This paper reports on the adsorption characteristic of heavy metal ions (Ni^2+and Fe^3+) using a novel biosorbent, prepared from cell walls of Rhizopus oryzae. The optimum operating conditions are investigated in both...This paper reports on the adsorption characteristic of heavy metal ions (Ni^2+and Fe^3+) using a novel biosorbent, prepared from cell walls of Rhizopus oryzae. The optimum operating conditions are investigated in both single ion system and binary system.展开更多
Acrylic acid was graft-copolymerized onto Rhi. oryzae's cell wall structural polysaccharide directly and efficiently in aqueous solution with eerie ammonium nitrate as initiator. The maximal grafting percentage of...Acrylic acid was graft-copolymerized onto Rhi. oryzae's cell wall structural polysaccharide directly and efficiently in aqueous solution with eerie ammonium nitrate as initiator. The maximal grafting percentage of 135.5% was obtained under the condition of [Ce4+]=5mmol·L-1, [AA]=lmol·L-1, T=60℃ and t=3h. Graft copolymerization was suggested to proceed through free radical reaction mechanism. Grafting occurred primarily on chitosan. Acrylic acid was also attempted to be grafted onto Asp. niger cell wall structural polysaccharide, and only 44.2% of grafting percentage was resulted.展开更多
基金Supported by the National Nature Science Foundation of China
文摘This paper reports on the adsorption characteristic of heavy metal ions (Ni^2+and Fe^3+) using a novel biosorbent, prepared from cell walls of Rhizopus oryzae. The optimum operating conditions are investigated in both single ion system and binary system.
基金the National Natural Science Foundation of China (No. 29606009).
文摘Acrylic acid was graft-copolymerized onto Rhi. oryzae's cell wall structural polysaccharide directly and efficiently in aqueous solution with eerie ammonium nitrate as initiator. The maximal grafting percentage of 135.5% was obtained under the condition of [Ce4+]=5mmol·L-1, [AA]=lmol·L-1, T=60℃ and t=3h. Graft copolymerization was suggested to proceed through free radical reaction mechanism. Grafting occurred primarily on chitosan. Acrylic acid was also attempted to be grafted onto Asp. niger cell wall structural polysaccharide, and only 44.2% of grafting percentage was resulted.