Effect of ozone and ozone/persulfate processes on biodegradable and soluble characteristics of semiaerobic stabilized leachate. Issue 1 (30th April 2013)

• Record Type: Journal Article
• Authors: Abu Amr, Salem S.; Aziz, Hamidi Abdul; Adlan, Mohd Nordin; Alkasseh, Jaber M.A.
• Is Part Of: Environmental progress & sustainable energy. Volume 33:Issue 1(2014:Apr.)
• Page Start: 184
• Page End: 191
• Publication Date: 2013-04-30
• Subjects: Environmental engineering -- Periodicals; Sustainable engineering -- Periodicals; Environmental chemistry -- Periodicals; 333.7
• DOI: 10.1002/ep.11779
• Languages: English
• ISSNs: 1944-7442

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>This study investigated the effects of O<sub>3</sub> and O<sub>3</sub>/S<sub>2</sub>O<sub>8</sub><sup>2−</sup> in the advanced oxidation process (AOPs) on the biodegradable and soluble characteristics of semiaerobic stabilized solid waste leachate. The biodegradability (BOD<sub>5</sub>/COD) ratio improved from 0.034 to 0.05 and 0.29 following O<sub>3</sub> and O<sub>3</sub>/ S<sub>2</sub>O<sub>8</sub><sup>2−</sup>, respectively. Fractions of biodegradable COD<sub>(bi)</sub> (24%), nonbiodegradable COD<sub>(ubi)</sub> (76%), soluble COD<sub>(s)</sub> (59%), biodegradable soluble COD<sub>(bsi)</sub> (38%), nonbiodegradable soluble COD<sub>(ubsi)</sub> (62%), and particulate COD (PCOD) (41%) in stabilized leachate were also investigated. The fraction of COD <sub>(bi)</sub> increased to 28 and 39% after applying O<sub>3</sub> and O<sub>3</sub>/ S<sub>2</sub>O<sub>8</sub><sup>2−</sup> in AOPs, respectively. COD<sub>(S)</sub> increased to 65 after O<sub>3</sub> and to 72% after O<sub>3</sub>/AOPs, whereas COD <sub>(bsi)</sub> increased to 38 and 55% after O<sub>3</sub> and O<sub>3</sub>/AOPs, respectively. The removal efficiency of total COD was obtained at 15 after O<sub>3</sub> alone and improved to 72% following ozone‐based AOPs, whereas PCOD reduced from 41 to 35 after O<sub>3</sub> and 28% after ozone‐based AOPs. Ozone/Prsulfate is an efficient method for degradation of stabilized leachate, enhanced biodegradability and improved biodegradable and soluble characteristics of stabilized leachate. © 2013 American Institute of Chemical Engineers Environ Prog, 33: 184–191, 2014</p> </abstract>