POSTER SUBMISSION CATEGORY

Renewable hydrogen synthesis from catalytic steam gasification of furniture waste using nickel catalysts supported on modified CeO2

Young-Kwon Park / University of Seoul / South Korea
YOUNG-KWON PARK / UNIVERSITY OF SEOUL / SOUTH KOREA
ABID FAROOQ / UNIVERSITY OF SEOUL / SOUTH KOREA

• The steam gasification of furniture waste was studied to produce biohydrogen
• Ni/CeO2-ZrO2 catalyst showed the highest hydrogen selectivity (82 vol%)
• Ce0.5Zr0.5O2-δ solution accelerated the water gas shift and carbon gasification
• Zero coke formation was observed for Ni/CeO2 -ZrO2

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HYDROGEN PRODUCTION BY PHOTOCATALYTIC DECOMPOSITION OF BENZENE USING LIQUID PHASE PLASMA

S.-C. Jung / / South Korea
K.-H. CHUNG / SUNCHON NATIONAL UNIVERSITY / SOUTH KOREA
S.-C. JUNG / SUNCHON NATIONAL UNIVERSITY / SOUTH KOREA

A photocatalytic decomposition of benzene using liquid phase plasma (LPP) and photocatalyst is proposed. This reaction produced hydrogen as a gaseous product and simultaneously produced carbon black. Liquid benzene was decomposed by photocatalytic reaction using the LPP. The irradiation effect of the LPP applied as a light source in relation to the decomposition of benzene and hydrogen generation was investigated. Hydrogen production and toluene removal have been characterized from photocatalytic decomposition of benzene on visible light photocatalysts. Effect of irradiation of the LPP was discussed concerning with the hydrogen production.
Simultaneous benzene decomposition and H2 evolution arose by photocatalytic decomposition using LPP. Hydrogen was produced from the photocatalytic decomposition of benzene with LPP irradiation. Decomposition of benzene and hydrogen evolution was increased by the metal loading on the TiO2 surface. Fine carbon black was produced simultaneously with hydrogen generation in the photocatalytic decomposition of benzene by LPP irradiation

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FACILE FABRICATION OF LANTHANUM DOPED TITANIUM DIOXIDE PHOTOCATALYSTS BY PLASMA IN LIQUID PROCESS AND ITS PHOTOCATALYTIC ACTIVITY ON DEGRADATION OF DICLOFENAC

H. Lee / / South Korea
H. LEE / SUNCHON NATIONAL UNIVERSITY / SOUTH KOREA
C.S. YOU / SUNCHON NATIONAL UNIVERSITY / SOUTH KOREA
S.C. JUNG / SUNCHON NATIONAL UNIVERSITY / SOUTH KOREA

Lanthanum doped TiO2 photocatalyst was facilely fabricated using plasma in liquid process to enhance the photocatalytic activity by reducing band gap energy and electron-hole recombination. The physicochemical properties of fabricated photocatalyst were characterized by various methods. The amount of lanthanum element in fabricated photocatalysts was influenced by initial concentration of precursor, and the lanthanum elements were present in the form of oxides. The photocatalytic performance of photocatalysts were evaluated by degradation rate of diclofenac, the waste pharmaceutical ingredients. The lanthanum doped TiO2 photocatalysts exhibited higher photocatalytic activity than bare TiO2 under UV and blue light condition. In particular, the photocatalytic activity of lanthanum doped TiO2 photocatalysts was remarkably improved under blue light.

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AVOIDING SHADING ON PHOTOVOLTAIC PANELS IN BUILDING INTEGRATED PHOTOVOLTAICS (BIPV)

Diego Granados lopez / Burgos / Spain
DIEGO GRANADOS LÓPEZ / BURGOS / SPAIN
DAVID GONZALEZ PEÑA / BURGOS / SPAIN
ANA GARCÍA RODRÍGUEZ / BURGOS / SPAIN
SOL GARCÍA RODRÍGUEZ / BURGOS / SPAIN

The integration of photovoltaic (PV) panels on non-used buildings surfaces allows the electricity distributed generation near the consumption places and the electrification of remote areas avoiding the transportation cost and electrical losses. The current study highlights the importance of carrying out a prior analysis of the nearest area to get a correct implementation of the PV panels avoiding the shadows produced by the close obstacles. A recently refurbished public building has been analyzed: the IndUVA building of the University of Valladolid, Spain. Although the current design offers good energy production, the consideration of the roof surface in the design could have improved the electricity production up to 37%. The roof surface presents some advantages over the facade surfaces: easier and cheaper implementation of the PV panels, and also, higher production than the south-oriented surface in summer.

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TWO-STEP SYNTHESIS OF WOLLASTONITE FROM ALUMINIUM FLUORIDE RICH SILICA-GEL WASTE

A. Gineika / / Lithuania
ANDRIUS GINEIKA / KAUNAS UNIVERSITY OF TECHNOLOGY / LITHUANIA
TADAS DAMBRAUSKAS / KAUNAS UNIVERSITY OF TECHNOLOGY / LITHUANIA
KESTUTIS BALTAKYS / KAUNAS UNIVERSITY OF TECHNOLOGY / LITHUANIA

In this study, the formation of wollastonite (CaSiO3) using two-step synthesis from CaO and AlF3-rich silica gel waste was investigated. The molar ratio of calcium oxide and silica+alumina+fluoride in the initial mixture was equal to 1. The first step – hydrothermal synthesis was carried out in stirred suspension at 200 °C for 12 h where water to solid material ratio W/S was equal to 20. It was determined that tobermorite was dominant compound with admixtures of katoite and cuspidine in the synthesis product. In addition, under these synthesis conditions portlandite and aluminium fluoride were fully reacted. The second step – calcination was carried out at 900 °C for 1 h. It was found that during calcination tobermorite and other calcium silicates hydrates recrystalized to wollastonite and larnite, while cuspidine remained stable.

Keywords: wollastonite, AlF3, calcium silicate, two-step synthesis

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MODELING THE HUMIDITY PHASE CHANGE IN LARGE SCALE LIQUID HYDROGEN SPILLS

Stella Giannissi / Environmental Research Laboratory, National Centre for Scientific Research Demokritos / Greece
STELLA GIANNISSI / ENVIRONMENTAL RESEARCH LABORATORY, NATIONAL CENTRE FOR SCIENTIFIC RESEARCH DEMOKRITOS, 15341 AGHIA PARASKEVI / GREECE
A .G. VENETSANOS / ENVIRONMENTAL RESEARCH LABORATORY, NATIONAL CENTRE FOR SCIENTIFIC RESEARCH DEMOKRITOS, 15341 AGHIA PARASKEVI / GREECE
G. MOMFERATOS / ENVIRONMENTAL RESEARCH LABORATORY, NATIONAL CENTRE FOR SCIENTIFIC RESEARCH DEMOKRITOS, 15341 AGHIA PARASKEVI / GREECE
N. MARKATOS / NATIONAL TECHNICAL UNIVERSITY OF ATHENS, HEROON POLYTECHNIOU / GREECE

Hydrogen is considered the future fuel for neutral climate change. Due to its low volumetric energy content
it is commonly stored in liquid state. In case of an accidental leak of liquid hydrogen (LH2) complex
phenomena take place. One of these phenomena that can influence the vapour cloud dispersion and its
subsequent safety features is the liquefaction and even freezing of ambient humidity. This work aims to
investigate the humidity effect on mixture dispersion resulting from LH2 large scale spills and on the safety
distances. For that purpose CFD simulations are performed using the homogeneous mixture model and the
Raoult’s law for the phase distribution of the multicomponent, multiphase system. The simulations are based
on the NASA-6 experiment related to LH2 vertical spill in open obstructed environment. Several humidity
levels are tested and the effect of modelling the humidity phase change is examined.

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ESTIMATION OF HOURLY SOLAR RADIATION USING ENHANCED ANGSTROM MODEL BY K-MEANS CLUSTERING

Benmouiza Mohammed Said / University of Laghouat, Algeria. / Algeria
BENMOUIZA MOHAMMED SAID / UNIVERSITY AMAR TELIDJI OF LAGHOUAT / ALGERIA
HACHANI LAKHDER / UNIVERSITY AMAR TELIDJI OF LAGHOUAT / ALGERIA
BENMOUIZA KHALIL / UNIVERSITY AMAR TELIDJI OF LAGHOUAT / ALGERIA

Recent The application of solar energy at a given site requires the complete and detailed knowledge of solar radiation of the site. This is generally easy when the site is provided with a radiometric measurement station running regularly for several years. However, in most areas of the world, these measurements are not easily available due to financial, technical, or institutional limitations. Estimation models are used to determine the amount of solar radiation at given place, among them Angstrom model that used a linear relation to determine the amount of ground solar radiation based on sunshine hours. However, this model suffers from drawbacks because it does not take into consideration the seasonal variations and the nonlinearity of the measured data. Hence, we propose in this paper a clustering method to enhance the old Angstrom-Prescott model in order to get an accurate estimation model. The proposed idea consists of using clustering k-means algorithm to classify the measured sunshine hours and reconstructing a new Angstrom model parameter based on the results of clusters. The proposed model is tested and validated for the Region of Oran, Algeria.

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Forecasts and Conditions for The Development of Power Technologies In Poland

Slawomir Dykas / The Silesian University of Technology / Poland
PIOTR WIŚNIEWSKI / THE SILESIAN UNIVERSITY OF TECHNOLOGY / POLAND
SŁAWOMIR DYKAS / THE SILESIAN UNIVERSITY OF TECHNOLOGY / POLAND

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MATERIALS FOR ORGANIC SOLAR CELLS: AN INTERPLAY BETWEEN MOLECULAR CONFORMATION, SUBSTITUENT EFFECT AND SINGLET FISSION PROPENSITY

Gergana Kostadinova / Sofia University / Bulgaria
GERGANA KOSTADINOVA / SOFIA UNIVERSITY / BULGARIA
RUMEN LYAPCHEV / SOFIA UNIVERSITY / BULGARIA
ALIA TADJER / SOFIA UNIVERSITY / BULGARIA
JOANNA STOYCHEVA / SOFIA UNIVERSITY / BULGARIA
ILIA KICHEV / SOFIA UNIVERSITY / BULGARIA
JULIA ROMANOVA / SOFIA UNIVERSITY / BULGARIA

Poster and video

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A novel biosurfactant and its biotechological potential

Tiago Silva / LNEG- Laboratório Nacional de Energia e Geologia / Portugal
T.P. SILVA / LNEG- LABORATÓRIO NACIONAL DE ENERGIA E GEOLOGIA / PORTUGAL
S.M. PAIXÃO / LNEG- LABORATÓRIO NACIONAL DE ENERGIA E GEOLOGIA / PORTUGAL
J. TAVARES / LNEG- LABORATÓRIO NACIONAL DE ENERGIA E GEOLOGIA / PORTUGAL
L. ALVES / LNEG- LABORATÓRIO NACIONAL DE ENERGIA E GEOLOGIA / PORTUGAL

Biosurfactants are surface active compounds, possessing both hydrophilic and hydrophobic properties, which allow them to reduce the surface tension between two immiscible liquids, such as water and oil. These compounds have gained the interest of many industries, due to their characteristics, such as, biodegradability, low toxicity, and antibiotic and antioxidant activities. Thus, they are now seen as added-value byproducts, which should be valued in a biorefinery setting. Gordonia alkanivorans strain 1B is a biodesulfurizing bacterium that naturally produces biosurfactants, however there is still very little information on how they are produced and their properties. In this work, different carbon sources were used to grow the bacterium and induce biosurfactant production. The results showed that, even without the use of hydrophobic inducers strain 1B could produce a crude extract with both biosurfactant and bioemulsifier activities. It was clear that, the different inducers not only affected the amount of surfactant produced, but also its properties. When using olive oil as an inducer, the surfactant mostly acted on the hydrophobic layer, and when using sucrose, or a complex culture medium, such as Yeast Malt Broth, the surfactant affected mainly the aqueous layer. This reinforces the importance of studying induction conditions, since different properties can lead to different applications.

ACKNOWLEDGEMENTS
This work was financed by national funds through FCT (Fundação para a Ciência e a Tecnologia) in the scope of the project GreenFuel (PTDC/EAM-AMB/30975/2017). In addition, this research was carried out within the Biomass and Bioenergy Research Infrastructure (BBRI) - LISBOA-01-0145-FEDER-022059, supported by Operational Programme for Competitiveness and Internationalization (P2020), by Lisbon Portugal Regional Operational Programme (Lisboa 2020) and by North Portugal Regional Operational Programme (Norte 2020) under the Portugal 2020 Partnership Agreement, through the European Regional Development Fund (ERDF). Tiago P. Silva also acknowledges FCT for his PhD financial support (SFRH/BD/104977/2014).

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SINGLET FISSION CHROMOPHORES FOR ORGANIC SOLAR CELLS: CHEMICAL DATABASE FROM QUANTUM-CHEMICAL CALCULATIONS

Lyuben Borislavov / University of Sofia / Bulgaria
LYUBEN BORISLAVOV / UNIVERSITY OF SOFIA / BULGARIA
MIROSLAVA NEDYALKOVA / UNIVERSITY OF SOFIA / BULGARIA
RUMEN LYAPCHEV / UNIVERSITY OF SOFIA / BULGARIA
GERGANA KOSTADINOVA / UNIVERSITY OF SOFIA / BULGARIA
JOANNA STOYCHEVA / UNIVERSITY OF SOFIA / BULGARIA
ILIA KICHEV / UNIVERSITY OF SOFIA / BULGARIA
VESSELIN PETROV / UNIVERSITY OF SOFIA / BULGARIA
ALIA TADJER / UNIVERSITY OF SOFIA / BULGARIA
JULIA ROMANOVA / UNIVERSITY OF SOFIA / BULGARIA

SINGLET FISSION CHROMOPHORES FOR ORGANIC SOLAR CELLS: CHEMICAL
DATABASE FROM QUANTUM-CHEMICAL CALCULATIONS

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OBTAINING ENERGY BY USING MDF-WOOD CHIP

Gürsel Çınar / Erciyes Üniversitesi / Turkey

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THE COMPARISON OF THE EFFICIENCY OF LOW-PRESSURE MERCURY VAPOUR LAMP AND XENON EXCIMER LAMPIN THE VUV PHOTOLYSIS OF SULFONAMIDE ANTIBIOTICS

Luca Farkas / University of Szeged / Hungary

For the VUV(172 nm) light source, the equilibrium concentration of H2O2 measured in Milli-Q water is more than 50 times higher than that of a low-pressure mercury vapor lamp (UV / VUV(185 nm) despite the fact that the proportion of photon fluxes is only around 5.
During UV/VUV(185nm) photolysis of sulfonamides, the contribution of UV(254 nm) is significant
tap water had a positive effect in some cases (role of UV254 nm?)
Reverse osmosis-treated industrial and biologically treated domestic wastewater had a similar negative effect on UV/VUV(185 nm) photolysis of sulfonamides
During VUV(172 nm) photolysis of sulfonamides, clearly biologically treated wastewater reduced the transformation rate the best.

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SYNTHESIS OF BISMUTH-OXYHALIDE COMPOSITE PHOTOCATALYSTS, AND THEIR APPLICATION USING UV AND VISIBLE LED LIGHT SOURCES

Máté Náfrádi / University of Szeged / Hungary

- BiOI, BiOCl photocatalysts, and their composites with different molar ratios has been prepared and tested using UV and visible LED light sources
- the adsorption and transformation of methyl orange was investigated under UV and visible irradiation
- the reusability and ecotoxicity of the catalysts was also investigated

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Effect of various aero thermal conditions on the drying kinetics of some building materials using solar drying, the case of ordinary earth mortar

M. Kouhila / Cadi Ayyad University / Morocco

Moisture is one of the most deteriorating factors of building materials. The deteriorating effect of moisture occurs
mainly during the drying phase, not in the wetting phase. Environmental factors, such as air temperature, air humidity,
and air velocity affect drying materials. A solar dryer operated in forced convection was used to explore the drying
performance of Moroccan Earth Mortar (ordinary earth mortar). Experimental measurement was investigated at
four temperatures (20, 30, 40 and 45°C) for a fixed air velocity of 0.20 m/s. Results of drying curve shape showed
only the presence of phase 2 of drying curves which corresponds to the falling drying rate period. The rate of
moisture content by dry basis varied from 9 to 13.8 % (d.b) and increased when the temperature increased as well as
the drying rate.

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EFFECT OF SOLAR RADIATION ON EXERGY ANALYSIS IN THERMOCHEMICAL HYDROGEN PRODUCTION FROM PARABOLIC SOLAR SYSTEM

Prof. Dr. Gamze Genç / Erciyes University / Turkey

EFFECT OF SOLAR RADIATION ON EXERGY ANALYSIS IN THERMOCHEMICAL HYDROGEN PRODUCTION FROM PARABOLIC SOLAR SYSTEM

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