EP1792877-A1  FEITKENHAUER H ET AL: "On-line titration of volatile fatty acids for the process control of anaerobic digestion plants" WATER RESEARCH, ELSEVIER, AMSTERDAM, NL, vol. 36, no. 1, January 2002 (2002-01), pages 212-218, XP004321684 ISSN: 0043-1354;  PAULO P L ET AL: "EFFECT OF COBALT ON THE ANAEROBIC THERMOPHILIC CONVERSION OF METHANOL" BIOTECHNOLOGY AND BIOENGINEERING, WILEY & SONS, HOBOKEN, NJ, US, vol. 85, no. 4, 20 February 2004 (2004-02-20), pages 434-441, XP001237073 ISSN: 0006-3592;  PAULO P L ET AL: "EFFECT OF COBALT ON THE ANAEROBIC THERMOPHILIC CONVERSION OF METHANOL" BIOTECHNOLOGY AND BIOENGINEERING, WILEY 0x26 SONS, HOBOKEN, NJ, US, vol. 85, no. 4, 20 February 2004 (2004-02-20), pages 434-441, XP001237073 ISSN: 0006-3592;  PEREIRA M A ET AL: "ANAEROBIC BIODEGRADATION OF OLEIC AND PALMITIC ACIDS: EVIDENCE OF MASS TRANSFER LIMITATIONS CAUSED BY LONG CHAIN FATTY ACID ACCUMULATION ONTO THE ANAEROBIC SLUDGE" BIOTECHNOLOGY AND BIOENGINEERING, WILEY & SONS, HOBOKEN, NJ, US, vol. 92, no. 1, 5 October 2005 (2005-10-05), pages 15-23, XP001237147 ISSN: 0006-3592;  PEREIRA M A ET AL: "ANAEROBIC BIODEGRADATION OF OLEIC AND PALMITIC ACIDS: EVIDENCE OF MASS TRANSFER LIMITATIONS CAUSED BY LONG CHAIN FATTY ACID ACCUMULATION ONTO THE ANAEROBIC SLUDGE" BIOTECHNOLOGY AND BIOENGINEERING, WILEY 0x26 SONS, HOBOKEN, NJ, US, vol. 92, no. 1, 5 October 2005 (2005-10-05), pages 15-23, XP001237147 ISSN: 0006-3592;  RINZEMA A ET AL: "BACTERICIDAL EFFECT OF LONG CHAIN FATTY ACIDS IN ANAEROBIC DIGESTION" WATER ENVIRONMENT RESEARCH, WATER ENVIRONMENT FEDERATION, ALEXANDRIA, VA, US, vol. 66, no. 1, January 1994 (1994-01), pages 40-49, XP000420732 ISSN: 1061-4303;  PAULO P L ET AL: "EFFECT OF COBALT ON THE ANAEROBIC THERMOPHILIC CONVERSION OF METHANOL" BIOTECHNOLOGY AND BIOENGINEERING, WILEY&SONS, HOBOKEN, NJ, US, vol. 85, no. 4, 20 February 2004 (2004-02-20), pages 434-441, XP001237073 ISSN: 0006-3592;  PEREIRA M A ET AL: "ANAEROBIC BIODEGRADATION OF OLEIC AND PALMITIC ACIDS: EVIDENCE OF MASS TRANSFER LIMITATIONS CAUSED BY LONG CHAIN FATTY ACID ACCUMULATION ONTO THE ANAEROBIC SLUDGE" BIOTECHNOLOGY AND BIOENGINEERING, WILEY&SONS, HOBOKEN, NJ, US, vol. 92, no. 1, 5 October 2005 (2005-10-05), pages 15-23, XP001237147 ISSN: 0006-3592;  No relevant documents disclosedEP1792877-B1  PAULO P L ET AL: "EFFECT OF COBALT ON THE ANAEROBIC THERMOPHILIC CONVERSION OF METHANOL" BIOTECHNOLOGY AND BIOENGINEERING, WILEY&SONS, HOBOKEN, NJ, US, vol. 85, no. 4, 20 February 2004 (2004-02-20), pages 434-441, XP001237073 ISSN: 0006-3592;  FEITKENHAUER H ET AL: "On-line titration of volatile fatty acids for the process control of anaerobic digestion plants" WATER RESEARCH, ELSEVIER, AMSTERDAM, NL, vol. 36, no. 1, January 2002 (2002-01), pages 212-218, XP004321684 ISSN: 0043-1354;  PEREIRA M A ET AL: "ANAEROBIC BIODEGRADATION OF OLEIC AND PALMITIC ACIDS: EVIDENCE OF MASS TRANSFER LIMITATIONS CAUSED BY LONG CHAIN FATTY ACID ACCUMULATION ONTO THE ANAEROBIC SLUDGE" BIOTECHNOLOGY AND BIOENGINEERING, WILEY&SONS, HOBOKEN, NJ, US, vol. 92, no. 1, 5 October 2005 (2005-10-05), pages 15-23, XP001237147 ISSN: 0006-3592;  RINZEMA A ET AL: "BACTERICIDAL EFFECT OF LONG CHAIN FATTY ACIDS IN ANAEROBIC DIGESTION" WATER ENVIRONMENT RESEARCH, WATER ENVIRONMENT FEDERATION, ALEXANDRIA, VA, US, vol. 66, no. 1, January 1994 (1994-01), pages 40-49, XP000420732 ISSN: 1061-4303