comp {biogas}

Methane Content of Biogas

Description

Methane content (biogas composition) measurements from nine batch reactors.

Usage

data("comp")

Format

A data frame with 132 observations on the following 4 variables.

id

identification code, a unique value for each reactor in the dataset. A factor with levels 2_1, 2_2, 2_3, 2_4, 2_5, 2_6, 2_7, 2_8, 2_9, 2_10, 2_11, and 2_12

date.time

date and time of mass measurement, a POSIXct object.

days

elapsed time of mass measurements (from reactor setup) in days, a numeric vector.

xCH4

biogas methane content as a mole fraction, excluding water and all other gases other than carbon dioxide, a numeric vector

Details

These data are meant to be example data for multiple functions, e.g., interp, cumBg, or summBg. Reactors were 500 mL glass serum bottles with butyl rubber septa and screw caps. Methane and carbon dioxide contents were determined by gas chromatography using a thermal conductivity detector and normalised so methane and carbon dioxide sum to 1.0. Data in vol, mass, comp, and setup are from the same reactors.

Source

Measurements by Charlotte Rennuit and Ali Heidarzadeh Vazifehkhoran.

Examples

data(comp)