Schematic diagram of surface functional groups on the carbonaceous adsorbent developed by the researchers. (IMAGE)

Chiba University

Schematic diagram of surface functional groups on the carbonaceous adsorbent developed by the researchers.

Caption

Researchers at Chiba University, Japan, prepared polyacrylonitrile (PAN)-based activated carbon fibers that are capable of removing nitrate ions from the environment. A. Adsorbent structure and its surface functional groups. Quaternary nitrogen (N-Q), including graphitic nitrogen, and aliphatic amine could be effective for the removal of anionic pollutants, such as nitrate, phosphate, chromium, and arsenic anions. B. A graph representing the influence of equilibrium solution pH (pHe) on the amount of NO3- adsorption.

Credit

Motoi Machida from Chiba University, Japan

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