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

被引：46

作者：

de Luna, Mark Daniel G. ^{[1
]}

Bellotindos, Luzvisminda M. ^{[2
]}

Asiao, Rino N. ^{[1
]}

Lu, Ming-Chun ^{[3
]}

机构：

[1] Univ Philippines Diliman, Dept Chem Engn, Quezon City, Philippines

[2] Univ Zamboanga, Archie Eustaquio Res Lab, Zamboanga City, Philippines

[3] Chia Nan Univ Pharm & Sci, Dept Environm Resources Management, Tainan 71710, Taiwan

来源：

HYDROMETALLURGY | 2015年 / 155卷

关键词：

Crystallization process; Fluidized-bed reactor; Heavy metals; Pb removal; WASTE-WATER; CARBONATE;

D O I：

10.1016/j.hydromet.2015.03.009

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

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.

引用

页码：6 / 12

页数：7

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