title: Optimization of treatment leachates from young, middle-aged and elderly landfills with bipolar membrane electrodialysis.
abstract: In this study, a bipolar membrane electrodialysis (BMED) process, which is thought to be an effective treatment method for leachate, was evaluated for leachates of three different ages ('young', 'middle-aged' and 'elderly'). The leachates were pretreated to eliminate membrane fouling problems prior to the BMED process. Experimental studies were carried out to determine optimal operating conditions for the three differently aged leachates in the BMED process. According to the experiment results, there was a high removal efficiency of conductivity determined at 4 membrane - 25 V for young and elderly leachate and at 1 membrane - 25 V for middle-aged leachate. It was found that the operating times required to reach the optimal endpoints (at conductivity of about 2 mS/cm) of BMED process were 90, 180 and 300 min for the middle-aged, young and elderly leachates, respectively. Under the optimum operating conditions for the BMED process, removal efficiencies of conductivity and chemical oxygen demand were determined to be 89.5% and 60% for young, 82.5% and 30% for middle-aged and 91.8% and 26% for elderly leachate, respectively.
authors.affiliation: a Department of Environmental Engineering, Faculty of Civil Engineering , Yildiz Technical University , Istanbul , Turkey.
authors.forename: Fatih
authors.initials: F
authors.lastname: Ilhan
authors.affiliation: a Department of Environmental Engineering, Faculty of Civil Engineering , Yildiz Technical University , Istanbul , Turkey.
authors.forename: Senem
authors.initials: S
authors.lastname: Yazici Guvenc
authors.affiliation: a Department of Environmental Engineering, Faculty of Civil Engineering , Yildiz Technical University , Istanbul , Turkey.
authors.forename: Yasar
authors.initials: Y
authors.lastname: Avsar
authors.affiliation: a Department of Environmental Engineering, Faculty of Civil Engineering , Yildiz Technical University , Istanbul , Turkey.
authors.forename: Ugur
authors.initials: U
authors.lastname: Kurt
authors.affiliation: b Department of Environmental Engineering, Faculty of Engineering , Adiyaman University , Adiyaman , Turkey.
authors.forename: Mustafa Talha
authors.initials: MT
authors.lastname: Gonullu
mesh_terms: D057919:Biological Oxygen Demand Analysis; D008567:Membranes, Artificial; D064091:Waste Disposal Facilities; D014874:Water Pollutants, Chemical
chemical_list: D008567:Membranes, Artificial; D014874:Water Pollutants, Chemical
keywords: Bipolar membrane; deionization; electrodialysis; leachate; recovery