Process Biogas Data and Predict Biogas Production
Calculate Oxygen Demand
Calculate Cumulative Biogas Production
Fit a First-Order Model to Biogas or Other Data
Calculate Biogas Production from Gas Density Data (GD-BMP)
Calculate Biogas Production from Gravimetric Data
Calculate Cumulative Biogas Production from Pressure Data
Calculate Cumulative Biogas Production from Volumetric Data
Interpolate Biogas Composition or Cumulative Production
Calculate Biogas Production Gravimetrically
Calculate Molar Mass of Compound
Claculate Inoculum and Substrate Mass for BMP Experiments
Predict Biogas Production
Correct Gas Volume to 'Standard' Conditions
Summarise and Normalise Cumulative Methane Production
Calculate Mass of Biogas
Calculate Moles of a Gas
Functions for calculating biochemical methane potential (BMP) from laboratory measurements and other types of data processing and prediction useful for biogas research. Raw laboratory measurements for diverse methods (volumetric, manometric, gravimetric, gas density) can be processed to calculate BMP. Theoretical maximum BMP or methane or biogas yield can be predicted from various measures of substrate composition. Molar mass and calculated oxygen demand (COD') can be determined from a chemical formula. Measured gas volume can be corrected for water vapor and to standard (or user-defined) temperature and pressure. Gas quantity can be converted between volume, mass, and moles. A function for planning BMP experiments can consider multiple constraints in suggesting substrate or inoculum quantities, and check for problems. Inoculum and substrate mass can be determined for planning BMP experiments. Finally, a set of first-order models can be fit to measured methane production rate or cumulative yield in order to extract estimates of ultimate yield and kinetic constants. See Hafner et al. (2018) <doi:10.1016/j.softx.2018.06.005> for details. OBA is a web application that provides access to some of the package functionality: <https://biotransformers.shinyapps.io/oba1/>. The Standard BMP Methods website documents the calculations in detail: <https://www.dbfz.de/en/BMP>.