Transactions of the Materials Research Society of Japan
Online ISSN : 2188-1650
Print ISSN : 1382-3469
ISSN-L : 1382-3469
Regular Papers
Adsorption of humic acid in recycled carbon and ceramic composite porous filter and possibility of regeneration treatment through heating
H. FujitaS. SaekiM. TakadaM. KatoK. IkeshitaT. Nonami
Author information

2021 Volume 46 Issue 1 Pages 9-13


Aiming at the development of a filter material that can be used for livestock wastewater treatment, a sintered filter was manufactured by combining recycled carbon with ceramics. We investigated the possibility of applying this filter to the decolorization treatment of the color-causing substances contained in wastewater. Humic acid was used as a model of the color-causing substances. The possibility of regenerating a carbon-ceramic sintered filter after the adsorption treatment by heat treatment and repeated use was examined. When an aqueous solution of sodium humic acid was poured into the sintered carbon-ceramic filter, it was found that it has a high adsorption capacity for humic acid. However, when the aqueous solution was continuously poured, the adsorption rate of humic acid decreased. When the sintered carbon-ceramic body used in the adsorption experiment was heat-treated in an air atmosphere, the adsorption capacity was restored through the heat treatment at 400 °C to 500 °C. From the above, it was shown that a sintered carbon-ceramic body can be an effective adsorbent for humic acid, which is a coloring substance for livestock wastewater and can be repeatedly used for heat treatment.

Content from these authors
© 2021 The Materials Research Society of Japan
Previous article Next article