Evaluation of a low-cost adsorbent for removal of toxic metal ions from wastewater of an electroplating factory.
In this study, sugar cane residue or bagasse was used for removal of toxic metal ions from wastewater of an electroplating factory located in northeast Brazil. Prior acid treatment increased the adsorption efficacies in batch wise experiments. The microstructure of the material before and after the treatment was investigated by X-ray diffraction, infrared spectroscopy and scanning electron microscopy. Column operations showed that removals of Cu(2+), Ni(2+) and Zn(2+) from wastewater (in the absence of cyanide) were 95.5%, 96.3.0%, and 97.1%, respectively. Regeneration of the adsorbent obtained in acid indicated that the efficiencies decreased only after the fourth cycle of re-use. Acid-treated sugar cane bagasse can be considered a viable alternative to common methods to remove toxic metal ions from aqueous effluents of electroplating industries.
Sousa
Francisco W
FW
Laboratório de Análise Traço, Departamento de Química Analítica e Físico Química, Universidade Federal do Ceará, Campus do Pici, Centro de Ciências, Bloco 940-CEP: 60451-970 Fortaleza, Ceará, Brazil.
Sousa
Marcelo James
MJ
Oliveira
Isadora R N
IR
Oliveira
André G
AG
Cavalcante
Rivelino M
RM
Fechine
Pierre B A
PB
Neto
Vicente O S
VO
de Keukeleire
Denis
D
Nascimento
Ronaldo F
RF
D000327:Adsorption; D003300:Copper / Q000737:chemistry / Q000302:isolation & purification; D004595:Electroplating; D008670:Metals / Q000737:chemistry* / Q000302:isolation & purification*; D009532:Nickel / Q000737:chemistry / Q000302:isolation & purification; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification*; D015032:Zinc / Q000737:chemistry / Q000302:isolation & purification
D008670:Metals; D014874:Water Pollutants, Chemical; D003300:Copper; D009532:Nickel; D015032:Zinc