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Title: A study on development of indigenous integrated microwave-ultraviolet reactor for degradation of <i style="mso-bidi-font-style:normal">p</i>-cresol in aqueous solution
Authors: Karthikeyan, S
Gopalakrishnan, A Navaneetha
Keywords: Microwave-ultraviolet treatment
<i style="mso-bidi-font-style:normal"><span style="font-size:9.0pt;font-family:"Times New Roman","serif"; mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:Mangal; mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language:HI" lang="EN-GB">p</span></i><span style="font-size:9.0pt;font-family:"Times New Roman","serif"; mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:Mangal; mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language:HI; mso-bidi-font-style:italic" lang="EN-GB">-Cresol</span>
Wastewater treatment
Issue Date: Nov-2011
Publisher: NISCAIR-CSIR, India
Abstract: <span style="mso-bidi-language:TA" lang="EN-GB">An integrated microwave-ultraviolet (MW-UV) reactor has been developed indigenously and used for the degradation of aqueous <i style="mso-bidi-font-style:normal">p-</i>cresol. The <i style="mso-bidi-font-style:normal">p-</i>cresol degradation is carried out in six phases, namely (i) microwave irradiation (MW), (ii) photodegradation with UV light (UV), (iii) simultaneous microwave and ultraviolet radiations (MW-UV), (iv) microwave in presence of TiO<sub>2</sub> (MW-TiO<sub>2</sub>), (v) photodegradation by UV and TiO<sub>2</sub> (UV-TiO<sub>2</sub>), and (vi) simultaneous MW and UV irradiations in presence of TiO<sub>2</sub> (MW-UV-TiO<sub>2</sub>). T<span style="mso-bidi-language: TA" lang="EN-GB">he order of the degradation efficiency is found to be MW-UV-TiO<sub>2</sub>&gt;UV-TiO<sub>2</sub>&gt;MW-TiO<sub>2</sub>&gt;UV-MW&gt;UV&gt;MW. The complete degradation of <i style="mso-bidi-font-style:normal">p-</i>cresol is obtained by MW-UV-TiO<sub>2 </sub>and it is three-fold economical in catalyst requirement than UV-TiO<sub>2</sub>. The degradation of <i style="mso-bidi-font-style:normal">p-</i>cresol followed pseudo first order reaction and the reaction rate (k) for MW-UV-TiO<sub>2</sub> is found to be 3 times greater than that for UV-TiO<sub>2</sub>. The MW-UV-TiO<sub>2</sub> is also 2.3 times efficient in the removal of total organic carbon than UV-TiO<sub>2</sub>. It is also observed that the unit operating cost of conventional UV-TiO<sub>2</sub> and MW-UV-TiO<sub>2 </sub>is almost same. </span></span>
Description: 458-462
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.18(6) [November 2011]

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