feedVol dataset

Biogas Volume from Batch Reactors

Cumulative standardized measurements of biogas volume from 12 batch bottles, organized in a wide format. data

data("feedVol")

Format

A data frame with 44 observations on the following 13 variables (note that all biogas volume columns, 2-13, are similar):

• time.d: elapsed time of volume measurements in days, a numeric vector.
• 1: cumulative standardized volume of biogas produced at time given in time from bottle 1 in mL, a numeric vector.
• 2: volume of biogas from bottle 2 .
• 3: volume of biogas from bottle 3 .
• 4: volume of biogas from bottle 4 .
• 5: volume of biogas from bottle 5 .
• 6: volume of biogas from bottle 6 .
• 7: volume of biogas from bottle 7 .
• 8: volume of biogas from bottle 8 .
• 9: volume of biogas from bottle 9 .
• 10: volume of biogas from bottle 10 .
• 11: volume of biogas from bottle 11 .
• 12: volume of biogas from bottle 12 .

Details

These data are meant to be example data for calcBgVol and summBg. Inoculum was digestate from a stable laboratory reactor (400 L) operated at mesophilic temperatures (38 degrees C) and a retention time of ca. 98 days Substrates were cellulose, wheat straw (WS), and animal feed ingredients (FI). Additinally, 1 mL each of a vitamin mixture and trace element solution was added to each BMP bottle. BMP tests were operated with a total volume of ca. 400 mL at 38 degrees C.

Biogas productions was measured using the online volumtric AMPTS II method. Carbon dioxide was produced using an alkaline trap, so biogas volume is equal to methane volume.

Data in feedSetup and feedVol are from the same bottles.

Source

Data were originally collected by Soeren Weinrich and others at DBFZ in Leipzig Germany.

Examples

data(feedVol)