The parameters which influence the removal of different zinc (Zn) species: Zn2 +, Zn(II)–EDTA and Zn(II)–citrate from aqueous solutions by nanoparticles of zerovalent iron (nZVI) were investigated at environmental relevant pH values. Untreated, surface modified and silicafume supported nZVI were applied at different iron loads and contact times to Zn solutions, which were buffered to pH 5.3, 6.0 and 7.0. The results revealed that pH, the type of nZVI, the iron load, the contact time, and the Zn species all had a significant influence on the efficiency of removal. Zn2 +, Zn(II)–EDTA and Zn(II)–citrate were the most effectively removed from aqueous solutions by untreated nZVI. Zn2 + removal was governed mainly by adsorption onto precipitated iron oxides. Complete removal of Zn2 + and Zn(II)–citrate was obtained at all pH values investigated. The removal of strong Zn(II)–EDTA complex was successful only at acidic pH, which favored degradation of Zn(II)–EDTA. Consequently, the released Zn2 + was completely removed from the solution by adsorption onto iron oxides.
F.05 Ability to launch new technological development cycle
COBISS.SI-ID: 27431207In the book, one of the few in Slovenian language, the basics about earthquakes and their impact on masonry buildings are presented. Masonry materials and testing, as well as the principles and ruled of earthquake resistant masonry construction are discussed. Fundamentals of limit states design and equations for seismic resistance verification of masonry walls and buildings are explained, supported by experimental background of the presented methods. An important part of the book is devoted to the problems of seismic repair and strengthening. Traditional and contemporary materials and methods are presented, whose efficiency has been verified by in-situ and laboratory experiments.
F.04 Increase of the technological level
COBISS.SI-ID: 248745472A new bridge weigh-in-motion (WIM) algorithm is developed which makes use of strain sensors at multiple longitudinal locations of a bridge to calculate axle weights. The optimisation procedure at the core of the proposed algorithmseeks to minimise the difference between static theory and measurement, a procedure common in the majority of bridge WIM algorithms. In contrast to the single unique value calculated for each axle weight in common Bridge WIM algorithms, the new algorithm provides a time history for each axlebased on a set of equations formulated for each sensor at each scan. Studying the determinant of this system of equations, those portions of the time history of calculated axle weights for which the equations are poorly conditioned are removed from the final reckoning of results. The accuracy of the algorithm is related to the ability to remove dynamics and the use of a precise influence line. These issues are addressed through the use of a robustmoving average filter and a calibration procedure based on using trucks from ambient traffic. The influence of additional longitudinal sensor locations on the determinant of the system of equations is discussed. Sensitivity analyses are carried out to analyse the effect of a misread axle spacing or velocity on the predictions, and as a result, the algorithm revealsan ability to identify potentially erroneous predictions. The improvement in accuracy of the calculated axle weights with respect to common approaches is shown, first using numerical simulations based on a vehicle-bridge interaction finite-element model, and second using experimentaldata from a beam-and-slab bridge in Slovenia.
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 1938535Test Parcel of copper and bentonite was exposed for six years in the Äspo HardRock Laboratory, which offers a realistic environment for the conditions that will prevail in a deep repository for high-level radioactive waste disposal in Sweden. In January 2007 electric resistance (ER) sensors of pure copper were also installed in test package from deep repository. The results from the ER measurements of corrosion rate of copper from start in January 2007 to April 2011 are presented in this report. In summary, the measurements have shown that the corrosion rate of pure copper exposed to an oxic bentonite/saline groundwater environment can be followed by ER and electrochemical techniques, and corrosion rate decreases slowly with time to very low values ((1 [micro]m/year).
F.01 Acquisition of new practical knowledge, information and skills
COBISS.SI-ID: 1980519The goal of the project was to contribute in the conversion of renewable energy into useful forms for specific applications and to significantly improve the energy performance of the existing high-rise buildings. The main input was in newly developed integrated techno-economic concepts for retrofit with three new business models and four technical concepts for new and existing components based on five new renewable energy sources components: Transparent solar thermal façade collectors (patented in 2006), Glazing unit with building integrated PV (patented in 2006), Façade-integrated solar-thermal vacuum tube collectors, Unglazed opaque façade collectors with new durable coatings, Façade-integrated ventilation concept (patented in 2007). The practical feasibility was successfully demonstrated in two pilot buildings, one in Spain and another one in Slovenia. The concepts were assessed with LCA methodology. A catalogue of aesthetic, constructive and technical solutions was edited and a decision support tool providing practical and in-depth information for planners was developed.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 2025831