Lead removal from battery solutions using kaolinite modified with manganese oxide

Quimica nova

Monteiro, Ercila Pinto¹  Santana, Genilson Pereira² 

[1] Universidade Federal do Amazonas, Coari, Brasil;Universidade Federal do Amazonas, Manaus, Brasil

关键词: kaolinite;    adsorbent;    heavy metal.;   

DOI  :  10.1590/S0100-40422012000600016

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Nine absorbents were prepared using a mixture of Amazonian kaolinite and MnO2 at three temperatures (600, 700 and 900 ºC) in order to retain Pb2+ ions contained in the battery solutions. The batch experiments carried out with the batteries used water for 3 h and the kinetic isotherm was fitted with the pseudo-second order Lagergren equation. Findings show that synthesized adsorbents AD4, AD5 and AD7 performed well in reducing the Pb2+ ion content from 0.36 to 0.00 mg g-1. The better performance for removing the Pb2+ ions occurred for adsorbents synthesized in the temperature range from 600 to 700 ºC.

【 授权许可】

CC BY