Development and Validation of a Low-Cost Gas Density Method for Measuring Biochemical Methane Potential (BMP)

TY - JOUR

T1 - Development and Validation of a Low-Cost Gas Density Method for Measuring Biochemical Methane Potential (BMP)

AU - Justesen, Camilla G.

AU - Astals, Sergi

AU - Mortensen, Jacob R.

AU - Thorsen, Rasmus

AU - Koch, Konrad

AU - Weinrich, Soeren

AU - Triolo, Jin Mi

AU - Hafner, Sasha D.

PY - 2019/12

Y1 - 2019/12

N2 - Accurate determination of biochemical methane potential (BMP) is important for both biogas research and practice. However, access to laboratory equipment limits the capacity of small laboratories or biogas plants to conduct reliable BMP assays, especially in low- and middle-income countries. This paper describes the development and validation of a new gas density-based method for measuring BMP (GD-BMP). In the GD-BMP method, biogas composition is determined from biogas density. Biogas density is based on bottle mass loss and biogas volume, and these can be accurately measured using only a standard laboratory scale, inexpensive syringes, and a simple manometer. Results from four experiments carried out in three different laboratories showed that the GD-BMP method is both accurate (no significant bias compared to gravimetric or volumetric methods with biogas analysis by gas chromatography) and precise (

AB - Accurate determination of biochemical methane potential (BMP) is important for both biogas research and practice. However, access to laboratory equipment limits the capacity of small laboratories or biogas plants to conduct reliable BMP assays, especially in low- and middle-income countries. This paper describes the development and validation of a new gas density-based method for measuring BMP (GD-BMP). In the GD-BMP method, biogas composition is determined from biogas density. Biogas density is based on bottle mass loss and biogas volume, and these can be accurately measured using only a standard laboratory scale, inexpensive syringes, and a simple manometer. Results from four experiments carried out in three different laboratories showed that the GD-BMP method is both accurate (no significant bias compared to gravimetric or volumetric methods with biogas analysis by gas chromatography) and precise (

KW - ANAEROBIC-DIGESTION

KW - BIOGAS PRODUCTION

KW - anaerobic digestion

KW - batch assays

KW - biogas technology

KW - biomethane potential

KW - gravimetric determination

KW - inexpensive laboratory method

KW - inter-laboratory comparison

UR - http://www.scopus.com/inward/record.url?scp=85079586401&partnerID=8YFLogxK

U2 - 10.3390/w11122431

DO - 10.3390/w11122431

M3 - Journal article

SN - 2073-4441

VL - 11

JO - Water

JF - Water

IS - 12

M1 - 2431

ER -