fast and simple online determination of cod

Several authors have extensively studied the COD, BOD 5, and TOC analyses in an attempt to improve standard protocols (Visco et al. TOC is considered a potential alternative for COD and BOD, as it is faster, more precise, sensitive, and environmentally friendly. On the other hand, BOD 5 is the standard method for determining the concentration of oxygen demand required by microorganisms to decompose organic matter, which occurs in a minimum period of 5 days. ĬOD is the standard analysis for measuring oxygen consumption during the decomposition of organic and oxidizing of inorganic matter, through oxidizing agents such as potassium dichromate in a short time (equivalent to hours). E., & APH Association – 5310) analysis is being extensively more used than the other two. Nevertheless, currently the Total Organic Carbon (TOC) (Federation W. E., & APH Association – 5220) and Biochemical Oxygen Demand (BOD 5) (Federation W. Thus, determining their presence and concentration requires a different kind of analysis, traditionally measured by two tests, Chemical Oxygen Demand (COD) (Federation W. Organic matter determination represents one of the most significant challenges since it includes all carbonaceous compounds and some other elements, such as hydrogen, oxygen, and nitrogen. Wastewater treatment requires continuous monitoring of pollutants, therefore, analyses criteria for this type of water have been established, i.e., temperature, fats and oils, sedimentable solids, pH, conductivity, inorganic ions concentration, etc.

Fast and simple online determination of cod