• Posted on: 18/09/2011
  • Deadline : 14/07/2015
  • Active users : 1223

Summary of the technology

The chemical formula of the catalyst designed by the researchers of the Rovira i Virgili University, is the key of the process, therefore is protected and commercialized by APLICAT. Winner of the enviromental award of the Catalan Government at 2006

Two semi industrilal plants are constructed and working in two towns of Tarragona, obtaining concentrations of nitrates lower than 20ppm.

Description of the technology

Innovative technology developed at the University of Tarragona (Spain) capable to remove nitrates and nitrites from water, getting drinking water (desired values of nitrates < 50 ppm). The nitrates removal consists in a catalytic reaction that converts nitrates and nitrites into Nitrogen gas in one step using hydrogen gas as reactant. The reaction occurs in a catalytic reactor provided by APLICAT that works in a continuous mode. The products are nitrogen gas and clean water.


The nitrates reduction occurs inside of the reactor, that works in continuous mode. The catalytic rection is as follow: 2NO3- + 5H2 --> N2 + 4H2O + 2OH- 2NO2- + 3H2 --> N2 + 2H2O + 2OH- Operation cost: 0,30 €/m3 The only reactant required is Hydrogen gas. "selective catalytic hydrogenation" means the addition of hydrogen to an exclusivelly compound as nitrate. The addition is possible just when the catalyst is present.

Main advantages of its use

  • Simple:-atmospheric pressure-room temperature-small space required-reduced cost of installation
  • Environmental friendly:-Clean technology, no wastes are generated-hydrogen gas is the reactant-catalyst durability >2years
  • Efficiency:-Conversion>95%-All-purpose technology, accepts a wide range of nitrates concentration-Low energy consumes


  • Industrial effluents
  • polluted groundwater for future drinking uses

Additional information (attached documents)

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About the vendor organization

APLICAT, applications of catalysis APLICAT, applications of catalysis

Spin off of the Rovira i Virgili University, Tarragona, Spain.

.- 5 researchers
.- 2 built plants for nitrates removal
.- Several innovative engineering desings
.- Technical assistance in industrial processes
.- Cooperation in research projects with the university
.- Developing research projects with Torres quevedo funds
.- 2 CDTI funds

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APLICAT, applications of catalysis

Technology from APLICAT, applications of catalysis

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