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Removal of uranium(VI) from aqueous solution by rice husk

Xia L., Li R., Xiao Y., Zheng W., Tan K.

Environment Protection Engineering

2017

Vol. 43, nr 4

41--53

Basic aspects of uranium adsorption by rice husk have been investigated. The influences of various experimental parameters such as pH, time, adsorbent dosage, rice husk size, temperature and various concentrations of uranium on uptake were evaluated. The thermodynamics and kinetics of adsorption were analyzed by FT-IR and SEM. The adsorption capacity for uranium on rice husk increased upon increasing initial concentration of uranium and temperature, while decreased with the increase of the amount of rice husk. Maximum uranium adsorption was observed at pH = 3 and particle size between 120 μm and 150 μm. Adsorption equilibrium was achieved within 60 min. At 25 °C, the saturated adsorption capacity qmax was up to 15.14 mg/g when the initial concentration of uranium ranged from 10 to 400 mg/dm3. The adsorption of uranium followed Langmuir adsorption isotherm and according to quasi-second order kinetic equation. The calculated values of ΔH°, ΔS°, and ΔG° indicated that the biosorption process was endothermic and spontaneous. Based on FT-IR spectra it may be concluded that hydroxyl, carbonyl, P–O and Si=O groups are the main active sites.

Public engagement in science - education through the use of 3D technology applied in tomography

Tan K., Babout L., Janaszewski M.

Zeszyty Naukowe. Elektryka / Politechnika Łódzka

2010

z. 121

173-181

This paper summarizes one of the knowledge transfer scheme under DENIDIA Framework XI funded project at the Computer Engineering Department in the field of public engagement and 3D stereoscopic projection system. It will provide insight of how public engagement is important in terms of inspiring young students into science and engineering, particular computer scientist area. With the use exciting technology such as 3D stereoscopic projection system, it will make public engagement activiteis far more interesting than just ordinary 2D PowerPoint presentations.

Artykuł jest podsumowaniem projektu dotyczącego transferu wiedzy w ramach grantu DENIDIA (ang. Development of Excellence in Non Invasive Diagnostic System for Industrial and Scientific Application) w dziedzinie promocji nauki w społeczeństwie z wykorzystaniem nowoczesnych technik stereoskopowej wizualizacji 3D. Grant realizowany jest w Katedrze Informatyki Stosowanej Politechniki Łódzkiej. Autorzy podkreślają jak ważna jest promocja nauki w celu inspiracji i zainteresowania studentów inżynierią a w szczególności inżynierią komputerową. Nowoczesne technologie, popularne wśród młodzieży jak stereoskopowa wizualizacja 3D pobudzają wyobraźnię i otwierają nowe możliwości w dziedzinie promocji nauki.