53-58<span style="font-size:11.0pt;mso-bidi-font-size:
10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-bidi-font-family:"times="" roman";letter-spacing:-.1pt;mso-ansi-language:="" en-gb;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="" lang="EN-GB">An eco-friendly
adsorbent is developed by coating polyaniline over an activated carbon prepared
from the seeds of Prosopis Juliflora using ZnCl2 as an
activating agent (PPAC). The polymer bound adsorbent has good adsorption
characteristics with a surface area of 1028 m2/g. A continuous flow fixed bed study is carried out by using
PPAC as an adsorbent packed in a column for the removal of Rhodamine-B dye from
aqueous solution. The effect of operating parameters such as flow rate, bed
height and inlet dye concentration on the sorption characteristics of RB <span style="font-size:11.0pt;
mso-bidi-font-size:10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";mso-bidi-font-family:times-roman;letter-spacing:-.1pt;="" mso-ansi-language:en-gb;mso-fareast-language:en-us;mso-bidi-language:ta"="" lang="EN-GB">have
been investigated at room temperature (30°C) and the natural pH of dye solution. On increasing the influent concentration from 25 to 75
mg/L, the volume of effluent treated decreases from 3800 to 2950 mL. The kinetic
models suggested by Bohart-Adam, Thomas and Yoon-Nelson are employed to study
this adsorption system. The YN model fits exceptionally well for the adsorption
of RB onto PPAC with respect to all of the calculated parameters with high
correlation coefficient (0.9431 to 0.9668) and low standard deviation (0.04 to
0.75). </span