Application of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor

Conventional biological treatments used in most Indonesian landfill sites are mostly ineffective in treating stabilized landfill leachates to meet the standard regulation. Thus, a combination of biological and electrochemical process is offered to successfully treat leachates containing a high conce...

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Autores principales:	Arseto Yekti Bagastyo, Arum Sofiana Hidayati, Welly Herumurti, Ervin Nurhayati
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	active anodes biologically treated leachate electrochemical oxidation non-active anode recirculating electrochemical cell Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/90a6e6f481844f8a8921a171d8f223e4
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spelling	oai:doaj.org-article:90a6e6f481844f8a8921a171d8f223e42021-11-06T10:52:30ZApplication of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor0273-12231996-973210.2166/wst.2021.060https://doaj.org/article/90a6e6f481844f8a8921a171d8f223e42021-03-01T00:00:00Zhttp://wst.iwaponline.com/content/83/6/1357https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Conventional biological treatments used in most Indonesian landfill sites are mostly ineffective in treating stabilized landfill leachates to meet the standard regulation. Thus, a combination of biological and electrochemical process is offered to successfully treat leachates containing a high concentration of organic and nitrogenous compounds. In this study, a moving bed biofilm reactor (MBBR) was applied prior to electrochemical oxidation by using boron-doped diamond (BDD), Ti/IrO2, and Ti/Pt anodes with applied current of 350, 400 and 450 mA. The objectives were to investigate the effect of anode type and the applied current on the removal of organics as well as total nitrogen from the MBBR-treated leachate with electrochemical oxidation. The optimum removal of chemical oxygen demand (COD) observed on the Ti/Pt anode was 78% by applying 400 mA, with an estimated energy of 56.7 Wh g L–1. In the case of Ti/IrO2 and BDD anodes, the optimum removal of COD was 76 and 85% with an energy consumption of 58.9 and 36.9 Wh g L–1, respectively, both achieved at 350 mA. Although all anodes showed less-satisfactory performances for total nitrogen reduction, around 46–95% removal of nitrogenous compounds was achieved by MBBR, with their partial conversion to nitrates. HIGHLIGHTS Real stabilized leachate has been treated by combined MBBR-electrochemical oxidation process.; Sequential removal of nitrogenous and organics compound in the leachate was obtained.; At optimum current applied, 85, 78, and 76% COD removal achieved by BDD, Ti/Pt, and Ti/IrO2 anode.; BDD has the lowest energy consumption of 36.9–55.6 kWh g−1 COD removed at 350–450 mA.;Arseto Yekti BagastyoArum Sofiana HidayatiWelly HerumurtiErvin NurhayatiIWA Publishingarticleactive anodesbiologically treated leachateelectrochemical oxidationnon-active anoderecirculating electrochemical cellEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 6, Pp 1357-1368 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	active anodes biologically treated leachate electrochemical oxidation non-active anode recirculating electrochemical cell Environmental technology. Sanitary engineering TD1-1066
spellingShingle	active anodes biologically treated leachate electrochemical oxidation non-active anode recirculating electrochemical cell Environmental technology. Sanitary engineering TD1-1066 Arseto Yekti Bagastyo Arum Sofiana Hidayati Welly Herumurti Ervin Nurhayati Application of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor
description	Conventional biological treatments used in most Indonesian landfill sites are mostly ineffective in treating stabilized landfill leachates to meet the standard regulation. Thus, a combination of biological and electrochemical process is offered to successfully treat leachates containing a high concentration of organic and nitrogenous compounds. In this study, a moving bed biofilm reactor (MBBR) was applied prior to electrochemical oxidation by using boron-doped diamond (BDD), Ti/IrO2, and Ti/Pt anodes with applied current of 350, 400 and 450 mA. The objectives were to investigate the effect of anode type and the applied current on the removal of organics as well as total nitrogen from the MBBR-treated leachate with electrochemical oxidation. The optimum removal of chemical oxygen demand (COD) observed on the Ti/Pt anode was 78% by applying 400 mA, with an estimated energy of 56.7 Wh g L–1. In the case of Ti/IrO2 and BDD anodes, the optimum removal of COD was 76 and 85% with an energy consumption of 58.9 and 36.9 Wh g L–1, respectively, both achieved at 350 mA. Although all anodes showed less-satisfactory performances for total nitrogen reduction, around 46–95% removal of nitrogenous compounds was achieved by MBBR, with their partial conversion to nitrates. HIGHLIGHTS Real stabilized leachate has been treated by combined MBBR-electrochemical oxidation process.; Sequential removal of nitrogenous and organics compound in the leachate was obtained.; At optimum current applied, 85, 78, and 76% COD removal achieved by BDD, Ti/Pt, and Ti/IrO2 anode.; BDD has the lowest energy consumption of 36.9–55.6 kWh g−1 COD removed at 350–450 mA.;
format	article
author	Arseto Yekti Bagastyo Arum Sofiana Hidayati Welly Herumurti Ervin Nurhayati
author_facet	Arseto Yekti Bagastyo Arum Sofiana Hidayati Welly Herumurti Ervin Nurhayati
author_sort	Arseto Yekti Bagastyo
title	Application of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor
title_short	Application of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor
title_full	Application of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor
title_fullStr	Application of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor
title_full_unstemmed	Application of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor
title_sort	application of boron-doped diamond, ti/iro2, and ti/pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/90a6e6f481844f8a8921a171d8f223e4
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Application of boron-doped diamond, Ti/IrO2, and Ti/Pt anodes for the electrochemical oxidation of landfill leachate biologically pretreated by moving bed biofilm reactor

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