Removal and recovery of lead in a fluidized-bed reactor by crystallization process

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Title:	Removal and recovery of lead in a fluidized-bed reactor by crystallization process
Authors:	de Luna, Mark Daniel G. Bellotindos, Luzvisminda M. Asiao, Rino N. Lu, Ming-Chun
Contributors:	環境資源管理系
Keywords:	crystallizationprocess Crystallization process Fluidized-bed reactor Heavy metals Pb removal
Date:	2015-05
Issue Date:	2016-04-19 19:02:19 (UTC+8)
Publisher:	Elsevier Science Bv
Abstract:	Lead (Pb) is known for its high and long-term toxicity even at very low concentrations and its presence limits the reusability and recyclability of industrial wastewaters. In this study, Pb was recovered from synthetic wastewater as PbCO3 crystals via the fluidized-bed crystallization process. Pb removal exceeded 99% when the operating pH was kept within a range of 8-9 and the carbonate-to-lead molar ratio was set to 3:1. Higher Pb removals were obtained with the gradual reduction of recirculation flow rate. The present study demonstrates the potential of Pb recovery from contaminated wastewaters using fluidized-bed crystallization technology. (C) 2015 Elsevier B.V. All rights reserved.
Relation:	Hydrometallurgy, v.155, pp.6-12
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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