A respirometric method for characterising the organic composition and biodegradation kinetics and the temperature influence on the biodegradation kinetics, for a mixture of sludge and bulking agent to be co-composted.

A respirometric method was set up to study kinetics of biological reactions involved in the treatment of organic wastes-sludge mixed with pine barks--by composting. Oxygen consumption rates of this type of mixture were monitored during 10-20 days, using a 10 l respirometric cell kept at constant temperature and moisture. Oxygen consumption kinetics were modelled and organic matter composition was characterised as biomass, easily-biodegradable, slowly-biodegradable and non-biodegradable organic matter. The influence of temperature on kinetics was tested. Results show that this respirometric method is a useful tool for the characterisation of solid organic matter biodegradability and for the modelling of the biological kinetics of the composting process.

[1]  M. Spérandio.  Developpement d'une procedure de compartimentation d'une eau residuaire urbaine et application a la modelisation dynamique de procedes a boues activees , 1998 .

[2]  Denis Dochain,et al.  Structural Identifiability of Biokinetic Models of Activated-sludge Respiration , 1995 .

[3]  C. L. Davis,et al.  Changes in microbial population numbers during the composting of pine bark , 1992 .

[4]  J P Flandrois,et al.  An unexpected correlation between cardinal temperatures of microbial growth highlighted by a new model. , 1993, Journal of theoretical biology.

[5]  O. Levenspiel.  Chemical Reaction Engineering , 1972 .

[6]  Laurence V. Madden,et al.  Oxygen respirometry to assess stability and maturity of composted municipal solid waste , 1994 .

[7]  J. Vestal,et al.  Biokinetic analyses of adaptation and succession: microbial activity in composting municipal sewage sludge , 1984, Applied and environmental microbiology.

[8]  J. Kaiser,et al.  Modelling composting as a microbial ecosystem: a simulation approach , 1996 .

[9]  H. Nielsen,et al.  A Model for Temperature Dependency of Thermophilic Composting Process Rate , 2002 .

[10]  Mogens Henze,et al.  Activated sludge models ASM1, ASM2, ASM2d and ASM3 , 2015 .

[11]  K. Lasaridi,et al.  Development and Demonstration Of a Thermogradient Respirometer , 1996 .

[12]  G. Andreottola,et al.  Experimental validation of a simulation and design model for nitrogen removal in sequencing batch reactors , 1997 .

[13]  Fabrizio Adani,et al.  Determination of Biological Stability by Oxygen Uptake on Municipal Solid Waste and Derived Products , 2001 .

[14]  David F. Ollis,et al.  Biochemical Engineering Fundamentals , 1976 .

[15]  K. Das,et al.  The influence of temperature and moisture contents regimes on the aerobic microbial activity of a biosolids composting blend. , 2003, Bioresource technology.

[16]  B. Eliosov,et al.  Hydrolysis of particulate organics in activated sludge systems , 1995 .

[17]  E. Stentiford.  THE SPECIFIC OXYGEN UPTAKE RATE (SOUR) , 2002 .

[18]  Peter A. Vanrolleghem,et al.  Respirometry in Control of the Activated Sludge Process: Principles , 1998 .

[19]  R. Haug.  The Practical Handbook of Compost Engineering , 1993 .

[20]  S. Mathieu,et al.  Estimation of wastewater biodegradable COD fractions by combining respirometric experiments in various So/Xo ratios , 2000 .

[21]  Katia Lasaridi,et al.  A simple respirometric technique for assessing compost stability , 1998 .