Composting and storage of organic household waste with different litter amendments. II: nitrogen turnover and losses.

Abstract Composting of N-rich wastes can be associated with substantial gaseous N losses, which mean loss of an essential plant nutrient but may also lead to environmental pollution. We investigated nitrogen dynamics and losses in household waste mixtures with different litter additives during composting, maturation and storage. Standardized, organic household waste was composted mixed with six litter amendments; straw, leaves, hardwood, softwood, paper and sphagnum peat. Samples were analysed for total and inorganic N and pH. Both the addition and the type of litter amendment greatly influenced pH changes and formation of nitrate during composting. Net N losses after 590 days were 43–62% in mixtures with litter additions, being lowest in the peat and the straw mixtures and highest in the paper mixture, and 70% in the control without litter. A conclusion of the study was that there is no obvious way to efficiently decrease N losses during composting through addition of litter materials.

[1]  A. Lind,et al.  Loss of Nitrous Oxide from Animal Manure in Dungheaps , 1993 .

[2]  B. Berg,et al.  Lignin and holocellulose relations during long-term decomposition of some forest litters. Long-term decomposition in a Scots pine forest. IV , 1984 .

[3]  H. Kirchmann,et al.  Separately collected organic household wastes. Chemical composition and composting characteristics , 1994 .

[4]  N. Brink.  Composting of Food Waste with Straw and other Carbon Sources for Nitrogen Catching , 1995 .

[5]  E. Witter,et al.  The Potential of Sewage Sludge and Composting in a Nitrogen Recycling Strategy for Agriculture , 1987 .

[6]  N. Bolan,et al.  Losses and transformation of nitrogen during composting of poultry manure with different amendments: An incubation experiment , 1994 .

[7]  E. Witter,et al.  Nitrogen losses during the composting of sewage sludge, and the effectiveness of clay soil, zeolite, and compost in adsorbing the volatilized ammonia , 1988 .

[8]  H. Kirchmann,et al.  Losses, plant uptake and utilisation of manure nitrogen during a production cycle [cattle manure, poultry manure, NH3 volatilisation, denitrification, nonsymbiotic N2 fixation] , 1985 .

[9]  Paul Geladi,et al.  Principal Component Analysis , 1987, Comprehensive Chemometrics.

[10]  H. Kirchmann,et al.  Composting and storage of organic household waste with different litter amendments. I: carbon turnover , 2000 .

[11]  R. Izaurralde,et al.  Cycles of Soil , 2000 .

[12]  C. R. Mote,et al.  Variations in the composting process for different organic carbon sources. , 1980 .

[13]  O. Martins,et al.  Loss of nitrogenous compounds during composting of animal wastes , 1992 .

[14]  M. Alexander.  Introduction to Soil Microbiology , 1978 .