biogas (version 1.61)

massw: Mass Change of Batch Reactors

Description

Mass measurements for 9 batch anaerobic reactors in a “wide” format (separate columns for initial and final mass).

Usage

data("massw")

Format

A data frame with 9 observations on the following 3 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_10, 2_11, and 2_12

start

total reactor mass at the start of its incubation in g, a numeric vector.

end

total reactor mass at the end of its incubation in g, a numeric vector.

Details

These data are meant to be example data for application of mass2vol, for gravimetric determination of biogas production. Reactors were 500 mL glass serum bottles with butyl rubber septa and screw caps. Masses were measured with an electronic balance to 100 mg. These are the same data as in mass, but simply in a “wide” format. Data in vol, mass, massw, comp, and setup are from the same reactors.

Examples

data(massw)