Modification of Pineapple Peel Fiber as Metal Ion Adsorbent through Reaction with Succinic Anhydride in Pyridine and Dimethyl Sulfoxide Solvents

作者：Hu Xiuyi^*; Zhao Mouming; Huang Huihua

来源：Water Environment Research, 2010, 82(8): 733-741.

DOI：10.2175/106143009X12529484816150

• pineapple peel fiber
• succinic anhydride-modification
• metal ionic adsorbent
• dimethyl sulfoxide

Reactions between saponified pineapple peel fiber (SPPF) and succinic anhydride were performed in refluxed pyridine and dimethyl sulfoxide to obtain modified pineapple peel fiber in pyridine (MPPF-PY) and modified pineapple peel fiber in dimethyl sulfoxide at room temperature (MPPF-DMRT) and at 70 degrees C (MPPF-DM(70)) as novel metal ionic adsorbents. The modified pineapple peel fibers were characterized by Fourier transform infrared (FTIR) and X-ray diffraction (XRD). The MPPF-PY, MPPF-DM(RT), and MPPF-DM(70) showed higher Cu(2+), Cd(2+), and Pb(2+) adsorption capacity than raw pineapple peel fiber (RPPF) and SPPF. Dimethyl sulfoxide favored introduction of a carboxylic function group into pineapple peel fiber compared with pyridine. The elevated reaction temperature of dimethyl sulfoxide could increase the adsorption capacity of the modified pineapple fiber. Optimum pH values for Cu(2+), Cd(2+), and Pb(2+) removal by MPPF-DM(70) were pH 5.5, 7.5, and 5.5, respectively. The Cu(2+), Cd(2+), and Pb(2+) adsorptions by MPPF-DM(70) followed the pseudo second-order kinetics model and Langmuir model. Water Environ. Res., 82, 733 (2010).

• 单位
  华南理工大学