Olive oil wastewater treatment with the use of an electrolysis system

Israilides, CJ; Vlyssides, AG; Mourafeti, VN; Karvouni, G

dc.contributor.author	Israilides, CJ	en
dc.contributor.author	Vlyssides, AG	en
dc.contributor.author	Mourafeti, VN	en
dc.contributor.author	Karvouni, G	en
dc.date.accessioned	2014-03-01T01:13:14Z
dc.date.available	2014-03-01T01:13:14Z
dc.date.issued	1997	en
dc.identifier.issn	0960-8524	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12375
dc.subject	Electrolysis treatment	en
dc.subject	Olive oil wastewater	en
dc.subject	Organics oxidation	en
dc.subject	Ti/Pt electrode	en
dc.subject.classification	Agricultural Engineering	en
dc.subject.classification	Biotechnology & Applied Microbiology	en
dc.subject.classification	Energy & Fuels	en
dc.subject.other	Anodes	en
dc.subject.other	Cathodes	en
dc.subject.other	Chemical oxygen demand	en
dc.subject.other	Effluents	en
dc.subject.other	Electrolysis	en
dc.subject.other	Hazardous materials	en
dc.subject.other	Oxidation	en
dc.subject.other	Platinum	en
dc.subject.other	Sodium chloride	en
dc.subject.other	Titanium	en
dc.subject.other	Detoxification	en
dc.subject.other	Olive oil wastewater	en
dc.subject.other	Wastewater treatment	en
dc.subject.other	carbon dioxide	en
dc.subject.other	olive oil	en
dc.subject.other	phenol derivative	en
dc.subject.other	platinum	en
dc.subject.other	sodium chloride	en
dc.subject.other	titanium	en
dc.subject.other	water	en
dc.subject.other	article	en
dc.subject.other	electrolysis	en
dc.subject.other	energy consumption	en
dc.subject.other	priority journal	en
dc.subject.other	waste water management	en
dc.title	Olive oil wastewater treatment with the use of an electrolysis system	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0960-8524(97)00023-0	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0960-8524(97)00023-0	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	Olive oil wastewater (OOW), a toxic liquid associated with the production of olive oil, was treated by an electrochemical method using Ti/Pt as anode and Stainless Steel 304 as cathode. In this technique, sodium chloride 4% (w/v) as an electrolyte was added to the wastewater and the mixture was passed through an electrolytic cell. Due to the strong oxidizing potential of the chemicals produced (chloride, oxygen, hydroxyl radicals and other oxidants) the organic pollutants were wet oxidized to carbon dioxide and water. A number of experiments were run in a batch, laboratory-scale, pilot-plant, and the results are reported here. After 1 and 10 h of electrolysis at 0.26 A/cm2, total COD was reduced by 41 and 93%, respectively, total TOC was reduced by 20 and 80.4%, VSS were reduced by 1 and 98.7%, and total phenolic compounds were reduced by 50 and 99.4%, while the mean anode efficiency was 1960 g h-1 A-1 sq.m-1 and 340 g h-1 A-1 sq.m-1. Also, the mean energy consumption was 1.273 kwh per kg of COD removed and 12.3 kwh per kg of COD removed for 1 and 10 h respectively. These results strongly indicate that this electrolytic method of total oxidation of OOW is not feasible. However, it could be used as an oxidation pretreatment stage for detoxification of the wastewater.Olive oil wastewater (OOW), a toxic liquid associated with the production of olive oil, was treated by an electrochemical method using Ti/Pt as anode and Stainless Steel 304 as cathode. In this technique, sodium chloride 4%(w/v) as an electrolyte was added to the wastewater and the mixture was passed through an electrolytic cell. Due to the strong oxidizing potential of the chemicals produced (chlorine, oxygen, hydroxyl radicals and other oxidants) the organic pollutants were wet oxidized to carbon dioxide and water. A number of experiments were run in a batch, laboratory-scale, pilot-plant, and the results are reported here. After 1 and 10 h of electrolysis at 0.26 A/cm2, total COD was reduced by 41 and 93%, respectively, total TOC was reduced by 20 and 80.4%, VSS were reduced by 1 and 98.7%, and total phenolic compounds were reduced by 50 and 99.4%, while the mean anode efficiency was 1960 g h-1 A-1 sq.m-1 and 340 g h-1 A-1 sq.m-1. Also, the mean energy consumption was 1.273 kwh per kg of COD removed and 12.3 kwh per kg of COD removed for 1 and 10 h, respectively. These results strongly indicate that this electrolytic method of total oxidation of OOW is not feasible. However, it could be used as an oxidation pretreatment stage for detoxification of the wastewater.	en
heal.publisher	Elsevier Science Ltd, Oxford, United Kingdom	en
heal.journalName	Bioresource Technology	en
dc.identifier.doi	10.1016/S0960-8524(97)00023-0	en
dc.identifier.isi	ISI:A1997YG07600008	en
dc.identifier.volume	61	en
dc.identifier.issue	2	en
dc.identifier.spage	163	en
dc.identifier.epage	170	en