Electrochemical treatment in relation to pH of domestic wastewater using Ti/Pt electrodes

Vlyssides, AG; Karlis, PK; Rori, N; Zorpas, AA

dc.contributor.author	Vlyssides, AG	en
dc.contributor.author	Karlis, PK	en
dc.contributor.author	Rori, N	en
dc.contributor.author	Zorpas, AA	en
dc.date.accessioned	2014-03-01T01:17:48Z
dc.date.available	2014-03-01T01:17:48Z
dc.date.issued	2002	en
dc.identifier.issn	0304-3894	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14670
dc.subject	Domestic wastewater	en
dc.subject	Electrochemical treatment	en
dc.subject	Nutrient removal	en
dc.subject	Organic oxidation	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Calcium compounds	en
dc.subject.other	Carbon dioxide	en
dc.subject.other	Electrochemical electrodes	en
dc.subject.other	Electrolysis	en
dc.subject.other	Electrolytes	en
dc.subject.other	Energy utilization	en
dc.subject.other	Oxidation	en
dc.subject.other	pH	en
dc.subject.other	Pilot plants	en
dc.subject.other	Sodium chloride	en
dc.subject.other	Electrochemical treatment	en
dc.subject.other	Wastewater treatment	en
dc.subject.other	alkaline earth metal	en
dc.subject.other	ammonia	en
dc.subject.other	chlorine	en
dc.subject.other	hydroxyl group	en
dc.subject.other	nitrogen	en
dc.subject.other	oxygen	en
dc.subject.other	phosphorus	en
dc.subject.other	platinum	en
dc.subject.other	titanium	en
dc.subject.other	electrochemical technique	en
dc.subject.other	pH	en
dc.subject.other	wastewater	en
dc.subject.other	water treatment	en
dc.subject.other	article	en
dc.subject.other	density	en
dc.subject.other	domestic waste	en
dc.subject.other	electrochemistry	en
dc.subject.other	electrode	en
dc.subject.other	electrolysis	en
dc.subject.other	energy consumption	en
dc.subject.other	oxidation	en
dc.subject.other	pH	en
dc.subject.other	pilot study	en
dc.subject.other	rating scale	en
dc.subject.other	solid	en
dc.subject.other	waste water management	en
dc.subject.other	Electrodes	en
dc.subject.other	Electrolysis	en
dc.subject.other	Electrolytes	en
dc.subject.other	Hydrogen-Ion Concentration	en
dc.subject.other	Platinum	en
dc.subject.other	Titanium	en
dc.subject.other	Waste Disposal, Fluid	en
dc.title	Electrochemical treatment in relation to pH of domestic wastewater using Ti/Pt electrodes	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0304-3894(02)00143-7	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0304-3894(02)00143-7	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	This paper describes an electrochemical treatment of domestic wastewater (DW) using 0.8% (w/v) sodium chloride as electrolyte. In this technique, DW was passed through an electrolytic cell using Ti/Pt as anode and Stainless Steel 304 as cathode. Due to the strong oxidizing potential of the chemicals produced (chlorine, oxygen, hydroxyl radicals and other oxidants), the organic pollutants and nutrients (organic nitrogen, phosphorous) were wet oxidized to carbon dioxide, and nitrogen as well as phosphorous was precipitated as Ca-3(PO4)(2). Experiments were run in a continuous, laboratory-scale, pilot plant, at 40degreesC and the efficiency of oxidation was studied in relation to pH. It was found that in alkaline conditions the electrolysis was more efficient. At pH 9, NaCl concentration 0.8% (w/v), current density 0.075 A/cm(2) and for I h of electrolysis, COD was reduced by 89%, volatile suspended solids (VSS) by 90%, ammonia nitrogen by 82% and total phosphorous by 98%. The efficiency of electrolysis went up to 35 g CODr/(h m(2) A) and the energy consumption to 12.4 kWh/kg CODr. It is concluded that the application of electrolytic oxidation of DW is more advantageous compared to conventional biological treatment especially for small works. (C) 2002 Elsevier Science B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Hazardous Materials	en
dc.identifier.doi	10.1016/S0304-3894(02)00143-7	en
dc.identifier.isi	ISI:000179210500016	en
dc.identifier.volume	95	en
dc.identifier.issue	1-2	en
dc.identifier.spage	215	en
dc.identifier.epage	226	en