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1 Zhou X. F.

1 2017

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Treatment of bleaching effluent by guanidine phosphate-activated paper mill sludge activated carbon

Zhou X. F.

Drewno : prace naukowe, doniesienia, komunikaty

2017

vol. 60, nr 200

67--77

The influence of the addition of guanidine phosphate (MGP, BGP, TGP) on adsorption toward AOX from bleaching effluent was studied for the preparation of paper mill sludge activated carbon. The preparation was performed with the addition of guanidine phosphate (0 wt%-14 wt%) at temperatures which ranged from 500°C to 800°C for 30 min. – 90 min. of roasting, 2 h-14 h of CO2 activation. The influence of the porous structure of the activated carbons on AOX removal from bleaching effluent was discussed. The improvement depended on the conditions used in the preparation of the activated carbon. In comparison, the activated carbon prepared with the addition of TGP showed enhanced removal of AOX, which was explained by the number of guanidine by the FTIR characterization on the activated carbon. Optimal conditions of the preparation of the paper mill sludge activated carbon were obtained.