The present invention is a fiber material including blended fibers having a plurality of types of solid fibers having a cross-sectional shape in common, the compositional ratio of at least two types of the plurality of types of fibers with respect to the entire quantity of the blended fibers being at least 5.0%, and when the fibers having the highest surface area increase represented by formula (1) among the plurality of types of fibers for which the compositional ratio is at least 5.0% are designated as fibers (max), and the fibers having the lowest surface area increase represented by formula (1) are designated as fibers (min), the surface area increase of the fibers (min) is at least 3.0% lower than that of the fibers (max), the compositional ratio of the fibers (max) with respect to the entire quantity of the blended fibers is at least 30.0%, the compositional ratio of the fibers (min) with respect to the entire quantity of the blended fibers is at least 8.0%, and the fibers (max) (a) have a surface area increase of at least 1.20, (b) are porous, and (c) have a pore specific surface area of at least 5 m2/g. (1): Surface area increase = (Perimeter of fiber cross section)/(Circumference of a circle having the same cross-sectional area as the fiber cross section). The present invention makes it possible to provide a fiber material which uses fibers capable of efficient adsorption of a substance to be removed from a liquid to be treated, and a purification column in which the fibers are incorporated.一種纖維材料，其係含有具有多種橫切面形狀共通的實心纖維之混合纖維，前述多種纖維之中，至少2種在前述混合纖維全體之中的構成比例為5.0%以上，前述構成比例為5.0%以上的多種纖維之中，將下述式(1)所表示的表面積增加率最高的纖維定為纖維(max)，下述式(1)所表示的表面積增加率最低的纖維定為纖維(min)時，纖維(min)係與纖維(max)相比，表面積增加率低3.0%以上，纖維(max)在前述混合纖維全體之中的構成比例為30.0%以上，纖維(min)在前述混合纖維全體之中的構成比例為8.0%以上，且纖維(max)係(a)表面積增加率1.20以上，(b)為多孔質，細孔比表面積為5m2/g以上。表面積增加率=(纖維橫切面的周長)/(具有與纖維橫切面相同截面積的圓的圓周長) (1)本發明可提供一種使用能夠有效吸附被處理液中的除去對象物質的纖維而成的纖維材料、及內藏該纖維的淨化管柱。
