Emprego de planejamento fatorial no desenvolvimento de uma metodologia para extração de zinco de resíduos galvânicos

Química Nova

Samantha Olivier²  Valdinete Lins Da Silva²  Maurício Da Motta²  José Edson Da Silva¹ 

[1] ,Universidade Federal de Pernambuco Departamento de Engenharia Química Recife PE ,Brasil

关键词: electroplating;    galvanic sludge;    zinc;   

DOI  :  10.1590/S0100-40422007000700043

来源: SciELO

【 摘 要 】

The plating process generates solid waste rich in heavy metals and aiming to reduce environmental impact of such waste, this work suggests a methodology for zinc reduction, through a 2(4) factorial planning, studying the influence of the following variables: acid concentration (15, 20 or 30% v/v), acid type (sulfuric or hydrochloric), acid volume (15, 20 or 25 mL) and extraction time (12, 24 or 36 h). Through this methodology it is possible to establish the optimal conditions (15 mL of a 30% hydrochloric acid concentration during 12 h) to get a 100% efficiency in zinc extraction.

【 授权许可】

CC BY-NC   
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