Authors:Giacomo Perfetti, Thibault Alphazan, W. J. Wildeboer, and Gabrie M. H. Meesters
water and T g is fundamental for the evaluation of agglomeration–stickiness ability of the coating agent, the design of drying methods as well as the selection of adequate storage conditions for the coated particles. In this context, the sorption
Authors:Francielle Q. Soares, Bruna F. Alvarenga, Marçal A. Ruggiero, Monise C. Casanova, Eliana M. Lima, Denilson Rabelo, and Andréa R. Chaves
Spectral Imaging (Peabody, MA, USA).
Nitrogen Adsorption Measurements
The specific surface area and pore size distribution measurements were performed using a Micrometrics ASAP 2010 nitrogen sorption porosimeter. Analysis
Authors:M. Barczak, M. Oszust-Cieniuch, P. Borowski, Z. Fekner, and E. Zięba
XRD patterns were recorded using a Seifert RTG DRON-3 diffractometer (CuKα radiation) with 0.02º step and 10 s time step over a range of 0.5º < 2θ < 5.0º at RT. Nitrogen sorption isotherms
Authors:Arezoo Hassan Noori, Mohammad Rezaee, Maryam Kazemipour, and Hossein Ali Mashayekhi
4 , are good candidates for magnetic carrier technology considering the following main advantages: (1) MNPs can be produced in large quantity using a simple method, (2) it can be expected that their sorption capacity is high due to their large
Authors:Dariusz Szychowski, Barbara Pacewska, Grzegorz Makomaski, Janusz Zieliński, Wiesława Ciesińska, and Tatiana Brzozowska
decomposition temperatures of carbonizates produced from pitch–polymer compositions and the evaluation of their sorption abilities. The additive of poly(ethylene terephthalate) and phenol–formaldehyde resin caused the increase of thermal resistance of the pitch
Authors:Erik de Blois, Ho Chan, Kamalika Roy, Eric Krenning, and Wouter Breeman
PET with 68Ga from the TiO2- or SnO2- based 68Ge/68Ga generators is of increasing interest for PET imaging in nuclear medicine. In general, radionuclidic purity (68Ge vs. 68Ga activity) of the eluate of these generators varies between 0.01 and 0.001%. Liquid waste containing low amounts of 68Ge activity is produced by eluting the 68Ge/68Ga generators and residues from PET chemistry. Since clearance level of 68Ge activity in waste may not exceed 10 Bq/g, as stated by European Directive 96/29/EURATOM, our purpose was to reduce 68Ge activity in solution from >10 kBq/g to <10 Bq/g; which implies the solution can be discarded as regular waste. Most efficient
method to reduce the 68Ge activity is by sorption of TiO2 or Fe2O3 and subsequent centrifugation. The required 10 Bq per mL level of 68Ge activity in waste was reached by Fe2O3 logarithmically, whereas with TiO2 asymptotically. The procedure with Fe2O3 eliminates ≥90% of the 68Ge activity per treatment. Eventually, to simplify the processing a recirculation system was used to investigate 68Ge activity sorption on TiO2, Fe2O3 or Zeolite. Zeolite was introduced for its high sorption at low pH, therefore 68Ge activity containing waste could directly be used without further interventions. 68Ge activity containing liquid waste at different HCl concentrations (0.05–1.0 M HCl), was recirculated at 1 mL/min. With Zeolite
in the recirculation system, 68Ge activity showed highest sorption.
Authors:M. Mallah, M. Ghannadi Maragheh, A. Badiei, and R. Habibzadeh Sbo
In the present work, results of γ-irradiation on normal and functionalized SBA-15 by aurintricarboxylic acid have been reported.
Characterization of normal and functionalized SBA-15 particles before and after γ-irradiation was carried out using Fourier-transform
infrared technique. Aurintricarboxylic acid ligand connected to SBA-15 was also analyzed using UV/Vis spectrophotometer. The
modified sorbent was then used as a new sorbent for separation of trace amounts of praseodymium and lutetium ions from nuclear
waste waters in batch techniques. Based on the results of distribution coefficients determination, and investigation of sorption
process in various conditions, the parameters were optimized for separation lanthanides. It can be concluded that the functionalized
SBA-15 is a promising sorbent for praseodymium and lutetium cations.
. ( 2006 ), Sorption properties for different types of molecular sieve and their influence on optimum dehumidification performance of desiccant wheels . International Journal of Heat and Mass Transfer , 49 , 2802 – 2809 .