Journal of the Brazilian Chemical Society | |
Catalytic Ozonation Using Fe2+ in the Treatment of Dairy Effluent in a Semi-Batch Process with Recycle | |
Siqueira, Adriano F.1  Messias, Raquel A.1  I. Filho, Hélcio J.1  Alcântara, Marco A. K.1  Universidade de São Paulo, Lorena, BR1  Silva, Otávio A.1  Ferreira, Guilherme A.1  | |
关键词: Â dairy industry; catalytic ozonation; advanced oxidation processes; | |
DOI : 10.5935/0103-5053.20150120 | |
学科分类:化学(综合) | |
来源: SciELO | |
【 摘 要 】
This work describes the treatment of dairy industry effluent using catalytic ozonation with Fe2+ as its catalyst in a semi-batch process with recycle. A fractional factorial design 24-1 was used with a reduction percentage of total organic carbon (TOCred) as response. Optimal conditions were obtained by the reaction time of 30 min, ozonator power of 35 W, O2 flow rate of 0.125 L min-1, Fe2+ concentration of 1.0 g L-1 and pH 4.0 for a 2 L raw effluent. TOCred of 64.03% represents a decrease in concentration from 473.0 to 170.1 mg L-1, with an estimate cost of US$ 0.03 L-1effluent. The treatment performed was not sufficient to discharge it directly on surface water; however, significant reduction of TOCred, among physical and chemical characteristics makes a better product to be proceeded into a biological treatment.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912050582542ZK.pdf | 734KB | download |