RT info:eu-repo/semantics/article
T1 Comprehensive characterization of industrial wastewaters using EEM fluorescence, FT-IR and 1H NMR techniques
A1 Rodríguez Vidal, Francisco Javier
A1 Ortega Azabache, Beatriz
A1 González Martínez, Ángela
A1 Bellido Fernández, Ana
K1 Industrial wastewaters
K1 Dissolved organic matter
K1 EEM fluorescence
K1 FT-IR
K1 1H NMR
K1 Química orgánica
K1 Chemistry, Organic
AB The organic matter present in six industrial wastewaters (pulp and paper mill, brewery, textile, dairy, slaughterhouse effluents and a municipal landfill leachate) has been studied in this work using three analytical techniques: excitation-emission matrix fluorescence (EEMF), proton nuclear magnetic resonance spectroscopy (1H NMR) and Fourier transform infrared spectroscopy (FTIR).The pulp and paper mill effluent shows characteristic signals of the presence of lignins, carbohydrates and carboxylic acids, as well as sulfate, carbonate and sulfonates (coming from surfactants used in the cleaning of tanks). The main constituents of the brewery effluent are peptides and proteins coming mainly from spent yeast and diatomite filters (the presence of the latter was confirmed by Sisingle bondO bands in the FTIR spectrum). The municipal landfill leachate is characterized by the majority presence of humic substances (typical of an old landfill) and a residual presence of small peptides, amino acids and carboxylic acids. Additionally, several inorganic compounds were identified by FTIR, such as nitrate, sulfate, phosphate and cyanide ions. The textile effluent from a cotton-based industry contains carbohydrates, carboxylic acids and sulfonates, which can act as auxochromes in the textile industry. The dairy effluent comprises amino acids and small peptides coming from the biodegradation of milk and whey in addition to carbohydrates (lactose) and carboxylic acids (mainly lactic acid). The presence of tyrosine-like peaks B in the EEMF spectrum of the slaughterhouse effluent indicates the existence of small peptides and amino acids coming from the biodegradation of blood proteins. Additionally, residual glucose, fatty acids, phosphate and sulfate were also identified in this effluent.
PB Elsevier
SN 0048-9697
YR 2022
FD 2022-01
LK http://hdl.handle.net/10259/6182
UL http://hdl.handle.net/10259/6182
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 16-abr-2024