Modification of chitosan-citric acid-tripolyphosphate for removal Sutra Bugis textile waste heavy metal ions.

Modified chitosan have received significant attention that considered as useful biocompatible materials to remove Sutra Bugis textile heavy metal ions. The reactive functional groups of chitosan, -NH2 and -OH can form chelates and prone to chemical reaction with heavy metal ions so that it can be modified. Chitosan has drawback that unstable in acid or base, it can be modified to carried out by crosslinked with citric acid and tripolyphosphate which respect to concentration or crosslinker. The optimal result from the concentration of citric acid and tripolyphosphate for removal Pb(II) ion and Cd(II) ion are 1% and 2%, respectively for each Sutra Bugis textile waste heavy metal ions. The modified chitosan have been characterized by FTIR. The adsorbent based on modified chitosan allows for better adsorption of Sutra Bugis textile waste heavy metal ions is chitosan-citric acid-tripolyphosphate than chitosan-citric acid. [ABSTRACT FROM AUTHOR]