Decreasing COD in Sugarcane Vinasse Using the Fenton Reaction: The Effect of Processing Parameters
Autor: | Aswati Mindaryani, Sarto Sarto, Muslikhin Hidayat, Dhias Cahya Hakika |
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Rok vydání: | 2019 |
Předmět: |
advanced oxidation process
Vinasse sugarcane vinasse 02 engineering and technology 010501 environmental sciences lcsh:Chemical technology 01 natural sciences Catalysis lcsh:Chemistry Fenton reaction chemistry.chemical_compound chemical oxygen demand lcsh:TP1-1185 Organic matter Physical and Theoretical Chemistry Hydrogen peroxide 0105 earth and related environmental sciences chemistry.chemical_classification Chemistry Advanced oxidation process Chemical oxygen demand Biodegradation 021001 nanoscience & nanotechnology lcsh:QD1-999 Wastewater BMG kinetic model Hydroxyl radical 0210 nano-technology Nuclear chemistry |
Zdroj: | Catalysts Volume 9 Issue 11 Catalysts, Vol 9, Iss 11, p 881 (2019) |
ISSN: | 2073-4344 |
DOI: | 10.3390/catal9110881 |
Popis: | An experiment on Fenton degradation of sugarcane vinasse was carried out to determine its effect on the wastewater characteristics. Vinasse, a by-product of distillation in the bioethanol industry, contains high organic matter, as the value of chemical oxygen demand (COD) is > 100,000 mg/L and BOD5 is 31,250 mg/L. The Fenton reaction is one of the advanced oxidation process (AOP) methods which has been widely applied for the treatment of wastewater containing organic pollutants and contaminants. This method utilizes hydroxyl radical (&bull OH) produced from the catalyzing reaction between Fe2+ or Fe3+ and hydrogen peroxide. The effect of pH, the ratio of [H2O2] and [COD], and the ratio of [H2O2] to [Fe3+] were studied in this research to evaluate the Fenton reaction. Results from this experiment showed that treatment of vinasse using the Fenton reaction decreased the COD value to 48.10%, and its biodegradability enhanced almost two times at a pH value of 3.8, a ratio of [H2O2] to [COD] of 0.62, and a ratio of [H2O2] to [Fe3+] of 50 (g/g), which demonstrated that the Fenton treatment was effective to reduce organic matter of sugarcane vinasse. Three kinetic models (first order, second order, and Behnajad&ndash Modirshahla&ndash Ghanbery (BMG) kinetic model) were used to evaluate the degradation of the COD value. On the basis of the value of R2 (coefficient of determination), we suggested that BMG represented the best kinetic model. This study finds that the Fenton treatment is able to mitigate the environmental impacts of sugarcane vinasse. |
Databáze: | OpenAIRE |
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