title: Constructed wetlands as green tools for management of boron mine wastewater.
abstract: Constructed wetlands are of increasing interest worldwide given that they represent an eco-technological solution to many environmental problems such as wastewater treatment. Turkey possesses approximately 70% of the world's total boron (B) reserves, and B contamination occurs in both natural and cultivated sites throughout Turkey, particularly in the north-west of the country. This study analyzes B removal and plant uptake of B in pilot plots of subsurface horizontal-flow constructed wetlands. Constructed wetlands were vegetated with Typha latifolia (referred to as CW1) and Phragmites australis (referred to as CW2) to treat wastewater from a borax reserve in Turkey--the largest of its type in the world and were assessed under field conditions. The B concentrations of water inflows to the systems were determined to be 10.2, 28.2, 84.6, 232.3, 716.4, and 2019.1 mg l(-1). The T. latifolia in the CW1 treatment group absorbed a total of 1300 mg kg(-1) B, whereas P. australis absorbed 839 mg kg(-1). As a result, CW1 had an average removal efficiency of 40.7%, while that of CW2 was 27.2%. Our results suggest that constructed wetlands are an effective, economic and eco-friendly solution to treating B mine wastewater and controlling the adverse environmental effects of B mining.
authors.forename: Onur Can
authors.initials: OC
authors.lastname: Türker
authors.forename: Cengiz
authors.initials: C
authors.lastname: Türe
authors.forename: Harun
authors.initials: H
authors.lastname: Böcük
authors.forename: Anil
authors.initials: A
authors.lastname: Yakar
mesh_terms: D001673:Biodegradation, Environmental; D001895:Boron / Q000032:analysis / Q000378:metabolism*; D019015:Geologic Sediments / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008906:Mining; D010865:Pilot Projects; D006109:Poaceae / Q000378:metabolism*; D014421:Turkey; D032401:Typhaceae / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*; D060753:Water Quality; D053833:Wetlands
chemical_list: D001895:Boron