Record Details     « New Search       Brief Record Full Record MARC Record     Bibliographic Data Control Number 251195 Date and Time of Latest Transaction 20180522074312.AM General Information 180522s |||||||||b ||00||| Cataloging Source STII-DOST Language Code eng Local Call Number Fil(S) SD339 P554 25/1-2 1999 Main Entry - Personal Name Bato, Rebecca C.   Tamayo, Jennifer P.   Fidel, Mildred M. Title Statement Development of cation exchange resin from CNSL for heavy metal removal by Rebecca C. Bato, Jennifer P. Tamayo, Mildred M. Fidel Physical Description 115-124 illus, tables 11 refs Summary, Etc.      Cation exchange resins from cashew nut shell liquid (CNSL) were developed to remove heavy metals from prepared metal solutions. Three formulations of CNSL-based cation exchange resin (CCER) with formalin to CNSL ratio (vol/wt) of 20:100, 30:100 and 50:100 were prepared. Each formulation was further treated in 1:5 and 2:5 resin to H2SO4 ratios.      The cation exchange capacity (CEC) of the six CCER formulations was determined and compared with that of the commercial resin (CR), Lewatit CNP 80. CR had a higher CEC of 5.90. That of CCER ranged from 2.39 to 3.13.      The different CCER formulations were shaken with 34 ppm Cr solution for 1 hour to determine which can best remove heavy metal ions from the solution. CCER with 20:100 formalin to CNSL ratio and treated with 1:5 CCER to H2SO4 ratio gave the highest removal of Cr at 54.24%. This was selected for succeeding analysis.      The selected CCER was more effective than the CR in removing Cr, Zn and Cu ions. At 9 hours shaking, the % removal of Cr, Zn, and Cu were 94.32, 99.77 and 99.52, respectively, while that of the CR was 8.35, 23.29 and 88.09 respectively. On the other hand, the efficiency of the selected CCER to remove Pb ions was comparable to that of CR.      Varying the shaking time had no effect on the efficiency of the selected CCER to remove Pb and Zn ions. (Author's abstract) Subject Added Entry - Topical Term Cation exchange resin   Cashew nut shell liquid (CNSL)   Cation exchange capacity (CEC)   Heavy metal removal           Physical Location           Digital Copy Not Available          Add to Book Cart  |   Download MARC