PROBLEM TO BE SOLVED: To effectively utilize unused resources by establishing a method of recovering industrially usable fulvic acid.SOLUTION: A fulvic acid-containing material is produced by a method including a step for bringing a fulvic acid-containing aqueous liquid into contact with activated carbon to cause the activated carbon to adsorb fulvic acid and a step for bringing the activated carbon which has adsorbed fulvic acid into contact with a warm alkaline aqueous liquid of 40-95°C as an eluent to elute fulvic acid.COPYRIGHT: (C)2006,JPO&NCIPI【課題】工業的に利用可能なフルボ酸の回収方法を確立することにより、未利用資源の有効活用を実現する。【解決手段】フルボ酸含有水性液体を活性炭に接触させ、該フルボ酸を該活性炭に吸着する工程と、該フルボ酸が吸着された該活性炭に溶離液として40~95℃の温アルカリ性水性液体を接触させ、該フルボ酸を溶離させる工程とを含む方法により、フルボ酸含有物を製造する。【選択図】図1
