Bioremediation of organic wastes

Wastes, the environment and economics are three clearly interconnected topics. Hence the importance of such an unloved problem as the first.

During my career, I have tried to develop techniques that permit to broaden our scientific knowledge of organic wastes, and to offer the possibility of using them in new, effective, environmentally correct, economically viable, and socially acceptable ways, converting them whenever possible into “resources” as opposed to merely “waste” products.

The research is focused in two lines:

  • Optimisation of parameters for composting process.
  • Compost stability and maturity index.


  1. Converting sea-algal waste into a valuable bio-resource. Research Grants Tauw Fundation. July 2019 – December 2021.
  2. Improvement of biofilters by inoculation of fungi to reduce odors in composting plants. Bilateral project CSIC-CNR. February 2011 – February 2012.
  3. Project Optimization of the composting process to minimize its environmental effects. Funded by: C.I.C.Y.T. (Spanish Commission for Science and Technology). June 2007 – June 2010.
  4. Broadening the use of compost in Southern Europe (Life Environment Demonstration Project). Funded by: EU. July 2001 – July 2003.
  5. Characterization of olive wastes from two-phase extraction industries. Funded by: Ministry of Agriculture and Fisheries of the Andalusian Government. January 2001 – January 2002.
  6. Recovery of organic matter from waste and food waste. Funded by: Ministry of Italian Industry. August 1995 – December 1998.
  7. Production and Use of Compost and derivatives under the conditions set forth in the MSW Master Plan. Funded by: Environment Agency. Andalusian Government. August 1994 – December 1996.


  1. Madejón, E., Panettieri, M., Madejón, P., Pérez-de-Mora, A. (2022) Composting as Sustainable Managing Option for Seaweed Blooms on Recreational Beaches. Waste and Biomass Valorization 13(2), pp. 863–875. DOI 10.1007/s12649-021-01548-1
  2. Delgado-Rodríguez, M, Ruiz-Montoya, M, Giraldez, I, López, R, Madejón, E, Díaz, M.J. (2012). Use of electronic nose and GC-MS in detection and monitoring some VOC. Atmospheric Environment 51, 278-285. DOI: 10.1016/j.atmosenv.2012.01.006.
  3. Delgado-Rodríguez, M, Ruiz-Montoya, M, Giraldez, I, López, R, Madejón, E, Díaz, M.J. (2012). Effect of aereation rate and moisture content on the emissions of selected VOCs during municipal solid waste composting. Journal of Material Cycles and Waste Management 14 (4), 371-378. DOI: 10.1007/s10163-012-0080-y.
  4. Delgado-Rodríguez, M., Ruiz-Montoya, M., Giraldez, I., López, R., Madejón, E., Díaz, M.J. (2011). Influence of control parameters in VOCs evolution during MSW trimming residues composting. Journal of Agricultural and Food Chemistry, 59(24), 13035-13042. DOI: 10.1021/jf2036017.
  5. Díaz, M.J., Madejón, E., Cabrera, F., Jiménez, L., De Bertoldi, M. (2004). Using a second-order polynomial model to determine the optimum vinasse/grape marc ratio for in-vessel composting. Compost Science and Utilization. 12(3), 273-279.
  6. Díaz, M.J., Eugenio, M.E., Jiménez, L., Madejón, E., Cabrera, F. (2004). Modelling vinasse/cotton waste ratio incubation for optimum composting. Chemical Engineering Journal 93(3), 233-240. DOI: 10.1023/A:1022608828694.
  7. Madejón, E., Jesús Díaz, M., López, R., Cabrera, F. (2002). New approaches to establish optimum moisture content for compostable materials. Bioresource Technology 85(1), 73-78. DOI: 10.1016/S0960-8524(02)00030-5.
  8. Diaz, M.J., Madejón, E., López, F., López, R., Cabrera, F. (2002). Optimization of the rate vinasse/grape marc for co-composting process. Process Biochemistry 37(10), 1143-1150. DOI: 10.1016/S0032-9592(01)00327-2.
  9. Díaz, M.J.,Madejón, E., López, F., López, R., Cabrera, F. (2002). Composting of vinasse and cotton gin waste by using two different systems. Resources, Conservation and Recycling 34(4), 235-248. DOI: 10.1016/S0921-3449(01)00109-4.
  10. Díaz, M.J., Madejón, E., Ariza, J., López, R., Cabrera, F. (2002). Cocomposting of beet vinasse and grape marc in windrows and static pile systems. Compost Science and Utilization 10(3), pp. 258-269. DOI:10.1080/1065657X.2002.10702088
  11. Tomati, U., Madejón, E., Galli, E., Capitani, D., Segre, A.L. (2001). Structural changes of humic acids during Olive Mill Pomace composting. Compost Science and Utilization 9(2), 134-142. DOI:10.1080/1065657X.2001.10702027
  12. Tomati, U., Madejón, E., Galli, E. (2000). Evolution of humic acid molecular weight as an index of compost stability. Compost Science and Utilization 8(2), 108-115. DOI: 10.1080/1065657X.2000.10701756.
  13. Madejón, E., Galli, E., Tomati, U. (1998). Composting of wastes produced by low water consuming olive mill technology. Agrochimica 42(3-4), 135-146.