I would like to congratulate you for the great presentation and work.

The synthetized material seems very promissing for practical aplication. Due to its magnetic character, it can be easily removed with a magnet, thus decreasing the separation costs after treatment. But still, did the authors analyze the costs of implementing this kind of catalyst at big scale? Is it competitive comparing to what we have nowadays in water treatment plants or comparing to other tertiary treatments? 

Hola, felicitaciones por el interesante trabajo. Mirando la Figura 2 se nota que los catalizadores fueran testados hasta 8 horas de reacciones. a) cual es el motivo de la reducción de la actividad catalítica del catalizador Ni/H+-YM (Fig 2b, linea roja) entre 1 y 2 horas de experimento? b) Que pasa con el catalizador Ni/H+-Y depués de 5h horas de reacción(Fig 2 b)?

Gracias por la atención,

Glaucio