Journal of the Iranian Chemical Society

, Volume 15, Issue 8, pp 1685–1698 | Cite as

PAMAM dendrimer-enhanced removal of cobalt ions based on multiple-response optimization using response surface methodology

  • Ali Serol Ertürk
Original Paper


This study introduces poly(amidoamine) PAMAM dendrimers as new macromolecular complexation agents for Co(II) removal in polymer-assisted ultrafiltration (PAUF). A five-level three-factor design of experiments (DOE), central composite design type, and response surface methodology (RSM) were used together to find out the interaction effects and optimize three variables, i.e., initial Co(II) concentration ([Co2+]0), PAMAM dendrimer-to-Co(II) ratio (r), and pH of solution. Multiple-response simultaneous optimization was conducted by using desirability function. The goal of 73.6% overall desirability was attained for the removal efficiency (R) and metal retention capacity (q). The predicted results obtained for the simultaneous optimization are R = 76.78% and q = 392.09 mg/g. The optimum conditions derived via RSM were found to be as follows: [Co2+]0 = 4.14 mg/L, r = 2, and pH = 9.0. Verification experiments (R = 75.73% and q = 387.32 mg/g) confirmed the validity of the predicted model. The DOE–RSM-utilized and desirability function-optimized PAMAM dendrimer-enhanced ultrafiltration (PAMAM-DEUF) process was used for the first time in this study. The results are comparable to those provided by the reference PAUF technique.

Graphical Abstract


Polymer-assisted ultrafiltration PAMAM dendrimer Heavy metal removal Cobalt Desirability function Multiple-response optimization 



This research has been supported by Adıyaman University Scientific Research Projects Coordination Department (Project Number: MÜFMAP/2015-0004). There is no conflict of interest. The author is grateful to his wife, Assist. Prof. Dr. Müzeyyen Ertürk, for many helpful discussions.


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Copyright information

© Iranian Chemical Society 2018

Authors and Affiliations

  1. 1.Analytical Chemistry Department, Faculty of PharmacyAdıyaman UniversityAdıyamanTurkey

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