3.2.3 Investigating the effect of curcumin solution
concentration on adsorption
To investigate the effect of curcumin concentration, first curcumin
solutions with concentrations of 10, 30 and 50 ppm were prepared. As in
the previous steps, the optimal amount of adsorbent was added to it and
placed on the shaker at room temperature. Every 2 hours, it was sampled,
centrifuged and sample wavelength was measured using a
spectrophotometer.
Fig (7): Investigation of the effect of curcumin drug concentration on
absorption.
The results in Fig (7) indicated, higher concentration of curcumin drug
solution led to lower adsorption efficiency. It was also obtained
curcumin solution at the highest concentration (ppm10) showed the
highest absorption efficiency because at this concentration the amount
of curcumin in the solution is less than the concentration of 30 and 50
and resulted, special surfaces, empty puros and many active sites still
exist in the nanocomposite surface of the metal-organic framework that
is not saturated and increases the efficiency of the metal-organic
framework nanocomposite absorption.