Environmental Science

Get Advances in Ultrasound Technology for Environmental PDF

By Ta Yeong Wu, Ningqun Guo, Chee Yang Teh, Visit Amazon's Jacqueline Xiao Wen Hay Page, search results, Learn about Author Central, Jacqueline Xiao Wen Hay,

ISBN-10: 9400755325

ISBN-13: 9789400755321

ISBN-10: 9400755333

ISBN-13: 9789400755338

Over the previous ten years, cutting edge applied sciences have proven that complex oxidation methods are hugely promising while utilized to the remediation of polluted water or wastewater as they don’t generate any sludge or sturdy fabric of unsafe nature.

Advances in Ultrasound expertise for Environmental Remediation studies the basics of ultrasound know-how and the state-of-the-art advancements in “ultrasound-based loose radical new release” in environmental remediation and pollutants prevention. It additionally offers the demanding situations of introducing ultrasound expertise into large-scale environmental remediation purposes and examines the equipment used to enhance ultrasound expertise. certainly, ultrasonic platforms are tremendous delicate and susceptible to operational parameters which can't be managed and not using a reliable wisdom and knowing of actual and chemical phenomena.

Advances in Ultrasound expertise for Environmental Remediation beneficial properties the idea and basics of ultrasound expertise and discusses its strength as a substitute approach in environmental remediation.

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2011) presented a study on the effect of ultrasonic frequency on formic acid sonochemical degradation. They found that not only CO2, CO, H2, and oxalic acid were produced, but formaldehyde and methane were also detected. An increase of approximately six- to eightfolds of the total formic acid degradation yield was recorded when the frequency was increased from 20 to 607 kHz. This is because high frequency gave a more diffuse and widely distributed zone of cavitation with formation of larger cavitation bubbles.

Maximum degradation rate was achieved by ultrasonification/ TiO2/H2O2 combination as compared to ultrasonification/TiO2 and ultrasonification/H2O2. Laxmi et al. 2 Ultrasound Treatment of Phenolic Compounds 33 reacts with OHÁ in solution, rather than inside because the bubble/liquid interface is hydrophobic. 6 2,4-Dinitrophenol The USEPA recommends restricting 2,4-dinitrophenol (DNP) concentration in natural water below 10 ng/L due to its high toxicity and stability (Guo et al. 2008). The degradation mechanisms and reaction kinetics of DNP in different processes were proposed by Guo et al.

64 % Decolorization rate Zhang et al. 5, 25 °C, Decolorization: *63 % 120 min 1 g/L Er3+:YAlO3/TiO2-ZnO, 1:1 Ti/Zn molar ratio, 5 wt % Er3+:YAlO3 Ultrasound ? UV ? 37 mg/L Ultrasound ? UV ? 9 % Results 200 mg/L Ultrasound ? electrochemical oxidation ? 3 g/L Fe2O3/SBA-15, 8 mM H2O2 Acid Orange 7 Ultrasound ? UV ? Fe2O3/SBA-15 ? H2O2 Acid Orange 7 Ultrasound ? Fe2O3-Al2O3-meso ? H2O2 Acid Orange 7 Ultrasound ? Goethite ? H2O2 Acid Orange 7 Ultrasound ? Fe0 ? H2O2 Reference (continued) Zhong et al.

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Advances in Ultrasound Technology for Environmental Remediation by Ta Yeong Wu, Ningqun Guo, Chee Yang Teh, Visit Amazon's Jacqueline Xiao Wen Hay Page, search results, Learn about Author Central, Jacqueline Xiao Wen Hay,


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