Journal ArticleDOI
Biosorption of toxic, heavy, no-carrier-added radionuclides by calcium alginate beads
Dalia Nayak,Susanta Lahiri +1 more
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In this article, the adsorption behavior of heavy radionuclides, present altogether in no-carrier-added state, e.g., 197-200Pb, 197 -200Tl and 197Hg, have been carried out with calcium alginate beads.Abstract:
Studies on adsorption behavior of heavy radionuclides, present altogether in no-carrier-added state, e.g., 197-200Pb, 197-200Tl and 197Hg, have been carried out with calcium alginate beads. High lead (100%) and moderate thallium removal (~65%) was achieved in pH range 2-7. 100% mercury removal was also achieved at pH 2 and 4. Effort has been made to recover all three radionuclides adsorbed in the calcium alginate beads using various chemicals, such as HCl, thiourea, sodium acetate, sodium oxalate and sodium nitrite. It was found that 0.1M HCl and 0.1M thiourea could remove at pH 1 80-90% of adsorbed Pb. Tl recovery was possible by all chemicals mentioned above. Hg was also recovered by all chemicals except HCl.read more
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Regeneration of adsorbents and recovery of heavy metals: a review
TL;DR: In this paper, a review summarizes the removal efficiency of various adsorbents, desorption efficiency of different regenerating agents and recovery of the heavy metals from both saturated and desorbing solvents used for regeneration.
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Biosorption of cadmium, lead and copper with calcium alginate xerogels and immobilized Fucus vesiculosus.
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Sawdust: A green and economical sorbent for thallium removal
TL;DR: In this article, a simple and low-cost modification results in increasing the sorption capacity of raw sawdust from 2.71 to 13.18 mg g −1, and the binding of metal ions was found to be pH dependent, optimal sorption accruing at around pH 6-9.
Journal ArticleDOI
Cobalt and strontium sorption by moss biosorbent: Modeling of single and binary metal systems
Jana Marešová,Martin Pipíška,Marián Rozložník,Miroslav Horník,Lucia Remenárová,Jozef Augustín +5 more
TL;DR: In this paper, the authors used sporbent prepared from moss Rhytidiadelphus squarrosus for obtaining quantitative data of the cobalt and strontium sorption from single and binary aqueous CoCl2 and SrCl2 solutions.