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Report No.
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Development of high functional lignophenol sorbent using electron beam

Hirota, Koichi; Parajuli, D.; Seko, Noriaki

Wood derived lignin has been modified with ethylenediamine (EN-CLP) after electron beam irradiation and its performance for the recovery of precious metals has been studied and the results are compared with that of chemically modified derivative. The maximum adsorption capacities of both the adsorbents for Au(III), Pd(II), and Pt(IV) were evaluated as: EN-CLP(EB) 3.1, 2.3, 0.85 mol/kg, and EN-CLP (Chem) 2.4, 1.4, 0.42 mol/kg, respectively. The EN-CLP synthesized by an electron beam has higher capacity for the recovery of the precious metals.

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