, AG 6210). Najwyższą efektywność solubilizacji uzyskano dla Rokanolu NL6. Efektywność solubilizacji mieszaniny zależała od rozpuszczalności poszczególnych jej składników...
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Removal of organic compounds from water by solvent sublation. Criteria for solvent selection.
PublikacjaProces flotoekstrakcji zastosowano do usuwania z wody następujących związków organicznych: tetrachlorku węgla, chloroformu, 1,3,5-trimetylobenzenu (mezytylenu), fenolu i 2,4,5-trichlorofenolu. Jako odbierające fazy organiczne użyto: olej mineralny, 1-dekanol, 1-oktanol, octan amylu, dodekan i tetradekan. Mechanizmem decydującym o usuwaniu lotnych związków organicznych (VOC) było odparowanie do wnętrza pęcherzyków gazu, podczas...
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An activation-free route to porous magnetic carbon adsorbents for the removal of phenolic compounds
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Dependence between quality and removal effectiveness of organic matter in hybrid constructed wetlands
PublikacjaW procesie oczyszczania ścieków w Vertical Flow Constructed Wetland (VF-CW) jednym z czynników jest dopływ tlenu. Niewystarczający dopływ tlenu do złoża może być przyczyną braku efektywności usuwania zanieczyszczeń, a więc wskazywać na niewłaściwą eksploatację obiektu.Obiekty badań stanowiły złoża pionowe stanowiące jeden z elementów biologicznego oczyszczania dwóch hybrydowych systemów hydrofitowych zlokalizowanych w Wieszynie...
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Advanced oxidation processes for recalcitrant compounds removal comparison with biofiltration by Corbicula fluminea
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A sumanene-containing magnetic nanoadsorbent for the removal of caesium salts from aqueous solutions
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Influence of COD-fractions on removal effectiveness and accumulation of organic matter in constructed wetlands
PublikacjaW pracy wykazano, że efektywność usuwania substancji organicznej doprowadzanej w ściekach bytowo-gospodarczych do złóż hydrofitowych zależy od rodzaju frakcji substancji organicznej oraz ich stężeń. Na podstawie analizy poszczególnych frakcji ChZT (rozpuszczonych związków organicznych biologicznie łatwo- i nierozkładalnych oraz zawiesin organicznych biologicznie wolno- i nierozkładalnych) wykazano, że na akumulację substancji organicznej...
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Removal efficiency of phenol by ozonation process with calcium peroxide from aqueous solutions
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The effectiveness of organic matter removal in unit processes of the technological groundwater treatment system
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Oil removal from polluted soil by washing with surfactants solutions in dynamic conditions
PublikacjaFor washing of the oil from polluted soil surfactants solutions were applied. In a research a nonionic synthetic surfactant - polyoxyethylene ether of synthetic fatty alcohol (Rokanol NL6), rhamnolipid biosurfactant JBR 425 (Jeneil Biosurfactant Co. LLC) and their mixtures were used. Results of oil removal from peat soil and sand with mixtures of surfactants solutions at concentration 0,5 g/dm...
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Impact of influent wastewater quality on nitrogen removal rates in multistage treatment wetlands
PublikacjaNitrogen removal in treatment wetlands is influenced by many factors, and the presence of electron donors (biodegradable organic matter) and electron acceptors (nitrate ions) is the main limiting one; for obtaining these conditions, multistage treatment wetlands (MTWs) are required, where an extensive nitrification can be obtained in the first stages under aerobic conditions leaving then to the following anoxic/anaerobic stages...
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The role of particulate and colloidal substrate in biological nutrient removal activated sludge systems
PublikacjaThe authors investigated COD fractionation according to the physical state (soluble/colloidal/particulate) in four wastewater treatment plants (WWTPs) in northern Poland. It was found that particulate and colloidal organic compounds constituted up to 70% of total COD. On the other hand, according to literature data, municipal wastewater contains readily and slowly biodegradable substrates in the amount of approximately 10-30% and...
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Removal of metal particles from carbon nanotubes using conventional and microwave methods
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Removal efficiency of phenol by ozonation process with calcium peroxide from aqueous solutions
PublikacjaPhenol has been introduced as a priority pollutant by the US Environmental Protection Agency. Advanced oxidation processes (AOPs) are one of the most efcient methods for removal of non-degradable organic pollutants in aqueous solutions. The removal efciencies of phenol and COD under optimal conditions pH=3, phenol concentration=5 mg/L, CaO2 concentration=0.025 mg/L, temperature 25 °C, 1 g/min ozonation rate and contact time=90...
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Use of pyridinium and pyrrolidinium ionic liquids for removal of toluene from gas streams
PublikacjaSeparation of toluene from a toluene/N2 gas mixture using supported liquid membranes based on a series of pyridinium (1-butylpyridinium- bis(trifluoromethylsulfonyl)imide - [C4Py][Tf2N], 1-hexylpyridinium trifluoromethanesulfone [C6Py][Tf2N]) and pyrrolidinium (1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide - [C4Pyrr][Tf2N], 1-hexyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide - [C6Pyrr][Tf2N], 1-butyl-1-methylpyrrolidinium...
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Kinetics of pollutants removal in vertical and horizontal flow constructed wetlands in temperate climate
PublikacjaThis paper reports a comparative study on kinetics of organic matter expressed as BOD5 and nitrogen removal in constructed wetlands operated in Poland. Analyzed data were collected at eight wetland systems, composed of subsurface flow beds: horizontal flow (HF) and vertical flow (VF), in different number and sequences. The analysis involved particularly mass removal rates (MRR) and first-order removal rate coefficients of BOD5...
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Application of mechanistic and data-driven models for nitrogen removal in wastewater treatment systems
PublikacjaIn this dissertation, the application of mechanistic and data-driven models in nitrogen removal systems including nitrification and deammonification processes was evaluated. In particular, the influential parameters on the activity of the Nitrospira activity were assessed using response surface methodology (RSM). Various long-term biomass washout experiments were operated in two parallel sequencing batch reactor (SBR) with a different...
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Nitrogen monitoring in atmospheric deposition and its removal from municipal and industrial wastewater
PublikacjaBadano zmiany stężenia azotu w opadach atmosferycznych oraz warunki usuwania azotu ze ścieków komunalnych i przemysłowych. Badano wpływ wybranych sulfonamidów na proces nitryfikacji oraz oznaczano ich stopień biodegradacji. Stwierdzono, że sulfonamidy są substancjami, które hamują procesy biologicznego oczyszczania ścieków, jak również w niskim stopniu ulegają biodegradacji.
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Dynamic simulation as a tool for evaluation of the nitrogen removal capabilities at the "Gdańsk-Wschód" WWTP
PublikacjaCelem badań było przedstawienie możliwości zastosowania złożonego modelu biokinetycznych ASM2d do symulacji procesu usuwania azotu w oczyszczalni ścieków ''Wschód'' w Gdańsku. Szybkość procesów nitryfikacji i denitryfikacji została wyznaczona w warunkach laboratoryjnych za pomocą tzw. testów zlewkowych. Wyniki tych badań zostały wykorzystane do kalibracji modelu, w trakcie której zmieniano wartości tylko 5 parametrów kinetycznych....
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Removal of hydrophobic organic pollutants from soil by surfactants and biosurfactants solution flushing
PublikacjaPrzedstawiono wyniki solubilizacji dwóch związków hydrofobowych - tetrachloroetylenu i dodekanu oraz dwóch bazowych olejów mineralnych - SAE 30/95 i PAO6 w wodnych roztworach syntetycznych związków powierzchniowo czynnych oraz biosurfaktantów. Zaobserwowano liniowy wzrost solubilizacji wraz ze wzrostem stężenia surfaktantu.Przedstawiono także wyniki wymywania oleju PAO6 ze sztucznie zaolejonego piasku (w kolumnie) z pomocą roztworów...
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Functionalized nanodiamonds as a perspective green carbo-catalyst for removal of emerging organic pollutants
PublikacjaRapid industrial and urban development jointly with rising global population strongly affect the large-scale issues with drinking, groundwater, and surface water pollution. Concerns are not limited to environmental issues but also human health impact becoming serious global aspect. Organic pollution becomes a primarily serious hazard, therefore, the novel sophisticated approaches to treat them are thoroughly investigated. Among...
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Recent Advancements in Cyclodextrin-Based Adsorbents for the Removal of Hazardous Pollutants from Waters
PublikacjaWater is an essential substance for the survival on Earth of all living organisms. However, population growth has disturbed the natural phenomenon of living, due to industrial growth to meet ever expanding demands, and, hence, an exponential increase in environmental pollution has been reported in the last few decades. Moreover, water pollution has drawn major attention for its adverse effects on human health and the ecosystem....
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Assessment of metal removal in a surface flow constructed wetland treating landfill leachate
PublikacjaThe study concerns heavy metal retention and transformation processes in a free water surface constructed wetland treating landfill leachate in a temperate climate. The total effectiveness of heavy metals removal in the analyzed CW was evaluated basing on heavy metals inflow and outflow concentrations. The concentrations of eight heavy metals (Fe, Mn, Zn, Pb, Ni, Cu, Cr, Cd) in landfill leachate (LL) and sediments were measured....
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Impact of enhanced pretreatment on biological nutrient removal in municipal wastewater treatment plants
PublikacjaThe aim of this study was to determine the effect of enhanced primary treatment on: increasing primary sludge production for increased biogas production; reducing the organic load on downstream biological treatment processes and thereby reducing energy consumption for aeration; denitrification and enhanced biological phosphorus removal (EBPR) rates in the activated sludge system. For this purpose, three commercial organic polymers...
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Influence of composition of raw wastewater on removal of nitrogen compounds in multistage treatment wetlands
PublikacjaInfluence of composition of raw wastewater on the efficiency of organic matter and nitrogen removal in multistage treatment wetlands has been examined. Commonly used indicators, like COD/BOD5 and BOD5/TN ratio, determining wastewater susceptibility to biodegradation in conventional treatment technologies were assessed. It was confirmed that multistage treatment wetland may be used for treatment of wastewater with high loads of...
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Modelization of Nutrient Removal Processes at a Large WWTP Using a Modified ASM2d Model
PublikacjaThe biodegradation of particulate substrates starts by a hydrolytic stage. Hydrolysis is a slow reaction and usually becomes the rate limiting step of the organic substrates biodegradation. The objective of this work was to evaluate a novel hydrolysis concept based on a modification of the activated sludge model (ASM2d) and to compare it with the original ASM2d model. The hydrolysis concept was developed in order to accurately...
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A Simplified Method of Trend Removal to Determine Noise Observed During a Supercapacitor’s Discharging
PublikacjaIn this paper, new method of trend removal is proposed. This is a simplified method based on Empirical Mode Decomposition (EMD). The method was applied for voltage time series observed during supercapacitor discharging process. It assured the determination of an additive noise component after subtracting the identified trend component. We analyzed voltage time series observed between the terminals of the supercapacitor when discharged...
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Effectiveness of pollutants removal in hybrid constructed wetlands – different configurations case study
PublikacjaIn recent years, an increase in interest in hybrid constructed wetland systems (HCWs) has been observed. The aim of the paper is to compare different HCW configurations in terms of mass removal rates and efficiency of pollutants removal. Analysed data have been collected at multistage constructed wetlands in Poland, which are composed by at least two beds: horizontal subsurface flow (SSHF) and vertical subsurface flow (SSVF). The...
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MXene-based materials for removal of antibiotics and heavy metals from wastewater– a review
PublikacjaAs a novel family of 2D materials, MXenes provide an extensive variety of applications in water and effluent treatment due to their distinctive properties and attractive applicability, including superior electrical conductivity, higher thermal stability, hydrophilicity, and high sorption-reduction capacity. Their excellent sorption selectivity makes them perfect for removing hazardous contaminants. Currently, MXene-based materials...
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Removal of diphenols using pine biochar. Kinetics, equilibrium, thermodynamics, and mechanism of uptake
PublikacjaThermal pyrolysis synthesized activated biochar from the Pinus elliottii sawdust (PS) at 600° C. The obtained activated biochar (PB600) was used for the removal of three diphenols, catechol (CAT), resorcinol (RES), and hydroquinone (HYD), which are utilized mainly in different industries. The PB600 was characterized by several analytical techniques. The BET surface area of 1473 m2.g−1 and a total pore volume of 0.707 cm3 g−1 was...
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Recent advancements in molecularly imprinted polymers for the removal of heavy metal ions and dyes
PublikacjaContamination set off by highly toxic metal ions and dyes is a big threat to the environment and living beings. Various industries like metal plating, mining, pesticides, battery manufacturing, and dyeing release metal ions and toxic dyes directly into the water. It is necessary to remove these toxic substances from the environment. Molecular imprinting technology (MIT) got a lot of attention in the last two decades because of...
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The influence of magnetic particle incorporation on bisphenol A removal by β-cyclodextrin-derived sorbent
PublikacjaA novel, biomass-derived hybrid sorbent Ban-CD-EPI-Fe was successfully synthesized in a coprecipitation method, in which β-cyclodextrin copolymerized with banana peel extract and epichlorohydrin was grafted onto an iron oxide surface. The composition, presence of functional groups, morphology, thermal stability, and magnetic properties of the obtained material were characterized by Powder X-Ray Diffraction (XRD), X-Ray Photoelectron...
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Removal of organic matter and nitrogen in an horizontalsubsurface flow (HSSF) constructed wetland undertransient loads
PublikacjaA monitoring campaign in a horizontal subsurface flow constructed wetland under the influence of transient loads of flow-rate, organic matter, nitrogen and suspended solids showed an irregular removal of COD and TSS and lower both removal efficiencies and mass removal rates than the ones observed in other studies for similar operating conditions. This circumstance is associated to the presence of large amount of particulate organic...
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The Efficiency of P-Removal from Natural Waters with Sorbents Placed in Water Permeable Nonwovens
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Simultaneous Removal of Heavy Metals from Wastewater Using Modified Sodium Montmorillonite Nanoclay
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Phosphate and Nitrate Removal from Coffee Processing Wastewater Using a Photoelectrochemical Oxidation Process
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Iron-based catalysts under solar and visible radiation for contaminants of emerging concern removal
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Amine-functionalized magnetite-silica nanoparticles as effective adsorbent for removal of uranium(VI) ions
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Low temperature removal of SO2 traces from air by MgO-loaded porous carbons
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The Polish perspective on adopting EU standards nitrogen removal at large WWTPs - case studies
PublikacjaW związku z przyjęciem nowych regulacji prawnych w zakresie usuwania azotu w dużych oczyszczalniach ścieków (>100 000 RM), potrzebne są wiarygodne i dokładne informacje na temat wymiarowania stref anoksycznych w komorach osadu czynnego. Badania zostały przeprowadzone w oczyszczalniach Gdańsk-Wschód oraz Gdynia-Dębogórze. Ich celem było porównanie szybkości denitryfikacji określonej w warunkach laboratoryjnych oraz obliczonej na...
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Experimental and numerical investigation of mercury removal from flue gas by sorbent polymer composite
PublikacjaThis paper presents an experimental and numerical investigation of the performance of a sorbent polymer composite (SPC) material used for removing mercury from the flue gases in a full-scale industrial installation. The investigated material is an attractive alternative to activated carbon, which is commonly used for this purpose. While the application of the SPC is characterized by high capital expenditures, this technology offers...
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Application of BiOClnBrm photocatalyst to cytostatic drugs removal from water; mechanism and toxicity assessment
PublikacjaThe photocatalytic activity of series of BiOClnBrm photocatalysts toward degradation and mineralization of the cytostatic drugs 5-fluorouracil (5-FU) and imatinib mesylate (IMA) both singly and in their mixture under simulated solar and visible light irradiation has been investigated. Screening test revealed that among BiOClnBrm photocatalysts synthesized by a solvothermal method, the one with molar 1.3Cl/0.7Br ratio was the most...
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Removal of Siloxanes from Model Biogas by Means of Deep Eutectic Solvents in Absorption Process
PublikacjaThe paper presents the screening of 20 deep eutectic solvents (DESs) composed of tetrapropylammonium bromide (TPABr) and glycols in various molar ratios, and 6 conventional solvents as absorbents for removal of siloxanes from model biogas stream. The screening was achieved using the conductor-like screening model for real solvents (COSMO-RS) based on the comparison of siloxane solubility in DESs. For the DES which was characterized...
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Photolysis for the Removal and Transformation of Pesticide Residues During Food Processing: A State-of-the-Art Minireview
PublikacjaPesticide residues are of great significant issue that exerted adverse effects on humans. There is a need for effective and non-toxic decontamination of pesticide residues during food processing. In this minireview, the recent advances in the degradation of pesticide residues by photolysis have been firstly described during food processing. The mechanisms of pesticide residues destruction by photolysis were discussed accordingly....
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Modeling nutrient removal and energy consumption in an advanced activated sludge system under uncertainty
PublikacjaActivated sludge models are widely used to simulate, optimize and control performance of wastewater treatment plants (WWTP). For simulation of nutrient removal and energy consumption, kinetic parameters would need to be estimated, which requires an extensive measurement campaign. In this study, a novel methodology is proposed for modeling the performance and energy consumption of a biological nutrient removal activated sludge system...
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Removal of VOCs from air and assessment of dominant species in a peat-perlite biotrickling filter
PublikacjaAir pollution has become a major concern because it is inevitably connected with the rapid development of both industrial and residential areas. Volatile organic compounds (VOCs) are emitted from various anthropogenic sources e.g. transportation, factories or landfills as well as recycling factories. It is problematic not only because of the direct impact on humans and environment but also from economy viewpoint as it increases...
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Application of cyanated asphaltenes in gas-phase adsorption processes for removal of volatile organic compounds
PublikacjaThe paper presents an innovative, chemically modified (methylcyanated) asphaltene-based adsorbent that can be an inter-esting low-cost alternative for traditional adsorbents. Adsorption properties of adsorbents were examined by inverse gas chromatography technique, adsorption isotherms, and breakthrough curves. A significant increase in retention volume for pyridine, 2-pentanone, nitropropane, toluene, and 1-butanol was observed....
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Highly effective asphaltene-derived adsorbents for gas phase removal of volatile organic compounds
PublikacjaA novel nitrated asphaltene-derived adsorbent (Asf-Nitro) was prepared using facile isolation and modification procedures. The successful modification was confirmed by Fourier-transform infrared spectroscopy (FTIR). The nitrated adsorbent was evaluated in terms of dispersive and specific interactions, Lewis acid-base properties and adsorption isotherms by means of inverse gas chromatography (IGC). Nitration was found to be extremely...