ADSORPTION REMOVAL OF U(VI) FROM AQUEOUS SOLUTIONS USING REDUCED GRAPHENE OXIDE BASED INVERSE SPINEL NICKEL FERRITE NANOCOMPOSITE AS SORBENT (REMVAL OF U(VI) BY REDUCED GRAPHENE OXIDE BASED INVERSE SPINEL NICKEL FERRITE)
Published In: 3RD INTERNATIONAL CONFERENCE ON ADVANCES IN BIO-INFORMATICS AND ENVIRONMENTAL ENGINEERING
Author(s): JAE-KYU YANG , JANARDHAN REDDY KODURU , LAKSHMI PRASANNA LINGMADINNE , YOON-YOUNG , YU-LIM CHOI
Abstract: The synthesized rGONF was characterized using X-ray diffraction (XRD), Fourier transform-infrared resonance (FT–IR), and X-ray photoelectron (XPS) spectroscopes. The morphology, the surface area and pore volume of GONF was evaluated by scanning electron microscopy (SEM) and BET analysis, respectively. rGONF was successfully used for the removal of U(VI) by batch adsorption techniques. Batch kinetics studies revealed the sorption of U(VI) onto rGONF was well described by pseudo-second-order equation. The sorption equilibrium data of U(VI) was well tune to the Langmuir isotherm model than the Freundlich and Temkin’s isotherm models. Hence, the sorption of U(VI) onto rGONF occurred through monolayer chemisorptions on homogeneous surface of rGONF. The maximum adsorption capacities (Qmax) of the rGONF for U(VI) is 200 mg/g. Thermodynamic studies reveal that the sorption was increased as increase temperature from 298 to 328 K, indicates the chemisorptions. The overall obtained results demons
- Publication Date: 11-Dec-2015
- DOI: 10.15224/978-1-63248-078-1-68
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AN ESTIMATE OF THE SHORT-TERM LOCAL CLIMATIC CHANGES BY MEASURING THE AIR TEMPERATURE, AIR PRESSURE AND HUMIDITY
Published In: 3RD INTERNATIONAL CONFERENCE ON ADVANCES IN BIO-INFORMATICS AND ENVIRONMENTAL ENGINEERING
Author(s): BORISLAV YURUKOV
Abstract: This paper presents an assessment of local climate changes in Southwestern part of Bulgaria, specially region of Blagoevgrad. In this study was conducted research and measurement of weather parameters such as air temperature, humidity and air pressure. The analysis is carried out for a month of July in the period of last five years (2011- 2015). Hardware is unchanged and the main basic sensors are the same throughout the study period. Weather station used for this scientific research was WS-2355. In practice, the changes are analyzed and given an assessment of climate change in the past five years. An attempt to found new trends and identify dependencies for predicting the next climatic parameters. Relatively few data on such changes still can not give an unambiguous assessment of climate change, but the collection of local data is a step towards solving this scientific problem.
- Publication Date: 11-Dec-2015
- DOI: 10.15224/978-1-63248-078-1-06
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- Downloads: 0