Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Effects on suspensions dispersed particles & water purification produced by Cardon Dato mucilage, iron chloride, alum, and their combinations
Year:2008
Research Areas
  • Chemistry,
  • Agriculture
Information
Abstract
Pressure to use dispersive soils has increased worldwide, soil conservation against erosion is crucial and water contamination by eroded materials is a relevant problem. Then, research on organic and inorganic conditioners for reducing soils¿ particles dispersion, improving soils? properties as structure and permeability, and reducing water sources contamination is necessary. Effects of a Cardon Dato (Stenocereus griseus (Haw.) F. Buxb) mucilage (CD), FeCl3.6H2O and AlCl3.6H2O, on flocculating suspensions and arrangement of suspended particles from a Spain kaolin were studied. Suspensions were treated with the following solutions: 50 mg L-1 CD; 30 mg L-1 CD; 10 mg L-1 CD; 3 cmol+ kg-1 Fe+3 ; 3 cmol+ kg-1 Al+3; 1.5 cmol+ kg-1 Fe+3 + 1.5 cmol+ kg-1 Al+3; 50 mg L-1 CD + 1.5 cmol+ kg-1 Fe+3; 50 mg L-1 CD + 1.5 cmol+ kg-1 Al+3; 50 mg L-1 CD + 1.5 cmol+ kg-1 Fe+3 + 1.5 cmol+ kg-1 Al+3; 5 mg L-1 CD + 1.5 cmol+ kg-1 Fe+3 + 1.5 cmol+ kg-1 Al+3; distilled water; 10 mg L-1 of PAM. Concentration of particles in suspension (CPS), an index of solutions turbidity and volume of flocculated particles (VFP), an index of particles¿ array were determined. CD and the kaolin were characterized. Composition of CD was: ramnose, arabinose, galactose, galactopiranose, uronic acids, carboxylic, aldoxes and alcoholic groups. Composition of kaolin was: 55% clay and 45% silt and kaolinite its main mineral. 50 mg L-1 CD produced the lowest CPS among all treatments and the higher VFP among solo CD treatments, with minimum effects on solutions¿ pH and electric conductivity. VFP of CD treatments resulted larger than VFP of mineral treatments, effect that could be explained by mucilage¿s solutions higher swelling capacity which results in a more open,card-house type structure of the particles that CD bonds together.
International
Si
Congress
EUROSOIL
960
Place
Viena
Reviewers
Si
ISBN/ISSN
978-3-902382-05-4
Start Date
25/08/2008
End Date
29/08/2008
From page
342
To page
342
EUROSOIL 2008
Participants
  • Participante: OA Rodríguez-Rodríguez (1Universidad Centrocidental Lisandro Alvarado)
  • Autor: Juana Perez Arias (UPM)
  • Participante: MA Henríquez-Rodríguez
  • Autor: Jose Maria Gasco Montes (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Valorización de Recursos
  • Departamento: Edafología
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