Coir pith of the green coconut in the decontamination of radioactive aqueous effluent
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2007
Autores IPEN
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 8th/ MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 15th
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Resumo
Industrial segments as plant of mining, hospitals and university generate considerable volumes of radioactive
wastewater containing uranium. The increasing development of the use of the nuclear energy to lead away to an
expansion of the sectors of the nuclear fuel cycle, but it leads to security problems and it appears the necessity of
control of the removing of uranium and radioactive effluent treatments. Researches evaluate if the technique of
the biosorption would promote an alternative process with attractive characteristics of cost-benefit. The residual
biomass from agricultural activities has been studied and used as adsorbent of metals and organic composts by
low cost, abundance and for being biodegradable. In this work, it is presented the efficiency of the coir pith for
the adsorption of ions UO2
2+. The coir pith is a by-product of the harvest of the coconut, a renewable natural
source. The study was accomplished using the batch techniques. The influence from pH 2 to 5, the dose of the
coir pith, equilibrium time and the models of kinetic reaction were investigated. It was verified that the
adsorption increased with the increase of pH and of the dose. The equilibrium time was of 30min and the best
correspondence with the model of pseudo second-order was observed. The results obtained has been promising,
so use as adsorvent of metallic ions represents an economic alternative in relation to the conventional treatment
of effluent.
Como referenciar
MONTEIRO, RAQUEL A.; YAMAURA, MITIKO. Coir pith of the green coconut in the decontamination of radioactive aqueous effluent. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 8th/ MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 15th, Sept. 30 - Oct. 5, 2007, Santos, SP. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/18111. Acesso em: 20 Feb 2025.
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