Pressure and specific energy requirements for densification of compost derived from swine solid fraction

  • N. Pampuro Istituto per le Macchine Agricole e Movimento Terra (IMAMOTER), Consiglio Nazionale delle Ricerche (CNR). Strada delle Cacce, 73. 10135 Torino
  • A. Facello Istituto per le Macchine Agricole e Movimento Terra (IMAMOTER), Consiglio Nazionale delle Ricerche (CNR). Strada delle Cacce, 73. 10135 Torino
  • E. Cavallo Istituto per le Macchine Agricole e Movimento Terra (IMAMOTER), Consiglio Nazionale delle Ricerche (CNR). Strada delle Cacce, 73. 10135 Torino
Keywords: hydraulic press, density, swine manure, composting

Abstract

Compost derived from swine solid fraction is a low density material (bulk density less than 500 kg m-3). This makes it costly to transport from production sites to areas where it could be effectively utilized for value-added applications such as in soil fertilization. Densification is one possible way to enhance the storage and transportation of the compost. This study therefore investigates the effect of pressure (20-110 MPa) and pressure application time (5-120 s) on the compaction characteristics of compost derived from swine solid fraction. Two different types of material have been used: composted swine solid fraction derived from mechanical separation and compost obtained by mixing the first material with wood chips. Results obtained showed that both the pressure applied and the pressure application time significantly affect the density of the compacted samples; while the specific compression energy is significantly affected only by the pressure. Best predictor equations were developed to predict compact density and the specific compression energy required by the densification process. The specific compression energy values based on the results from this study (6-32 kJ kg-1) were significantly lower than the specific energy required to manufacture pellets from biomass feedstock (typically 19-90 kJ kg-1).

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References

Adapa PK, Schoenau GJ, Tabil LG, Sokhansanj S, Singh A, 2006. Compression of fractionated sun-cured and dehydrated alfalfa chops into cubes – Specific energy models. Bioresour Technol 98: 38-45. http://dx.doi.org/10.1016/j.biortech.2005.11.032 PMid:16442280

Adapa P, Tabil L, Schoenau G, 2009. Compaction characteristics of barley, canola, oat and wheat straw. Biosyst Eng 204: 335-344. http://dx.doi.org/10.1016/j.biosystemseng.2009.06.022

ASABE, 2006. ASAE S358.2 – Moisture measurement – Forages. In: American Society of Agricultural and Biological Engineers Standards, St. Joseph, MI, USA. 608 pp.

ASABE, 2007. ASAE S269.4 – Cubes, pellets, and crumbles – Definitions and methods for determining density, durability, and moisture content. In: American Society of Agricultural and Biological Engineers Standards, St. Joseph, MI, USA. pp: 624-626.

Benitez C, Bellindo E, Gonzales GL, Medina M, 1998. Influence of pedalogical and climatic factors on nitrogen mineralization in soils treated with pig slurry compost. Bioresour Technol 63: 147-151. http://dx.doi.org/10.1016/S0960-8524(97)00072-2

Bernal MP, Alburquerque JA, Moral R, 2009. Composting of animal manures and chemical criteria for compost maturity assessment. A review. Bioresour Technol 100: 5444-5453. http://dx.doi.org/10.1016/j.biortech.2008.11.027 PMid:19119002

Bernhart M, Fasina OO, 2009. Moisture effect on the storage, handling and flow properties of poultry litter. Waste Manage 29: 1392-1398. http://dx.doi.org/10.1016/j.wasman.2008.09.005 PMid:18990556

Bernhart M, Fasina OO, Fulton F, Wood CW, 2010. Compaction of poultry litter. Bioresour Technol 101: 234-238. http://dx.doi.org/10.1016/j.biortech.2009.08.030 PMid:19733062

Caceres F, Flotats X, Marfa O, 2006. Changes in the chemical and physiochemical properties of the solid fraction of cattle slurry during composting using different aeration strategies. Waste Manage 26: 1081-1091. http://dx.doi.org/10.1016/j.wasman.2005.06.013 PMid:16146687

Colley Z, Fasina OO, Bransby D, Lee YY, 2006. Moisture effect on the physical characteristics of switch grass pellets. T ASABE 49: 1845-1851.

Demirbass A, 1999. Physical properties of briquettes from waste paper and straw mixture. Energ Convers Manage 40: 437-445. http://dx.doi.org/10.1016/S0196-8904(98)00111-3

Dinuccio E, Gioelli F, Balsari P, Dorno N, 2012. Ammonia losses from the storage and application of raw and chemo-mechanically separated slurry. Agr Ecosyst Environ 153: 16-23. http://dx.doi.org/10.1016/j.agee.2012.02.015

Fangueiro D, Lopes C, Surgy S, Vasconcelos E, 2012. Effect of the pig slurry separation techniques on the characteristics and potential availability of N to plants in the resulting liquid and solid fractions. Biosyst Eng 113: 187-194. http://dx.doi.org/10.1016/j.biosystemseng.2012.07.006

Garcia MC, Szogi AA, Vanotti MB, Chastain JP, Millner PD, 2009. Enhanced solid-liquid separation of dairy manure with natural flocculants. Bioresour Technol 100: 5417-5423. http://dx.doi.org/10.1016/j.biortech.2008.11.012 PMid:19071016

Imbeach M, 1998. Composting piggery waste: a review. Bioresour Technol 63: 197-203. http://dx.doi.org/10.1016/S0960-8524(97)00165-X

Kaliyan N, Vance Morey R, 2009. Factors affecting strength and durability of densified biomass products. Biomass Bioenerg 33: 337-359. http://dx.doi.org/10.1016/j.biombioe.2008.08.005

Ko HJ, Kim KY, Kim HT, Kim CN, Umeda M, 2008. Evaluation of maturity parameters and heavy metal contents in composts made from animal manure. Waste Manage 28: 813-820. http://dx.doi.org/10.1016/j.wasman.2007.05.010 PMid:17629693

Kunz A, Miele M, Steinmetz RLR, 2009. Advanced swine manure treatment and utilization in Brazil. Bioresour Technol 100: 5485-5489. http://dx.doi.org/10.1016/j.biortech.2008.10.039 PMid:19128963

Li Y, Liu H, 2000. High-pressure densification of wood residues to form an upgraded fuel. Biomass Bioenerg 19: 177-186. http://dx.doi.org/10.1016/S0961-9534(00)00026-X

Mani S, Tabil LG, Sokhansanj S, 2003. An overview of compaction of biomass grinds. Powder Handling and Processing 15: 160-168.

Mani S, Tabil LG, Sokhansanj S, 2004. Evaluation of compaction equations applied to four biomass species. Can Biosyst Eng 46: 351-361.

Mani S, Tabil LG, Sokhansanj S, 2006. Specific energy requirement for compacting corn stover. Bioresour Technol 30: 648-654.

McMullen J, Fasina OO, Wood CW, Feg Y, 2005. Storage and handling characteristics of pellets from poultry litter. Appl Eng Agric 21: 645-651.

Miao Z, Phillips JW, Grift TE, Mathanker SK, 2013. Energy and pressure requirement for compression of Miscanthus giganteus to an extreme density. Biosyst Eng 114: 21-25. http://dx.doi.org/10.1016/j.biosystemseng.2012.10.002

Møller HB, Lund I, Sommer SG, 2000. Solid-liquid separation of livestock slurry: efficiency and cost. Bioresour Technol 74: 223-229. http://dx.doi.org/10.1016/S0960-8524(00)00016-X

Nolan T, Troy SM, Healy MG, Kwapinski W, Leahy JJ, Lawlor PG, 2011. Characterization of compost produced from separated pig manure and a variety of bulking agents at low initial C/N ratios. Bioresour Technol 102: 7131-7138. http://dx.doi.org/10.1016/j.biortech.2011.04.066 PMid:21570832

Obernberger I, Thek G, 2004. Physical characterization and chemical composition of densified biomass fuels with regard to their combustion behavior. Biomass Bioenerg 27: 653-669. http://dx.doi.org/10.1016/j.biombioe.2003.07.006

Pampuro N, Santoro E, Cavallo E, 2010. Evaluation of maturity and fertilizer capacity of compost derived from swine solid fraction. Proc Int Conf Agric Eng, Clermont-Ferrand (France), Sept 6-8, Paper n° 028. PMid:20919926

Pampuro N, Facello A, Cavallo E, 2012. Density-pressure relationship in densification of swine solid fraction. Proc Int Conf Agric Eng, Valencia (Spain), July 8-12, Paper n° C1525.

Rao JR, Watabe M, Stewart TA, Millar BC, Moore JE, 2007. Pelleted organo-mineral fertilizers from composted pig slurry solids, animal wastes and spent mushroom compost for amenity grassland. Waste Manage 27: 1117-1128. http://dx.doi.org/10.1016/j.wasman.2006.06.010 PMid:16971105

Santamarta LC, Ramirez AD, Godwin RJ, White DR, Chaney K, Humphries AC, 2012. Energy use and carbon dioxide emissions associated with the compression of oilseed rape straw. Proc Int Conf Agric Eng, Valencia (Spain), July 8-12. PMCid:PMC3293853

Sokhansanj S, Wood HC, 1991. Engineering aspects of forage processing for pellets, cubes, dense chops and bales. Adv Feed Technol 5: 6-23.

Sokhansanj S, Turhollow AF, 2004. Biomass densification and cubing operation costs for corn stover. Appl Eng Agr 20: 495-499.

Tabil LG, Sokhansanj S, 1996. Process conditions affecting the physical quality of alfalfa pellets. Appl Eng Agr 12: 345-350.

Published
2013-07-02
How to Cite
Pampuro, N., Facello, A., & Cavallo, E. (2013). Pressure and specific energy requirements for densification of compost derived from swine solid fraction. Spanish Journal of Agricultural Research, 11(3), 678-684. https://doi.org/10.5424/sjar/2013113-4062
Section
Agricultural engineering