Environmental Science

Download e-book for kindle: Advances in Ultrasound Technology for Environmental by Ta Yeong Wu, Ningqun Guo, Chee Yang Teh, Visit Amazon's

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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 prior ten years, leading edge applied sciences have proven that complicated oxidation approaches are hugely promising whilst utilized to the remediation of polluted water or wastewater as they don’t generate any sludge or reliable fabric of unsafe nature.

Advances in Ultrasound know-how for Environmental Remediation reports the basics of ultrasound expertise 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 structures are super delicate and liable to operational parameters which can't be managed with out a solid wisdom and realizing of actual and chemical phenomena.

Advances in Ultrasound expertise for Environmental Remediation beneficial properties the idea and basics of ultrasound know-how and discusses its power in its place technique in environmental remediation.

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Extra resources for Advances in Ultrasound Technology for Environmental Remediation

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Thus, mechano-chemical degradation of these polymers can be performed to modify the properties of the end product and for the effective remediation of the waste plastic (Vinu and Madras 2011). For the degradation of two polymer samples, the lower molar mass PMMA and the higher molar mass poly(butyl methacrylate) (PBMA), Kanwal et al. (2007) presented a study on determining the existence and range of lower limiting molar mass degradation for chemically different polymers. They found that the value of the limiting molar mass of polymer was dependent on the frequency of the ultrasonic used and to some extent on the amount of entanglements present in the molecule chain but not on the chemical nature of the polymer.

UV Ultrasound Poly(methyl methacrylate), poly(ethyl methacrylate), poly(butyl methacrylate) 1 g/L (PEO,PAA), 5 g/L (PVP) Ultrasound ? 4 Degradation performance of polymers under ultrasonic-enhanced degradation in single/combined treatment Reference (continued) Daraboina and Madras (2009) Vinu and Madras (2011) Aarthi et al. (2007) Koda et al. (2011) Kanwal et al. (2007) Koda et al. (2011) Koda et al. 6 % Desai et al. (2008) Ostlund et al. 4 % Mn reduction: *94 % Degradation rate constant: 21 9 107 mol/g min Koda et al.

During ultrasonication, the movement of main chain in the polymer increases with the length of side chain, leading to molecular chain scission in the main chain of the polymer. During the ultrasonication of PBMA, an addition of different initiators (benzoyl peroxide, dicumyl peroxide, and azobisisobutyronitrile) was found to exhibit a negative effect because these initiators interacted with the polymer radicals to form stable polymer, resulting a lower degradation efficiency (Daraboina and Madras 2009).

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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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