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- W4313305199 abstract "Waste cutting fluids are considered as hazardous wastes because they contain numerous different components causing environmental problems. Normally, a flocculation method is applied to treat preliminarily. However, the output wastewater still needs treating further to meet the national standards of industrial wastewater before disposal. So, this research reports the secondary treatment stage of the waste cutting fluid collected from an industrial factory in Vietnam using zero valent iron (ZVI) catalyst. This catalyst was synthesized via a redox reaction between sodium borohydride (NaBH4) and ferric chloride (FeCl3). Key factors affecting the quality of the ZVI particles such as the concentration of the NaBH4 reductant, reaction temperature, and dropping rate were investigated systematically. At the optimum synthesis conditions, viz. the NaBH4 concentration of 0.2 M, reaction temperature of 25 oC and the dropping rate of 3 ml/min, the synthesized ZVI exhibited a narrow range of particle size distribution with a mean size of 3.9 μm, followed by a high surface area, and good catalytic activity. As a catalyst for secondary treatment of the waste cutting fluid, the synthesized ZVI demonstrated a moderate chemical oxygen demand (COD) removal performance of 49%, corresponding to COD reduction for from 4023 mg/l to about 2059 mg/l." @default.
- W4313305199 created "2023-01-06" @default.
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- W4313305199 date "2022-10-16" @default.
- W4313305199 modified "2023-10-18" @default.
- W4313305199 title "Treatment of wastewater from the flocculation process of waste cutting fluid by zerovalent iron catalyst" @default.
- W4313305199 doi "https://doi.org/10.51316/jca.2022.057" @default.
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