Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Agricultural valorisation of de-inking paper sludge as component of substrates
Year:2008
Research Areas
  • Chemistry,
  • Agriculture
Information
Abstract
Paper pulp manufacturing separates cellulose fibres using both, mechanical and chemical process and generates important amount of waste materials. In recent years, an increasing proportion of recycled fibres are used in paper industries due to their important environmental and economical benefits. A ton of pulp produced from recycled paper requires 60% less energy to manufacture than a ton of bleached virgin kraft pulp [1]. However, paper recycling results in the production of large amounts of de-inking paper sludge composed by removed inks, clay fillers, coating of used paper, chemical additives and some cellulose fibres. In Spain, more than 200.000t of DPS were produced during 2006. Due to their high organic matter content, DPS could be used as amendment to improve or restore soil fertility and biological functioning [2, 3]. Nevertheless, it is necessary to add a supplemental N due to the high ratio C/N of DPS. One of these sources could be sewage sludges (SL). The present works deals with the study of feasibility of using DPS to produce substrates for plant production. The substrates tested were four mixtures of DPS and SL: 100% HP, 90% HP + 10% L (v/v), 80% HP + 20% L (v/v) and 70% HP + 30% L (v/v). Experimental results shown that the substrate 70% HP + 30% L presented the best hydrophysical properties while the others treatments presented limitations mainly due to their low available water values. Also, the biological activity was higher in the substrate 70% HP + 30% L according to its lower ratio C/N.
International
Si
Congress
EUROSOIL 2008
960
Place
Viena
Reviewers
Si
ISBN/ISSN
978-3-902382-05-4
Start Date
25/08/2008
End Date
29/08/2008
From page
242
To page
243
EUROSOIL 2008
Participants
  • Autor: Gabriel Gasco Guerrero (UPM)
  • Autor: Francisca Guerrero Lopez (UPM)
  • Autor: Sandra Paulina Barriga Curillo (UPM)
  • Autor: Ana Maria Mendez Lazaro (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Valorización de Recursos
  • Departamento: Edafología
  • Departamento: Ingeniería de Materiales
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)