Premium
Batch biosorption of radioactive thallium on solid waste of oleum rosea process
Author(s) -
Yapici Sinan,
Eroglu Hayrettin
Publication year - 2013
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.4076
Subject(s) - biosorption , aqueous solution , adsorption , chemistry , nuclear chemistry , pulp and paper industry , radionuclide , waste management , materials science , sorption , organic chemistry , physics , quantum mechanics , engineering
BACKGROUND In nuclear medicine, the discharge of the radionuclides waste into the environment can cause serious environmental problems. It is preferable to remove these radionuclides from aqueous waste before discharging. Biosorption as an alternative has been becoming more important. The aim of the present work is to remove radioactive Tl‐201 by biosorption from the aqueous media using the solid waste of an oleum rosea processing plant as a biosorbent.RESULTS Radioactive Tl‐201 was removed from aqueous solution by biosorption in a stirred batch process with experimental parameters pH , temperature, adsorbent dose, nominal adsorbent size, and stirring speed. The effectiveness of the parameters in decreasing order was found to be initial pH , particle size and adsorbent dose. The biosorption yield is slightly reduced with increasing temperature, and no considerable effect of stirring speed was observed. The process is multi‐layered on the heterogeneous surface and has a physical character. Negative ΔG showed that the process is spontaneous, and negative Δ H indicates that the process has exothermic character.CONCLUSIONS The process has serious potential because of its fast biosorption rate with an equilibrium period of about 10 min and high biosorption yields up to 93%. © 2013 Society of Chemical Industry