Biogas and nutrients from blackwater, lawn cuttings and grease trap residues—experiments for Hamburg’s Jenfelder Au district

Table 1 Methods for substrate analysis

Parameter		Guideline/equipment
Dry matter content	DM in % FM	DIN EN 12880 [8]
Organic dry matter content	oDM in % DM	DIN EN 12879 [9]
Chemical oxygen demand	COD in mg/l	Cuvette test by Hach Lange, Germany
Total organic carbon	TOC in mg/l	TOC/TN analyser multi N/C 3000 by Analytika Jena, Germany
Total nitrogen	TN in mg/l	TOC/TN analyser multi N/C 3000 by Analytika Jena, Germany
Ammoniacal nitrogen	NH₄ ⁺/NH₃-N in mg/l	Destillation unit K350 by Büchi, Germany
Total phosphorus	TP in mg/l	Cuvette test by Hach Lange, Germany
pH value	pH	pH meter, model 323 by WTW, Germany
Ratio volatile fatty acids to total inorganic carbonate	FOS/TAC	Automatized titrator model FOS/TAC 2000 by Pronova, Germany

ISSN: 2192-0567