%0 Journal Article
%T Black Citric Acid Polymer (PN) Capacity as Raw Material for Cationic Exchanger Realization
%J American Journal of Applied Chemistry
%@ 2330-8745
%D 2019
%X The molecular structure of black citric acid polymer (PN) and their hydracids acids functions allowed without doubt their capacities to be potential raw materials for realizing a cationic exchanger. So, the objective of this publication was to study this capacity after activation with sodium hydroxide (NaOH) solution. Two black citric acid polymers PN-2-crispy and PN-3-soft were synthesized whose PN equivalent contents and acidity were evaluated by NaOH-0.05N measuring-out and by Boehm titration. After NaOH-activation which efficacy depends on the PN-size after sieving, two activated-PN were obtained such as PN-2-Na and PN-3-Na whose Na+ contents were determined by HCl-0,049N titration. Then, exchange cationic tests with CaCO3 solution were carried out on these activated-PN and the Ca2+ contents of treated solution and Ca2+ on used PN-2-Na, PN-3-Na was followed by EDTA-complexometric titration. Also, Na+ and Ca2+ on used activated-PN were measuring-out by HCl titration. Results showed clearly that PN once activated with NaOH could carried out cationic exchange and the PN-3-Na was largely active all the time than the PN-2-Na. A global mechanism evolution of these PN-cationic exchange was proposed and also its global kinetic study was done by following-up the [Ca2+] concentration of treated solution. Results showed that these PN-cationic exchange was second order related with [Ca2+] concentration of treated solution and the speed constant of PN-2-Na was inferior to the speed constant of PN-3-Na confirming its Ca2+ retention capacity
%K Black Citric Acid Polymer (PN)
%K Sodium Hydroxide
%K PN-Activation
%K Chloride Acid
%K Calcium Carbonate
%K Cationic Exchange
%K Complexometric-EDTA
%K Kinetics
%U http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=227&doi=10.11648/j.ajac.20190702.12