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Search results for: PLANT VOLATILOME
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The hybrid estimation algorithm for wastewater treatment plant robust model predictive control purposes at medium time scale
PublicationThe paper proposes an approach to designing the hybrid estimation algorithm/module (HEA) with moving measurements window for Wastewater Treatment Plant (WWTP) Robust Model Predictive Control (RMPC) purposes at medium time scale. The RMPC uses a dedicated grey-box model of biological reactor for the system outputs prediction purposes. The grey-box model parameters are dependant on the plant operating point. Hence, these parameters...
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Comparison of two model concepts for simulation of nitrogen removal at a full-scale biological nutrient removal pilot plant
PublicationCelem badań było porównanie zdolności predykcyjnych dwóch mechanistycznych modeli procesu osadu czynnego (ASM1 i ASM3). W tym celu wykorzystano bazę danych empirycznych z pilotowej oczyszczalni ścieków Gummerwald w Hanowerze (Niemcy). Oba badane modele prognozowały szczytowe stężenia azotu amonowego na poziomie >8 gN/m3 w ciągu, którego obciążenie hydrauliczne wzrastało czterokrotnie w porównaniu do okresu bezdeszczowego. Prognozowany...
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Two design concepts of power plant for an inland waterways passenger ship intended for operating on Berlin-Kaliningrad route
PublicationArtykuł przedstawia dwa rozwiązania siłowni dwuczłonowego, śródlądowego statku pasażerskiego przeznaczonego na trasę Berlin-Kaliningrad. Przedstawiono projekty wstępne siłowni głównej umieszczonej na pchaczu oraz omówiono wymagania odnośnie siłowni pomocniczej umieszczonej w barce.
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Tipping point in plant–fungal interactions under severe drought causes abrupt rise in peatland ecosystem respiration
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Possibilities of Using Medicinal Plant Extracts and Salt-Containing Raw Materials from the Aral Region for Cosmetic Purposes
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Process control of leakages in refinery reforming plant by means of Normal Phase High Performance Liquid Chromatography (HPLC)
PublicationPraca dotyczy zbadania możliwości, opracowania nowej procedury badawczej oraz dokonania oznaczeń ¬m-krezolu w strumieniu produktu z procesu reformingu katalitycznego techniką wysokosprawnej chromatografii cieczowej w układzie faz normalnych, z detektorem spektrofotometrycznym typu DAD (NP-HPLC-UV-VIS/DAD). Opracowana procedura stanowi alternatywę dla innych procedur wykorzystujących klasyczne techniki analityczne, albo wykorzystanie...
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Combined operation of 900MW power plant with the ORC through the bleed steam extraction point and CO2 recovery system
PublicationThe work presented here is aimed at utylisation of waste heat in the reference supercritical power plant in the manner to produce electricity in ORC installation. The waste heat is available in the form of a stream of hot water at 90 C, recovered from the exhaust gases in the amount of 200MW. Such low enthalpy heat source is rather insufficient to produce a good quality vapour to feed the ORC turbine. Therefore an original approach...
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Aeration Process in Bioreactors as the Main Energy Consumer in a Wastewater Treatment Plant. Review of Solutions and Methods of Process Optimization
PublicationDue to the key role of the biological decomposition process of organic compounds in wastewater treatment, a very important thing is appropriate aeration of activated sludge, because microorganisms have to be supplied with an appropriate amount of oxygen. Aeration is one of the most energy-consuming processes in the conventional activated sludge systems of wastewater treatment technology (may consume from 50% to 90% of electricity...
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Direct-contact condensation from vapour- gas mixture in a spray ejector condenser for negative CO2 power plant
PublicationDirect-contact condensation of vapour containing the inert gas on a spray of subcooled liquid exists in a number of technical applications. For example, it may be found in the nuclear industry (e.g. pressurized jet under normal operating conditions, in safety analyses) or in the chemical industry (e.g. mixing-type heat exchanger, degasser, sea water desalting). The problem is also essential to modelling and analysis of some...
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Chemical and biological evaluation of antioxidant activity of endogenous redox-active compounds compared to plant-derived exogenous antioxidants
PublicationThe research conducted so far has shown that endogenous antioxidants, despite being regarded as the first line of antioxidant defense, may not be sufficient to maintain redox homeostasis in cells exposed to oxidative stress. The results obtained in the doctoral dissertation show that endogenous redox-active compounds were moderate or weak scavengers of ABTS and DPPH radicals, while in cellular setting, their impact on the reducing...
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Sustainable recovery of plant essential Nitrogen and Phosphorus from human urine using industrial coal fly ash
PublicationCoal-based thermal power plants play a pivotal role in meeting global energy demand. The amount of fly ash generated from these plants increases every year, and its successful use has posed a significant environmental risk in the last decade. In this study, coal fly ash was packed in a fixed-bed adsorption column to remove Urea–N from synthetic human urine. To assess the efficacy of fly ash in the removal of Nitrogen, various process...
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Thermodynamic Analysis of Negative CO2 Emission Power Plant Using Aspen Plus, Aspen Hysys, and Ebsilon Software
PublicationAbstract: The article presents results of thermodynamic analysis using a zero-dimensional mathematical models of a negative CO2 emission power plant. The developed cycle of a negative CO2 emission power plant allows the production of electricity using gasified sewage sludge as a main fuel. The negative emission can be achieved by the use this type of fuel which is already a “zeroemissive” energy source. Together with carbon capture...
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Different design aspects of an Organic Rankine Cycle turbine for electricity production using a geothermal binary power plant
PublicationIn recent years, pressure has been growing to increase the share of renewable energy sources in electricity generation, which may offer opportunities for the development of geothermal energy in regions that have been so far considered unprofitable in this respect. One such country currently undergoing an energy transition is Poland in which low-temperature geothermal resources are currently used for district heating and recreation...
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Manufacturing and Recycling Impact on Environmental Life Cycle Assessment of Innovative Wind Power Plant Part 2/2
PublicationThe process of conversion of wind kinetic energy into electricity in innovative wind power plant emits practically no harmful substances into the environment. However, the production stage of its components requires a lot of energy and materials. The biggest problem during production plan-ning process of an innovative wind power plant is selection of materials and technologies and, consequently, the waste generated at this stage....
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Manufacturing and Recycling Impact on Environmental Life Cycle Assessment of Innovative Wind Power Plant Part 1/2
PublicationWind power plants are considered as ecologically-clean source of energy. However, manufacturing processes cannot be treated that way. Manufacturing processes consume huge amount of electrical and thermal energy and significant amount of materials, e.g. steel, polymers, oils and lubricants. All of the above could be potentially harmful for environment. There are not many works and publications regarding life-cycle analysis of wind...
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Failures and a concept of corrosion protection system for spiral classifiers at KGHM Polska Miedź S.A. Ore Concentration Plant
PublicationThe Ore Concentration Plant, where the process of flotation is carried out as well as the final production of copper concentrate, plays a key role in the entire production line of KGHM Polska Miedź S.A. Majority of operations related to the run-of-mine preparation to copper flotation enrichment are carried out in a water environment. The maintaining of production process continuity requires to pursue minimisation of many production...
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Detection of the Plant Pathogen Pseudomonas Syringae pv. Lachrymans on Antibody-Modified Gold Electrodes by Electrochemical Impedance Spectroscopy
PublicationThe present work describes an impedimetric immunosensor for Pseudomonas syringae pv. lachrymans (Psl) detection. This pathogen infects many crop species causing considerable yield losses, thus fast and cheap detection method is in high demand. In the assay, the gold disc electrode was modified with 4-aminothiophenol (4-ATP), glutaraldehyde (GA), and anti-Psl antibodies, and free-sites were blocked with bovine serum albumin (BSA)....
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Utilisation of waste heat from the power plant by use of the ORC aided with bleed steam and extra source of heat
PublicationUtilization of waste heat recovered from the exhaust gases of the power generation unit by means of ORC (organic Rankine cycles) installation is considered. The waste heat is available in the form of a stream of hot water having temperature of 90 stC in the amount of 200 MWt. To increase evaporation temperaturę of ORC working fluid the heat of steam from the extraction points from the low-pressure part of steam turbine is used....
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Activated Tungsten Inert Gas Weld Characteristics of P91 Joint for Advanced Ultra Supercritical Power Plant Applications
PublicationActivated Tungsten Inert Gas (A-TIG) welding, a variant of tungsten inert gas (TIG) welding, was used for welding P91. In Generation IV power plants, P91 welds are prone to premature failure due to the presence and formation of brittle phases and creep at high temperatures. When performing A-TIG welding, the flux composition plays a role in the reversal of the Marangoni flow in the weld pool, which ultimately determines the level...
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Market Price Prediction of Property Rights from Gas Fired Plants or Plants with Total Installed CHP Source Capacity Below 1 MW until 2025
PublicationThe resolution on the Polish Energy Policy until 2030 (PEP-30) was adopted by the Council of Ministers on 10 November 2009. The document specifies the combined electricity and heat generation as a direction of pursuing the goals of energy efficiency, fuel and energy supply security, competitive fuel and energy markets development, and reduction of the energy sector’s environmental impact. PEP-30 assumes that electricity generation...
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Generation of Optimal Process Plan Alternatives for ManufacturingMechanical Components
PublicationOmówiono aktualny stan wiedzy dotyczący wykorzystania systemów komputerowo wspomaganego projektowania procesów technologicznych - CAPP. Przedstawiono problemy związane z integracją systemów CAPP z systemami CAD. Omówiono założenia dla generowania optymalnych wariantów procesów wytwarzania z zastosowaniem modułów technologicznych tzw. features, wg metody gałęzi i ograniczceń (ang. branch-and-bound).
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How to eliminate the formation of chlorogenic acids artefacts during plants analysis? Sea sand disruption method (SSDM) in the HPLC analysis of chlorogenic acids and their native derivatives in plants
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Chemical variability of Rhododendron tomentosum (Ledum palustre) essential oils and their pro-apoptotic effect on lymphocytes and rheumatoid arthritis synoviocytes
PublicationRhododendron tomentosum (Ledum palustre) is an aromatic plant traditionally used for alleviating rheumatic complaints which makes it a potential candidate for a natural drug in rheumatoid arthritis (RA) treatment. However, the effects of plants’ volatiles on apoptosis of synovial fibroblasts and infiltrating leucocytes of RA synovia, have not been reported. Volatile fraction of R. tomentosum is chemically variable and chemotypes...
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Influence of meniscus shape in the cross sectional plane on the knee contact mechanics
PublicationWe present a three dimensional finite element analysis of stress distribution and menisci deformation in the human knee joint. The study is based on the Open Knee model with the geometry of the lateral meniscus which shows some degenerative disorders. The nonlinear analysis of the knee joint under compressive axial load is performed. We present results for intact knee, knee with partial and complete radial posterior meniscus root...
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Influence analysis of selected parameters on the ASON/GMPLS control plane performance
PublicationThe paper regards the problem of ASON/GMPLS performance. The authors present influence analysis of selected parameters on the ASON/GMPLS control plane performance represented in mean Connection Set-up Time E(CST) and mean Connection Release Time E(CRT). The selected parameters are: offered traffic, request intensity and proportion of requests class. The influence analysis is performed with simulation method by using OMNeT++ discrete-event...
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Radiation phenomena from metamaterial cylinders at oblique plane wave incidence.
PublicationW pracy przedstawiono wpływ ujemnej przenikalności elektrycznej i magnetycznej rezonatorów cylindrycznych umieszczonych w wolnej przestrzeni na parametry rozproszenia. Wykorzystano zmodyfikowaną procedurę iteracyjną i metodę dopasowania rodzajów w celu badania fali rozproszonej od układu cylindrów przy ukośnym padaniu fali płaskiej.
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Data Plane Performance Issues Concerning MBMS in UMTS Release 6
PublicationPrzedstawiono funkcjonowanie mechanizmu MBMS w wersji 6 systemu UMTS. MBMS, będący następcą mechanizmu CBS funkcjonującego w sieciach 2G i 2.5G, umożliwia efektywne rozgłaszanie danych o wysokich wymaganiach na pasmo oraz jakość usług (QoS), takich jak danych multimedialnych. W artykule przedyskutowano możliwość zapewnienia odpowiedniego poziomu QoS przez MBMS oraz zaproponowano nowy, dwuetapowy scheduler w warstwie MAC-c/sh/m,...
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Plans Ornaments in The Architectural Details of Art Nouveau Townhouses And Villas in Sopot
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Using adsorption chillers for utilising waste heat from power plants
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Ficus plants: State of the art from a phytochemical, pharmacological, and toxicological perspective
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The Use of Organic Coagulants in the Primary Precipitation Process at Wastewater Treatment Plants
PublicationMeasurements for determining the effect of chemically enhanced primary treatment (CEPT) on the efficiency of pollutant removal from wastewater were carried out using conventional inorganic coagulants PIX113 with polymer A110 (Kemipol, Police, Poland) and unconventional cationic organic coagulants Cofloc (Attana, Coalville, UK) C29510 (Kemipol, Police, Poland) and Sedifloc 575 (3F Chimica, Sandrigo, Italy). The average removal efficiency...
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Surface and interfacial anti-plane waves in micropolar solids with surface energy
PublicationIn this work, the propagation behaviour of a surface wave in a micropolar elastic half-space with surface strain and kinetic energies localized at the surface and the propagation behaviour of an interfacial anti-plane wave between two micropolar elastic half-spaces with interfacial strain and kinetic energies localized at the interface have been studied. The Gurtin–Murdoch model has been adopted for surface and interfacial elasticity....
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Quality of Service in ASON/GMPLS Network with Hierarchical Control Plane Structure
PublicationThe paper presents the problem of quality of service for hierarchical control plane structure of Automatically Switched Optical Network (ASON) utilizing Generalized Multi-Protocol Label Switching (GMPLS). The approach is implemented to control the multidomain network with required quality of service, in a use case of incomplete domain network information. The authors examine different factors, including resource reservation algorithms...
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Contribution of PsbS Function and Stomatal Conductance to Foliar Temperature in Higher Plants
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Biotechnological Potential of LSD1, EDS1, and PAD4 in the Improvement of Crops and Industrial Plants
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Completing Autophagy: Formation and Degradation of the Autophagic Body and Metabolite Salvage in Plants
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Critical approach to PLE technique application in the analysis of secondary metabolites in plants
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The Impact of Technological Processes on Odorant Emissions at Municipal Waste Biogas Plants
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Application of Sea Sand Disruption Method for HPLC Determination of Quercetin in Plants
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A fast algorithm for computing the flux around non-overlapping disks on the plane
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Boundary Value Problems for Half-Plane, Strip and Rectangle with Circular Inclusions
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Analysis of application of feed-water injector heaters to steam power plants
PublicationStrumienice parowo-wodne to urządzenia, w których zachodzi wymiana masy, pędu i energii między dwoma płynami, pozostającymi w bezpośrednim kontakcie. Mogą one pracować jako pompy, mieszalniki bądź bezprzeponowe wymienniki ciepła. W tym ostatnim aspekcie są one bardzo interesujące do użycia jako regeneracyjne podgrzewacze wody w obiegu cieplnym Rankina stosowanym w siłowniach parowych na lądzie oraz na morzu (statki i okręty). W...
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FT-Raman spectroscopy as a tool in evaluation the response of plants to drought stress
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Energy conversion in small water plants with variable speed PM generator
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Light emitting diodes optimisation for secondary metabolites production by Droseraceae plants
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Modeling of the finite amplitude plane wave propagation in non-dissipative medium
PublicationPraca prezentuje wyniki analizy teoretycznej zagadnienia propagacji fali płaskiej o skończonej amplitudzie w ośrodku wodnym bez dyssypacji. Przedstawiono model matematyczny i przykładowe wyniki obliczeń numerycznych. Model matematyczny zbudowano w oparciu o jednowymiarowe równania mechaniki płynów. Do rozwiązania zagadnienia zastosowano metodę różnic skończonych. Analizowano zmiany ciśnienia i zmiany widma. Badano zbieżność i dokładność...
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Cogenerative micro power plants - a new direction for development of power engineering?
PublicationW pracy przedstawiono rozważania dotyczące perspektywy mikrosiłowni domowych w gospodarce rozproszonej. Przedstawiono oryginalne kryterium doboru czynnika roboczego w mikrosiłowni oraz przedstawiono sprawności cieplne i egzergetyczne obiegów Clausiusa-Rankina realizujących pracę mikrosiłowni.
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Thermodynamic Cycles of Air Microturbine Power Plants Working on Biomass Fuels
PublicationThe gas turbine engine is modified to work as an air turbine set which consists, in the simplest arrangement, of a compressor, a heat exchanger and a turbine. Air is a working medium for both: the compressor and the turbine. This kind of air turbine set can be applied in power plants working on biomass fuels. In this solution we can burn fuels of varying parameters in the external combustion chamber without any harmful effects...
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Motywacje czy plany – czynniki wpływające na długookresowy wzrost przedsiębiorstwa
PublicationPomimo wielu lat badań nad czynnikami wpływającymi na wzrost MSP, do chwili obecnej nie uzyskano jednoznacznej odpowiedzi dlaczego niektóre przedsiębiorstwa wzrastają, a inne nie. Za ten brak odpowiedzi, należy winić przede wszystkim zbyt duże możliwości w wyborze metodyki badawczej, co prowadzi do uzyskiwania różnych wyników badań przez różnych badaczy. Dotyczy to zarówno definiowania i mierzenia wzrostu, jak i wykorzystywanych...
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Cognitive engineering and functional safety technology for reducing risks in hazardous plants
PublicationCognitive engineering is considered nowadays as interesting multidisciplinary domain that focuses on improving the relations between humans and the systems that are supervised and operated. The industrial automation and control systems (IACS) in hazardous plants are increasingly computerized and perform various safety functions. These are designed and implemented according to the functional safety concept. The objective is to maintain...