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Wyniki wyszukiwania dla: bzd
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Assessment of diversity and composition of bacterial community in Sludge Treatment Reed Bed systems
PublikacjaDue to their low emission of odours and lack of the need to apply additional chemical agents, sludge treatment reed beds (STRBs) constitute an economically feasible and eco-friendly approach to sewage sludge management. Correctly designed and operated STRBs ensure effective reduction of the dry matter content coupled with the mineralisation of organic compounds. Successful operation of STRBs relies on complex interactions between...
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Application of BDD thin film electrode for electrochemical decomposition of heterogeneous aromatic compounds
PublikacjaThe aim of the presented study is to investigate the applicability of electrochemical oxidation of aromatic compounds containing heteroatoms, e.g. waste from production of pesticides or pharmaceutics, at a borondoped diamond (BDD) electrode. The BDD electrodes were synthesized by microwave plasma enhanced chemical vapour deposition (MW PE CVD). Investigation of the electrode surface by optical microscopy and scanning electron microscopy...
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The application of moving bed biofilm reactor to denitrification process after trickling filters
PublikacjaThe paper presents research of a prototype moving bed biofilm reactor (MBBR). The device was used for the post-denitrification process and was installed at the end of a technological system consisting of a septic tank and two trickling filters. The concentrations of suspended biomass and biomass attached on the EvU Perl moving bed surface were determined. The impact of the external organic carbon concentration on the denitrification...
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Possible effects of the 1984 St. Clair River ice jam on bed changes
PublikacjaThis study examines the possible effect of the record ice jam of 1984 in the St. Clair River on river bed changes and conveyance. Numerical simulations were made to examine the flow and bed shear stresses during the jam formation and release periods. Simulation results indicate that the ice jam in the river did not cause a significant increase in bed shear stress compared to pre- and post-jam open water conditions. The insignificant...
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GAMBIT's position within the European Union's III Road Safety Plan
PublikacjaOtwarcie Seminarium GAMBIT 2006, poświęcone wnioskom z dotychczasowych działań oraz planom na przyszłość, zawartym w najnowszym Krajowym Programie GAMBIT 2005. Prace nad nim rozpoczęto w sierpniu 2004, czyli tuż po wejściu Polski do Unii Europejskiej. W kwietniu 2005 Rada Ministrów przyjęła GAMBIT 2005 jako program dla Polski na lata 2005-2013, skonstruowany zgodnie z metodyką opracowaną dla tych krajów UE-25, których poziom zagrożenia...
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The effect of fixed adsorption bed height on adsorption of gaseous mixture of volatile organic compounds
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A Closed Bipolar Electrochemical Cell for the Interrogation of BDD Single Particles: Electrochemical Advanced Oxidation
PublikacjaA closed bipolar electrochemical cell containing two conductive boron-doped diamond (BDD) particles of size 250 – 350 m, produced by high-pressure high-temperature (HPHT) synthesis, has been used to demonstrate the applicability of single BDD particles for electrochemical oxidative degradation of the dye, methylene blue (MB). The cell is fabricated using stereolithography 3D printing and the BDD particles are located at either...
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The application of Monod equation to denitrification kinetics description in the moving bed biofilm reactor (MBBR)
PublikacjaIn this paper, the kinetic constants Vmax and KCOD occurring in the Monod equation, which describe the denitrification process in the moving bed, are determined. For this purpose, a laboratory moving bed biofilm reactor (MBBR) was used. The filling of the reactor consisted of EvU Perl carriers. The experiment was carried out with an excess of nitrate, and denitrification rate was dependent on the concentration of external organic...
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Photocatalytic degradation of volatile and non volatile organics on titanium dioxyde particles in fluidized bed.
PublikacjaPrzeprowadzono degradację metyloetyloketonu w obecności dwutlenku tytanu jako fotokatalizatora. Badano wpływ początkowego stężenia substancji i stężenia fotokatalizatora na szybkość fotokatalitycznego rozkładu.
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Effect of Metal and Carbon Nanotube Additives on the Thermal Diffusivity of a Silica Gel-Based Adsorption Bed
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Implementation of Fluidized Bed Concept to Improve Heat Transfer in Ecological Adsorption Cooling and Desalination Systems
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Towards enhanced heat and mass exchange in adsorption systems: The role of AutoML and fluidized bed innovations
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Nitrogen removal in vertical flow constructed wetlands: influence of bed depth and high nitrogen loadings
PublikacjaThe aim of the study was to evaluate the nitrogen removal and its effects on the plant’s growth and leaves morphology. using two subsurface vertical flow (VF bed), with different depths (0.24 m2 × 0.70 m; 0.24 m2 × 0.35 m) and nitrogen load increments. The VF bed were planted with Vetiveria zizanioides, filled with light expanded clay aggregates (Leca®NR 10/20) and fed in parallel mode with synthetic wastewater. High ammonium nitrogen...
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Safeguarding democracy during pandemics. Social distancing, postal, or internet voting—the good, the bad, or the ugly?
PublikacjaDuring a pandemic, many countries and organizations must decide whether to postpone upcoming elections or to hold them (Krimmer et al., 2020a). If the decision is made to hold the election, three main scenarios come to mind: continue using the existing system but include measures to ensure the health of participants; or look for alternatives among remote voting channels which could ensure social distancing is guaranteed either...
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Fatigue of titanium alloy Ti6Al4V with diamond structure obtained by Laser Power Bed Fusion method
PublikacjaThis paper presents the results of fatigue tests conducted on Ti6Al4V titanium alloy with diamond structure obtained by the Laser Power Bed Fusion method. Samples used in tests were printed with porosities: 81%, 73%, 50%, 34% and near-zero porosity. Samples were subjected to cyclic tests with a constant stress amplitude. The number of cycles until sample failure was registered. Obtained fatigue test results made it possible to...
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Light transmission measurement through the fluidized bed photoreactor
Dane BadawczeDataset contains light transmission measurements through the fluidized bed photoreactor. Two sources of light were used: UV-LEDs and UV fluorescent. Measurements were performed at different air flows: 0, 80, 160 and 240 ml/min. The detailed measurement and equipment data was described in measurment info.txt file.
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Photocatalytic ethylene decomposition with the use of fluidized bed photoreactor
Dane BadawczeData contain exported raw data recorded during decomposition of ethylene during utilization of fluidized bed photoreactor equipped with either UV-LEDs or fluorescent UV lamps as well as in either humid or dry conditions. In separate folder, the photographs of the photocatalytic system were included. As photocatalytic material, polystyrene spheres coated...
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Determination of Chemical Oxygen Demand (COD) at Boron-doped Diamond (BDD) Sensor by Means of Amperometric Technique
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Construction of an innovative adsorbent bed configuration in the adsorption chiller - Selection criteria for effective sorbent-glue pair
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Short-term Price Reaction to Involuntary Bankruptcies Filed in Bad Faith: Empirical Evidence from Poland
PublikacjaPurpose: Assessing the reaction of the prices of shares of companies listed in the Warsaw Stock Exchange to the public disclosure of information about the filing a bankruptcy petition in bad faith by creditors. Design/Methodology/Approach: Event study analysis. Findings: It can therefore be assumed that the filing of an unfounded bankruptcy petition does not, in the short term, have a statistically significant negative impact on...
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Analiza zastosowania gumowych słupków na przejściach przez dwupasowe drogi jednokierunkowe do poprawy brd
PublikacjaBezpieczeństwo pieszych w Polsce, mimo prowadzonych wielu działań systemowych, nadal pozostawia wiele do życzenia i jest na niepokojąco niskim poziomie. W roku 2018 prawie 24% wypadków stanowiły wypadki z pieszymi, a udział ofiar śmiertelnych w nich stanowi od wielu lat niezmiennie około 30% pieszych. W celu zwiększenia bezpieczeństwa na przejściach dla pieszych znajdujących się na jezdniach o przekroju 2 x 2 zaczęto niedawno...
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Determination of chemical oxygen demand (cod) at boron-doped diamond (bdd) sensor by means of amperometric technique
PublikacjaA boron-doped diamond (BDD) sensor was proposed for effective detection of chemical oxygen demand (COD) by means of amperometric technique. Thin boron doped diamond active sensor layer was deposited on Si wafer and glassy carbon substrate by Microwave Plasma Enhanced Chemical Vapor Deposition (MW PE CVD). The structure of BDD was confirmed by Raman spectra analysis. Broad Raman bands centered at 482 cm-1 and 1219 cm-1 are typical...
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IV program brd Unii Europejskiej : Bezpieczeństwo ruchu drogowego prawem i obowiązkiem każdego obywatela
PublikacjaW maju 2007r. Minister Nauki i Szkolnictwa Wyższego powierzył Konsorcjum Naukowemu, kierowanemu przez Politechnike Gdańską, realizacje trzyletniego projektu Badawczego pt. ''Zintegrowany system bezpieczeństwa transportu''. Projektowi nadano akronim ZEUS. Głównym celem projektu jest stworzenie przez badania naukowe merytorycznych podstaw dla rozwoju integracji bezpieczeństwa transportu w Polsce, traktując tę integrację jako warunek...
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Influence of the boron doping level on the electrochemical oxidation of the azo dyes at Si/BDD thin film electrodes
PublikacjaIn this study the efficiency of electrochemical oxidation of aromatic pollutants, such as reactive dyes, at boron-doped diamond on silicon (Si/BDD) electrodes was investigated. The level of [B]/[C] ratio which is effective for the degradation and mineralization of selected aromatic pollutants, and the impact of [B]/[C] ratio on the crystalline structure, layer conductivity and relative sp3/sp2 coefficient of a BDD electrode were...
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Determination of Chemical Oxygen Demand (COD) at Boron-doped Diamond (BDD) Sensor by Means of Amperometric Technique
PublikacjaA boron-doped diamond (BDD) sensor was proposed for effective detection of chemical oxygen demand (COD) by means of amperometric technique. Thin boron doped diamond active sensor layer was deposited on Si wafer and glassy carbon substrate by Microwave Plasma Enhanced Chemical Vapor Deposition (MW PE CVD). The structure of BDD was confirmed by Raman spectra analysis. Broad Raman bands centered at 482 cm-1 and 1219 cm-1 are typical...
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Pyrolysis of RDF and Catalytic Decomposition of the Produced Tar in a Char Bed Secondary Reactor as an Efficient Source of Syngas
PublikacjaOne of the technical limitations of refuse-derived fuel (RDF) pyrolysis is the high content of tar in its gas products. In order to resolve this problem, a two-stage RDF pyrolysis with a catalyst based on char from RDF pyrolysis is proposed. This paper presents the results of municipal waste pyrolysis beginning in an oven heated to 480 °C and ending with catalytic tar cracking carried out in the temperature range from 800 to 1000...
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Tattooed man: Could menstrual cycle phase and contraceptive use change female preferences towards bad boys?
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Characterization of bacterial structures in two-stage moving-bed biofilm reactor (MBBR) during nitrification of the landfill leachate
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Pilot installation for thermal utilization of meat-and-bone meal using the rotary kiln pyrolyzer and the fluidised bed boiler
PublikacjaThe technology of thermal utilization of meat-and-bone meal (MBM) is still at the research state. However, there are already a number of existing pilot-scale installations that provide the complete, effective and environmentally safe process conducting. The universal technology was developed that allows to combust various types of waste, including animal waste, municipal waste and sludge, mixed at any ratio with different types...
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A Strategy for Managing the Operation of Technical Infrastructure Based on the Analysis of “Bad Actors”—A Case Study of LOTOS Group S.A.
PublikacjaThe article covers issues related to the selection of a management strategy for the operation of technical infrastructure. It contains the approaches, methodology and a general model of the system of operation of the Maintenance Services of the LOTOS Group production company, which is an example of a large oil concern. Nowadays, an increasing aspect is put on the efficiency of individual repair processes, as well as the operation...
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Fixed-bed adsorption of chlorinated hydrocarbons from multicomponent aqueous solution onto activated carbon: Equilibrium column model
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Application of GC-MS/MS technique for the determination of benzodiazepines in blood samples
PublikacjaAbstract Benzodiazepines (BZD) are widely used as pharmaceuticals in medicine. However, due to psychostimulatory effect of BZD, in the last decade, they are more and more often used as drugs of abuse. These compounds produce similar effects to classical illicit drugs and are sold as “legal” alternatives to them as new psychoactive substances (NPS). Currently new BZD, named designer benzodiazepines (DBZD), are synthesized each year...
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Selective Photocatalytic Oxidation of 4-Methoxybenzyl Alcohol to p-Anisaldehyde in Organic-Free Water in a Continuous Annular Fixed Bed Reactor
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Thermal utilization of meat-and-bone meal using the rotary kiln pyrolyzer and the fluidized bed boiler – The performance of pilot-scale installation
PublikacjaThermal utilization of meat-and-bone meal (MBM) is subject to stringent regulations that are meant to provide elimination of any potential pathogens. Incineration as well as other possible routes for thermal conversion of MBM are still at the research state. The universal technology was developed that allows to combust various types of waste organic materials, including animal waste, municipal solid waste and sludge, mixed at any...
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Actual field corrosion rate of offshore structures in the Baltic Sea along depth profile from water surface to sea bed
PublikacjaThe paper presents the results of field electrochemical investigations on the corrosion rate of carbon steel in seawater of the Baltic Sea at the location of the Baltic Beta production rig. The measurements were conducted throughout the year in seawater at different depths from the sea surface to the sea bed (about 75 m). The results revealed corrosion aggressiveness of the seawater along the entire depth profile. There was...
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Characterization of diatomaceous earth coated with nitrated asphaltenes as superior adsorbent for removal of VOCs from gas phase in fixed bed column
PublikacjaAsphaltenes isolated from bitumen possess unusual adsorption characteristics that can be further enhanced by chemical modifications to promote interactions with VOCs’. Herein, nitrated asphaltenes are used as an active layer coated on a surface of a diatomaceous earth, in order to prepare an efficient adsorbent (AsfNitro). Breakthrough experiments with benzene, pyridine, and 1-nitropropane revealed significant increase in adsorption...
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Emission characteristics for gaseous- and size-segregated particulate PAHs in coal combustion flue gas from circulating fluidized bed (CFB) boiler
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Prolonged head down bed rest-induced inactivity impairs tonic autonomic regulation while sparing oscillatory cardiovascular rhythms in healthy humans
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Budownictwo na tle strategii zrównoważonego rozwoju. Maxymalnie Bud. Przew.dla Inwestora**2003 nr 1 s. 23-26, 5 rys.
PublikacjaBudownictwo zrównoważone to budownictwo znajdujące odpowiednią drogę rozwojudla przemysłu materiałów budowlanych oraz budownictwo, którego produktem fi-nalnym jest budynek. Ten ostatni powinien charakteryzować się wysoką ocenąpod względem prefencji środowiskowych jako, że począwszy od fazy projektoweji budowlanej - po kres tzw. życia technicznego, ma decydujący wpływ na sto-pień degradacji środowiska naturalnego.
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Effects of n-butanol presence, inlet loading, empty bed residence time and starvation periods on the performance of a biotrickling filter removing cyclohexane vapors from air
PublikacjaThis paper presents the results of investigations on the removal of cyclohexane vapors from air using a peat-perlite packed biotrickling filter. Effects of basic process parameters i.e. IL (inlet loading) and EBRT (empty bed residence time) as well as introduction of n-butanol to the treated air stream and starvation periods on the process performance were evaluated. The results show that the introduction of hydrophilic n-butanol...
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BDD Elektrochemiczna modyfikacja elektrod z cienkowarstwowego diamentu domieszkowanego borem (BDD)
ProjektyProjekt realizowany w Katedra Elektrochemii, Korozji i Inżynierii Materiałowej zgodnie z porozumieniem UMO-2015/17/D/ST5/02571 z dnia 2016-02-02
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Moduł e-Doręczeń w EZD
WydarzeniaCentrum Obiegu Dokumentów zaprasza na szkolenie online z zakresu obsługi modułu e-Doręczeń w systemie EZD.
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Moduł e-Doręczeń w EZD
WydarzeniaCentrum Obiegu Dokumentów zaprasza na szkolenie online z zakresu obsługi modułu e-Doręczeń w systemie EZD.
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Moduł e-Doręczeń w EZD
WydarzeniaCentrum Obiegu Dokumentów zaprasza na szkolenie online z zakresu obsługi modułu e-Doręczeń w systemie EZD.
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Rejestracja korespondencji w systemie EZD
WydarzeniaCentrum Obiegu Dokumentów zaprasza na szkolenie przypominające z zakresu rejestracji tradycyjnej korespondencji wychodzącej w systemie EZD.
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Development of UV/H 2 O 2 /TiO 2 –LECA hybrid process based on operating cost: Application of an effective fixed bed photo-catalytic recycled reactor
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Andrzej Składanowski prof. dr hab. inż.
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Podpis kwalifikowany w EZD – szkolenie online
WydarzeniaDział Obiegu i Archiwizacji Dokumentów zaprasza osoby, które odbyły szkolenie podstawowe z systemu EZD PUW, na spotkanie online mające na celu poszerzenie wiedzy w zakresie obsługi modułu podpisów kwalifikowanych.
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Diamondized carbon nanoarchitectures as electrocatalytic material for sulfate-based oxidizing species electrogeneration
PublikacjaThe introduction of nanotechnology seems to be an imperative factor to intensify the synergic effects of electrocatalytic materials to produce strong oxidant species or to increase the active sites on their surfaces as well as to enhance the conversion yield in a fuel cell, high-added value products, electrolytic treatment for environmental protection or the detection limit in electroanalysis. Recently, a new type of 3D-diamond...
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The good, the bad, and the ugly: space use and intraguild interactions among three opportunistic predators—cat (Felis catus), dog (Canis lupus familiaris), and red fox (Vulpes vulpes)—under human pressure
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