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Search results for: walryzacja biomasy
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Laboratoryjny biofiltr strużkowy do oczyszczania powietrza z lotnych związków organicznych o charakterze odorowym
PublicationW pracy przedstawiono wyniki badań doświadczalnych procesu dezodoryzacji powietrza zanieczyszczonego parami toluenu w biofiltrze ze złożem zraszanym (tj. w biofiltrze strużkowym). Zaproponowano układ badawczy do procesu biofiltracji, oparty na bioreaktorze dwusekcyjnym, wypełnionym ceramicznymi pierścieniami Raschiga. Złoże biofiltra zaszczepiono drobnoustrojami z rodzaju Candida. Jako ciecz zraszającą stosowano wodny roztwór soli...
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Energy neutrality versus carbon footprint minimization in municipal wastewater treatment plants
PublicationThis work aimed to compare the carbon footprint (CF) of six full-scale wastewater treatment plants (WWTPs). The CF was estimated in the range of 23–100 kg CO2e per population equivalent. In the total CF, the direct emissions held the highest share (62–74%) for the plants with energy recovery from biogas. In the plants depending entirely on the power grid, the indirect emissions due to energy consumption dominated the total CF (69–72%)....
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Inhibition of the granular anammox process by the high concentration of free ammonia.
PublicationHigh concentrations of ammonia and nitrite, typical for reject water treatment in the anammox process with the use of high temperatures and pH, may cause free ammonia (FA) inhibition. In this study, the inhibitory effect of FA on anammox process rate was investigated in a bench-scale sequencing batch reactor (SBR) with granular anammox biomass. Results of the study present that the anammox process could be successfully operated...
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REVIEW ON COMPETITION АОB AND NОВ AS AN IMPORTANT ELEMENT FOR COST EFFECTIVE METHODS OF REMOVING NITROGEN FROM WASTEWATER
PublicationThe aim of this paper is analysis of process principles and possible factors used to induce inhibition of nitrite oxidation by NOB (Nitrite Oxidizing Bacteria) which could be obtained during not very well understood processes: so called “shortcut” or “partial” nitrification as well deammonification, by qualitative/quantitative studies of AOB (Ammonium Oxidizing Bacteria) and NOB populations in activated...
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BioBIGG Bioeconomy in the South Baltic Area: Biomass-based Innovation and Green Growth
ProjectsProject realized in Department of Energy and Industrial Apparatus from 2017-08-30
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BioBIGG Bioeconomy in the South Baltic Area: Biomass-based Innovation and Green Growth (BioBIGG)
ProjectsProject realized in Department of Energy and Industrial Apparatus according to STHB.01.02.00-DK-0086/16-00 agreement from 2017-08-30
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Przedmieszka poliolowa i sposób otrzymywania nowej generacji pianek poliuretanowych z biomasy alg
Inventions -
RSM for pre-treatment optimisation
Open Research DataBox Behnken Design was prepared to define optimal contitions for biomass pretreatment
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The Influence of Low-Temperature Disintegration on the Co-Fermentation Process of Distillation Residue and Waste-Activated Sludge
Publication: Innovative low-temperature disintegration (process temperature 55 ◦C and oxygen concentration 0.2 mg/dm3 ) can be an economically rational technology to intensifying energy production from renewable sources. The proposed process can achieve a degree of disintegration—under optimal conditions—of about 50%, which is excellent when compared with other methods of feed pre-treatment. The low-temperature disintegration of distillation...
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A novel concept of negative CO2 emission power plant for utilization of sewage sludge
PublicationCarbon Capture and Storage (CSS) technology is considered an important “bridge technology”, allowing effective abatement of CO2 emissions for power units using fossil fuels. However, if biomass is used in a power plant, equipped with CCS system, negative CO2 emissions can be achieved. In practice, wide development of such technologies would enable not only reduction of CO2 emissions, but also reversal of the harm done so far. In...
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Removal of VOCs from air and assessment of dominant species in a peat-perlite biotrickling filter
PublicationAir 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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Analyzing and improving a mechanistic model for the Microthrix parvicella in activated sludge systems
PublicationW pracy przedstawiono wyniki estymacji parametrów dla mechanistycznego modelu bakterii Microthrix parvicella w systemach osadu czynnego. W tym celu wykorzystano dane z oczyszczalni ścieków w Szwajcarii oraz wyniki dodatkowych badań laboratoryjnych w reaktorze nieprzepływowym. Model właściwie prognozował szybkość poboru tlenu (mierzoną dla różnych substratów) oraz zawartść bakterii Microthrix w biomasie osadu czynnego.
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Sposób wytwarzania materiałów poliuretanowych z reaktywnych polioli oraz otrzymywanych z odpadów po przerobie drewna lub odpadów drewnopodobnych
InventionsPrzetwarzanie polioli z biomasy roślinnej i/lub odpadów drewnopodobnych i/lub polioli petrochemicznych, domieszkowanych odpadami drewnianymi i/lub drewnopodobnymi na kompozyt poliuretanowy.
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Application of Diagnostic Ratios of PAHs to Characterize the Pollution Emission Sources
PublicationThe paper summarizes the potential of application of parent polycyclic aromatic hydrocarbons (PAHs) to identify their emission sources. Four parent PAHs diagnostic ratios are used for this purpose: anthracene/(anthracene + phenanthrene), fluoranthene/(fluoranthene + pyrene), benzo[a]pyrene/(benzo[a]pyrene + chryzene) and indeno[1,2,3-c,d]pyrene/(indeno[1,2,3-c,d]pyrene + benzo[g,h,i]perylene). The compounds of each ratio have the...
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The role of colloidal and particulate organic compounds in idenitrification and EBPR occurring in a full-scale activatedsludge system
PublicationThe aim of this study was to determine the immediate effects of slowly biodegradable substrates on the denitrification capability andphosphate release/uptake interactions for a full-scale biomass process from the ''Wschod'' wastewater treatment plant (WWTP) in Gdansk (Poland). Since it is hard to distinguish the slowlybiodegradable substrate in a direct way, a novel procedure based on batch experiments was developed and implemented....
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Chestnut-Derived Activated Carbon as a Prospective Material for Energy Storage
PublicationIn this work, we present the preparation and characterization of biomass-derived activatedcarbon (AC) in view of its application as electrode material for electrochemical capacitors. Porouscarbons are prepared by pyrolysis of chestnut seeds and subsequent activation of the obtainedbiochar. We investigate here two activation methods, namely, physical by CO2and chemical usingKOH. Morphology, structure and specific surface area (SSA)...
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Correlation between chemical composition and the presence of selected groups of bacteria in freshwater samples collected from Isfjorden and Billefjorde
PublicationThe average concentrations of pollutants in the arctic water, snow and the atmosphere are much lower than those observed in the temperate climate. Specific conditions occurring in the polar regions have apotential to accumulate the pollutants transported from other parts of the world. In this study, attempts were made to find a correlation between selected chemical components and the bacterial population. The analysis involved...
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Renewable natural resources as green alternative substrates to obtain bio-based non-isocyanate polyurethanes-review
PublicationCommercially available polyurethanes are synthesized by the polyaddition of diisocyanates with polyols and low molecular weight chain extenders. A new approach to polyurethanes synthesis is realized via non-isocyanate routes. Negative impacts of petroleum-based chemicals on the environment and human health as well as gradual reduction of fuel-based resources, which leads to an increase in their prices, are an incentive to looking...
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Phytoremediation—From Environment Cleaning to Energy Generation—Current Status and Future Perspectives
Publication:Phytoremediationis a technology based on the use of green plants to remove, relocate, deactivate, or destroy harmful environmental pollutants such as heavy metals, radionuclides, hydrocarbons, and pharmaceuticals. Under the general term of phytoremediation, several processes with distinctively different mechanisms of action are hidden. In this paper, the most popular modes of phytoremediation are described and discussed. A broad...
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Modeling bioaugmentation with nitrifiers in membrane bioreactors
PublicationBioaugmentation with nitrifiers was studied using two pilot-scale membrane bioreactors, with the purpose of assessing the suitability of state-of-the-art activated sludge models (ASMs) in predicting the efficiency of bioaugmentation as a function of operating conditions. It was demonstrated that the temperature difference between seeding and seeded reactors (ΔT) affects bioaugmentation efficiency. Experimental data were accurately...
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Scanning Electrone Microscope images of biochar produced from straw and wood chips
Open Research DataThis dataset contains scanning electron microscope images of two types of biochars derived from waste plant biomass: straw and wood chips. Imaging was performed using a scanning electron microscope, FEI Quanta FEG250. with a SE-ETD detector (secondary electron – Everhart-Thornley detector), using 20 kV accelerating voltage.
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Kontrola procesu wytwarzania biowodoru z gliceryny podczas fermentacji beztlenowej
PublicationProdukcja wodoru z biomasy z wykorzystaniem procesów biologicznych jest korzystną ekonomicznie alternatywą w porównaniu do otrzymywania wodoru np. na drodze zgazowania, pirolizy, czy przez rozkład biomasy w warunkach nadkrytycznych. Wśród biologicznych procesów otrzymywania wodoru, za najbardziej obiecującą uważa się ciemną fermentację wodorową, w której substraty organiczne są przekształcane bez udziału światła przez bakterie...
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High prevalence of Escherichia coli belonging to the B2+D phylogenetic group in inflammatory bowel disease
PublicationBACKGROUND: It is not clear which species of bacteria may be involved in inflammatory bowel disease (IBD). One way of determining which bacteria might be likely candidates is to use culture-independent methods to identify microorganisms that are present in diseased tissues but not in controls. AIMS: (1) To assess the diversity of microbial communities of biopsy tissue using culture-independent methods; (2) to culture the bacteria...
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Efficient Extraction of Fermentation Inhibitors by Means of Green Hydrophobic Deep Eutectic Solvents
PublicationThe methods for hydrogen yield efficiency improvements, the gaseous stream purification in gaseous biofuels generation, and the biomass pretreatment are considered as the main trends in research devoted to gaseous biofuel production. The environmental aspect related to the liquid stream purification arises. Moreover, the management of post-fermentation broth with the application of various biorefining techniques gains importance....
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Use of a wastewater recovery product (struvite) to enhance subtropical seagrass restoration
PublicationSeagrasses are in decline worldwide, and their restoration is relatively expensive and unsuccessful compared to other coastal systems. Fertilization can improve seagrass growth in restoration but can also release nutrients and pollute the surrounding ecosystem. A slow-release fertilizer may reduce excessive nutrient discharge while still providing resources to the seagrass's rhizosphere. In this study, struvite (magnesium ammonium...
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The role of slowly biodegradable organic compounds in a full-scale biological nutrient removal activated sludge systems
PublicationThe aim of this study was to determine the immediate effects of slowly biodegradable substrates on the denitrification capability and phosphate release/uptake interactions for a full-scale biomass process from two large wastewater treatment plants (WWTPs) located in the cities of Gdansk and Gdynia (northern Poland). Since it is hard to distinguish the slowly biodegradable substrate in a direct way, a novel procedure based on batch...
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Risks caused by microbiologically influenced corrosion in diesel fuel storage tanks
PublicationMicrobiologically influenced corrosion (MIC) poses serious problems for the petrochemical and refinery industries. Particularly favourable conditions for MIC arise in storage tanks and transmission pipelines for mixtures of diesel oil with the addition of a biocomponent (in Poland 7%). The best conditions for the development of MIC occur at the fuel-water interface, where microorganisms are provided with a source of food and water,...
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Effect of operating conditions on N 2 O production in an anammox sequencing batch reactor containing granular sludge
PublicationNitrous oxide (N2O) is one of the gases with the greatest impact in the atmosphere due to its persistence and significant contribution to the greenhouse effect. This study provides an insight into the dynamics of N2O production in wastewater nitrogen removal systems. A 10 L sequencing batch reactor containing enriched anammox biomass was subjected to different operational conditions, i.e., temperature, feed time, NO2 /NH4 þ ratio...
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Cyanobacterial occurence in the Gulf of Gdańsk (2008-2009)
Open Research DataEN: This dataset includes information about cyanobacterial occurrence in the Gulf of Gdansk (Southern Baltic) in 2008 and 2009. The presented data concern the basic physicochemical and biological parameters of the sampled waters (temperature, PSU, Chla), occurrence of diazotrophic cyanobacterial species from Nodularia, Aphanizomenon and Dolichospermum...
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Uwarunkowania polityki energetycznej województwa pomorskiego
PublicationWojewództwo pomorskie, leżące w północnej części Polski, ma charakter przemy - słowo-rolniczy. W 2013 r. zakłady przemysłowe położone na tym terenie wprowadziły do atmosfery 6900 ton gazów i 2800 ton pyłów. Największymi trucicielami są elektrociepłownie wytwarzające energię z wykorzystaniem węgla kamiennego i brunatnego. W dokumentach polityki energetycznej UE zapowiedziano zmniejszenie zużycia energii i emisji gazów cieplarnianych...
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Hydrogen Production via Biomethane Reforming in DBD Reactor
PublicationProduction of hydrogen from CH4:CO2 (70%:30%) mixture simulating dry biogas in a DBD reactor supplied with AC of 1.0-2.0 kHz or nanosecond negative pulses is presented. We have found that hydrogen production and methane conversion degree increase linearly with discharge power in the range of up to 50 W. Nanosecond voltage pulses are much more efficient in hydrogen production than sine AC voltage
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Potential applications of crude glycerol in polymer technology–Current state and perspectives
PublicationThe increasing use of bio-based fuels and fuel additives, among them biodiesel, causes significant surplus of crude glycerol on the market which creates new challenges in terms of its sustainable utilization. A lot of ways for the incorporation of this by-product into different branches of industry requires purification by expensive and complicated processes. Therefore, researchers are seeking for applications of untreated crude...
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Biosilica from sea water diatoms algae—electrochemical impedance spectroscopy study
PublicationHere, we report on an electrochemical impedance study of silica of organic origin as an active electrode material. The electrode material obtained from carbonized marine biomass containing nanoporous diatoms has been characterised by means of XRD, IR, SEM and EIS. Dif- ferent kinds of crystallographic phases of silica as a result of thermal treatment have been found. The electrode is electrochemically stable during subsequent cyclic...
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An observability and detectability analysis for non-linear uncertain CSTR model of biochemical processes
PublicationThe problem of proving observability/detectability properties for selected non-linear uncertain model of biochemical processes has been addressed in this paper. In particular, the analysis of observability/detectability in the face of parametric and unstructured uncertainty in system dynamics transformed into unknown inputs, and unknown initial conditions has been performed. Various sets of system measured outputs were taken into...
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The application of Monod equation to denitrification kinetics description in the moving bed biofilm reactor (MBBR)
PublicationIn 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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Zagospodarowanie ciepła odpadowego z biogazowych agregatów kogeneracyjnych w oczyszczalni ścieków = Waste heat utilisation from cogeneration set in sewage plant
PublicationW pracy opisano koncepcję współpracy biogazowych modułów kogeneracyjnych z niskotemperaturowym obiegiem parowym. Proponowana modernizacja pozwoliłaby na wykorzystanie entalpii fizycznej spalin, tym samym zwiększając sprawność urządzeń wytwarzających ciepło i energię elektryczną. Tego typu rozwiązanie umożliwiłoby częściowe pokrycie zapotrzebowania własnego na energię elektryczną, generując oszczędności w przedsiębiorstwie. W artykule...
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Zagospodarowanie ciepła odpadowego z biogazowych agregatów kogeneracyjnych w oczyszczalni ścieków
PublicationW pracy opisano koncepcję współpracy biogazowych modułów kogeneracyjnych z niskotemperaturowym obiegiem parowym. Proponowana modernizacja pozwoliłaby na wykorzystanie entalpii fizycznej spalin, tym samym zwiększając sprawność urządzeń wytwarzających ciepło i energię elektryczną. Tego typu rozwiązanie umożliwiłoby częściowe pokrycie zapotrzebowania własnego na energię elektryczną, generując oszczędności w przedsiębiorstwie. W artykule...
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Metodyka rozdzielania i oznaczania lotnych inhibitorów fermentacji w brzeczkach fermentacyjnych ciemnej fermentacji, techniką GC-MS
PublicationW pracy przedstawiono opracowaną w wyniku badań metodykę identyfikacji i oznaczania inhibitorów fermentacji w brzeczkach fermentacji ciemnej z biomasy ligno-celulozowej, z wykorzystaniem ekstrakcji ciecz-ciecz w sprzężeniu z chromatografią gazową ze spektrometrem mas (LLE-GC-MS). W ramach badań dokonano doboru korzystnych warunków ekstrakcji ciecz-ciecz, w tym: pH, objętości rozpuszczalnika ekstrakcyjnego, czasu ekstrakcji oraz warunków...
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Zaawansowane technologie pozyskiwania energii - zadanie: Opracowanie zintegrowanych technologii wytwarzania paliw i energii z biomasy; odpadów rolniczych i innych
ProjectsProject realized in Faculty of Chemistry from 2010-07-01
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eBIOCOOL Energy BIOmass CULtivation on marginal soils enhanced with biochar amendments fertilized with by-product in order to reduce nutrients leaching
ProjectsProject realized in Department of Sanitary Engineering according to DEC-3/2022/IDUB/II.2/Sc agreement from 2022-08-25
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PU-WC Manufacturing and properties of polyurethane-wood composites (PU-WC) using bio-polyols from the biomass liquefaction process
ProjectsProject realized in Gdańsk University of Technology according to UMO-2023/49/N/ST11/01890 agreement from 2024-06-27
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Electricity generation from rapeseed straw hydrolysates using microbial fuel cells
PublicationRapeseed straw is an attractive fuel material for microbial fuel cells (MFCs) due to its high content of carbohydrates (more than 60% carbohydrates). This study has demonstrated that reducing sugars can be efficiently extracted from raw rapeseed straw by combination of hydrothermal pretreatment and enzymatic hydrolysis followed by utilization as a fuel in two-chamber MFCs for electrical power generation. The most efficient method...
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Phytoremediation of heavy metals by white cabbage
PublicationPhytoremediation is regarded as the cheapest and environmentally most friendly technology for cleaning up soil. The most widespread and most profitable technique is phytoextraction, used mainly for removing heavy metals and radioactive elements from thesoil. Over 400 plant species have been identified as natural metal hyperaccumulators representing about 0.2 % of all angiosperms. Unfortunately, most of these plants are characterised...
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A review on homogeneous and heterogeneous catalytic microalgal lipid extraction and transesterification for biofuel production
PublicationExtracting lipids from microalgal biomass presents significant potential as a cost-effective approach for clean energy generation. This can be achieved through the chemical conversion of lipids to produce fatty acid methyl esters via transesterification. The extraction mainly involves free fatty acids, phospholipids, and triglycerides, and requires less energy, making it an attractive option for satisfying the growing demand for...
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Digestate Quality Originating from Kitchen Waste
PublicationThis paper examines the influence of biomass directed to anaerobic digestion on the quality of digestate, specifically focusing on the presence of undesirable substances, such as plastics, including biodegradable ones. It analyses the susceptibility of selected bioplastics to degradation and addresses the problem of reliable identification of microplastics in both feedstock—directed to anaerobic digestion—and produced digestate....
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The Influence of Substitution of a Phosphorus-Containing Polyol with the Bio-polyol on the Properties of Bio-based PUR/PIR Foams
PublicationIn this work, effects of incorporating of a phosphorus-containing polyol into rigid polyurethane/polyisocyanurate foams’ formulations developed with use of two different bio-based polyols, derived from crude glycerol or liquefied cellulose were examined. The bio-polyol derived from crude glycerol was synthesized via two-step process from crude glycerol and castor oil, whereas the bio-polyol derived from liquefied cellulose was...
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Effects of different external carbon sources and electron acceptors on interactions between denitrification and phosphorus removal in BNR processes
PublicationThe effects of two different external carbon sources (acetate, ethanol) and electron acceptors (dissolved oxygen, nitrate and nitrite) were investigated under aerobic and anoxic conditions with non-acclimated process biomass from a full-scale biological nutrient removal activated sludge system. When acetate was added as an external carbon source, phosphate release was observed even in the presence of electron acceptors. The release...
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Modeling sequencing batch reactor operational conditions depending on oxygen concentration
PublicationSequencing batch reactors (SBR) can be used as a fill-and draw activated sludge system for wastewater treatment with considerable operating flexibility and the possibility to conduct experiments under standard conditions and extreme case scenarios. Mathematical modeling and computer simulations provide an opportunity to implement existing wastewater processes in modeling software and evaluate different modifications at low costs...
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Modifications to the anaerobic digestion model no. 1 (ADM1) for enhanced understanding and application of the anaerobic treatment processes – A comprehensive review
PublicationAnaerobic digestion (AD) is a promising method for the recovery of resources and energy from organic wastes. Correspondingly, AD modelling has also been developed in recent years. The International Water Association (IWA) Anaerobic Digestion Model No. 1 (ADM1) is currently the most commonly used structured AD model. However, as substrates become more complex and our understanding of the AD mechanism grows, both systematic and specific...
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„Opracowanie bezodpadowej technologii produkcji biopaliwa rzepakowego na potrzeby indywidualnego gospodarstwa rolnego”
PublicationCelem niniejszej pracy było opracowanie oraz wszechstronne przeanalizowanie technologii produkcji estrów metylowych oleju rzepakowego w warunkach indywidualnego gospodarstwa rolnego, uwzględniającej zagospodarowanie w miejscu ich wytwarzania głównych odpadów z procesu produkcji biopaliwa – makuchu rzepakowego oraz fazy glicerynowej. Zaprojektowano i zrealizowano w skali domowej cykl produkcyjny, którego produktami były: pełnowartościowe,...