▎ 摘　　要

NOVELTY - An adsorbent (11) comprises graphene oxide which has shoulder peak in vicinity of wavelength of 300 nm. The adsorbent has light absorbance of 15-60% at 300 nm and 600 nm. USE - An adsorbent for adsorption apparatus (claimed) used for treating wastewater. ADVANTAGE - Aggregation, precipitation, and filtration can be easily performed. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for adsorption apparatus (10) which comprises adsorption tank (12) which has adsorbent containing graphene oxide, unit (13) to supply water containing adsorptive substance which can be adsorbed to adsorbent, and unit (15) to discharge water treated by adsorbent. DESCRIPTION OF DRAWING(S) - The drawing shows a conceptual diagram of the apparatus using the adsorbent. Adsorption apparatus (10) Adsorbent (11) Adsorption tank (12) Supply source of water (13) Treated water discharge part (15)