Paper details

Title:

Growth, Productivity and Biomass Quality of Kenaf Irrigated with Wastewaters - The Effect of Ammonium Ion

Author(s):

Fernando, A.L., Barbosa, B., Boléo, S., Mendes, B.

Document(s):

Abstract:

The aim of this work was to evaluate growth responses, as well as the quality and biomass productivity of the G4 variety of kenaf, irrigated with wastewaters presenting different ammonium ion concentrations: 0, 15, 30 and 60 mg/L (NH4). Throughout the experiment, in pots, percolated waters were analyzed in terms of ammonium ion. Results show that the concentration of 15 mg/L of NH4 led to the highest yields in the G4 variety, with low ash and nitrogen content. The increment of ammonium ion to 60 mg/L (NH4) in the wastewaters led to the decrease in biomass productivity and to the increment of biomass ash and nitrogen content, and this can compromise its use for combustion purposes. In terms of wastewater treatment, the increment of ammonium ion to 60 mg/L (NH4) in the wastewaters led to an increment in the ammonium ion in the percolated waters, but along the study, ammonium ion lowered significantly. 90 days after sowing, 96­100% ammonium ion removal was observed in the pots. Kenaf can assume importance on projects by merging the treatment of water bodies containing ammonium ion up to 60 mg/L (NH4) with production of biomass with quality, in a short time period and with low production costs.

Keywords:

kenaf, wastewater treatment, biomass yields, biomass composition

Topic:

Biomass Resources

Subtopic:

Energy crops (session 2)

Event:

19th European Biomass Conference and Exhibition

Session:

OB4.2

Pages:

68 - 71

ISBN-13:

978-88-89407-55-4

ISBN-10:

88-89407-55-7

Paper DOI:

10.5071/19thEUBCE2011-OB4.2

Price:

FREE