title: A voltammetric electronic tongue as tool for water quality monitoring in wastewater treatment plants.
abstract: The use of a voltammetric electronic tongue as tool for the prediction of concentration levels of certain water quality parameters from influent and effluent wastewater from a Submerged Anaerobic Membrane Bioreactor pilot plant applied to domestic wastewater treatment is proposed here. The electronic tongue consists of a set of noble (Au, Pt, Rh, Ir, and Ag) and non-noble (Ni, Co and Cu) electrodes that were housed inside a stainless steel cylinder which was used as the body of the electronic tongue system. As a previous step an electrochemical study of the response of the ions sulphate, orthophosphate, acetate, bicarbonate and ammonium was carried out in water using the electrodes contained in the electronic tongue. The second part of the work was devoted to the application of the electronic tongue to the characterization of the influent and effluent waters from the wastewater treatment plant. Partial Least Squares analysis was used to obtain a correlation between the data from the tongue and the pollution parameters measured in the laboratory such as soluble chemical oxygen demand (CODs), soluble biological oxygen demand (BODs), ammonia (NH(4)-N), orthophosphate (PO(4)-P), Sulphate (SO(4)-S), acetic acid (HAC) and alkalinity (Alk). A total of 28 and 11 samples were used in the training and the validation steps, respectively, for both influent and effluent water samples. The electronic tongue showed relatively good predictive power for the determination of BOD, COD, NH(4)-N, PO(4)-P, SO(4)-S, and Alk.
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia, Universidad de Valencia, Valencia, Spain.
authors.forename: Inmaculada
authors.initials: I
authors.lastname: Campos
authors.forename: Miguel
authors.initials: M
authors.lastname: Alcañiz
authors.forename: Daniel
authors.initials: D
authors.lastname: Aguado
authors.forename: Ramón
authors.initials: R
authors.lastname: Barat
authors.forename: José
authors.initials: J
authors.lastname: Ferrer
authors.forename: Luis
authors.initials: L
authors.lastname: Gil
authors.forename: Mouna
authors.initials: M
authors.lastname: Marrakchi
authors.forename: Ramón
authors.initials: R
authors.lastname: Martínez-Mañez
authors.forename: Juan
authors.initials: J
authors.lastname: Soto
authors.forename: José-Luis
authors.initials: JL
authors.lastname: Vivancos
mesh_terms: D000693:Anaerobiosis; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors / Q000382:microbiology; D004553:Electric Conductivity; D055664:Electrochemical Techniques / Q000295:instrumentation*; D004566:Electrodes; D004581:Electronics / Q000295:instrumentation*; D004784:Environmental Monitoring / Q000295:instrumentation*; D006863:Hydrogen-Ion Concentration; D016018:Least-Squares Analysis; D008567:Membranes, Artificial; D009862:Online Systems; D010865:Pilot Projects; D015203:Reproducibility of Results; D012997:Solvents; D014865:Waste Disposal, Fluid; D018508:Water Purification / Q000295:instrumentation*; D060753:Water Quality
chemical_list: D008567:Membranes, Artificial; D012997:Solvents